/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 12:05:32,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 12:05:32,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 12:05:32,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 12:05:32,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 12:05:32,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 12:05:32,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 12:05:32,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 12:05:32,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 12:05:32,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 12:05:32,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 12:05:32,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 12:05:32,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 12:05:32,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 12:05:32,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 12:05:32,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 12:05:32,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 12:05:32,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 12:05:32,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 12:05:32,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 12:05:32,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 12:05:32,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 12:05:32,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 12:05:32,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 12:05:32,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 12:05:32,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 12:05:32,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 12:05:32,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 12:05:32,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 12:05:32,348 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 12:05:32,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 12:05:32,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 12:05:32,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 12:05:32,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 12:05:32,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 12:05:32,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 12:05:32,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 12:05:32,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 12:05:32,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 12:05:32,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 12:05:32,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 12:05:32,363 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf [2020-04-18 12:05:32,386 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 12:05:32,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 12:05:32,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 12:05:32,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 12:05:32,390 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 12:05:32,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 12:05:32,390 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 12:05:32,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 12:05:32,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 12:05:32,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 12:05:32,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 12:05:32,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 12:05:32,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 12:05:32,392 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 12:05:32,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 12:05:32,393 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 12:05:32,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 12:05:32,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 12:05:32,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 12:05:32,394 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 12:05:32,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 12:05:32,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 12:05:32,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 12:05:32,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 12:05:32,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 12:05:32,395 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 12:05:32,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 12:05:32,395 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 12:05:32,395 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 12:05:32,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 12:05:32,397 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 12:05:32,682 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 12:05:32,693 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 12:05:32,696 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 12:05:32,697 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 12:05:32,698 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 12:05:32,699 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i [2020-04-18 12:05:32,773 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/706c7800a/8114c30d7c79483abf7d2ae4ec0445b3/FLAGef63c4ead [2020-04-18 12:05:33,354 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 12:05:33,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i [2020-04-18 12:05:33,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/706c7800a/8114c30d7c79483abf7d2ae4ec0445b3/FLAGef63c4ead [2020-04-18 12:05:33,625 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/706c7800a/8114c30d7c79483abf7d2ae4ec0445b3 [2020-04-18 12:05:33,635 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 12:05:33,652 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 12:05:33,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 12:05:33,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 12:05:33,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 12:05:33,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 12:05:33" (1/1) ... [2020-04-18 12:05:33,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14e420cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 12:05:33, skipping insertion in model container [2020-04-18 12:05:33,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 12:05:33" (1/1) ... [2020-04-18 12:05:33,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 12:05:33,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 12:05:34,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 12:05:34,236 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 12:05:34,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 12:05:34,384 INFO L208 MainTranslator]: Completed translation [2020-04-18 12:05:34,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 12:05:34 WrapperNode [2020-04-18 12:05:34,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 12:05:34,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 12:05:34,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 12:05:34,385 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 12:05:34,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 12:05:34" (1/1) ... [2020-04-18 12:05:34,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 12:05:34" (1/1) ... [2020-04-18 12:05:34,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 12:05:34,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 12:05:34,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 12:05:34,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 12:05:34,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 12:05:34" (1/1) ... [2020-04-18 12:05:34,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 12:05:34" (1/1) ... [2020-04-18 12:05:34,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 12:05:34" (1/1) ... [2020-04-18 12:05:34,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 12:05:34" (1/1) ... [2020-04-18 12:05:34,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 12:05:34" (1/1) ... [2020-04-18 12:05:34,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 12:05:34" (1/1) ... [2020-04-18 12:05:34,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 12:05:34" (1/1) ... [2020-04-18 12:05:34,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 12:05:34,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 12:05:34,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 12:05:34,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 12:05:34,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 12:05:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 12:05:34,530 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-04-18 12:05:34,530 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-04-18 12:05:34,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 12:05:34,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 12:05:34,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 12:05:34,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 12:05:34,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 12:05:34,533 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 12:05:34,825 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 12:05:34,826 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-04-18 12:05:34,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 12:05:34 BoogieIcfgContainer [2020-04-18 12:05:34,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 12:05:34,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 12:05:34,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 12:05:34,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 12:05:34,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 12:05:33" (1/3) ... [2020-04-18 12:05:34,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3aa1f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 12:05:34, skipping insertion in model container [2020-04-18 12:05:34,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 12:05:34" (2/3) ... [2020-04-18 12:05:34,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3aa1f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 12:05:34, skipping insertion in model container [2020-04-18 12:05:34,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 12:05:34" (3/3) ... [2020-04-18 12:05:34,847 INFO L109 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs.i [2020-04-18 12:05:34,855 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 12:05:34,856 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 12:05:34,863 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 12:05:34,864 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 12:05:34,886 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:34,887 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:34,887 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:34,888 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:34,889 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:34,889 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:34,893 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:34,894 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:34,894 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:34,894 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:34,915 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 12:05:34,936 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 12:05:34,936 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 12:05:34,936 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 12:05:34,937 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 12:05:34,937 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 12:05:34,937 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 12:05:34,937 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 12:05:34,937 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 12:05:34,950 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 28 transitions, 61 flow [2020-04-18 12:05:34,951 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 61 flow [2020-04-18 12:05:34,980 INFO L129 PetriNetUnfolder]: 3/36 cut-off events. [2020-04-18 12:05:34,980 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 12:05:34,985 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. [2020-04-18 12:05:34,987 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 61 flow [2020-04-18 12:05:34,999 INFO L129 PetriNetUnfolder]: 3/36 cut-off events. [2020-04-18 12:05:34,999 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 12:05:35,000 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. [2020-04-18 12:05:35,001 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 180 [2020-04-18 12:05:35,002 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 12:05:35,622 INFO L206 etLargeBlockEncoding]: Checked pairs total: 114 [2020-04-18 12:05:35,623 INFO L214 etLargeBlockEncoding]: Total number of compositions: 22 [2020-04-18 12:05:35,626 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 11 places, 8 transitions, 21 flow [2020-04-18 12:05:35,634 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 19 states. [2020-04-18 12:05:35,636 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-04-18 12:05:35,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 12:05:35,642 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 12:05:35,643 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-04-18 12:05:35,643 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 12:05:35,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:35,650 INFO L82 PathProgramCache]: Analyzing trace with hash 4107967, now seen corresponding path program 1 times [2020-04-18 12:05:35,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 12:05:35,658 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [598114738] [2020-04-18 12:05:35,674 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 12:05:35,685 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 12:05:35,687 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-04-18 12:05:35,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 12:05:35,688 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 12:05:35,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:35,688 INFO L82 PathProgramCache]: Analyzing trace with hash 4107967, now seen corresponding path program 2 times [2020-04-18 12:05:35,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 12:05:35,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110596221] [2020-04-18 12:05:35,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 12:05:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 12:05:35,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 12:05:35,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110596221] [2020-04-18 12:05:35,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 12:05:35,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 12:05:35,897 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 12:05:35,897 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 12:05:35,898 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 12:05:35,899 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 12:05:35,910 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 12:05:35,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 12:05:35,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 12:05:35,919 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2020-04-18 12:05:35,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 12:05:35,923 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2020-04-18 12:05:35,924 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2020-04-18 12:05:35,924 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 12:05:35,925 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [598114738] [2020-04-18 12:05:35,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 12:05:35,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 12:05:35,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [598114738] [2020-04-18 12:05:35,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 12:05:35,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 12:05:35,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 12:05:35,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 12:05:35,936 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-04-18 12:05:35,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 12:05:35,946 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-04-18 12:05:35,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 12:05:35,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-04-18 12:05:35,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 12:05:35,958 INFO L225 Difference]: With dead ends: 11 [2020-04-18 12:05:35,958 INFO L226 Difference]: Without dead ends: 11 [2020-04-18 12:05:35,960 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 12:05:35,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-04-18 12:05:35,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-04-18 12:05:35,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-04-18 12:05:35,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-04-18 12:05:35,998 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2020-04-18 12:05:35,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 12:05:35,998 INFO L479 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-04-18 12:05:35,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 12:05:35,999 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-04-18 12:05:35,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 12:05:35,999 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 12:05:36,000 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-04-18 12:05:36,000 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 12:05:36,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:36,000 INFO L82 PathProgramCache]: Analyzing trace with hash -347254361, now seen corresponding path program 1 times [2020-04-18 12:05:36,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 12:05:36,001 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [534124612] [2020-04-18 12:05:36,001 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 12:05:36,002 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 12:05:36,003 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-04-18 12:05:36,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 12:05:36,003 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 12:05:36,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:36,004 INFO L82 PathProgramCache]: Analyzing trace with hash -347254361, now seen corresponding path program 2 times [2020-04-18 12:05:36,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 12:05:36,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193718575] [2020-04-18 12:05:36,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 12:05:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 12:05:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 12:05:36,109 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 12:05:36,109 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 12:05:36,109 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 12:05:36,111 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 12:05:36,111 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-04-18 12:05:36,122 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,122 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,122 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,122 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,123 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,123 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,124 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,124 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,124 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,124 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,126 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,126 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,127 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,127 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,127 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,127 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,130 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,130 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,131 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,131 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,134 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 12:05:36,135 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 12:05:36,135 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 12:05:36,135 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 12:05:36,135 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 12:05:36,135 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 12:05:36,135 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 12:05:36,135 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 12:05:36,136 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 12:05:36,138 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 38 transitions, 88 flow [2020-04-18 12:05:36,138 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 40 places, 38 transitions, 88 flow [2020-04-18 12:05:36,168 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-04-18 12:05:36,168 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-04-18 12:05:36,169 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. [2020-04-18 12:05:36,173 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 40 places, 38 transitions, 88 flow [2020-04-18 12:05:36,190 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-04-18 12:05:36,190 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-04-18 12:05:36,192 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. [2020-04-18 12:05:36,194 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 540 [2020-04-18 12:05:36,194 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 12:05:36,646 INFO L206 etLargeBlockEncoding]: Checked pairs total: 836 [2020-04-18 12:05:36,646 INFO L214 etLargeBlockEncoding]: Total number of compositions: 28 [2020-04-18 12:05:36,646 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 44 flow [2020-04-18 12:05:36,666 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 149 states. [2020-04-18 12:05:36,666 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2020-04-18 12:05:36,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 12:05:36,667 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 12:05:36,667 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-04-18 12:05:36,668 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 12:05:36,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:36,668 INFO L82 PathProgramCache]: Analyzing trace with hash 6502175, now seen corresponding path program 1 times [2020-04-18 12:05:36,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 12:05:36,669 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2099798664] [2020-04-18 12:05:36,669 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 12:05:36,670 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 12:05:36,671 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-04-18 12:05:36,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 12:05:36,671 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 12:05:36,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:36,672 INFO L82 PathProgramCache]: Analyzing trace with hash 6502175, now seen corresponding path program 2 times [2020-04-18 12:05:36,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 12:05:36,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742932907] [2020-04-18 12:05:36,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 12:05:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 12:05:36,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 12:05:36,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742932907] [2020-04-18 12:05:36,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 12:05:36,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 12:05:36,751 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 12:05:36,752 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 12:05:36,753 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 12:05:36,753 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 12:05:36,758 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 12:05:36,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 12:05:36,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 12:05:36,759 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2020-04-18 12:05:36,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 12:05:36,760 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2020-04-18 12:05:36,760 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2020-04-18 12:05:36,760 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 12:05:36,761 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2099798664] [2020-04-18 12:05:36,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 12:05:36,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 12:05:36,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2099798664] [2020-04-18 12:05:36,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 12:05:36,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 12:05:36,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 12:05:36,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 12:05:36,764 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 3 states. [2020-04-18 12:05:36,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 12:05:36,799 INFO L93 Difference]: Finished difference Result 87 states and 182 transitions. [2020-04-18 12:05:36,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 12:05:36,800 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-04-18 12:05:36,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 12:05:36,802 INFO L225 Difference]: With dead ends: 87 [2020-04-18 12:05:36,803 INFO L226 Difference]: Without dead ends: 87 [2020-04-18 12:05:36,804 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 12:05:36,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-04-18 12:05:36,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-04-18 12:05:36,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-04-18 12:05:36,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 182 transitions. [2020-04-18 12:05:36,835 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 182 transitions. Word has length 4 [2020-04-18 12:05:36,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 12:05:36,835 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 182 transitions. [2020-04-18 12:05:36,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 12:05:36,836 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 182 transitions. [2020-04-18 12:05:36,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 12:05:36,838 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 12:05:36,838 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2020-04-18 12:05:36,838 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 12:05:36,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:36,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1890616172, now seen corresponding path program 1 times [2020-04-18 12:05:36,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 12:05:36,840 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [762399461] [2020-04-18 12:05:36,843 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 12:05:36,844 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 12:05:36,845 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 12:05:36,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 12:05:36,845 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 12:05:36,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:36,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1890616172, now seen corresponding path program 2 times [2020-04-18 12:05:36,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 12:05:36,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241345142] [2020-04-18 12:05:36,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 12:05:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 12:05:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 12:05:36,903 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 12:05:36,903 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 12:05:36,903 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 12:05:36,904 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 12:05:36,909 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-04-18 12:05:36,918 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,918 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,918 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,918 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,919 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,919 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,920 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,920 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,920 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,920 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,921 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,921 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,921 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,921 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,922 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,922 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,922 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,922 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,923 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,923 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,923 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,924 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,926 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,927 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,927 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,927 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,929 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,929 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,929 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,930 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:36,931 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 12:05:36,932 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 12:05:36,932 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 12:05:36,932 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 12:05:36,932 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 12:05:36,932 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 12:05:36,932 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 12:05:36,933 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 12:05:36,933 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 12:05:36,937 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 48 transitions, 117 flow [2020-04-18 12:05:36,937 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 51 places, 48 transitions, 117 flow [2020-04-18 12:05:36,970 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2020-04-18 12:05:36,970 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-04-18 12:05:36,971 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. [2020-04-18 12:05:36,973 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 51 places, 48 transitions, 117 flow [2020-04-18 12:05:36,987 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2020-04-18 12:05:36,988 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-04-18 12:05:36,990 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. [2020-04-18 12:05:36,994 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1080 [2020-04-18 12:05:36,995 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 12:05:37,536 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1735 [2020-04-18 12:05:37,536 INFO L214 etLargeBlockEncoding]: Total number of compositions: 36 [2020-04-18 12:05:37,536 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 22 transitions, 65 flow [2020-04-18 12:05:37,573 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 749 states. [2020-04-18 12:05:37,573 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states. [2020-04-18 12:05:37,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 12:05:37,574 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 12:05:37,574 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-04-18 12:05:37,574 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 12:05:37,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:37,575 INFO L82 PathProgramCache]: Analyzing trace with hash 9425446, now seen corresponding path program 1 times [2020-04-18 12:05:37,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 12:05:37,575 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1604643607] [2020-04-18 12:05:37,576 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 12:05:37,576 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 12:05:37,576 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-04-18 12:05:37,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 12:05:37,577 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 12:05:37,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:37,577 INFO L82 PathProgramCache]: Analyzing trace with hash 9425446, now seen corresponding path program 2 times [2020-04-18 12:05:37,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 12:05:37,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710761456] [2020-04-18 12:05:37,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 12:05:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 12:05:37,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 12:05:37,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710761456] [2020-04-18 12:05:37,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 12:05:37,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 12:05:37,605 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 12:05:37,605 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 12:05:37,606 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 12:05:37,606 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 12:05:37,609 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 12:05:37,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 12:05:37,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 12:05:37,610 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2020-04-18 12:05:37,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 12:05:37,611 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2020-04-18 12:05:37,611 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2020-04-18 12:05:37,611 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 12:05:37,612 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1604643607] [2020-04-18 12:05:37,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 12:05:37,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 12:05:37,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1604643607] [2020-04-18 12:05:37,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 12:05:37,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 12:05:37,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 12:05:37,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 12:05:37,614 INFO L87 Difference]: Start difference. First operand 749 states. Second operand 3 states. [2020-04-18 12:05:37,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 12:05:37,647 INFO L93 Difference]: Finished difference Result 421 states and 1176 transitions. [2020-04-18 12:05:37,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 12:05:37,648 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-04-18 12:05:37,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 12:05:37,657 INFO L225 Difference]: With dead ends: 421 [2020-04-18 12:05:37,657 INFO L226 Difference]: Without dead ends: 421 [2020-04-18 12:05:37,658 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 12:05:37,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-04-18 12:05:37,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2020-04-18 12:05:37,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-04-18 12:05:37,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 1176 transitions. [2020-04-18 12:05:37,731 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 1176 transitions. Word has length 4 [2020-04-18 12:05:37,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 12:05:37,733 INFO L479 AbstractCegarLoop]: Abstraction has 421 states and 1176 transitions. [2020-04-18 12:05:37,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 12:05:37,734 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 1176 transitions. [2020-04-18 12:05:37,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 12:05:37,735 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 12:05:37,735 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 12:05:37,735 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 12:05:37,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:37,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1692799425, now seen corresponding path program 1 times [2020-04-18 12:05:37,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 12:05:37,738 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [122356787] [2020-04-18 12:05:37,739 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 12:05:37,742 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 34 transitions. [2020-04-18 12:05:37,742 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-04-18 12:05:37,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 12:05:37,743 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 12:05:37,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:37,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1692799425, now seen corresponding path program 2 times [2020-04-18 12:05:37,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 12:05:37,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341092670] [2020-04-18 12:05:37,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 12:05:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 12:05:37,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 12:05:37,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341092670] [2020-04-18 12:05:37,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 12:05:37,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 12:05:37,806 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 12:05:37,807 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 12:05:37,809 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-04-18 12:05:37,809 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 12:05:37,822 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 12:05:37,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 12:05:37,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 12:05:37,823 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2020-04-18 12:05:37,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 12:05:37,834 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2020-04-18 12:05:37,834 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-04-18 12:05:37,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 12:05:37,835 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 12:05:37,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:37,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1525063231, now seen corresponding path program 3 times [2020-04-18 12:05:37,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 12:05:37,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127356648] [2020-04-18 12:05:37,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 12:05:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 12:05:37,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 12:05:37,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127356648] [2020-04-18 12:05:37,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 12:05:37,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 12:05:37,867 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 12:05:37,868 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 12:05:37,869 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 12:05:37,869 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 12:05:37,889 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 12:05:37,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 12:05:37,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 12:05:37,890 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2020-04-18 12:05:37,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 12:05:37,902 INFO L93 Difference]: Finished difference Result 26 states and 35 transitions. [2020-04-18 12:05:37,903 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2020-04-18 12:05:37,903 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 12:05:37,903 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [122356787] [2020-04-18 12:05:37,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 12:05:37,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 12:05:37,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [122356787] [2020-04-18 12:05:37,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 12:05:37,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 12:05:37,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 12:05:37,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 12:05:37,905 INFO L87 Difference]: Start difference. First operand 421 states and 1176 transitions. Second operand 5 states. [2020-04-18 12:05:37,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 12:05:37,962 INFO L93 Difference]: Finished difference Result 319 states and 912 transitions. [2020-04-18 12:05:37,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 12:05:37,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 12:05:37,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 12:05:37,967 INFO L225 Difference]: With dead ends: 319 [2020-04-18 12:05:37,967 INFO L226 Difference]: Without dead ends: 319 [2020-04-18 12:05:37,968 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 12:05:37,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-04-18 12:05:37,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2020-04-18 12:05:37,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-04-18 12:05:37,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 912 transitions. [2020-04-18 12:05:37,989 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 912 transitions. Word has length 10 [2020-04-18 12:05:37,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 12:05:37,989 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 912 transitions. [2020-04-18 12:05:37,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 12:05:37,989 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 912 transitions. [2020-04-18 12:05:37,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 12:05:37,991 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 12:05:37,991 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2020-04-18 12:05:37,991 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 12:05:37,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:37,992 INFO L82 PathProgramCache]: Analyzing trace with hash 790757285, now seen corresponding path program 1 times [2020-04-18 12:05:37,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 12:05:37,992 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [358457556] [2020-04-18 12:05:37,993 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 12:05:37,993 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-04-18 12:05:37,993 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-04-18 12:05:37,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 12:05:37,994 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 12:05:37,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:37,994 INFO L82 PathProgramCache]: Analyzing trace with hash 790757285, now seen corresponding path program 2 times [2020-04-18 12:05:37,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 12:05:37,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267433502] [2020-04-18 12:05:37,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 12:05:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 12:05:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 12:05:38,019 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 12:05:38,019 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 12:05:38,019 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 12:05:38,020 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 12:05:38,020 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-04-18 12:05:38,027 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,027 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,027 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,027 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,028 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,028 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,028 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,028 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,029 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,029 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,029 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,029 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,030 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,030 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,030 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,030 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,030 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,031 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,031 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,031 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,031 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,031 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,032 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,032 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,032 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,033 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,033 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,033 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,035 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,035 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,035 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,035 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,037 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,037 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,037 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,038 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,039 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,039 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,040 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,040 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:38,041 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-04-18 12:05:38,042 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 12:05:38,042 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 12:05:38,042 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 12:05:38,042 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 12:05:38,042 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 12:05:38,042 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 12:05:38,042 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 12:05:38,042 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 12:05:38,044 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 58 transitions, 148 flow [2020-04-18 12:05:38,044 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 148 flow [2020-04-18 12:05:38,054 INFO L129 PetriNetUnfolder]: 9/93 cut-off events. [2020-04-18 12:05:38,054 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-04-18 12:05:38,055 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. [2020-04-18 12:05:38,058 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 148 flow [2020-04-18 12:05:38,067 INFO L129 PetriNetUnfolder]: 9/93 cut-off events. [2020-04-18 12:05:38,068 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-04-18 12:05:38,069 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. [2020-04-18 12:05:38,071 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1800 [2020-04-18 12:05:38,071 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 12:05:38,594 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3606 [2020-04-18 12:05:38,594 INFO L214 etLargeBlockEncoding]: Total number of compositions: 37 [2020-04-18 12:05:38,595 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 31 transitions, 94 flow [2020-04-18 12:05:39,176 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7269 states. [2020-04-18 12:05:39,177 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states. [2020-04-18 12:05:39,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 12:05:39,177 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 12:05:39,177 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-04-18 12:05:39,178 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 12:05:39,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:39,178 INFO L82 PathProgramCache]: Analyzing trace with hash 12782696, now seen corresponding path program 1 times [2020-04-18 12:05:39,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 12:05:39,179 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1384545110] [2020-04-18 12:05:39,179 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 12:05:39,180 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 12:05:39,180 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-04-18 12:05:39,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 12:05:39,180 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 12:05:39,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:39,181 INFO L82 PathProgramCache]: Analyzing trace with hash 12782696, now seen corresponding path program 2 times [2020-04-18 12:05:39,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 12:05:39,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900415436] [2020-04-18 12:05:39,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 12:05:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 12:05:39,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 12:05:39,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900415436] [2020-04-18 12:05:39,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 12:05:39,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 12:05:39,211 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 12:05:39,211 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 12:05:39,211 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 12:05:39,212 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 12:05:39,215 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 12:05:39,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 12:05:39,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 12:05:39,216 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2020-04-18 12:05:39,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 12:05:39,216 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2020-04-18 12:05:39,216 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2020-04-18 12:05:39,217 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 12:05:39,217 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1384545110] [2020-04-18 12:05:39,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 12:05:39,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 12:05:39,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1384545110] [2020-04-18 12:05:39,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 12:05:39,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 12:05:39,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 12:05:39,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 12:05:39,219 INFO L87 Difference]: Start difference. First operand 7269 states. Second operand 3 states. [2020-04-18 12:05:39,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 12:05:39,328 INFO L93 Difference]: Finished difference Result 4227 states and 15765 transitions. [2020-04-18 12:05:39,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 12:05:39,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-04-18 12:05:39,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 12:05:39,374 INFO L225 Difference]: With dead ends: 4227 [2020-04-18 12:05:39,374 INFO L226 Difference]: Without dead ends: 4227 [2020-04-18 12:05:39,375 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 12:05:39,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4227 states. [2020-04-18 12:05:39,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4227 to 4227. [2020-04-18 12:05:39,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4227 states. [2020-04-18 12:05:39,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4227 states to 4227 states and 15765 transitions. [2020-04-18 12:05:39,676 INFO L78 Accepts]: Start accepts. Automaton has 4227 states and 15765 transitions. Word has length 4 [2020-04-18 12:05:39,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 12:05:39,676 INFO L479 AbstractCegarLoop]: Abstraction has 4227 states and 15765 transitions. [2020-04-18 12:05:39,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 12:05:39,677 INFO L276 IsEmpty]: Start isEmpty. Operand 4227 states and 15765 transitions. [2020-04-18 12:05:39,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 12:05:39,677 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 12:05:39,678 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 12:05:39,678 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 12:05:39,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:39,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1357463974, now seen corresponding path program 1 times [2020-04-18 12:05:39,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 12:05:39,679 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1720259055] [2020-04-18 12:05:39,679 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 12:05:39,680 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-04-18 12:05:39,680 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-04-18 12:05:39,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 12:05:39,681 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 12:05:39,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:39,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1650114346, now seen corresponding path program 2 times [2020-04-18 12:05:39,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 12:05:39,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383621337] [2020-04-18 12:05:39,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 12:05:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 12:05:39,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 12:05:39,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383621337] [2020-04-18 12:05:39,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 12:05:39,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 12:05:39,734 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 12:05:39,735 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 12:05:39,741 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 12:05:39,741 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 12:05:39,769 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 12:05:39,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 12:05:39,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 12:05:39,770 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2020-04-18 12:05:39,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 12:05:39,780 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2020-04-18 12:05:39,780 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-04-18 12:05:39,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 12:05:39,784 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 12:05:39,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:39,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1357463974, now seen corresponding path program 3 times [2020-04-18 12:05:39,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 12:05:39,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545343087] [2020-04-18 12:05:39,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 12:05:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 12:05:39,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 12:05:39,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545343087] [2020-04-18 12:05:39,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 12:05:39,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 12:05:39,821 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 12:05:39,822 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 12:05:39,823 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 12:05:39,823 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 12:05:39,835 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 12:05:39,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 12:05:39,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 12:05:39,836 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 3 states. [2020-04-18 12:05:39,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 12:05:39,842 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-04-18 12:05:39,842 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-04-18 12:05:39,843 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 12:05:39,843 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1720259055] [2020-04-18 12:05:39,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 12:05:39,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 12:05:39,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1720259055] [2020-04-18 12:05:39,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 12:05:39,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 12:05:39,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 12:05:39,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 12:05:39,846 INFO L87 Difference]: Start difference. First operand 4227 states and 15765 transitions. Second operand 5 states. [2020-04-18 12:05:39,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 12:05:39,952 INFO L93 Difference]: Finished difference Result 1975 states and 7342 transitions. [2020-04-18 12:05:39,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 12:05:39,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 12:05:39,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 12:05:39,974 INFO L225 Difference]: With dead ends: 1975 [2020-04-18 12:05:39,974 INFO L226 Difference]: Without dead ends: 1975 [2020-04-18 12:05:39,975 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 12:05:39,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2020-04-18 12:05:40,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1975. [2020-04-18 12:05:40,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2020-04-18 12:05:40,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 7342 transitions. [2020-04-18 12:05:40,046 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 7342 transitions. Word has length 10 [2020-04-18 12:05:40,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 12:05:40,046 INFO L479 AbstractCegarLoop]: Abstraction has 1975 states and 7342 transitions. [2020-04-18 12:05:40,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 12:05:40,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 7342 transitions. [2020-04-18 12:05:40,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 12:05:40,050 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 12:05:40,050 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-04-18 12:05:40,051 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 12:05:40,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:40,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1886547670, now seen corresponding path program 1 times [2020-04-18 12:05:40,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 12:05:40,057 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [38228600] [2020-04-18 12:05:40,057 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 12:05:40,058 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-04-18 12:05:40,059 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 12:05:40,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 12:05:40,059 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 12:05:40,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:40,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1886547670, now seen corresponding path program 2 times [2020-04-18 12:05:40,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 12:05:40,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403086778] [2020-04-18 12:05:40,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 12:05:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 12:05:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 12:05:40,106 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 12:05:40,107 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 12:05:40,107 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 12:05:40,110 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 12:05:40,111 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-04-18 12:05:40,118 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,118 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,118 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,118 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,119 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,119 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,119 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,119 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,119 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,120 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,121 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,121 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,121 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,121 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,121 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,121 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,122 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,122 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,124 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,124 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,124 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,124 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,125 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,125 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,125 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,126 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,126 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,126 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,127 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,127 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,127 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,127 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,128 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,128 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,129 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,129 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,130 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,130 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,131 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,131 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,131 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,132 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,134 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,134 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,135 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,135 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,136 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,136 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,137 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,137 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:40,138 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-04-18 12:05:40,138 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 12:05:40,138 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 12:05:40,139 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 12:05:40,139 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 12:05:40,139 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 12:05:40,139 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 12:05:40,139 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 12:05:40,139 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 12:05:40,140 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 68 transitions, 181 flow [2020-04-18 12:05:40,140 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 181 flow [2020-04-18 12:05:40,152 INFO L129 PetriNetUnfolder]: 11/112 cut-off events. [2020-04-18 12:05:40,153 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-04-18 12:05:40,154 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. [2020-04-18 12:05:40,158 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 181 flow [2020-04-18 12:05:40,168 INFO L129 PetriNetUnfolder]: 11/112 cut-off events. [2020-04-18 12:05:40,168 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-04-18 12:05:40,169 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. [2020-04-18 12:05:40,173 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2700 [2020-04-18 12:05:40,173 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 12:05:40,785 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2020-04-18 12:05:40,874 INFO L206 etLargeBlockEncoding]: Checked pairs total: 5637 [2020-04-18 12:05:40,874 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2020-04-18 12:05:40,875 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 37 transitions, 119 flow [2020-04-18 12:05:46,939 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 36397 states. [2020-04-18 12:05:46,940 INFO L276 IsEmpty]: Start isEmpty. Operand 36397 states. [2020-04-18 12:05:46,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 12:05:46,940 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 12:05:46,940 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-04-18 12:05:46,940 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]=== [2020-04-18 12:05:46,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:46,941 INFO L82 PathProgramCache]: Analyzing trace with hash 16657360, now seen corresponding path program 1 times [2020-04-18 12:05:46,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 12:05:46,941 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1425945010] [2020-04-18 12:05:46,941 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 12:05:46,941 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 12:05:46,942 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-04-18 12:05:46,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 12:05:46,942 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 12:05:46,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:46,942 INFO L82 PathProgramCache]: Analyzing trace with hash 16657360, now seen corresponding path program 2 times [2020-04-18 12:05:46,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 12:05:46,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157010968] [2020-04-18 12:05:46,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 12:05:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 12:05:46,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 12:05:46,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157010968] [2020-04-18 12:05:46,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 12:05:46,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 12:05:46,968 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 12:05:46,968 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 12:05:46,969 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 12:05:46,969 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 12:05:46,972 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 12:05:46,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 12:05:46,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 12:05:46,972 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2020-04-18 12:05:46,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 12:05:46,973 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2020-04-18 12:05:46,973 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2020-04-18 12:05:46,973 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 12:05:46,974 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1425945010] [2020-04-18 12:05:46,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 12:05:46,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 12:05:46,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1425945010] [2020-04-18 12:05:46,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 12:05:46,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 12:05:46,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 12:05:46,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 12:05:46,975 INFO L87 Difference]: Start difference. First operand 36397 states. Second operand 3 states. [2020-04-18 12:05:47,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 12:05:47,300 INFO L93 Difference]: Finished difference Result 22246 states and 100423 transitions. [2020-04-18 12:05:47,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 12:05:47,301 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-04-18 12:05:47,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 12:05:47,498 INFO L225 Difference]: With dead ends: 22246 [2020-04-18 12:05:47,498 INFO L226 Difference]: Without dead ends: 22246 [2020-04-18 12:05:47,499 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 12:05:48,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22246 states. [2020-04-18 12:05:49,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22246 to 22246. [2020-04-18 12:05:49,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22246 states. [2020-04-18 12:05:49,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22246 states to 22246 states and 100423 transitions. [2020-04-18 12:05:49,993 INFO L78 Accepts]: Start accepts. Automaton has 22246 states and 100423 transitions. Word has length 4 [2020-04-18 12:05:49,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 12:05:49,993 INFO L479 AbstractCegarLoop]: Abstraction has 22246 states and 100423 transitions. [2020-04-18 12:05:49,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 12:05:49,994 INFO L276 IsEmpty]: Start isEmpty. Operand 22246 states and 100423 transitions. [2020-04-18 12:05:49,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 12:05:49,994 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 12:05:49,994 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 12:05:49,994 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]=== [2020-04-18 12:05:49,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:49,995 INFO L82 PathProgramCache]: Analyzing trace with hash -667162749, now seen corresponding path program 1 times [2020-04-18 12:05:49,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 12:05:49,995 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1084938258] [2020-04-18 12:05:49,995 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 12:05:49,996 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 34 transitions. [2020-04-18 12:05:49,996 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-04-18 12:05:49,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 12:05:49,996 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 12:05:49,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:49,997 INFO L82 PathProgramCache]: Analyzing trace with hash -667160499, now seen corresponding path program 2 times [2020-04-18 12:05:49,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 12:05:49,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382299902] [2020-04-18 12:05:49,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 12:05:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 12:05:50,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 12:05:50,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382299902] [2020-04-18 12:05:50,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 12:05:50,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 12:05:50,031 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 12:05:50,035 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 12:05:50,036 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-04-18 12:05:50,036 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 12:05:50,039 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 12:05:50,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 12:05:50,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 12:05:50,040 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2020-04-18 12:05:50,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 12:05:50,045 INFO L93 Difference]: Finished difference Result 24 states and 34 transitions. [2020-04-18 12:05:50,045 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2020-04-18 12:05:50,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 12:05:50,045 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 12:05:50,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:50,046 INFO L82 PathProgramCache]: Analyzing trace with hash -667162749, now seen corresponding path program 3 times [2020-04-18 12:05:50,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 12:05:50,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296285420] [2020-04-18 12:05:50,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 12:05:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 12:05:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-18 12:05:50,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296285420] [2020-04-18 12:05:50,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 12:05:50,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 12:05:50,069 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 12:05:50,069 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 12:05:50,070 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-04-18 12:05:50,070 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 12:05:50,076 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 12:05:50,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 12:05:50,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 12:05:50,077 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 3 states. [2020-04-18 12:05:50,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 12:05:50,081 INFO L93 Difference]: Finished difference Result 26 states and 35 transitions. [2020-04-18 12:05:50,081 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2020-04-18 12:05:50,081 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 12:05:50,082 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1084938258] [2020-04-18 12:05:50,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 12:05:50,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 12:05:50,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1084938258] [2020-04-18 12:05:50,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 12:05:50,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 12:05:50,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 12:05:50,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 12:05:50,083 INFO L87 Difference]: Start difference. First operand 22246 states and 100423 transitions. Second operand 4 states. [2020-04-18 12:05:50,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 12:05:50,209 INFO L93 Difference]: Finished difference Result 7918 states and 35335 transitions. [2020-04-18 12:05:50,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 12:05:50,210 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 12:05:50,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 12:05:50,264 INFO L225 Difference]: With dead ends: 7918 [2020-04-18 12:05:50,264 INFO L226 Difference]: Without dead ends: 7918 [2020-04-18 12:05:50,265 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 12:05:50,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7918 states. [2020-04-18 12:05:50,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7918 to 7918. [2020-04-18 12:05:50,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7918 states. [2020-04-18 12:05:50,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7918 states to 7918 states and 35335 transitions. [2020-04-18 12:05:50,621 INFO L78 Accepts]: Start accepts. Automaton has 7918 states and 35335 transitions. Word has length 10 [2020-04-18 12:05:50,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 12:05:50,621 INFO L479 AbstractCegarLoop]: Abstraction has 7918 states and 35335 transitions. [2020-04-18 12:05:50,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 12:05:50,622 INFO L276 IsEmpty]: Start isEmpty. Operand 7918 states and 35335 transitions. [2020-04-18 12:05:50,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 12:05:50,625 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 12:05:50,626 INFO L425 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 12:05:50,626 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]=== [2020-04-18 12:05:50,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:50,626 INFO L82 PathProgramCache]: Analyzing trace with hash 369573413, now seen corresponding path program 1 times [2020-04-18 12:05:50,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 12:05:50,627 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [948463877] [2020-04-18 12:05:50,628 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 12:05:50,628 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 18 transitions. [2020-04-18 12:05:50,629 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-04-18 12:05:50,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 12:05:50,629 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 12:05:50,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 12:05:50,630 INFO L82 PathProgramCache]: Analyzing trace with hash 369573413, now seen corresponding path program 2 times [2020-04-18 12:05:50,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 12:05:50,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750662179] [2020-04-18 12:05:50,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 12:05:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 12:05:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 12:05:50,650 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 12:05:50,651 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 12:05:50,651 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 12:05:50,652 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 12:05:50,652 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-04-18 12:05:50,661 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,661 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,661 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,661 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,662 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,662 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,662 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,662 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,662 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,662 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,663 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,663 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,663 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,663 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,664 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,664 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,664 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,664 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,664 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,665 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,665 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,665 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,665 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,665 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,666 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,666 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,666 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,666 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,666 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,666 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,667 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,667 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,667 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,667 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,668 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,668 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,668 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,668 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,669 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,669 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,671 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,672 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,672 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,672 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,674 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,675 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,675 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,675 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,677 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,678 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,678 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,678 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,680 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,680 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,680 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,680 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,682 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,682 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,682 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,682 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 12:05:50,684 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-04-18 12:05:50,684 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 12:05:50,684 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 12:05:50,684 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 12:05:50,685 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 12:05:50,685 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 12:05:50,685 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 12:05:50,685 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 12:05:50,685 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 12:05:50,686 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 78 transitions, 216 flow [2020-04-18 12:05:50,687 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 78 transitions, 216 flow [2020-04-18 12:05:50,701 INFO L129 PetriNetUnfolder]: 13/131 cut-off events. [2020-04-18 12:05:50,702 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-04-18 12:05:50,703 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. [2020-04-18 12:05:50,709 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 78 transitions, 216 flow [2020-04-18 12:05:50,723 INFO L129 PetriNetUnfolder]: 13/131 cut-off events. [2020-04-18 12:05:50,723 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-04-18 12:05:50,725 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. [2020-04-18 12:05:50,730 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3780 [2020-04-18 12:05:50,730 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 12:05:51,076 WARN L192 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2020-04-18 12:05:51,666 INFO L206 etLargeBlockEncoding]: Checked pairs total: 9546 [2020-04-18 12:05:51,666 INFO L214 etLargeBlockEncoding]: Total number of compositions: 50 [2020-04-18 12:05:51,667 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 48 transitions, 156 flow Received shutdown request... [2020-04-18 12:10:03,596 WARN L544 AbstractCegarLoop]: Verification canceled [2020-04-18 12:10:03,600 WARN L228 ceAbstractionStarter]: Timeout [2020-04-18 12:10:03,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 12:10:03 BasicIcfg [2020-04-18 12:10:03,600 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 12:10:03,602 INFO L168 Benchmark]: Toolchain (without parser) took 269965.32 ms. Allocated memory was 138.4 MB in the beginning and 2.7 GB in the end (delta: 2.6 GB). Free memory was 100.3 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2020-04-18 12:10:03,602 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 12:10:03,603 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.73 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 98.3 MB in the beginning and 162.1 MB in the end (delta: -63.7 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-04-18 12:10:03,603 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.19 ms. Allocated memory is still 202.9 MB. Free memory was 162.1 MB in the beginning and 160.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 12:10:03,604 INFO L168 Benchmark]: Boogie Preprocessor took 26.09 ms. Allocated memory is still 202.9 MB. Free memory was 160.1 MB in the beginning and 158.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 12:10:03,605 INFO L168 Benchmark]: RCFGBuilder took 369.98 ms. Allocated memory is still 202.9 MB. Free memory was 158.8 MB in the beginning and 143.4 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2020-04-18 12:10:03,605 INFO L168 Benchmark]: TraceAbstraction took 268768.53 ms. Allocated memory was 202.9 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 142.7 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2020-04-18 12:10:03,609 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 731.73 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 98.3 MB in the beginning and 162.1 MB in the end (delta: -63.7 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.19 ms. Allocated memory is still 202.9 MB. Free memory was 162.1 MB in the beginning and 160.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.09 ms. Allocated memory is still 202.9 MB. Free memory was 160.1 MB in the beginning and 158.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 369.98 ms. Allocated memory is still 202.9 MB. Free memory was 158.8 MB in the beginning and 143.4 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 268768.53 ms. Allocated memory was 202.9 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 142.7 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.6 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: 0.5s, 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: 0.7s, 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: 0.9s, 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 272838 states. Currently 35741 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 268.5s, OverallIterations: 13, TraceHistogramMax: 6, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 262.7s, HoareTripleCheckerStatistics: 167 SDtfs, 132 SDslu, 104 SDs, 0 SdLazy, 148 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36397occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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