/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/20_lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 19:44:48,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 19:44:48,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 19:44:48,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 19:44:48,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 19:44:48,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 19:44:48,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 19:44:48,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 19:44:48,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 19:44:48,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 19:44:48,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 19:44:48,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 19:44:48,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 19:44:48,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 19:44:48,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 19:44:48,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 19:44:48,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 19:44:48,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 19:44:48,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 19:44:48,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 19:44:48,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 19:44:48,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 19:44:48,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 19:44:48,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 19:44:48,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-18 19:44:48,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 19:44:48,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 19:44:48,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 19:44:48,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 19:44:48,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 19:44:48,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 19:44:48,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 19:44:48,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 19:44:48,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 19:44:48,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 19:44:48,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 19:44:48,499 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2019-12-18 19:44:48,523 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 19:44:48,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 19:44:48,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 19:44:48,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 19:44:48,526 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 19:44:48,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 19:44:48,527 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 19:44:48,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 19:44:48,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 19:44:48,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 19:44:48,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 19:44:48,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 19:44:48,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 19:44:48,529 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 19:44:48,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 19:44:48,529 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 19:44:48,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 19:44:48,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 19:44:48,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 19:44:48,531 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 19:44:48,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 19:44:48,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 19:44:48,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 19:44:48,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 19:44:48,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 19:44:48,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 19:44:48,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 19:44:48,533 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-18 19:44:48,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 19:44:48,534 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 19:44:48,832 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 19:44:48,847 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 19:44:48,851 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 19:44:48,852 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 19:44:48,852 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 19:44:48,853 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/20_lamport.i [2019-12-18 19:44:48,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ede0efb6d/2437918955d64d0788240b6e6bcb305d/FLAGebf4af6aa [2019-12-18 19:44:49,463 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 19:44:49,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/20_lamport.i [2019-12-18 19:44:49,477 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ede0efb6d/2437918955d64d0788240b6e6bcb305d/FLAGebf4af6aa [2019-12-18 19:44:49,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ede0efb6d/2437918955d64d0788240b6e6bcb305d [2019-12-18 19:44:49,772 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 19:44:49,774 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 19:44:49,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 19:44:49,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 19:44:49,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 19:44:49,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:44:49" (1/1) ... [2019-12-18 19:44:49,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c8d6807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:49, skipping insertion in model container [2019-12-18 19:44:49,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:44:49" (1/1) ... [2019-12-18 19:44:49,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 19:44:49,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 19:44:50,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 19:44:50,362 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 19:44:50,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 19:44:50,507 INFO L208 MainTranslator]: Completed translation [2019-12-18 19:44:50,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:50 WrapperNode [2019-12-18 19:44:50,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 19:44:50,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 19:44:50,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 19:44:50,509 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 19:44:50,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:50" (1/1) ... [2019-12-18 19:44:50,542 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:50" (1/1) ... [2019-12-18 19:44:50,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 19:44:50,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 19:44:50,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 19:44:50,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 19:44:50,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:50" (1/1) ... [2019-12-18 19:44:50,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:50" (1/1) ... [2019-12-18 19:44:50,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:50" (1/1) ... [2019-12-18 19:44:50,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:50" (1/1) ... [2019-12-18 19:44:50,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:50" (1/1) ... [2019-12-18 19:44:50,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:50" (1/1) ... [2019-12-18 19:44:50,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:50" (1/1) ... [2019-12-18 19:44:50,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 19:44:50,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 19:44:50,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 19:44:50,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 19:44:50,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 19:44:50,665 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-12-18 19:44:50,665 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-12-18 19:44:50,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 19:44:50,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 19:44:50,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 19:44:50,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 19:44:50,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 19:44:50,668 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-18 19:44:51,070 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 19:44:51,070 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-12-18 19:44:51,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:44:51 BoogieIcfgContainer [2019-12-18 19:44:51,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 19:44:51,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 19:44:51,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 19:44:51,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 19:44:51,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 07:44:49" (1/3) ... [2019-12-18 19:44:51,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee24330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:44:51, skipping insertion in model container [2019-12-18 19:44:51,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:50" (2/3) ... [2019-12-18 19:44:51,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee24330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:44:51, skipping insertion in model container [2019-12-18 19:44:51,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:44:51" (3/3) ... [2019-12-18 19:44:51,088 INFO L109 eAbstractionObserver]: Analyzing ICFG 20_lamport.i [2019-12-18 19:44:51,098 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 19:44:51,099 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 19:44:51,107 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-12-18 19:44:51,109 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 19:44:51,139 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:51,139 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:51,140 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:51,140 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:51,141 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:51,141 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:51,146 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:51,146 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:51,147 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:51,147 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:51,166 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-18 19:44:51,187 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 19:44:51,187 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 19:44:51,187 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 19:44:51,188 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 19:44:51,188 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 19:44:51,188 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 19:44:51,188 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 19:44:51,189 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 19:44:51,202 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 92 transitions [2019-12-18 19:44:51,204 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 72 places, 92 transitions [2019-12-18 19:44:51,249 INFO L126 PetriNetUnfolder]: 24/91 cut-off events. [2019-12-18 19:44:51,249 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:44:51,259 INFO L76 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 91 events. 24/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 162 event pairs. 3/68 useless extension candidates. Maximal degree in co-relation 78. Up to 5 conditions per place. [2019-12-18 19:44:51,267 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 72 places, 92 transitions [2019-12-18 19:44:51,289 INFO L126 PetriNetUnfolder]: 24/91 cut-off events. [2019-12-18 19:44:51,290 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:44:51,294 INFO L76 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 91 events. 24/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 162 event pairs. 3/68 useless extension candidates. Maximal degree in co-relation 78. Up to 5 conditions per place. [2019-12-18 19:44:51,300 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2992 [2019-12-18 19:44:51,301 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 19:44:52,200 INFO L206 etLargeBlockEncoding]: Checked pairs total: 10306 [2019-12-18 19:44:52,200 INFO L214 etLargeBlockEncoding]: Total number of compositions: 40 [2019-12-18 19:44:52,204 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 53 transitions [2019-12-18 19:44:52,225 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 326 states. [2019-12-18 19:44:52,228 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states. [2019-12-18 19:44:52,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 19:44:52,234 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:44:52,235 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 19:44:52,236 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:44:52,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:44:52,242 INFO L82 PathProgramCache]: Analyzing trace with hash 12205615, now seen corresponding path program 1 times [2019-12-18 19:44:52,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:44:52,251 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675745534] [2019-12-18 19:44:52,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:44:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:44:52,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:44:52,390 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675745534] [2019-12-18 19:44:52,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:44:52,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 19:44:52,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638982873] [2019-12-18 19:44:52,397 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-18 19:44:52,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:44:52,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-18 19:44:52,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-18 19:44:52,417 INFO L87 Difference]: Start difference. First operand 326 states. Second operand 2 states. [2019-12-18 19:44:52,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:44:52,458 INFO L93 Difference]: Finished difference Result 326 states and 830 transitions. [2019-12-18 19:44:52,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-18 19:44:52,459 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2019-12-18 19:44:52,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:44:52,477 INFO L225 Difference]: With dead ends: 326 [2019-12-18 19:44:52,478 INFO L226 Difference]: Without dead ends: 317 [2019-12-18 19:44:52,479 INFO L631 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 [2019-12-18 19:44:52,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2019-12-18 19:44:52,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2019-12-18 19:44:52,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2019-12-18 19:44:52,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 812 transitions. [2019-12-18 19:44:52,559 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 812 transitions. Word has length 4 [2019-12-18 19:44:52,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:44:52,560 INFO L462 AbstractCegarLoop]: Abstraction has 317 states and 812 transitions. [2019-12-18 19:44:52,560 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-18 19:44:52,560 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 812 transitions. [2019-12-18 19:44:52,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 19:44:52,561 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:44:52,561 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:44:52,562 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:44:52,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:44:52,562 INFO L82 PathProgramCache]: Analyzing trace with hash -295132035, now seen corresponding path program 1 times [2019-12-18 19:44:52,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:44:52,563 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436038062] [2019-12-18 19:44:52,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:44:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:44:52,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:44:52,634 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436038062] [2019-12-18 19:44:52,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:44:52,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 19:44:52,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355741522] [2019-12-18 19:44:52,637 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:44:52,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:44:52,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:44:52,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:44:52,638 INFO L87 Difference]: Start difference. First operand 317 states and 812 transitions. Second operand 3 states. [2019-12-18 19:44:52,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:44:52,686 INFO L93 Difference]: Finished difference Result 315 states and 792 transitions. [2019-12-18 19:44:52,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:44:52,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-18 19:44:52,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:44:52,691 INFO L225 Difference]: With dead ends: 315 [2019-12-18 19:44:52,691 INFO L226 Difference]: Without dead ends: 273 [2019-12-18 19:44:52,692 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:44:52,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2019-12-18 19:44:52,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 267. [2019-12-18 19:44:52,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2019-12-18 19:44:52,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 687 transitions. [2019-12-18 19:44:52,719 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 687 transitions. Word has length 10 [2019-12-18 19:44:52,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:44:52,720 INFO L462 AbstractCegarLoop]: Abstraction has 267 states and 687 transitions. [2019-12-18 19:44:52,720 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:44:52,720 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 687 transitions. [2019-12-18 19:44:52,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 19:44:52,721 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:44:52,721 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:44:52,722 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:44:52,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:44:52,723 INFO L82 PathProgramCache]: Analyzing trace with hash -819868373, now seen corresponding path program 1 times [2019-12-18 19:44:52,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:44:52,723 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920044806] [2019-12-18 19:44:52,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:44:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:44:52,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:44:52,826 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920044806] [2019-12-18 19:44:52,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:44:52,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 19:44:52,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690851463] [2019-12-18 19:44:52,828 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:44:52,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:44:52,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:44:52,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:44:52,829 INFO L87 Difference]: Start difference. First operand 267 states and 687 transitions. Second operand 3 states. [2019-12-18 19:44:52,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:44:52,852 INFO L93 Difference]: Finished difference Result 255 states and 652 transitions. [2019-12-18 19:44:52,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:44:52,853 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-18 19:44:52,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:44:52,855 INFO L225 Difference]: With dead ends: 255 [2019-12-18 19:44:52,856 INFO L226 Difference]: Without dead ends: 213 [2019-12-18 19:44:52,856 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:44:52,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2019-12-18 19:44:52,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2019-12-18 19:44:52,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2019-12-18 19:44:52,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 554 transitions. [2019-12-18 19:44:52,870 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 554 transitions. Word has length 10 [2019-12-18 19:44:52,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:44:52,870 INFO L462 AbstractCegarLoop]: Abstraction has 213 states and 554 transitions. [2019-12-18 19:44:52,871 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:44:52,871 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 554 transitions. [2019-12-18 19:44:52,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-18 19:44:52,873 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:44:52,874 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:44:52,874 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:44:52,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:44:52,875 INFO L82 PathProgramCache]: Analyzing trace with hash 839349889, now seen corresponding path program 1 times [2019-12-18 19:44:52,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:44:52,875 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311564339] [2019-12-18 19:44:52,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:44:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:44:52,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:44:52,931 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311564339] [2019-12-18 19:44:52,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:44:52,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:44:52,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316335203] [2019-12-18 19:44:52,932 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:44:52,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:44:52,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:44:52,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:44:52,934 INFO L87 Difference]: Start difference. First operand 213 states and 554 transitions. Second operand 3 states. [2019-12-18 19:44:53,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:44:53,012 INFO L93 Difference]: Finished difference Result 311 states and 780 transitions. [2019-12-18 19:44:53,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:44:53,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-12-18 19:44:53,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:44:53,015 INFO L225 Difference]: With dead ends: 311 [2019-12-18 19:44:53,015 INFO L226 Difference]: Without dead ends: 238 [2019-12-18 19:44:53,016 INFO L631 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 [2019-12-18 19:44:53,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2019-12-18 19:44:53,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 225. [2019-12-18 19:44:53,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2019-12-18 19:44:53,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 560 transitions. [2019-12-18 19:44:53,033 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 560 transitions. Word has length 17 [2019-12-18 19:44:53,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:44:53,038 INFO L462 AbstractCegarLoop]: Abstraction has 225 states and 560 transitions. [2019-12-18 19:44:53,038 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:44:53,039 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 560 transitions. [2019-12-18 19:44:53,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-18 19:44:53,047 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:44:53,047 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:44:53,047 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:44:53,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:44:53,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1816049141, now seen corresponding path program 2 times [2019-12-18 19:44:53,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:44:53,049 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249217366] [2019-12-18 19:44:53,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:44:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:44:53,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:44:53,113 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249217366] [2019-12-18 19:44:53,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:44:53,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-18 19:44:53,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913087439] [2019-12-18 19:44:53,115 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 19:44:53,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:44:53,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 19:44:53,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:44:53,115 INFO L87 Difference]: Start difference. First operand 225 states and 560 transitions. Second operand 4 states. [2019-12-18 19:44:53,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:44:53,147 INFO L93 Difference]: Finished difference Result 361 states and 855 transitions. [2019-12-18 19:44:53,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:44:53,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-12-18 19:44:53,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:44:53,150 INFO L225 Difference]: With dead ends: 361 [2019-12-18 19:44:53,150 INFO L226 Difference]: Without dead ends: 358 [2019-12-18 19:44:53,151 INFO L631 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 [2019-12-18 19:44:53,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2019-12-18 19:44:53,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 269. [2019-12-18 19:44:53,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2019-12-18 19:44:53,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 662 transitions. [2019-12-18 19:44:53,176 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 662 transitions. Word has length 17 [2019-12-18 19:44:53,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:44:53,177 INFO L462 AbstractCegarLoop]: Abstraction has 269 states and 662 transitions. [2019-12-18 19:44:53,177 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 19:44:53,177 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 662 transitions. [2019-12-18 19:44:53,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-18 19:44:53,178 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:44:53,178 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:44:53,179 INFO L410 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:44:53,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:44:53,179 INFO L82 PathProgramCache]: Analyzing trace with hash 360564935, now seen corresponding path program 1 times [2019-12-18 19:44:53,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:44:53,180 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181767010] [2019-12-18 19:44:53,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:44:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:44:53,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:44:53,221 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181767010] [2019-12-18 19:44:53,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:44:53,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:44:53,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393319740] [2019-12-18 19:44:53,223 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:44:53,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:44:53,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:44:53,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:44:53,225 INFO L87 Difference]: Start difference. First operand 269 states and 662 transitions. Second operand 3 states. [2019-12-18 19:44:53,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:44:53,274 INFO L93 Difference]: Finished difference Result 223 states and 471 transitions. [2019-12-18 19:44:53,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:44:53,274 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-12-18 19:44:53,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:44:53,276 INFO L225 Difference]: With dead ends: 223 [2019-12-18 19:44:53,276 INFO L226 Difference]: Without dead ends: 152 [2019-12-18 19:44:53,276 INFO L631 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 [2019-12-18 19:44:53,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-12-18 19:44:53,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 126. [2019-12-18 19:44:53,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-12-18 19:44:53,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 245 transitions. [2019-12-18 19:44:53,281 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 245 transitions. Word has length 17 [2019-12-18 19:44:53,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:44:53,281 INFO L462 AbstractCegarLoop]: Abstraction has 126 states and 245 transitions. [2019-12-18 19:44:53,281 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:44:53,282 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 245 transitions. [2019-12-18 19:44:53,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-18 19:44:53,282 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:44:53,282 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:44:53,283 INFO L410 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:44:53,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:44:53,283 INFO L82 PathProgramCache]: Analyzing trace with hash 685760811, now seen corresponding path program 2 times [2019-12-18 19:44:53,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:44:53,283 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987846943] [2019-12-18 19:44:53,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:44:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:44:53,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:44:53,309 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987846943] [2019-12-18 19:44:53,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:44:53,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:44:53,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029574671] [2019-12-18 19:44:53,310 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:44:53,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:44:53,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:44:53,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:44:53,311 INFO L87 Difference]: Start difference. First operand 126 states and 245 transitions. Second operand 3 states. [2019-12-18 19:44:53,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:44:53,328 INFO L93 Difference]: Finished difference Result 178 states and 338 transitions. [2019-12-18 19:44:53,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:44:53,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-12-18 19:44:53,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:44:53,329 INFO L225 Difference]: With dead ends: 178 [2019-12-18 19:44:53,330 INFO L226 Difference]: Without dead ends: 175 [2019-12-18 19:44:53,330 INFO L631 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 [2019-12-18 19:44:53,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2019-12-18 19:44:53,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 120. [2019-12-18 19:44:53,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-12-18 19:44:53,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 228 transitions. [2019-12-18 19:44:53,337 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 228 transitions. Word has length 17 [2019-12-18 19:44:53,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:44:53,338 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 228 transitions. [2019-12-18 19:44:53,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:44:53,338 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 228 transitions. [2019-12-18 19:44:53,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-18 19:44:53,338 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:44:53,339 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:44:53,339 INFO L410 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:44:53,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:44:53,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1792170110, now seen corresponding path program 1 times [2019-12-18 19:44:53,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:44:53,340 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868099444] [2019-12-18 19:44:53,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:44:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:44:53,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:44:53,411 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868099444] [2019-12-18 19:44:53,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:44:53,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:44:53,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462945250] [2019-12-18 19:44:53,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:44:53,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:44:53,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:44:53,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:44:53,414 INFO L87 Difference]: Start difference. First operand 120 states and 228 transitions. Second operand 3 states. [2019-12-18 19:44:53,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:44:53,428 INFO L93 Difference]: Finished difference Result 112 states and 212 transitions. [2019-12-18 19:44:53,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:44:53,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-12-18 19:44:53,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:44:53,429 INFO L225 Difference]: With dead ends: 112 [2019-12-18 19:44:53,430 INFO L226 Difference]: Without dead ends: 90 [2019-12-18 19:44:53,430 INFO L631 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 [2019-12-18 19:44:53,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2019-12-18 19:44:53,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2019-12-18 19:44:53,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-12-18 19:44:53,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 171 transitions. [2019-12-18 19:44:53,434 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 171 transitions. Word has length 20 [2019-12-18 19:44:53,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:44:53,434 INFO L462 AbstractCegarLoop]: Abstraction has 90 states and 171 transitions. [2019-12-18 19:44:53,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:44:53,434 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 171 transitions. [2019-12-18 19:44:53,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-18 19:44:53,435 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:44:53,435 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:44:53,436 INFO L410 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:44:53,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:44:53,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1787104108, now seen corresponding path program 1 times [2019-12-18 19:44:53,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:44:53,437 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694456278] [2019-12-18 19:44:53,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:44:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:44:53,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:44:53,489 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694456278] [2019-12-18 19:44:53,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:44:53,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:44:53,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247453727] [2019-12-18 19:44:53,490 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:44:53,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:44:53,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:44:53,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:44:53,491 INFO L87 Difference]: Start difference. First operand 90 states and 171 transitions. Second operand 3 states. [2019-12-18 19:44:53,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:44:53,496 INFO L93 Difference]: Finished difference Result 63 states and 131 transitions. [2019-12-18 19:44:53,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:44:53,496 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-12-18 19:44:53,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:44:53,497 INFO L225 Difference]: With dead ends: 63 [2019-12-18 19:44:53,497 INFO L226 Difference]: Without dead ends: 0 [2019-12-18 19:44:53,497 INFO L631 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 [2019-12-18 19:44:53,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-18 19:44:53,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-18 19:44:53,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-18 19:44:53,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-18 19:44:53,498 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-12-18 19:44:53,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:44:53,498 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-18 19:44:53,499 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:44:53,499 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-18 19:44:53,499 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-18 19:44:53,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 07:44:53 BasicIcfg [2019-12-18 19:44:53,503 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 19:44:53,506 INFO L168 Benchmark]: Toolchain (without parser) took 3731.28 ms. Allocated memory was 137.4 MB in the beginning and 251.1 MB in the end (delta: 113.8 MB). Free memory was 101.0 MB in the beginning and 181.0 MB in the end (delta: -80.0 MB). Peak memory consumption was 33.7 MB. Max. memory is 7.1 GB. [2019-12-18 19:44:53,506 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-12-18 19:44:53,507 INFO L168 Benchmark]: CACSL2BoogieTranslator took 733.47 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 100.5 MB in the beginning and 159.1 MB in the end (delta: -58.5 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2019-12-18 19:44:53,508 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.40 ms. Allocated memory is still 201.3 MB. Free memory was 159.1 MB in the beginning and 157.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-12-18 19:44:53,509 INFO L168 Benchmark]: Boogie Preprocessor took 28.96 ms. Allocated memory is still 201.3 MB. Free memory was 157.0 MB in the beginning and 155.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-12-18 19:44:53,510 INFO L168 Benchmark]: RCFGBuilder took 477.98 ms. Allocated memory is still 201.3 MB. Free memory was 155.6 MB in the beginning and 133.1 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2019-12-18 19:44:53,511 INFO L168 Benchmark]: TraceAbstraction took 2428.22 ms. Allocated memory was 201.3 MB in the beginning and 251.1 MB in the end (delta: 49.8 MB). Free memory was 132.4 MB in the beginning and 181.0 MB in the end (delta: -48.6 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2019-12-18 19:44:53,515 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 733.47 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 100.5 MB in the beginning and 159.1 MB in the end (delta: -58.5 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.40 ms. Allocated memory is still 201.3 MB. Free memory was 159.1 MB in the beginning and 157.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.96 ms. Allocated memory is still 201.3 MB. Free memory was 157.0 MB in the beginning and 155.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 477.98 ms. Allocated memory is still 201.3 MB. Free memory was 155.6 MB in the beginning and 133.1 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2428.22 ms. Allocated memory was 201.3 MB in the beginning and 251.1 MB in the end (delta: 49.8 MB). Free memory was 132.4 MB in the beginning and 181.0 MB in the end (delta: -48.6 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.9s, 72 ProgramPointsBefore, 39 ProgramPointsAfterwards, 92 TransitionsBefore, 53 TransitionsAfterwards, 2992 CoEnabledTransitionPairs, 6 FixpointIterations, 11 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 1160 VarBasedMoverChecksPositive, 48 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 10306 CheckedPairsTotal, 40 TotalNumberOfCompositions - PositiveResult [Line: 698]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 724]: 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, 69 locations, 2 error locations. Result: SAFE, OverallTime: 2.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 486 SDtfs, 194 SDslu, 262 SDs, 0 SdLazy, 93 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=326occurred 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 189 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 123 ConstructedInterpolants, 0 QuantifiedInterpolants, 3385 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...