/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-ext/16_peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 23:06:49,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 23:06:49,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 23:06:49,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 23:06:49,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 23:06:49,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 23:06:49,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 23:06:49,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 23:06:49,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 23:06:49,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 23:06:49,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 23:06:49,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 23:06:49,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 23:06:49,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 23:06:49,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 23:06:49,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 23:06:49,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 23:06:49,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 23:06:49,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 23:06:49,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 23:06:49,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 23:06:49,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 23:06:49,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 23:06:49,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 23:06:49,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 23:06:49,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 23:06:49,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 23:06:49,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 23:06:49,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 23:06:49,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 23:06:49,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 23:06:49,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 23:06:49,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 23:06:49,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 23:06:49,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 23:06:49,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 23:06:49,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 23:06:49,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 23:06:49,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 23:06:49,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 23:06:49,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 23:06:49,467 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2020-04-17 23:06:49,500 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 23:06:49,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 23:06:49,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 23:06:49,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 23:06:49,504 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 23:06:49,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 23:06:49,505 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 23:06:49,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 23:06:49,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 23:06:49,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 23:06:49,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 23:06:49,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 23:06:49,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 23:06:49,506 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 23:06:49,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 23:06:49,508 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 23:06:49,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 23:06:49,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 23:06:49,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 23:06:49,509 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 23:06:49,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 23:06:49,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 23:06:49,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 23:06:49,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 23:06:49,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 23:06:49,510 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 23:06:49,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 23:06:49,511 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-17 23:06:49,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 23:06:49,511 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 23:06:49,792 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 23:06:49,805 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 23:06:49,808 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 23:06:49,810 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 23:06:49,810 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 23:06:49,811 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/16_peterson.i [2020-04-17 23:06:49,873 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/003f5715b/33712cebf83c4550a7c61abd3feb2fa5/FLAG047d533b3 [2020-04-17 23:06:50,380 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 23:06:50,383 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/16_peterson.i [2020-04-17 23:06:50,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/003f5715b/33712cebf83c4550a7c61abd3feb2fa5/FLAG047d533b3 [2020-04-17 23:06:50,705 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/003f5715b/33712cebf83c4550a7c61abd3feb2fa5 [2020-04-17 23:06:50,713 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 23:06:50,735 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 23:06:50,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 23:06:50,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 23:06:50,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 23:06:50,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 11:06:50" (1/1) ... [2020-04-17 23:06:50,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2215742e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:06:50, skipping insertion in model container [2020-04-17 23:06:50,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 11:06:50" (1/1) ... [2020-04-17 23:06:50,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 23:06:50,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 23:06:51,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 23:06:51,352 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 23:06:51,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 23:06:51,453 INFO L208 MainTranslator]: Completed translation [2020-04-17 23:06:51,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:06:51 WrapperNode [2020-04-17 23:06:51,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 23:06:51,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 23:06:51,455 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 23:06:51,455 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 23:06:51,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:06:51" (1/1) ... [2020-04-17 23:06:51,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:06:51" (1/1) ... [2020-04-17 23:06:51,522 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 23:06:51,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 23:06:51,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 23:06:51,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 23:06:51,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:06:51" (1/1) ... [2020-04-17 23:06:51,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:06:51" (1/1) ... [2020-04-17 23:06:51,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:06:51" (1/1) ... [2020-04-17 23:06:51,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:06:51" (1/1) ... [2020-04-17 23:06:51,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:06:51" (1/1) ... [2020-04-17 23:06:51,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:06:51" (1/1) ... [2020-04-17 23:06:51,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:06:51" (1/1) ... [2020-04-17 23:06:51,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 23:06:51,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 23:06:51,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 23:06:51,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 23:06:51,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:06:51" (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 [2020-04-17 23:06:51,622 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-04-17 23:06:51,623 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-04-17 23:06:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 23:06:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 23:06:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 23:06:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 23:06:51,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 23:06:51,625 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 23:06:51,934 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 23:06:51,935 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 23:06:51,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 11:06:51 BoogieIcfgContainer [2020-04-17 23:06:51,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 23:06:51,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 23:06:51,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 23:06:51,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 23:06:51,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 11:06:50" (1/3) ... [2020-04-17 23:06:51,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa1ee75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 11:06:51, skipping insertion in model container [2020-04-17 23:06:51,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:06:51" (2/3) ... [2020-04-17 23:06:51,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa1ee75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 11:06:51, skipping insertion in model container [2020-04-17 23:06:51,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 11:06:51" (3/3) ... [2020-04-17 23:06:51,952 INFO L109 eAbstractionObserver]: Analyzing ICFG 16_peterson.i [2020-04-17 23:06:51,962 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 23:06:51,963 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 23:06:51,971 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-04-17 23:06:51,972 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 23:06:51,994 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:06:51,994 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:06:51,995 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:06:51,995 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:06:51,996 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:06:51,996 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:06:52,000 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:06:52,000 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:06:52,000 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:06:52,001 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:06:52,019 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 23:06:52,040 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 23:06:52,040 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 23:06:52,041 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 23:06:52,041 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 23:06:52,041 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 23:06:52,041 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 23:06:52,042 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 23:06:52,042 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 23:06:52,055 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 51 transitions, 107 flow [2020-04-17 23:06:52,057 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions, 107 flow [2020-04-17 23:06:52,092 INFO L129 PetriNetUnfolder]: 6/50 cut-off events. [2020-04-17 23:06:52,092 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 23:06:52,097 INFO L80 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 50 events. 6/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2020-04-17 23:06:52,099 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions, 107 flow [2020-04-17 23:06:52,114 INFO L129 PetriNetUnfolder]: 6/50 cut-off events. [2020-04-17 23:06:52,115 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 23:06:52,115 INFO L80 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 50 events. 6/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2020-04-17 23:06:52,117 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-04-17 23:06:52,118 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-17 23:06:52,947 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1328 [2020-04-17 23:06:52,947 INFO L214 etLargeBlockEncoding]: Total number of compositions: 35 [2020-04-17 23:06:52,954 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 23 transitions, 51 flow [2020-04-17 23:06:52,971 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-04-17 23:06:52,974 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-17 23:06:52,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-17 23:06:52,982 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:06:52,983 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-17 23:06:52,983 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:06:52,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:06:52,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1942834628, now seen corresponding path program 1 times [2020-04-17 23:06:53,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:06:53,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492072897] [2020-04-17 23:06:53,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:06:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:06:53,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:06:53,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492072897] [2020-04-17 23:06:53,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:06:53,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:06:53,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458127112] [2020-04-17 23:06:53,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 23:06:53,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:06:53,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 23:06:53,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 23:06:53,276 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 2 states. [2020-04-17 23:06:53,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:06:53,301 INFO L93 Difference]: Finished difference Result 74 states and 146 transitions. [2020-04-17 23:06:53,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 23:06:53,303 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-04-17 23:06:53,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:06:53,342 INFO L225 Difference]: With dead ends: 74 [2020-04-17 23:06:53,342 INFO L226 Difference]: Without dead ends: 68 [2020-04-17 23:06:53,344 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 23:06:53,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-04-17 23:06:53,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-04-17 23:06:53,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-04-17 23:06:53,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 134 transitions. [2020-04-17 23:06:53,407 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 134 transitions. Word has length 6 [2020-04-17 23:06:53,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:06:53,408 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 134 transitions. [2020-04-17 23:06:53,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 23:06:53,409 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 134 transitions. [2020-04-17 23:06:53,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-17 23:06:53,410 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:06:53,410 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:06:53,410 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:06:53,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:06:53,411 INFO L82 PathProgramCache]: Analyzing trace with hash 98318518, now seen corresponding path program 1 times [2020-04-17 23:06:53,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:06:53,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403736460] [2020-04-17 23:06:53,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:06:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:06:53,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:06:53,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403736460] [2020-04-17 23:06:53,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:06:53,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:06:53,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686454034] [2020-04-17 23:06:53,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:06:53,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:06:53,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:06:53,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:06:53,484 INFO L87 Difference]: Start difference. First operand 68 states and 134 transitions. Second operand 3 states. [2020-04-17 23:06:53,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:06:53,530 INFO L93 Difference]: Finished difference Result 73 states and 134 transitions. [2020-04-17 23:06:53,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:06:53,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-04-17 23:06:53,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:06:53,534 INFO L225 Difference]: With dead ends: 73 [2020-04-17 23:06:53,535 INFO L226 Difference]: Without dead ends: 58 [2020-04-17 23:06:53,535 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:06:53,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-04-17 23:06:53,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-04-17 23:06:53,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-04-17 23:06:53,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 101 transitions. [2020-04-17 23:06:53,552 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 101 transitions. Word has length 7 [2020-04-17 23:06:53,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:06:53,552 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 101 transitions. [2020-04-17 23:06:53,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:06:53,552 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 101 transitions. [2020-04-17 23:06:53,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-17 23:06:53,553 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:06:53,553 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:06:53,553 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:06:53,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:06:53,554 INFO L82 PathProgramCache]: Analyzing trace with hash 114699826, now seen corresponding path program 1 times [2020-04-17 23:06:53,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:06:53,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022812033] [2020-04-17 23:06:53,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:06:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:06:53,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:06:53,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022812033] [2020-04-17 23:06:53,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:06:53,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:06:53,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416449503] [2020-04-17 23:06:53,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:06:53,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:06:53,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:06:53,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:06:53,627 INFO L87 Difference]: Start difference. First operand 54 states and 101 transitions. Second operand 3 states. [2020-04-17 23:06:53,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:06:53,645 INFO L93 Difference]: Finished difference Result 48 states and 85 transitions. [2020-04-17 23:06:53,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:06:53,647 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-04-17 23:06:53,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:06:53,648 INFO L225 Difference]: With dead ends: 48 [2020-04-17 23:06:53,648 INFO L226 Difference]: Without dead ends: 38 [2020-04-17 23:06:53,650 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:06:53,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-04-17 23:06:53,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-04-17 23:06:53,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-04-17 23:06:53,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 66 transitions. [2020-04-17 23:06:53,658 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 66 transitions. Word has length 7 [2020-04-17 23:06:53,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:06:53,658 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 66 transitions. [2020-04-17 23:06:53,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:06:53,659 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 66 transitions. [2020-04-17 23:06:53,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 23:06:53,659 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:06:53,660 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:06:53,660 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:06:53,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:06:53,660 INFO L82 PathProgramCache]: Analyzing trace with hash -480213144, now seen corresponding path program 1 times [2020-04-17 23:06:53,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:06:53,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464887758] [2020-04-17 23:06:53,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:06:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:06:53,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:06:53,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464887758] [2020-04-17 23:06:53,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:06:53,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 23:06:53,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452388460] [2020-04-17 23:06:53,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:06:53,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:06:53,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:06:53,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:06:53,724 INFO L87 Difference]: Start difference. First operand 38 states and 66 transitions. Second operand 4 states. [2020-04-17 23:06:53,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:06:53,749 INFO L93 Difference]: Finished difference Result 43 states and 75 transitions. [2020-04-17 23:06:53,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 23:06:53,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 23:06:53,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:06:53,751 INFO L225 Difference]: With dead ends: 43 [2020-04-17 23:06:53,751 INFO L226 Difference]: Without dead ends: 34 [2020-04-17 23:06:53,751 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:06:53,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-04-17 23:06:53,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-04-17 23:06:53,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-04-17 23:06:53,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 53 transitions. [2020-04-17 23:06:53,756 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 53 transitions. Word has length 11 [2020-04-17 23:06:53,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:06:53,757 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 53 transitions. [2020-04-17 23:06:53,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:06:53,757 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 53 transitions. [2020-04-17 23:06:53,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 23:06:53,758 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:06:53,758 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:06:53,758 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:06:53,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:06:53,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1657399704, now seen corresponding path program 2 times [2020-04-17 23:06:53,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:06:53,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999452491] [2020-04-17 23:06:53,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:06:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:06:53,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:06:53,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999452491] [2020-04-17 23:06:53,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:06:53,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 23:06:53,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146581892] [2020-04-17 23:06:53,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:06:53,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:06:53,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:06:53,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:06:53,827 INFO L87 Difference]: Start difference. First operand 34 states and 53 transitions. Second operand 4 states. [2020-04-17 23:06:53,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:06:53,842 INFO L93 Difference]: Finished difference Result 17 states and 29 transitions. [2020-04-17 23:06:53,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 23:06:53,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 23:06:53,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:06:53,844 INFO L225 Difference]: With dead ends: 17 [2020-04-17 23:06:53,844 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 23:06:53,844 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:06:53,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 23:06:53,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 23:06:53,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 23:06:53,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 23:06:53,845 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-04-17 23:06:53,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:06:53,845 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 23:06:53,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:06:53,846 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 23:06:53,846 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 23:06:53,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 11:06:53 BasicIcfg [2020-04-17 23:06:53,851 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 23:06:53,856 INFO L168 Benchmark]: Toolchain (without parser) took 3138.09 ms. Allocated memory was 137.4 MB in the beginning and 233.3 MB in the end (delta: 95.9 MB). Free memory was 100.9 MB in the beginning and 118.6 MB in the end (delta: -17.7 MB). Peak memory consumption was 78.3 MB. Max. memory is 7.1 GB. [2020-04-17 23:06:53,858 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-17 23:06:53,859 INFO L168 Benchmark]: CACSL2BoogieTranslator took 718.96 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 99.0 MB in the beginning and 160.0 MB in the end (delta: -61.0 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-04-17 23:06:53,866 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.66 ms. Allocated memory is still 202.4 MB. Free memory was 160.0 MB in the beginning and 158.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-17 23:06:53,867 INFO L168 Benchmark]: Boogie Preprocessor took 28.01 ms. Allocated memory is still 202.4 MB. Free memory was 158.0 MB in the beginning and 156.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 23:06:53,868 INFO L168 Benchmark]: RCFGBuilder took 387.72 ms. Allocated memory is still 202.4 MB. Free memory was 156.6 MB in the beginning and 138.0 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2020-04-17 23:06:53,870 INFO L168 Benchmark]: TraceAbstraction took 1908.97 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 137.3 MB in the beginning and 118.6 MB in the end (delta: 18.7 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB. [2020-04-17 23:06:53,877 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 718.96 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 99.0 MB in the beginning and 160.0 MB in the end (delta: -61.0 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 67.66 ms. Allocated memory is still 202.4 MB. Free memory was 160.0 MB in the beginning and 158.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.01 ms. Allocated memory is still 202.4 MB. Free memory was 158.0 MB in the beginning and 156.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 387.72 ms. Allocated memory is still 202.4 MB. Free memory was 156.6 MB in the beginning and 138.0 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1908.97 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 137.3 MB in the beginning and 118.6 MB in the end (delta: 18.7 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 49 ProgramPointsBefore, 22 ProgramPointsAfterwards, 51 TransitionsBefore, 23 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 5 FixpointIterations, 10 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 346 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1328 CheckedPairsTotal, 35 TotalNumberOfCompositions - PositiveResult [Line: 681]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 690]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 46 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 95 SDtfs, 45 SDslu, 33 SDs, 0 SdLazy, 35 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 521 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...