/usr/bin/java -Xmx16000000000 -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-ext/20_lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 13:41:35,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 13:41:35,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 13:41:35,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 13:41:35,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 13:41:35,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 13:41:35,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 13:41:35,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 13:41:35,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 13:41:35,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 13:41:35,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 13:41:35,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 13:41:35,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 13:41:35,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 13:41:35,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 13:41:35,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 13:41:35,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 13:41:35,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 13:41:35,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 13:41:35,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 13:41:35,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 13:41:35,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 13:41:35,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 13:41:35,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 13:41:35,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-11 13:41:35,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 13:41:35,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 13:41:35,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 13:41:35,851 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-11 13:41:35,888 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 13:41:35,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 13:41:35,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 13:41:35,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 13:41:35,890 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 13:41:35,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 13:41:35,891 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 13:41:35,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 13:41:35,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 13:41:35,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 13:41:35,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 13:41:35,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 13:41:35,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 13:41:35,893 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 13:41:35,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 13:41:35,893 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 13:41:35,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 13:41:35,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 13:41:35,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 13:41:35,894 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 13:41:35,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 13:41:35,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 13:41:35,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 13:41:35,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 13:41:35,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 13:41:35,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 13:41:35,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 13:41:35,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-11 13:41:35,896 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-11 13:41:35,896 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 13:41:36,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 13:41:36,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 13:41:36,230 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 13:41:36,232 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 13:41:36,232 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 13:41:36,233 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-10-11 13:41:36,305 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ccc08af0/b67271d93877474ca5aa0e6ca0eee694/FLAGcfbb48c91 [2020-10-11 13:41:36,791 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 13:41:36,792 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-10-11 13:41:36,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ccc08af0/b67271d93877474ca5aa0e6ca0eee694/FLAGcfbb48c91 [2020-10-11 13:41:37,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ccc08af0/b67271d93877474ca5aa0e6ca0eee694 [2020-10-11 13:41:37,113 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 13:41:37,115 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 13:41:37,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 13:41:37,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 13:41:37,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 13:41:37,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:41:37" (1/1) ... [2020-10-11 13:41:37,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a7c3a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:41:37, skipping insertion in model container [2020-10-11 13:41:37,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:41:37" (1/1) ... [2020-10-11 13:41:37,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 13:41:37,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 13:41:37,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 13:41:37,677 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 13:41:37,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 13:41:37,843 INFO L208 MainTranslator]: Completed translation [2020-10-11 13:41:37,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:41:37 WrapperNode [2020-10-11 13:41:37,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 13:41:37,845 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 13:41:37,846 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 13:41:37,846 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 13:41:37,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:41:37" (1/1) ... [2020-10-11 13:41:37,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:41:37" (1/1) ... [2020-10-11 13:41:37,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 13:41:37,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 13:41:37,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 13:41:37,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 13:41:37,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:41:37" (1/1) ... [2020-10-11 13:41:37,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:41:37" (1/1) ... [2020-10-11 13:41:37,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:41:37" (1/1) ... [2020-10-11 13:41:37,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:41:37" (1/1) ... [2020-10-11 13:41:37,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:41:37" (1/1) ... [2020-10-11 13:41:37,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:41:37" (1/1) ... [2020-10-11 13:41:37,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:41:37" (1/1) ... [2020-10-11 13:41:37,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 13:41:37,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 13:41:37,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 13:41:37,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 13:41:37,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:41:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 13:41:38,056 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-11 13:41:38,056 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-11 13:41:38,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 13:41:38,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 13:41:38,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 13:41:38,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 13:41:38,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 13:41:38,059 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 13:41:38,401 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 13:41:38,401 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-11 13:41:38,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:41:38 BoogieIcfgContainer [2020-10-11 13:41:38,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 13:41:38,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 13:41:38,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 13:41:38,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 13:41:38,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 01:41:37" (1/3) ... [2020-10-11 13:41:38,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f17077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:41:38, skipping insertion in model container [2020-10-11 13:41:38,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:41:37" (2/3) ... [2020-10-11 13:41:38,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f17077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:41:38, skipping insertion in model container [2020-10-11 13:41:38,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:41:38" (3/3) ... [2020-10-11 13:41:38,411 INFO L111 eAbstractionObserver]: Analyzing ICFG 20_lamport.i [2020-10-11 13:41:38,422 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-11 13:41:38,422 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 13:41:38,430 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-11 13:41:38,431 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 13:41:38,464 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:38,465 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:38,465 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:38,465 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:38,466 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:38,466 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:38,470 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:38,470 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:38,470 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:38,471 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:38,488 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 13:41:38,508 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 13:41:38,509 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 13:41:38,509 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 13:41:38,509 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 13:41:38,509 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 13:41:38,509 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 13:41:38,510 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 13:41:38,510 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 13:41:38,523 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 13:41:38,525 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 92 transitions, 189 flow [2020-10-11 13:41:38,528 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 92 transitions, 189 flow [2020-10-11 13:41:38,530 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 92 transitions, 189 flow [2020-10-11 13:41:38,576 INFO L129 PetriNetUnfolder]: 24/91 cut-off events. [2020-10-11 13:41:38,577 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 13:41:38,584 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 91 events. 24/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 162 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 78. Up to 5 conditions per place. [2020-10-11 13:41:38,589 INFO L117 LiptonReduction]: Number of co-enabled transitions 2992 [2020-10-11 13:41:39,650 INFO L132 LiptonReduction]: Checked pairs total: 7520 [2020-10-11 13:41:39,650 INFO L134 LiptonReduction]: Total number of compositions: 54 [2020-10-11 13:41:39,657 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 51 transitions, 107 flow [2020-10-11 13:41:39,680 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 291 states. [2020-10-11 13:41:39,682 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states. [2020-10-11 13:41:39,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-11 13:41:39,688 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:41:39,689 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-11 13:41:39,690 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:41:39,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:41:39,695 INFO L82 PathProgramCache]: Analyzing trace with hash 12384667, now seen corresponding path program 1 times [2020-10-11 13:41:39,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:41:39,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683234914] [2020-10-11 13:41:39,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:41:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:41:39,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:41:39,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683234914] [2020-10-11 13:41:39,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:41:39,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 13:41:39,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562507784] [2020-10-11 13:41:39,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-11 13:41:39,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:41:39,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-11 13:41:39,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-11 13:41:39,870 INFO L87 Difference]: Start difference. First operand 291 states. Second operand 2 states. [2020-10-11 13:41:39,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:41:39,899 INFO L93 Difference]: Finished difference Result 291 states and 750 transitions. [2020-10-11 13:41:39,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-11 13:41:39,900 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-10-11 13:41:39,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:41:39,916 INFO L225 Difference]: With dead ends: 291 [2020-10-11 13:41:39,917 INFO L226 Difference]: Without dead ends: 282 [2020-10-11 13:41:39,918 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-11 13:41:39,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-11 13:41:39,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-10-11 13:41:39,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-11 13:41:40,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 732 transitions. [2020-10-11 13:41:40,005 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 732 transitions. Word has length 4 [2020-10-11 13:41:40,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:41:40,005 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 732 transitions. [2020-10-11 13:41:40,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-11 13:41:40,005 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 732 transitions. [2020-10-11 13:41:40,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 13:41:40,008 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:41:40,008 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:41:40,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 13:41:40,009 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:41:40,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:41:40,010 INFO L82 PathProgramCache]: Analyzing trace with hash 27980612, now seen corresponding path program 1 times [2020-10-11 13:41:40,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:41:40,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956447395] [2020-10-11 13:41:40,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:41:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:41:40,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:41:40,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956447395] [2020-10-11 13:41:40,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:41:40,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 13:41:40,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155028624] [2020-10-11 13:41:40,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:41:40,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:41:40,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:41:40,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:41:40,077 INFO L87 Difference]: Start difference. First operand 282 states and 732 transitions. Second operand 3 states. [2020-10-11 13:41:40,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:41:40,113 INFO L93 Difference]: Finished difference Result 281 states and 714 transitions. [2020-10-11 13:41:40,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:41:40,113 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-11 13:41:40,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:41:40,117 INFO L225 Difference]: With dead ends: 281 [2020-10-11 13:41:40,117 INFO L226 Difference]: Without dead ends: 242 [2020-10-11 13:41:40,118 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:41:40,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-11 13:41:40,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 236. [2020-10-11 13:41:40,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-11 13:41:40,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 615 transitions. [2020-10-11 13:41:40,140 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 615 transitions. Word has length 9 [2020-10-11 13:41:40,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:41:40,141 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 615 transitions. [2020-10-11 13:41:40,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:41:40,141 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 615 transitions. [2020-10-11 13:41:40,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 13:41:40,142 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:41:40,142 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:41:40,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 13:41:40,143 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:41:40,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:41:40,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1037274544, now seen corresponding path program 1 times [2020-10-11 13:41:40,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:41:40,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254689132] [2020-10-11 13:41:40,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:41:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:41:40,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:41:40,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254689132] [2020-10-11 13:41:40,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:41:40,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 13:41:40,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102865031] [2020-10-11 13:41:40,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:41:40,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:41:40,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:41:40,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:41:40,198 INFO L87 Difference]: Start difference. First operand 236 states and 615 transitions. Second operand 3 states. [2020-10-11 13:41:40,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:41:40,218 INFO L93 Difference]: Finished difference Result 225 states and 582 transitions. [2020-10-11 13:41:40,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:41:40,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-11 13:41:40,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:41:40,221 INFO L225 Difference]: With dead ends: 225 [2020-10-11 13:41:40,221 INFO L226 Difference]: Without dead ends: 186 [2020-10-11 13:41:40,221 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:41:40,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-11 13:41:40,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-10-11 13:41:40,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-11 13:41:40,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 490 transitions. [2020-10-11 13:41:40,234 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 490 transitions. Word has length 9 [2020-10-11 13:41:40,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:41:40,235 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 490 transitions. [2020-10-11 13:41:40,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:41:40,235 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 490 transitions. [2020-10-11 13:41:40,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 13:41:40,237 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:41:40,237 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:41:40,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 13:41:40,238 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:41:40,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:41:40,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1540220195, now seen corresponding path program 1 times [2020-10-11 13:41:40,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:41:40,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371488643] [2020-10-11 13:41:40,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:41:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:41:40,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:41:40,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371488643] [2020-10-11 13:41:40,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:41:40,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:41:40,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591323277] [2020-10-11 13:41:40,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:41:40,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:41:40,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:41:40,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:41:40,286 INFO L87 Difference]: Start difference. First operand 186 states and 490 transitions. Second operand 3 states. [2020-10-11 13:41:40,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:41:40,310 INFO L93 Difference]: Finished difference Result 308 states and 768 transitions. [2020-10-11 13:41:40,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:41:40,311 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-11 13:41:40,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:41:40,314 INFO L225 Difference]: With dead ends: 308 [2020-10-11 13:41:40,314 INFO L226 Difference]: Without dead ends: 306 [2020-10-11 13:41:40,314 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:41:40,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-11 13:41:40,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 229. [2020-10-11 13:41:40,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-11 13:41:40,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 602 transitions. [2020-10-11 13:41:40,327 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 602 transitions. Word has length 15 [2020-10-11 13:41:40,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:41:40,328 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 602 transitions. [2020-10-11 13:41:40,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:41:40,328 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 602 transitions. [2020-10-11 13:41:40,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 13:41:40,330 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:41:40,330 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:41:40,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 13:41:40,331 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:41:40,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:41:40,331 INFO L82 PathProgramCache]: Analyzing trace with hash 988190489, now seen corresponding path program 1 times [2020-10-11 13:41:40,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:41:40,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773031500] [2020-10-11 13:41:40,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:41:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:41:40,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:41:40,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773031500] [2020-10-11 13:41:40,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:41:40,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:41:40,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48037647] [2020-10-11 13:41:40,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:41:40,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:41:40,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:41:40,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:41:40,366 INFO L87 Difference]: Start difference. First operand 229 states and 602 transitions. Second operand 3 states. [2020-10-11 13:41:40,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:41:40,418 INFO L93 Difference]: Finished difference Result 312 states and 770 transitions. [2020-10-11 13:41:40,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:41:40,419 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-11 13:41:40,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:41:40,421 INFO L225 Difference]: With dead ends: 312 [2020-10-11 13:41:40,421 INFO L226 Difference]: Without dead ends: 237 [2020-10-11 13:41:40,422 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:41:40,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-11 13:41:40,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 216. [2020-10-11 13:41:40,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-11 13:41:40,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 534 transitions. [2020-10-11 13:41:40,431 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 534 transitions. Word has length 15 [2020-10-11 13:41:40,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:41:40,431 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 534 transitions. [2020-10-11 13:41:40,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:41:40,431 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 534 transitions. [2020-10-11 13:41:40,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 13:41:40,433 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:41:40,433 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:41:40,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 13:41:40,434 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:41:40,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:41:40,434 INFO L82 PathProgramCache]: Analyzing trace with hash -795157281, now seen corresponding path program 2 times [2020-10-11 13:41:40,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:41:40,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821120501] [2020-10-11 13:41:40,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:41:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:41:40,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:41:40,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821120501] [2020-10-11 13:41:40,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:41:40,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:41:40,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695232475] [2020-10-11 13:41:40,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:41:40,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:41:40,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:41:40,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:41:40,467 INFO L87 Difference]: Start difference. First operand 216 states and 534 transitions. Second operand 3 states. [2020-10-11 13:41:40,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:41:40,483 INFO L93 Difference]: Finished difference Result 293 states and 674 transitions. [2020-10-11 13:41:40,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:41:40,484 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-11 13:41:40,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:41:40,486 INFO L225 Difference]: With dead ends: 293 [2020-10-11 13:41:40,486 INFO L226 Difference]: Without dead ends: 293 [2020-10-11 13:41:40,487 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:41:40,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-11 13:41:40,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 216. [2020-10-11 13:41:40,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-11 13:41:40,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 522 transitions. [2020-10-11 13:41:40,496 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 522 transitions. Word has length 15 [2020-10-11 13:41:40,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:41:40,497 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 522 transitions. [2020-10-11 13:41:40,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:41:40,497 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 522 transitions. [2020-10-11 13:41:40,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 13:41:40,499 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:41:40,499 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:41:40,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 13:41:40,499 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:41:40,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:41:40,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1884700835, now seen corresponding path program 2 times [2020-10-11 13:41:40,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:41:40,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679079622] [2020-10-11 13:41:40,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:41:40,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:41:40,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:41:40,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679079622] [2020-10-11 13:41:40,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:41:40,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:41:40,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760066557] [2020-10-11 13:41:40,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:41:40,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:41:40,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:41:40,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:41:40,529 INFO L87 Difference]: Start difference. First operand 216 states and 522 transitions. Second operand 3 states. [2020-10-11 13:41:40,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:41:40,569 INFO L93 Difference]: Finished difference Result 181 states and 375 transitions. [2020-10-11 13:41:40,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:41:40,569 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-11 13:41:40,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:41:40,570 INFO L225 Difference]: With dead ends: 181 [2020-10-11 13:41:40,571 INFO L226 Difference]: Without dead ends: 115 [2020-10-11 13:41:40,571 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:41:40,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-11 13:41:40,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 96. [2020-10-11 13:41:40,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-11 13:41:40,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 190 transitions. [2020-10-11 13:41:40,575 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 190 transitions. Word has length 15 [2020-10-11 13:41:40,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:41:40,576 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 190 transitions. [2020-10-11 13:41:40,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:41:40,576 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 190 transitions. [2020-10-11 13:41:40,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-11 13:41:40,577 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:41:40,577 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:41:40,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 13:41:40,578 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:41:40,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:41:40,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1567500834, now seen corresponding path program 1 times [2020-10-11 13:41:40,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:41:40,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140110768] [2020-10-11 13:41:40,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:41:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:41:40,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:41:40,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140110768] [2020-10-11 13:41:40,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:41:40,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:41:40,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839975971] [2020-10-11 13:41:40,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:41:40,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:41:40,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:41:40,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:41:40,613 INFO L87 Difference]: Start difference. First operand 96 states and 190 transitions. Second operand 3 states. [2020-10-11 13:41:40,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:41:40,627 INFO L93 Difference]: Finished difference Result 98 states and 191 transitions. [2020-10-11 13:41:40,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:41:40,628 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-11 13:41:40,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:41:40,629 INFO L225 Difference]: With dead ends: 98 [2020-10-11 13:41:40,629 INFO L226 Difference]: Without dead ends: 81 [2020-10-11 13:41:40,629 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:41:40,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-11 13:41:40,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-11 13:41:40,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-11 13:41:40,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 159 transitions. [2020-10-11 13:41:40,633 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 159 transitions. Word has length 17 [2020-10-11 13:41:40,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:41:40,644 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 159 transitions. [2020-10-11 13:41:40,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:41:40,645 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 159 transitions. [2020-10-11 13:41:40,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-11 13:41:40,645 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:41:40,646 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:41:40,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 13:41:40,646 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:41:40,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:41:40,646 INFO L82 PathProgramCache]: Analyzing trace with hash 322655978, now seen corresponding path program 1 times [2020-10-11 13:41:40,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:41:40,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422176633] [2020-10-11 13:41:40,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:41:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:41:40,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:41:40,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422176633] [2020-10-11 13:41:40,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:41:40,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:41:40,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621453171] [2020-10-11 13:41:40,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:41:40,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:41:40,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:41:40,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:41:40,681 INFO L87 Difference]: Start difference. First operand 81 states and 159 transitions. Second operand 3 states. [2020-10-11 13:41:40,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:41:40,686 INFO L93 Difference]: Finished difference Result 56 states and 119 transitions. [2020-10-11 13:41:40,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:41:40,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-11 13:41:40,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:41:40,687 INFO L225 Difference]: With dead ends: 56 [2020-10-11 13:41:40,687 INFO L226 Difference]: Without dead ends: 0 [2020-10-11 13:41:40,688 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:41:40,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-11 13:41:40,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-11 13:41:40,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-11 13:41:40,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-11 13:41:40,689 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-11 13:41:40,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:41:40,689 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-11 13:41:40,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:41:40,690 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-11 13:41:40,690 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-11 13:41:40,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 13:41:40,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 01:41:40 BasicIcfg [2020-10-11 13:41:40,694 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 13:41:40,696 INFO L168 Benchmark]: Toolchain (without parser) took 3580.83 ms. Allocated memory was 250.6 MB in the beginning and 364.9 MB in the end (delta: 114.3 MB). Free memory was 203.7 MB in the beginning and 324.9 MB in the end (delta: -121.2 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 13:41:40,697 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 250.6 MB. Free memory is still 224.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 13:41:40,698 INFO L168 Benchmark]: CACSL2BoogieTranslator took 728.38 ms. Allocated memory was 250.6 MB in the beginning and 307.8 MB in the end (delta: 57.1 MB). Free memory was 203.7 MB in the beginning and 265.7 MB in the end (delta: -62.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 14.2 GB. [2020-10-11 13:41:40,698 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.61 ms. Allocated memory is still 307.8 MB. Free memory was 265.7 MB in the beginning and 263.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 13:41:40,699 INFO L168 Benchmark]: Boogie Preprocessor took 60.66 ms. Allocated memory is still 307.8 MB. Free memory was 263.2 MB in the beginning and 260.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 13:41:40,700 INFO L168 Benchmark]: RCFGBuilder took 422.83 ms. Allocated memory is still 307.8 MB. Free memory was 260.6 MB in the beginning and 238.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-11 13:41:40,701 INFO L168 Benchmark]: TraceAbstraction took 2289.81 ms. Allocated memory was 307.8 MB in the beginning and 364.9 MB in the end (delta: 57.1 MB). Free memory was 238.8 MB in the beginning and 324.9 MB in the end (delta: -86.1 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 13:41:40,704 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 250.6 MB. Free memory is still 224.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 728.38 ms. Allocated memory was 250.6 MB in the beginning and 307.8 MB in the end (delta: 57.1 MB). Free memory was 203.7 MB in the beginning and 265.7 MB in the end (delta: -62.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 73.61 ms. Allocated memory is still 307.8 MB. Free memory was 265.7 MB in the beginning and 263.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 60.66 ms. Allocated memory is still 307.8 MB. Free memory was 263.2 MB in the beginning and 260.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 422.83 ms. Allocated memory is still 307.8 MB. Free memory was 260.6 MB in the beginning and 238.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2289.81 ms. Allocated memory was 307.8 MB in the beginning and 364.9 MB in the end (delta: 57.1 MB). Free memory was 238.8 MB in the beginning and 324.9 MB in the end (delta: -86.1 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1508 VarBasedMoverChecksPositive, 102 VarBasedMoverChecksNegative, 41 SemBasedMoverChecksPositive, 61 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 395 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.1s, 72 PlacesBefore, 39 PlacesAfterwards, 92 TransitionsBefore, 51 TransitionsAfterwards, 2992 CoEnabledTransitionPairs, 4 FixpointIterations, 11 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 54 TotalNumberOfCompositions, 7520 MoverChecksTotal - PositiveResult [Line: 698]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 724]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 69 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.1s, HoareTripleCheckerStatistics: 474 SDtfs, 189 SDslu, 211 SDs, 0 SdLazy, 96 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=291occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 200 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 2461 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...