/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-ext/16_peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 19:44:34,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 19:44:34,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 19:44:34,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 19:44:34,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 19:44:34,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 19:44:34,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 19:44:34,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 19:44:34,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 19:44:34,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 19:44:34,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 19:44:34,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 19:44:34,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 19:44:34,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 19:44:34,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 19:44:34,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 19:44:34,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 19:44:34,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 19:44:34,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 19:44:34,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 19:44:34,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 19:44:34,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 19:44:34,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 19:44:34,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 19:44:34,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-18 19:44:34,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 19:44:34,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 19:44:34,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 19:44:34,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 19:44:34,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 19:44:34,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 19:44:34,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 19:44:34,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 19:44:34,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 19:44:34,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 19:44:34,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 19:44:34,823 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 19:44:34,850 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 19:44:34,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 19:44:34,854 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 19:44:34,855 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 19:44:34,855 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 19:44:34,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 19:44:34,856 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 19:44:34,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 19:44:34,856 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 19:44:34,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 19:44:34,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 19:44:34,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 19:44:34,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 19:44:34,858 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 19:44:34,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 19:44:34,859 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 19:44:34,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 19:44:34,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 19:44:34,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 19:44:34,861 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 19:44:34,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 19:44:34,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 19:44:34,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 19:44:34,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 19:44:34,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 19:44:34,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 19:44:34,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 19:44:34,865 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-18 19:44:34,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 19:44:34,866 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 19:44:35,136 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 19:44:35,149 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 19:44:35,153 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 19:44:35,155 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 19:44:35,155 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 19:44:35,156 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/16_peterson.i [2019-12-18 19:44:35,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86a0083e9/411d6933e73f43fb8a4ad2d64e2042a0/FLAG72d74f069 [2019-12-18 19:44:35,737 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 19:44:35,741 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/16_peterson.i [2019-12-18 19:44:35,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86a0083e9/411d6933e73f43fb8a4ad2d64e2042a0/FLAG72d74f069 [2019-12-18 19:44:36,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86a0083e9/411d6933e73f43fb8a4ad2d64e2042a0 [2019-12-18 19:44:36,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 19:44:36,065 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 19:44:36,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 19:44:36,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 19:44:36,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 19:44:36,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:44:36" (1/1) ... [2019-12-18 19:44:36,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11713e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:36, skipping insertion in model container [2019-12-18 19:44:36,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:44:36" (1/1) ... [2019-12-18 19:44:36,084 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 19:44:36,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 19:44:36,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 19:44:36,671 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 19:44:36,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 19:44:36,810 INFO L208 MainTranslator]: Completed translation [2019-12-18 19:44:36,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:36 WrapperNode [2019-12-18 19:44:36,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 19:44:36,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 19:44:36,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 19:44:36,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 19:44:36,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:36" (1/1) ... [2019-12-18 19:44:36,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:36" (1/1) ... [2019-12-18 19:44:36,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 19:44:36,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 19:44:36,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 19:44:36,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 19:44:36,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:36" (1/1) ... [2019-12-18 19:44:36,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:36" (1/1) ... [2019-12-18 19:44:36,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:36" (1/1) ... [2019-12-18 19:44:36,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:36" (1/1) ... [2019-12-18 19:44:36,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:36" (1/1) ... [2019-12-18 19:44:36,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:36" (1/1) ... [2019-12-18 19:44:36,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:36" (1/1) ... [2019-12-18 19:44:36,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 19:44:36,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 19:44:36,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 19:44:36,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 19:44:36,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:36" (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 19:44:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-12-18 19:44:36,972 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-12-18 19:44:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 19:44:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 19:44:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 19:44:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 19:44:36,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 19:44:36,975 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 19:44:37,314 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 19:44:37,314 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-12-18 19:44:37,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:44:37 BoogieIcfgContainer [2019-12-18 19:44:37,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 19:44:37,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 19:44:37,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 19:44:37,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 19:44:37,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 07:44:36" (1/3) ... [2019-12-18 19:44:37,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a55b599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:44:37, skipping insertion in model container [2019-12-18 19:44:37,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:44:36" (2/3) ... [2019-12-18 19:44:37,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a55b599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:44:37, skipping insertion in model container [2019-12-18 19:44:37,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:44:37" (3/3) ... [2019-12-18 19:44:37,327 INFO L109 eAbstractionObserver]: Analyzing ICFG 16_peterson.i [2019-12-18 19:44:37,338 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 19:44:37,339 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 19:44:37,344 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-12-18 19:44:37,345 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 19:44:37,368 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:37,369 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:37,369 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:37,370 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:37,370 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:37,371 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:37,375 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:37,375 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:37,375 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:37,376 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:37,394 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-18 19:44:37,414 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 19:44:37,415 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 19:44:37,415 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 19:44:37,415 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 19:44:37,415 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 19:44:37,415 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 19:44:37,415 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 19:44:37,416 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 19:44:37,430 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 51 transitions [2019-12-18 19:44:37,432 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions [2019-12-18 19:44:37,466 INFO L126 PetriNetUnfolder]: 6/50 cut-off events. [2019-12-18 19:44:37,466 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:44:37,474 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. 3/45 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2019-12-18 19:44:37,478 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions [2019-12-18 19:44:37,498 INFO L126 PetriNetUnfolder]: 6/50 cut-off events. [2019-12-18 19:44:37,498 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:44:37,500 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. 3/45 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2019-12-18 19:44:37,502 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2019-12-18 19:44:37,504 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 19:44:38,250 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2019-12-18 19:44:38,308 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1316 [2019-12-18 19:44:38,308 INFO L214 etLargeBlockEncoding]: Total number of compositions: 33 [2019-12-18 19:44:38,312 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 24 transitions [2019-12-18 19:44:38,328 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 82 states. [2019-12-18 19:44:38,331 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2019-12-18 19:44:38,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-18 19:44:38,340 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:44:38,341 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-18 19:44:38,341 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:44:38,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:44:38,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1885576326, now seen corresponding path program 1 times [2019-12-18 19:44:38,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:44:38,359 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926771186] [2019-12-18 19:44:38,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:44:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:44:38,546 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 19:44:38,547 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926771186] [2019-12-18 19:44:38,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:44:38,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 19:44:38,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681605201] [2019-12-18 19:44:38,553 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-18 19:44:38,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:44:38,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-18 19:44:38,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-18 19:44:38,567 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 2 states. [2019-12-18 19:44:38,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:44:38,581 INFO L93 Difference]: Finished difference Result 82 states and 162 transitions. [2019-12-18 19:44:38,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-18 19:44:38,582 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-12-18 19:44:38,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:44:38,593 INFO L225 Difference]: With dead ends: 82 [2019-12-18 19:44:38,594 INFO L226 Difference]: Without dead ends: 74 [2019-12-18 19:44:38,595 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 19:44:38,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-12-18 19:44:38,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2019-12-18 19:44:38,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-12-18 19:44:38,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 146 transitions. [2019-12-18 19:44:38,641 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 146 transitions. Word has length 6 [2019-12-18 19:44:38,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:44:38,641 INFO L462 AbstractCegarLoop]: Abstraction has 74 states and 146 transitions. [2019-12-18 19:44:38,642 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-18 19:44:38,642 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 146 transitions. [2019-12-18 19:44:38,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-18 19:44:38,643 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:44:38,643 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:44:38,643 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:44:38,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:44:38,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1676688844, now seen corresponding path program 1 times [2019-12-18 19:44:38,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:44:38,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133821921] [2019-12-18 19:44:38,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:44:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:44:38,706 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 19:44:38,707 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133821921] [2019-12-18 19:44:38,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:44:38,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 19:44:38,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810688812] [2019-12-18 19:44:38,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:44:38,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:44:38,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:44:38,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:44:38,711 INFO L87 Difference]: Start difference. First operand 74 states and 146 transitions. Second operand 3 states. [2019-12-18 19:44:38,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:44:38,740 INFO L93 Difference]: Finished difference Result 80 states and 147 transitions. [2019-12-18 19:44:38,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:44:38,740 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-12-18 19:44:38,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:44:38,742 INFO L225 Difference]: With dead ends: 80 [2019-12-18 19:44:38,742 INFO L226 Difference]: Without dead ends: 60 [2019-12-18 19:44:38,743 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 19:44:38,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-12-18 19:44:38,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2019-12-18 19:44:38,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-12-18 19:44:38,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 104 transitions. [2019-12-18 19:44:38,753 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 104 transitions. Word has length 7 [2019-12-18 19:44:38,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:44:38,753 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 104 transitions. [2019-12-18 19:44:38,753 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:44:38,754 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 104 transitions. [2019-12-18 19:44:38,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-18 19:44:38,754 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:44:38,755 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:44:38,755 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:44:38,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:44:38,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1662154578, now seen corresponding path program 1 times [2019-12-18 19:44:38,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:44:38,756 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153677335] [2019-12-18 19:44:38,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:44:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:44:38,812 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 19:44:38,812 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153677335] [2019-12-18 19:44:38,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:44:38,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 19:44:38,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073884223] [2019-12-18 19:44:38,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:44:38,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:44:38,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:44:38,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:44:38,814 INFO L87 Difference]: Start difference. First operand 56 states and 104 transitions. Second operand 3 states. [2019-12-18 19:44:38,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:44:38,851 INFO L93 Difference]: Finished difference Result 50 states and 88 transitions. [2019-12-18 19:44:38,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:44:38,853 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-12-18 19:44:38,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:44:38,855 INFO L225 Difference]: With dead ends: 50 [2019-12-18 19:44:38,856 INFO L226 Difference]: Without dead ends: 40 [2019-12-18 19:44:38,856 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 19:44:38,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-12-18 19:44:38,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-12-18 19:44:38,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-18 19:44:38,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 69 transitions. [2019-12-18 19:44:38,866 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 69 transitions. Word has length 7 [2019-12-18 19:44:38,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:44:38,868 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 69 transitions. [2019-12-18 19:44:38,868 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:44:38,868 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 69 transitions. [2019-12-18 19:44:38,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 19:44:38,869 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:44:38,869 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:44:38,870 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:44:38,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:44:38,870 INFO L82 PathProgramCache]: Analyzing trace with hash -371931096, now seen corresponding path program 1 times [2019-12-18 19:44:38,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:44:38,872 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263672039] [2019-12-18 19:44:38,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:44:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:44:38,959 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 19:44:38,960 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263672039] [2019-12-18 19:44:38,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:44:38,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-18 19:44:38,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261227025] [2019-12-18 19:44:38,961 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 19:44:38,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:44:38,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 19:44:38,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:44:38,962 INFO L87 Difference]: Start difference. First operand 40 states and 69 transitions. Second operand 4 states. [2019-12-18 19:44:38,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:44:38,988 INFO L93 Difference]: Finished difference Result 45 states and 78 transitions. [2019-12-18 19:44:38,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 19:44:38,988 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 19:44:38,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:44:38,989 INFO L225 Difference]: With dead ends: 45 [2019-12-18 19:44:38,989 INFO L226 Difference]: Without dead ends: 36 [2019-12-18 19:44:38,990 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 19:44:38,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-18 19:44:38,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-18 19:44:38,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-18 19:44:38,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2019-12-18 19:44:38,994 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 11 [2019-12-18 19:44:38,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:44:38,995 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2019-12-18 19:44:38,995 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 19:44:38,995 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2019-12-18 19:44:38,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 19:44:38,996 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:44:38,996 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:44:38,996 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:44:38,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:44:38,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1549117656, now seen corresponding path program 2 times [2019-12-18 19:44:38,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:44:38,997 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205040754] [2019-12-18 19:44:38,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:44:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:44:39,045 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 19:44:39,045 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205040754] [2019-12-18 19:44:39,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:44:39,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-18 19:44:39,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287425814] [2019-12-18 19:44:39,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 19:44:39,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:44:39,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 19:44:39,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:44:39,047 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2019-12-18 19:44:39,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:44:39,058 INFO L93 Difference]: Finished difference Result 17 states and 29 transitions. [2019-12-18 19:44:39,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 19:44:39,058 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 19:44:39,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:44:39,059 INFO L225 Difference]: With dead ends: 17 [2019-12-18 19:44:39,059 INFO L226 Difference]: Without dead ends: 0 [2019-12-18 19:44:39,059 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 19:44:39,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-18 19:44:39,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-18 19:44:39,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-18 19:44:39,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-18 19:44:39,060 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-18 19:44:39,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:44:39,060 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-18 19:44:39,060 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 19:44:39,061 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-18 19:44:39,061 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-18 19:44:39,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 07:44:39 BasicIcfg [2019-12-18 19:44:39,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 19:44:39,067 INFO L168 Benchmark]: Toolchain (without parser) took 3002.58 ms. Allocated memory was 146.3 MB in the beginning and 233.8 MB in the end (delta: 87.6 MB). Free memory was 101.2 MB in the beginning and 120.4 MB in the end (delta: -19.2 MB). Peak memory consumption was 68.4 MB. Max. memory is 7.1 GB. [2019-12-18 19:44:39,068 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-12-18 19:44:39,069 INFO L168 Benchmark]: CACSL2BoogieTranslator took 746.49 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 100.8 MB in the beginning and 163.9 MB in the end (delta: -63.1 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2019-12-18 19:44:39,070 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.54 ms. Allocated memory is still 205.0 MB. Free memory was 163.9 MB in the beginning and 161.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-18 19:44:39,071 INFO L168 Benchmark]: Boogie Preprocessor took 27.83 ms. Allocated memory is still 205.0 MB. Free memory was 161.9 MB in the beginning and 160.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-18 19:44:39,071 INFO L168 Benchmark]: RCFGBuilder took 407.23 ms. Allocated memory is still 205.0 MB. Free memory was 160.6 MB in the beginning and 142.6 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2019-12-18 19:44:39,072 INFO L168 Benchmark]: TraceAbstraction took 1748.09 ms. Allocated memory was 205.0 MB in the beginning and 233.8 MB in the end (delta: 28.8 MB). Free memory was 141.9 MB in the beginning and 120.4 MB in the end (delta: 21.5 MB). Peak memory consumption was 50.3 MB. Max. memory is 7.1 GB. [2019-12-18 19:44:39,076 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 146.3 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 746.49 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 100.8 MB in the beginning and 163.9 MB in the end (delta: -63.1 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 67.54 ms. Allocated memory is still 205.0 MB. Free memory was 163.9 MB in the beginning and 161.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.83 ms. Allocated memory is still 205.0 MB. Free memory was 161.9 MB in the beginning and 160.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 407.23 ms. Allocated memory is still 205.0 MB. Free memory was 160.6 MB in the beginning and 142.6 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1748.09 ms. Allocated memory was 205.0 MB in the beginning and 233.8 MB in the end (delta: 28.8 MB). Free memory was 141.9 MB in the beginning and 120.4 MB in the end (delta: 21.5 MB). Peak memory consumption was 50.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 49 ProgramPointsBefore, 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, 47 SDslu, 35 SDs, 0 SdLazy, 35 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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...