/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-MCR.epf -i ../../../trunk/examples/svcomp/pthread-ext/16_peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 19:26:13,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 19:26:13,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 19:26:13,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 19:26:13,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 19:26:13,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 19:26:13,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 19:26:13,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 19:26:13,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 19:26:13,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 19:26:13,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 19:26:13,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 19:26:13,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 19:26:13,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 19:26:13,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 19:26:13,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 19:26:13,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 19:26:13,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 19:26:13,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 19:26:13,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 19:26:13,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 19:26:13,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 19:26:13,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 19:26:13,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 19:26:13,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-27 19:26:13,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 19:26:13,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 19:26:13,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 19:26:13,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 19:26:13,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 19:26:13,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 19:26:13,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 19:26:13,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 19:26:13,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 19:26:13,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 19:26:13,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 19:26:13,617 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-MCR.epf [2019-12-27 19:26:13,630 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 19:26:13,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 19:26:13,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 19:26:13,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 19:26:13,632 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 19:26:13,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 19:26:13,633 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 19:26:13,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 19:26:13,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 19:26:13,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 19:26:13,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 19:26:13,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 19:26:13,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 19:26:13,634 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 19:26:13,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 19:26:13,634 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 19:26:13,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 19:26:13,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 19:26:13,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 19:26:13,635 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 19:26:13,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 19:26:13,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 19:26:13,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 19:26:13,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 19:26:13,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 19:26:13,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 19:26:13,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 19:26:13,636 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2019-12-27 19:26:13,637 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-27 19:26:13,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 19:26:13,637 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2019-12-27 19:26:13,637 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 19:26:13,907 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 19:26:13,927 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 19:26:13,932 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 19:26:13,933 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 19:26:13,935 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 19:26:13,936 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/16_peterson.i [2019-12-27 19:26:14,008 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e4edf2ac/451cda6684b846ab9bdc3a7dbed1cafd/FLAG18b22337f [2019-12-27 19:26:14,597 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 19:26:14,598 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/16_peterson.i [2019-12-27 19:26:14,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e4edf2ac/451cda6684b846ab9bdc3a7dbed1cafd/FLAG18b22337f [2019-12-27 19:26:14,909 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e4edf2ac/451cda6684b846ab9bdc3a7dbed1cafd [2019-12-27 19:26:14,920 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 19:26:14,922 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 19:26:14,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 19:26:14,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 19:26:14,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 19:26:14,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 07:26:14" (1/1) ... [2019-12-27 19:26:14,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@346c3085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:26:14, skipping insertion in model container [2019-12-27 19:26:14,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 07:26:14" (1/1) ... [2019-12-27 19:26:14,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 19:26:14,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 19:26:15,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 19:26:15,414 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 19:26:15,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 19:26:15,537 INFO L208 MainTranslator]: Completed translation [2019-12-27 19:26:15,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:26:15 WrapperNode [2019-12-27 19:26:15,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 19:26:15,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 19:26:15,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 19:26:15,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 19:26:15,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:26:15" (1/1) ... [2019-12-27 19:26:15,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:26:15" (1/1) ... [2019-12-27 19:26:15,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 19:26:15,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 19:26:15,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 19:26:15,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 19:26:15,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:26:15" (1/1) ... [2019-12-27 19:26:15,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:26:15" (1/1) ... [2019-12-27 19:26:15,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:26:15" (1/1) ... [2019-12-27 19:26:15,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:26:15" (1/1) ... [2019-12-27 19:26:15,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:26:15" (1/1) ... [2019-12-27 19:26:15,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:26:15" (1/1) ... [2019-12-27 19:26:15,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:26:15" (1/1) ... [2019-12-27 19:26:15,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 19:26:15,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 19:26:15,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 19:26:15,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 19:26:15,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:26:15" (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 [2019-12-27 19:26:15,669 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-12-27 19:26:15,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-12-27 19:26:15,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 19:26:15,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 19:26:15,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 19:26:15,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 19:26:15,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 19:26:15,672 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-27 19:26:15,990 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 19:26:15,990 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-12-27 19:26:15,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 07:26:15 BoogieIcfgContainer [2019-12-27 19:26:15,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 19:26:15,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 19:26:15,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 19:26:15,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 19:26:15,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 07:26:14" (1/3) ... [2019-12-27 19:26:15,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c800e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 07:26:15, skipping insertion in model container [2019-12-27 19:26:15,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:26:15" (2/3) ... [2019-12-27 19:26:15,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c800e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 07:26:15, skipping insertion in model container [2019-12-27 19:26:15,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 07:26:15" (3/3) ... [2019-12-27 19:26:16,000 INFO L109 eAbstractionObserver]: Analyzing ICFG 16_peterson.i [2019-12-27 19:26:16,010 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 19:26:16,011 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 19:26:16,017 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-12-27 19:26:16,018 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 19:26:16,042 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:26:16,043 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:26:16,043 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:26:16,043 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:26:16,044 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:26:16,044 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:26:16,049 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:26:16,049 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:26:16,049 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:26:16,050 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:26:16,067 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-27 19:26:16,087 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 19:26:16,087 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 19:26:16,087 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 19:26:16,087 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 19:26:16,087 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 19:26:16,087 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 19:26:16,088 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 19:26:16,088 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 19:26:16,101 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 51 transitions [2019-12-27 19:26:16,103 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions [2019-12-27 19:26:16,139 INFO L132 PetriNetUnfolder]: 6/50 cut-off events. [2019-12-27 19:26:16,139 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 19:26:16,147 INFO L76 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. 0/42 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2019-12-27 19:26:16,151 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions [2019-12-27 19:26:16,168 INFO L132 PetriNetUnfolder]: 6/50 cut-off events. [2019-12-27 19:26:16,168 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 19:26:16,170 INFO L76 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. 0/42 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2019-12-27 19:26:16,172 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2019-12-27 19:26:16,173 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 19:26:16,881 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1316 [2019-12-27 19:26:16,882 INFO L214 etLargeBlockEncoding]: Total number of compositions: 33 [2019-12-27 19:26:16,886 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 24 transitions [2019-12-27 19:26:16,905 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 82 states. [2019-12-27 19:26:16,907 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2019-12-27 19:26:16,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-27 19:26:16,921 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:26:16,922 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-27 19:26:16,923 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:26:16,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:26:16,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1885576326, now seen corresponding path program 1 times [2019-12-27 19:26:16,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:26:16,946 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232539469] [2019-12-27 19:26:16,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:26:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:26:17,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 19:26:17,146 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232539469] [2019-12-27 19:26:17,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:26:17,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 19:26:17,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1520415566] [2019-12-27 19:26:17,149 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:26:17,154 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:26:17,166 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 7 states and 6 transitions. [2019-12-27 19:26:17,166 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:26:17,169 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 19:26:17,169 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-27 19:26:17,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:26:17,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-27 19:26:17,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-27 19:26:17,186 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 2 states. [2019-12-27 19:26:17,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:26:17,195 INFO L93 Difference]: Finished difference Result 82 states and 162 transitions. [2019-12-27 19:26:17,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-27 19:26:17,197 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-12-27 19:26:17,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:26:17,217 INFO L225 Difference]: With dead ends: 82 [2019-12-27 19:26:17,218 INFO L226 Difference]: Without dead ends: 74 [2019-12-27 19:26:17,219 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 [2019-12-27 19:26:17,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-12-27 19:26:17,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2019-12-27 19:26:17,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-12-27 19:26:17,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 146 transitions. [2019-12-27 19:26:17,259 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 146 transitions. Word has length 6 [2019-12-27 19:26:17,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:26:17,260 INFO L462 AbstractCegarLoop]: Abstraction has 74 states and 146 transitions. [2019-12-27 19:26:17,260 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-27 19:26:17,260 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 146 transitions. [2019-12-27 19:26:17,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-27 19:26:17,261 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:26:17,261 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-27 19:26:17,261 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:26:17,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:26:17,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1676688844, now seen corresponding path program 1 times [2019-12-27 19:26:17,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:26:17,262 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148353253] [2019-12-27 19:26:17,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:26:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:26:17,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 19:26:17,326 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148353253] [2019-12-27 19:26:17,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:26:17,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 19:26:17,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2077384047] [2019-12-27 19:26:17,328 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:26:17,328 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:26:17,329 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 8 states and 7 transitions. [2019-12-27 19:26:17,329 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:26:17,332 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 19:26:17,333 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 19:26:17,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:26:17,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 19:26:17,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 19:26:17,335 INFO L87 Difference]: Start difference. First operand 74 states and 146 transitions. Second operand 3 states. [2019-12-27 19:26:17,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:26:17,372 INFO L93 Difference]: Finished difference Result 80 states and 147 transitions. [2019-12-27 19:26:17,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 19:26:17,373 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-12-27 19:26:17,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:26:17,374 INFO L225 Difference]: With dead ends: 80 [2019-12-27 19:26:17,376 INFO L226 Difference]: Without dead ends: 60 [2019-12-27 19:26:17,377 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 [2019-12-27 19:26:17,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-12-27 19:26:17,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2019-12-27 19:26:17,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-12-27 19:26:17,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 104 transitions. [2019-12-27 19:26:17,398 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 104 transitions. Word has length 7 [2019-12-27 19:26:17,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:26:17,398 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 104 transitions. [2019-12-27 19:26:17,398 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 19:26:17,398 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 104 transitions. [2019-12-27 19:26:17,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-27 19:26:17,399 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:26:17,400 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-27 19:26:17,400 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:26:17,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:26:17,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1662154578, now seen corresponding path program 1 times [2019-12-27 19:26:17,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:26:17,403 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757320604] [2019-12-27 19:26:17,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:26:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:26:17,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 19:26:17,493 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757320604] [2019-12-27 19:26:17,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:26:17,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 19:26:17,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [11326870] [2019-12-27 19:26:17,494 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:26:17,495 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:26:17,495 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 8 states and 7 transitions. [2019-12-27 19:26:17,496 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:26:17,496 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 19:26:17,496 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 19:26:17,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:26:17,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 19:26:17,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 19:26:17,497 INFO L87 Difference]: Start difference. First operand 56 states and 104 transitions. Second operand 3 states. [2019-12-27 19:26:17,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:26:17,513 INFO L93 Difference]: Finished difference Result 50 states and 88 transitions. [2019-12-27 19:26:17,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 19:26:17,513 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-12-27 19:26:17,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:26:17,514 INFO L225 Difference]: With dead ends: 50 [2019-12-27 19:26:17,514 INFO L226 Difference]: Without dead ends: 40 [2019-12-27 19:26:17,515 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 [2019-12-27 19:26:17,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-12-27 19:26:17,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-12-27 19:26:17,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-27 19:26:17,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 69 transitions. [2019-12-27 19:26:17,520 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 69 transitions. Word has length 7 [2019-12-27 19:26:17,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:26:17,520 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 69 transitions. [2019-12-27 19:26:17,520 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 19:26:17,521 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 69 transitions. [2019-12-27 19:26:17,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 19:26:17,521 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:26:17,521 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 19:26:17,522 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:26:17,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:26:17,522 INFO L82 PathProgramCache]: Analyzing trace with hash -371931096, now seen corresponding path program 1 times [2019-12-27 19:26:17,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:26:17,523 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216173111] [2019-12-27 19:26:17,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:26:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:26:17,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 19:26:17,561 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216173111] [2019-12-27 19:26:17,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:26:17,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-27 19:26:17,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2096354352] [2019-12-27 19:26:17,562 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:26:17,563 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:26:17,565 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 23 states and 30 transitions. [2019-12-27 19:26:17,565 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:26:17,602 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 4 times. [2019-12-27 19:26:17,602 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-27 19:26:17,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:26:17,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-27 19:26:17,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-27 19:26:17,603 INFO L87 Difference]: Start difference. First operand 40 states and 69 transitions. Second operand 7 states. [2019-12-27 19:26:17,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:26:17,650 INFO L93 Difference]: Finished difference Result 44 states and 75 transitions. [2019-12-27 19:26:17,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-27 19:26:17,652 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-12-27 19:26:17,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:26:17,653 INFO L225 Difference]: With dead ends: 44 [2019-12-27 19:26:17,654 INFO L226 Difference]: Without dead ends: 35 [2019-12-27 19:26:17,654 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-27 19:26:17,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-12-27 19:26:17,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-12-27 19:26:17,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-12-27 19:26:17,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 53 transitions. [2019-12-27 19:26:17,659 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 53 transitions. Word has length 11 [2019-12-27 19:26:17,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:26:17,659 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 53 transitions. [2019-12-27 19:26:17,659 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-27 19:26:17,659 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 53 transitions. [2019-12-27 19:26:17,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 19:26:17,660 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:26:17,660 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 19:26:17,660 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:26:17,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:26:17,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1549117656, now seen corresponding path program 2 times [2019-12-27 19:26:17,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:26:17,661 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300596209] [2019-12-27 19:26:17,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:26:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:26:17,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 19:26:17,728 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300596209] [2019-12-27 19:26:17,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:26:17,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-27 19:26:17,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1800634321] [2019-12-27 19:26:17,729 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:26:17,730 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:26:17,732 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 22 states and 27 transitions. [2019-12-27 19:26:17,732 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:26:17,732 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 19:26:17,733 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 19:26:17,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:26:17,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 19:26:17,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 19:26:17,733 INFO L87 Difference]: Start difference. First operand 35 states and 53 transitions. Second operand 4 states. [2019-12-27 19:26:17,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:26:17,748 INFO L93 Difference]: Finished difference Result 16 states and 26 transitions. [2019-12-27 19:26:17,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 19:26:17,748 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-27 19:26:17,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:26:17,749 INFO L225 Difference]: With dead ends: 16 [2019-12-27 19:26:17,749 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 19:26:17,749 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 [2019-12-27 19:26:17,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 19:26:17,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 19:26:17,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 19:26:17,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 19:26:17,751 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-27 19:26:17,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:26:17,751 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 19:26:17,751 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 19:26:17,751 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 19:26:17,751 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 19:26:17,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 07:26:17 BasicIcfg [2019-12-27 19:26:17,755 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 19:26:17,758 INFO L168 Benchmark]: Toolchain (without parser) took 2835.54 ms. Allocated memory was 144.7 MB in the beginning and 233.8 MB in the end (delta: 89.1 MB). Free memory was 101.2 MB in the beginning and 113.9 MB in the end (delta: -12.7 MB). Peak memory consumption was 76.5 MB. Max. memory is 7.1 GB. [2019-12-27 19:26:17,759 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-12-27 19:26:17,760 INFO L168 Benchmark]: CACSL2BoogieTranslator took 612.51 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 101.0 MB in the beginning and 161.9 MB in the end (delta: -60.8 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2019-12-27 19:26:17,761 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.96 ms. Allocated memory is still 201.9 MB. Free memory was 161.9 MB in the beginning and 159.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-12-27 19:26:17,762 INFO L168 Benchmark]: Boogie Preprocessor took 24.56 ms. Allocated memory is still 201.9 MB. Free memory was 159.7 MB in the beginning and 158.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-27 19:26:17,762 INFO L168 Benchmark]: RCFGBuilder took 382.46 ms. Allocated memory is still 201.9 MB. Free memory was 158.4 MB in the beginning and 140.4 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2019-12-27 19:26:17,763 INFO L168 Benchmark]: TraceAbstraction took 1762.65 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 139.8 MB in the beginning and 113.9 MB in the end (delta: 25.9 MB). Peak memory consumption was 57.9 MB. Max. memory is 7.1 GB. [2019-12-27 19:26:17,767 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 612.51 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 101.0 MB in the beginning and 161.9 MB in the end (delta: -60.8 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.96 ms. Allocated memory is still 201.9 MB. Free memory was 161.9 MB in the beginning and 159.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.56 ms. Allocated memory is still 201.9 MB. Free memory was 159.7 MB in the beginning and 158.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 382.46 ms. Allocated memory is still 201.9 MB. Free memory was 158.4 MB in the beginning and 140.4 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1762.65 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 139.8 MB in the beginning and 113.9 MB in the end (delta: 25.9 MB). Peak memory consumption was 57.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.7s, 49 ProgramPointsBefore, 21 ProgramPointsAfterwards, 51 TransitionsBefore, 24 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 5 FixpointIterations, 10 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 337 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1316 CheckedPairsTotal, 33 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. Result: SAFE, OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 52 SDslu, 56 SDs, 0 SdLazy, 51 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...