/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 0.1.25-507b705 [2020-09-11 20:38:35,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 20:38:35,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 20:38:35,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 20:38:35,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 20:38:35,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 20:38:35,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 20:38:35,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 20:38:35,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 20:38:35,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 20:38:35,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 20:38:35,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 20:38:35,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 20:38:35,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 20:38:35,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 20:38:35,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 20:38:35,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 20:38:35,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 20:38:35,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 20:38:35,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 20:38:35,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 20:38:35,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 20:38:35,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 20:38:35,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 20:38:35,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 20:38:35,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 20:38:35,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 20:38:35,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 20:38:35,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 20:38:35,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 20:38:35,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 20:38:35,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 20:38:35,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 20:38:35,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 20:38:35,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 20:38:35,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 20:38:35,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 20:38:35,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 20:38:35,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 20:38:35,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 20:38:35,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 20:38:35,626 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 [2020-09-11 20:38:35,675 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 20:38:35,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 20:38:35,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 20:38:35,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 20:38:35,678 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 20:38:35,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 20:38:35,679 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 20:38:35,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 20:38:35,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 20:38:35,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 20:38:35,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 20:38:35,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 20:38:35,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 20:38:35,681 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 20:38:35,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 20:38:35,682 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 20:38:35,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 20:38:35,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 20:38:35,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 20:38:35,682 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 20:38:35,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 20:38:35,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 20:38:35,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 20:38:35,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 20:38:35,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 20:38:35,685 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 20:38:35,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 20:38:35,685 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-11 20:38:35,685 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 20:38:35,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 20:38:35,686 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-11 20:38:36,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 20:38:36,142 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 20:38:36,146 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 20:38:36,148 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 20:38:36,149 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 20:38:36,150 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i [2020-09-11 20:38:36,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f50770eeb/6306db96f4db4e66817636e2301883f5/FLAGe213c21fd [2020-09-11 20:38:36,901 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 20:38:36,901 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i [2020-09-11 20:38:36,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f50770eeb/6306db96f4db4e66817636e2301883f5/FLAGe213c21fd [2020-09-11 20:38:37,183 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f50770eeb/6306db96f4db4e66817636e2301883f5 [2020-09-11 20:38:37,199 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 20:38:37,204 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 20:38:37,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 20:38:37,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 20:38:37,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 20:38:37,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:38:37" (1/1) ... [2020-09-11 20:38:37,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73ce220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:38:37, skipping insertion in model container [2020-09-11 20:38:37,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:38:37" (1/1) ... [2020-09-11 20:38:37,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 20:38:37,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 20:38:37,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 20:38:37,838 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 20:38:37,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 20:38:37,962 INFO L208 MainTranslator]: Completed translation [2020-09-11 20:38:37,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:38:37 WrapperNode [2020-09-11 20:38:37,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 20:38:37,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 20:38:37,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 20:38:37,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 20:38:37,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:38:37" (1/1) ... [2020-09-11 20:38:37,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:38:37" (1/1) ... [2020-09-11 20:38:38,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 20:38:38,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 20:38:38,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 20:38:38,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 20:38:38,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:38:37" (1/1) ... [2020-09-11 20:38:38,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:38:37" (1/1) ... [2020-09-11 20:38:38,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:38:37" (1/1) ... [2020-09-11 20:38:38,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:38:37" (1/1) ... [2020-09-11 20:38:38,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:38:37" (1/1) ... [2020-09-11 20:38:38,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:38:37" (1/1) ... [2020-09-11 20:38:38,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:38:37" (1/1) ... [2020-09-11 20:38:38,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 20:38:38,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 20:38:38,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 20:38:38,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 20:38:38,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:38:37" (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 [2020-09-11 20:38:38,133 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-09-11 20:38:38,133 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-09-11 20:38:38,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 20:38:38,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 20:38:38,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 20:38:38,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 20:38:38,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 20:38:38,136 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 20:38:38,425 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 20:38:38,425 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-11 20:38:38,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:38:38 BoogieIcfgContainer [2020-09-11 20:38:38,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 20:38:38,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 20:38:38,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 20:38:38,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 20:38:38,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 08:38:37" (1/3) ... [2020-09-11 20:38:38,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f745e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:38:38, skipping insertion in model container [2020-09-11 20:38:38,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:38:37" (2/3) ... [2020-09-11 20:38:38,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f745e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:38:38, skipping insertion in model container [2020-09-11 20:38:38,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:38:38" (3/3) ... [2020-09-11 20:38:38,463 INFO L109 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs.i [2020-09-11 20:38:38,477 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 20:38:38,477 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 20:38:38,489 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 20:38:38,491 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 20:38:38,519 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:38,520 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:38,520 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:38,520 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:38,521 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:38,522 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:38,527 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:38,527 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:38,527 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:38,528 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:38,554 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-11 20:38:38,578 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 20:38:38,578 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 20:38:38,578 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 20:38:38,579 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 20:38:38,579 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 20:38:38,579 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 20:38:38,579 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 20:38:38,579 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 20:38:38,593 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 28 transitions, 61 flow [2020-09-11 20:38:38,595 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 61 flow [2020-09-11 20:38:38,628 INFO L129 PetriNetUnfolder]: 3/36 cut-off events. [2020-09-11 20:38:38,629 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 20:38:38,634 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. [2020-09-11 20:38:38,636 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 61 flow [2020-09-11 20:38:38,649 INFO L129 PetriNetUnfolder]: 3/36 cut-off events. [2020-09-11 20:38:38,649 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 20:38:38,650 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. [2020-09-11 20:38:38,651 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 180 [2020-09-11 20:38:38,653 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 20:38:39,267 INFO L206 etLargeBlockEncoding]: Checked pairs total: 114 [2020-09-11 20:38:39,268 INFO L214 etLargeBlockEncoding]: Total number of compositions: 22 [2020-09-11 20:38:39,273 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 11 places, 8 transitions, 21 flow [2020-09-11 20:38:39,285 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 19 states. [2020-09-11 20:38:39,287 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-09-11 20:38:39,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-11 20:38:39,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:38:39,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-11 20:38:39,297 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 20:38:39,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:38:39,305 INFO L82 PathProgramCache]: Analyzing trace with hash 4107967, now seen corresponding path program 1 times [2020-09-11 20:38:39,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:38:39,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735296873] [2020-09-11 20:38:39,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:38:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:38:39,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:38:39,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735296873] [2020-09-11 20:38:39,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:38:39,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 20:38:39,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1903156136] [2020-09-11 20:38:39,534 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:38:39,537 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:38:39,552 INFO L274 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-09-11 20:38:39,553 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:38:39,555 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:38:39,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:38:39,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:38:39,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:38:39,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:38:39,578 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-09-11 20:38:39,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:38:39,591 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-09-11 20:38:39,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:38:39,594 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-11 20:38:39,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:38:39,605 INFO L225 Difference]: With dead ends: 11 [2020-09-11 20:38:39,605 INFO L226 Difference]: Without dead ends: 11 [2020-09-11 20:38:39,607 INFO L675 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 [2020-09-11 20:38:39,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-09-11 20:38:39,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-09-11 20:38:39,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-09-11 20:38:39,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-09-11 20:38:39,649 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2020-09-11 20:38:39,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:38:39,649 INFO L479 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-09-11 20:38:39,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:38:39,650 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-09-11 20:38:39,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-09-11 20:38:39,650 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:38:39,650 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-09-11 20:38:39,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 20:38:39,651 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 20:38:39,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:38:39,652 INFO L82 PathProgramCache]: Analyzing trace with hash -347254361, now seen corresponding path program 1 times [2020-09-11 20:38:39,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:38:39,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132259647] [2020-09-11 20:38:39,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:38:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:38:39,679 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:38:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:38:39,691 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:38:39,717 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 20:38:39,717 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 20:38:39,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 20:38:39,720 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 20:38:39,721 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-09-11 20:38:39,727 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:39,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:39,728 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:39,728 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:39,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:39,729 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:39,729 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:39,729 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:39,729 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:39,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:39,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:39,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:39,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:39,734 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:39,734 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:39,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:39,743 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:39,744 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:39,744 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:39,744 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:39,746 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 20:38:39,747 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 20:38:39,747 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 20:38:39,747 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 20:38:39,747 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 20:38:39,747 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 20:38:39,748 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 20:38:39,748 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 20:38:39,748 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 20:38:39,752 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 38 transitions, 88 flow [2020-09-11 20:38:39,752 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 40 places, 38 transitions, 88 flow [2020-09-11 20:38:39,767 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-09-11 20:38:39,767 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-11 20:38:39,769 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. [2020-09-11 20:38:39,771 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 40 places, 38 transitions, 88 flow [2020-09-11 20:38:39,782 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-09-11 20:38:39,783 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-11 20:38:39,783 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. [2020-09-11 20:38:39,785 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 540 [2020-09-11 20:38:39,785 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 20:38:40,276 INFO L206 etLargeBlockEncoding]: Checked pairs total: 836 [2020-09-11 20:38:40,277 INFO L214 etLargeBlockEncoding]: Total number of compositions: 28 [2020-09-11 20:38:40,277 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 44 flow [2020-09-11 20:38:40,296 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 149 states. [2020-09-11 20:38:40,296 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2020-09-11 20:38:40,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-11 20:38:40,298 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:38:40,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-11 20:38:40,298 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:38:40,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:38:40,299 INFO L82 PathProgramCache]: Analyzing trace with hash 6502175, now seen corresponding path program 1 times [2020-09-11 20:38:40,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:38:40,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769709237] [2020-09-11 20:38:40,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:38:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:38:40,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:38:40,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769709237] [2020-09-11 20:38:40,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:38:40,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 20:38:40,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2061171623] [2020-09-11 20:38:40,408 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:38:40,408 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:38:40,410 INFO L274 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-09-11 20:38:40,410 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:38:40,411 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:38:40,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:38:40,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:38:40,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:38:40,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:38:40,412 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 3 states. [2020-09-11 20:38:40,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:38:40,450 INFO L93 Difference]: Finished difference Result 87 states and 182 transitions. [2020-09-11 20:38:40,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:38:40,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-11 20:38:40,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:38:40,455 INFO L225 Difference]: With dead ends: 87 [2020-09-11 20:38:40,455 INFO L226 Difference]: Without dead ends: 87 [2020-09-11 20:38:40,455 INFO L675 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 [2020-09-11 20:38:40,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-11 20:38:40,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-09-11 20:38:40,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-11 20:38:40,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 182 transitions. [2020-09-11 20:38:40,484 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 182 transitions. Word has length 4 [2020-09-11 20:38:40,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:38:40,484 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 182 transitions. [2020-09-11 20:38:40,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:38:40,485 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 182 transitions. [2020-09-11 20:38:40,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 20:38:40,486 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:38:40,486 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2020-09-11 20:38:40,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 20:38:40,486 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:38:40,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:38:40,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1890616172, now seen corresponding path program 1 times [2020-09-11 20:38:40,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:38:40,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47010418] [2020-09-11 20:38:40,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:38:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:38:40,507 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:38:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:38:40,522 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:38:40,527 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 20:38:40,528 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 20:38:40,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 20:38:40,529 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 20:38:40,531 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-09-11 20:38:40,538 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,539 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,539 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,539 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,541 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,541 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,541 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,541 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,543 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,543 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,544 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,544 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,546 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,547 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,547 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,547 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,549 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,549 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,549 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,550 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:40,551 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-11 20:38:40,552 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 20:38:40,552 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 20:38:40,552 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 20:38:40,552 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 20:38:40,552 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 20:38:40,553 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 20:38:40,553 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 20:38:40,553 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 20:38:40,555 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 48 transitions, 117 flow [2020-09-11 20:38:40,555 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 51 places, 48 transitions, 117 flow [2020-09-11 20:38:40,571 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2020-09-11 20:38:40,572 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-11 20:38:40,573 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. [2020-09-11 20:38:40,575 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 51 places, 48 transitions, 117 flow [2020-09-11 20:38:40,589 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2020-09-11 20:38:40,589 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-11 20:38:40,590 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. [2020-09-11 20:38:40,592 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1080 [2020-09-11 20:38:40,592 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 20:38:41,136 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1735 [2020-09-11 20:38:41,136 INFO L214 etLargeBlockEncoding]: Total number of compositions: 36 [2020-09-11 20:38:41,137 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 22 transitions, 65 flow [2020-09-11 20:38:41,174 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 749 states. [2020-09-11 20:38:41,174 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states. [2020-09-11 20:38:41,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-11 20:38:41,175 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:38:41,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-11 20:38:41,175 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:38:41,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:38:41,176 INFO L82 PathProgramCache]: Analyzing trace with hash 9425446, now seen corresponding path program 1 times [2020-09-11 20:38:41,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:38:41,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848473026] [2020-09-11 20:38:41,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:38:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:38:41,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:38:41,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848473026] [2020-09-11 20:38:41,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:38:41,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 20:38:41,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [767101795] [2020-09-11 20:38:41,222 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:38:41,223 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:38:41,224 INFO L274 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-09-11 20:38:41,224 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:38:41,224 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:38:41,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:38:41,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:38:41,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:38:41,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:38:41,225 INFO L87 Difference]: Start difference. First operand 749 states. Second operand 3 states. [2020-09-11 20:38:41,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:38:41,268 INFO L93 Difference]: Finished difference Result 421 states and 1176 transitions. [2020-09-11 20:38:41,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:38:41,269 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-11 20:38:41,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:38:41,280 INFO L225 Difference]: With dead ends: 421 [2020-09-11 20:38:41,280 INFO L226 Difference]: Without dead ends: 421 [2020-09-11 20:38:41,281 INFO L675 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 [2020-09-11 20:38:41,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-09-11 20:38:41,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2020-09-11 20:38:41,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-09-11 20:38:41,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 1176 transitions. [2020-09-11 20:38:41,342 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 1176 transitions. Word has length 4 [2020-09-11 20:38:41,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:38:41,343 INFO L479 AbstractCegarLoop]: Abstraction has 421 states and 1176 transitions. [2020-09-11 20:38:41,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:38:41,343 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 1176 transitions. [2020-09-11 20:38:41,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 20:38:41,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:38:41,344 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:38:41,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 20:38:41,344 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:38:41,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:38:41,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1692799425, now seen corresponding path program 1 times [2020-09-11 20:38:41,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:38:41,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058082328] [2020-09-11 20:38:41,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:38:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:38:41,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:38:41,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058082328] [2020-09-11 20:38:41,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:38:41,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 20:38:41,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [135753335] [2020-09-11 20:38:41,440 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:38:41,441 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:38:41,447 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-09-11 20:38:41,448 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:38:41,484 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:38:41,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:38:41,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:38:41,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:38:41,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:38:41,485 INFO L87 Difference]: Start difference. First operand 421 states and 1176 transitions. Second operand 3 states. [2020-09-11 20:38:41,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:38:41,520 INFO L93 Difference]: Finished difference Result 319 states and 912 transitions. [2020-09-11 20:38:41,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:38:41,521 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-11 20:38:41,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:38:41,525 INFO L225 Difference]: With dead ends: 319 [2020-09-11 20:38:41,525 INFO L226 Difference]: Without dead ends: 319 [2020-09-11 20:38:41,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:38:41,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-09-11 20:38:41,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2020-09-11 20:38:41,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-09-11 20:38:41,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 912 transitions. [2020-09-11 20:38:41,548 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 912 transitions. Word has length 10 [2020-09-11 20:38:41,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:38:41,548 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 912 transitions. [2020-09-11 20:38:41,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:38:41,548 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 912 transitions. [2020-09-11 20:38:41,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 20:38:41,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:38:41,550 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2020-09-11 20:38:41,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 20:38:41,550 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:38:41,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:38:41,551 INFO L82 PathProgramCache]: Analyzing trace with hash 790757285, now seen corresponding path program 1 times [2020-09-11 20:38:41,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:38:41,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296824217] [2020-09-11 20:38:41,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:38:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:38:41,566 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:38:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:38:41,577 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:38:41,583 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 20:38:41,584 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 20:38:41,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 20:38:41,584 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 20:38:41,585 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-09-11 20:38:41,591 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,591 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,591 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,591 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,592 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,592 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,592 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,592 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,592 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,593 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,593 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,593 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,593 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,594 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,594 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,594 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,594 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,594 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,595 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,595 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,595 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,595 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,596 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,596 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,596 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,597 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,597 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,597 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,599 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,599 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,600 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,600 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,602 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,602 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,602 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,602 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,604 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,604 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:41,606 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-11 20:38:41,606 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 20:38:41,607 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 20:38:41,607 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 20:38:41,607 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 20:38:41,607 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 20:38:41,607 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 20:38:41,607 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 20:38:41,607 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 20:38:41,609 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 58 transitions, 148 flow [2020-09-11 20:38:41,609 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 148 flow [2020-09-11 20:38:41,624 INFO L129 PetriNetUnfolder]: 9/93 cut-off events. [2020-09-11 20:38:41,624 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-11 20:38:41,625 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. [2020-09-11 20:38:41,628 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 148 flow [2020-09-11 20:38:41,641 INFO L129 PetriNetUnfolder]: 9/93 cut-off events. [2020-09-11 20:38:41,641 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-11 20:38:41,643 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. [2020-09-11 20:38:41,645 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1800 [2020-09-11 20:38:41,645 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 20:38:42,280 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3606 [2020-09-11 20:38:42,280 INFO L214 etLargeBlockEncoding]: Total number of compositions: 37 [2020-09-11 20:38:42,280 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 31 transitions, 94 flow [2020-09-11 20:38:42,955 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7269 states. [2020-09-11 20:38:42,956 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states. [2020-09-11 20:38:42,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-11 20:38:42,956 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:38:42,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-11 20:38:42,957 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 20:38:42,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:38:42,957 INFO L82 PathProgramCache]: Analyzing trace with hash 12782696, now seen corresponding path program 1 times [2020-09-11 20:38:42,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:38:42,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867999602] [2020-09-11 20:38:42,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:38:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:38:42,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:38:42,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867999602] [2020-09-11 20:38:42,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:38:42,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 20:38:42,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1005632304] [2020-09-11 20:38:42,994 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:38:42,994 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:38:42,995 INFO L274 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-09-11 20:38:42,995 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:38:42,995 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:38:42,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:38:42,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:38:42,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:38:42,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:38:42,996 INFO L87 Difference]: Start difference. First operand 7269 states. Second operand 3 states. [2020-09-11 20:38:43,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:38:43,108 INFO L93 Difference]: Finished difference Result 4227 states and 15765 transitions. [2020-09-11 20:38:43,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:38:43,109 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-11 20:38:43,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:38:43,158 INFO L225 Difference]: With dead ends: 4227 [2020-09-11 20:38:43,158 INFO L226 Difference]: Without dead ends: 4227 [2020-09-11 20:38:43,159 INFO L675 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 [2020-09-11 20:38:43,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4227 states. [2020-09-11 20:38:43,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4227 to 4227. [2020-09-11 20:38:43,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4227 states. [2020-09-11 20:38:43,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4227 states to 4227 states and 15765 transitions. [2020-09-11 20:38:43,532 INFO L78 Accepts]: Start accepts. Automaton has 4227 states and 15765 transitions. Word has length 4 [2020-09-11 20:38:43,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:38:43,532 INFO L479 AbstractCegarLoop]: Abstraction has 4227 states and 15765 transitions. [2020-09-11 20:38:43,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:38:43,532 INFO L276 IsEmpty]: Start isEmpty. Operand 4227 states and 15765 transitions. [2020-09-11 20:38:43,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 20:38:43,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:38:43,534 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:38:43,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 20:38:43,535 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 20:38:43,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:38:43,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1357463974, now seen corresponding path program 1 times [2020-09-11 20:38:43,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:38:43,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056849478] [2020-09-11 20:38:43,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:38:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:38:43,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:38:43,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056849478] [2020-09-11 20:38:43,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:38:43,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 20:38:43,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [7197287] [2020-09-11 20:38:43,595 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:38:43,596 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:38:43,597 INFO L274 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-09-11 20:38:43,597 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:38:43,597 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:38:43,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:38:43,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:38:43,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:38:43,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:38:43,599 INFO L87 Difference]: Start difference. First operand 4227 states and 15765 transitions. Second operand 3 states. [2020-09-11 20:38:43,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:38:43,646 INFO L93 Difference]: Finished difference Result 1975 states and 7342 transitions. [2020-09-11 20:38:43,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:38:43,646 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-11 20:38:43,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:38:43,664 INFO L225 Difference]: With dead ends: 1975 [2020-09-11 20:38:43,665 INFO L226 Difference]: Without dead ends: 1975 [2020-09-11 20:38:43,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:38:43,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2020-09-11 20:38:43,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1975. [2020-09-11 20:38:43,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2020-09-11 20:38:43,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 7342 transitions. [2020-09-11 20:38:43,744 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 7342 transitions. Word has length 10 [2020-09-11 20:38:43,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:38:43,745 INFO L479 AbstractCegarLoop]: Abstraction has 1975 states and 7342 transitions. [2020-09-11 20:38:43,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:38:43,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 7342 transitions. [2020-09-11 20:38:43,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 20:38:43,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:38:43,749 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-09-11 20:38:43,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 20:38:43,749 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 20:38:43,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:38:43,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1886547670, now seen corresponding path program 1 times [2020-09-11 20:38:43,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:38:43,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558405654] [2020-09-11 20:38:43,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:38:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:38:43,770 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:38:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:38:43,781 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:38:43,787 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 20:38:43,787 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 20:38:43,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-11 20:38:43,788 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 20:38:43,788 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-09-11 20:38:43,795 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,795 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,795 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,795 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,796 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,796 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,796 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,796 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,796 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,797 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,797 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,797 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,797 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,797 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,798 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,798 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,798 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,798 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,798 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,799 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,799 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,799 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,799 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,799 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,800 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,800 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,800 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,800 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,800 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,800 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,801 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,801 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,801 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,801 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,803 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,803 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,803 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,803 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,805 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,805 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,805 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,805 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,807 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,807 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,807 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,807 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,809 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,809 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,809 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,809 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:43,810 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-11 20:38:43,811 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 20:38:43,811 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 20:38:43,811 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 20:38:43,811 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 20:38:43,811 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 20:38:43,811 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 20:38:43,811 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 20:38:43,812 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 20:38:43,813 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 68 transitions, 181 flow [2020-09-11 20:38:43,813 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 181 flow [2020-09-11 20:38:43,828 INFO L129 PetriNetUnfolder]: 11/112 cut-off events. [2020-09-11 20:38:43,828 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-11 20:38:43,830 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. [2020-09-11 20:38:43,834 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 181 flow [2020-09-11 20:38:43,846 INFO L129 PetriNetUnfolder]: 11/112 cut-off events. [2020-09-11 20:38:43,847 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-11 20:38:43,848 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. [2020-09-11 20:38:43,852 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2700 [2020-09-11 20:38:43,852 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 20:38:44,642 INFO L206 etLargeBlockEncoding]: Checked pairs total: 5637 [2020-09-11 20:38:44,642 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2020-09-11 20:38:44,643 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 37 transitions, 119 flow [2020-09-11 20:38:50,789 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 36397 states. [2020-09-11 20:38:50,790 INFO L276 IsEmpty]: Start isEmpty. Operand 36397 states. [2020-09-11 20:38:50,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-11 20:38:50,790 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:38:50,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-11 20:38:50,790 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:38:50,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:38:50,791 INFO L82 PathProgramCache]: Analyzing trace with hash 16657360, now seen corresponding path program 1 times [2020-09-11 20:38:50,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:38:50,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448209864] [2020-09-11 20:38:50,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:38:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:38:50,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:38:50,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448209864] [2020-09-11 20:38:50,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:38:50,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 20:38:50,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [806811918] [2020-09-11 20:38:50,844 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:38:50,844 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:38:50,844 INFO L274 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-09-11 20:38:50,845 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:38:50,845 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:38:50,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:38:50,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:38:50,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:38:50,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:38:50,846 INFO L87 Difference]: Start difference. First operand 36397 states. Second operand 3 states. [2020-09-11 20:38:51,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:38:51,166 INFO L93 Difference]: Finished difference Result 22246 states and 100423 transitions. [2020-09-11 20:38:51,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:38:51,166 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-11 20:38:51,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:38:51,347 INFO L225 Difference]: With dead ends: 22246 [2020-09-11 20:38:51,347 INFO L226 Difference]: Without dead ends: 22246 [2020-09-11 20:38:51,348 INFO L675 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 [2020-09-11 20:38:52,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22246 states. [2020-09-11 20:38:52,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22246 to 22246. [2020-09-11 20:38:52,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22246 states. [2020-09-11 20:38:52,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22246 states to 22246 states and 100423 transitions. [2020-09-11 20:38:52,981 INFO L78 Accepts]: Start accepts. Automaton has 22246 states and 100423 transitions. Word has length 4 [2020-09-11 20:38:52,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:38:52,981 INFO L479 AbstractCegarLoop]: Abstraction has 22246 states and 100423 transitions. [2020-09-11 20:38:52,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:38:52,981 INFO L276 IsEmpty]: Start isEmpty. Operand 22246 states and 100423 transitions. [2020-09-11 20:38:52,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 20:38:52,982 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:38:52,982 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:38:52,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-11 20:38:52,983 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:38:52,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:38:52,983 INFO L82 PathProgramCache]: Analyzing trace with hash -667162749, now seen corresponding path program 1 times [2020-09-11 20:38:52,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:38:52,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80050647] [2020-09-11 20:38:52,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:38:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:38:53,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-11 20:38:53,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80050647] [2020-09-11 20:38:53,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:38:53,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 20:38:53,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [89833753] [2020-09-11 20:38:53,015 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:38:53,016 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:38:53,017 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-09-11 20:38:53,018 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:38:53,023 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:38:53,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:38:53,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:38:53,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:38:53,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:38:53,024 INFO L87 Difference]: Start difference. First operand 22246 states and 100423 transitions. Second operand 3 states. [2020-09-11 20:38:53,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:38:53,191 INFO L93 Difference]: Finished difference Result 7918 states and 35335 transitions. [2020-09-11 20:38:53,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:38:53,192 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-11 20:38:53,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:38:53,241 INFO L225 Difference]: With dead ends: 7918 [2020-09-11 20:38:53,241 INFO L226 Difference]: Without dead ends: 7918 [2020-09-11 20:38:53,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:38:53,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7918 states. [2020-09-11 20:38:53,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7918 to 7918. [2020-09-11 20:38:53,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7918 states. [2020-09-11 20:38:53,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7918 states to 7918 states and 35335 transitions. [2020-09-11 20:38:53,610 INFO L78 Accepts]: Start accepts. Automaton has 7918 states and 35335 transitions. Word has length 10 [2020-09-11 20:38:53,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:38:53,610 INFO L479 AbstractCegarLoop]: Abstraction has 7918 states and 35335 transitions. [2020-09-11 20:38:53,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:38:53,611 INFO L276 IsEmpty]: Start isEmpty. Operand 7918 states and 35335 transitions. [2020-09-11 20:38:53,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-11 20:38:53,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:38:53,614 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:38:53,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-11 20:38:53,615 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:38:53,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:38:53,615 INFO L82 PathProgramCache]: Analyzing trace with hash 369573413, now seen corresponding path program 1 times [2020-09-11 20:38:53,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:38:53,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971639891] [2020-09-11 20:38:53,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:38:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:38:53,631 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:38:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:38:53,646 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:38:53,658 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 20:38:53,658 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 20:38:53,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-11 20:38:53,659 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 20:38:53,659 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-09-11 20:38:53,669 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,669 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,669 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,670 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,670 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,670 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,671 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,671 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,671 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,671 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,671 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,672 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,672 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,672 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,672 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,673 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,673 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,673 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,673 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,674 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,674 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,674 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,675 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,675 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,675 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,675 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,676 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,676 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,676 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,676 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,676 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,677 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,677 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,677 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,677 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,678 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,678 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,678 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,678 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,679 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,681 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,681 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,681 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,681 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,686 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,686 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,687 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,687 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,689 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,689 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,689 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,689 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,691 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,691 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,691 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,692 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,693 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,694 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,694 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,694 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:38:53,696 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-09-11 20:38:53,696 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 20:38:53,696 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 20:38:53,696 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 20:38:53,697 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 20:38:53,697 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 20:38:53,697 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 20:38:53,697 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 20:38:53,697 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 20:38:53,700 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 78 transitions, 216 flow [2020-09-11 20:38:53,700 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 78 transitions, 216 flow [2020-09-11 20:38:53,720 INFO L129 PetriNetUnfolder]: 13/131 cut-off events. [2020-09-11 20:38:53,720 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-11 20:38:53,722 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. [2020-09-11 20:38:53,727 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 78 transitions, 216 flow [2020-09-11 20:38:53,739 INFO L129 PetriNetUnfolder]: 13/131 cut-off events. [2020-09-11 20:38:53,740 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-11 20:38:53,741 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. [2020-09-11 20:38:53,746 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3780 [2020-09-11 20:38:53,746 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 20:38:54,496 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-09-11 20:38:54,815 INFO L206 etLargeBlockEncoding]: Checked pairs total: 9546 [2020-09-11 20:38:54,815 INFO L214 etLargeBlockEncoding]: Total number of compositions: 50 [2020-09-11 20:38:54,815 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 48 transitions, 156 flow Received shutdown request... [2020-09-11 20:43:11,366 WARN L544 AbstractCegarLoop]: Verification canceled [2020-09-11 20:43:11,379 WARN L228 ceAbstractionStarter]: Timeout [2020-09-11 20:43:11,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 08:43:11 BasicIcfg [2020-09-11 20:43:11,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 20:43:11,382 INFO L168 Benchmark]: Toolchain (without parser) took 274180.88 ms. Allocated memory was 141.0 MB in the beginning and 3.0 GB in the end (delta: 2.9 GB). Free memory was 101.4 MB in the beginning and 967.1 MB in the end (delta: -865.8 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2020-09-11 20:43:11,383 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-11 20:43:11,384 INFO L168 Benchmark]: CACSL2BoogieTranslator took 757.51 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 100.9 MB in the beginning and 165.0 MB in the end (delta: -64.1 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-09-11 20:43:11,391 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.20 ms. Allocated memory is still 204.5 MB. Free memory was 165.0 MB in the beginning and 163.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-11 20:43:11,392 INFO L168 Benchmark]: Boogie Preprocessor took 32.74 ms. Allocated memory is still 204.5 MB. Free memory was 163.2 MB in the beginning and 162.2 MB in the end (delta: 931.6 kB). Peak memory consumption was 931.6 kB. Max. memory is 7.1 GB. [2020-09-11 20:43:11,392 INFO L168 Benchmark]: RCFGBuilder took 386.84 ms. Allocated memory is still 204.5 MB. Free memory was 162.2 MB in the beginning and 146.7 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. [2020-09-11 20:43:11,396 INFO L168 Benchmark]: TraceAbstraction took 272937.75 ms. Allocated memory was 204.5 MB in the beginning and 3.0 GB in the end (delta: 2.8 GB). Free memory was 145.7 MB in the beginning and 967.1 MB in the end (delta: -821.4 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2020-09-11 20:43:11,404 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 757.51 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 100.9 MB in the beginning and 165.0 MB in the end (delta: -64.1 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 56.20 ms. Allocated memory is still 204.5 MB. Free memory was 165.0 MB in the beginning and 163.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.74 ms. Allocated memory is still 204.5 MB. Free memory was 163.2 MB in the beginning and 162.2 MB in the end (delta: 931.6 kB). Peak memory consumption was 931.6 kB. Max. memory is 7.1 GB. * RCFGBuilder took 386.84 ms. Allocated memory is still 204.5 MB. Free memory was 162.2 MB in the beginning and 146.7 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 272937.75 ms. Allocated memory was 204.5 MB in the beginning and 3.0 GB in the end (delta: 2.8 GB). Free memory was 145.7 MB in the beginning and 967.1 MB in the end (delta: -821.4 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.6s, 29 ProgramPointsBefore, 11 ProgramPointsAfterwards, 28 TransitionsBefore, 8 TransitionsAfterwards, 180 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 83 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 114 CheckedPairsTotal, 22 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.5s, 40 ProgramPointsBefore, 20 ProgramPointsAfterwards, 38 TransitionsBefore, 16 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 2 ChoiceCompositions, 279 VarBasedMoverChecksPositive, 14 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 836 CheckedPairsTotal, 28 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.5s, 51 ProgramPointsBefore, 27 ProgramPointsAfterwards, 48 TransitionsBefore, 22 TransitionsAfterwards, 1080 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 520 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1735 CheckedPairsTotal, 36 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.6s, 62 ProgramPointsBefore, 38 ProgramPointsAfterwards, 58 TransitionsBefore, 31 TransitionsAfterwards, 1800 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 781 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 3606 CheckedPairsTotal, 37 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 73 ProgramPointsBefore, 45 ProgramPointsAfterwards, 68 TransitionsBefore, 37 TransitionsAfterwards, 2700 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 1219 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 5637 CheckedPairsTotal, 45 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.1s, 84 ProgramPointsBefore, 56 ProgramPointsAfterwards, 78 TransitionsBefore, 48 TransitionsAfterwards, 3780 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 1655 VarBasedMoverChecksPositive, 78 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 9546 CheckedPairsTotal, 50 TotalNumberOfCompositions - 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 275369 states. Currently 34847 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 272.6s, OverallIterations: 13, TraceHistogramMax: 6, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 267.8s, HoareTripleCheckerStatistics: 179 SDtfs, 85 SDslu, 64 SDs, 0 SdLazy, 89 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 29 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: 2.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 666 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