/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/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-ext/20_lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 03:52:05,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 03:52:05,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 03:52:05,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 03:52:05,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 03:52:05,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 03:52:05,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 03:52:05,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 03:52:05,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 03:52:05,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 03:52:05,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 03:52:05,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 03:52:05,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 03:52:05,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 03:52:05,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 03:52:05,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 03:52:05,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 03:52:05,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 03:52:05,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 03:52:05,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 03:52:05,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 03:52:05,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 03:52:05,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 03:52:05,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 03:52:05,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 03:52:05,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 03:52:05,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 03:52:05,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 03:52:05,654 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-PN-SemanticLbe-SemanticLooper.epf [2020-10-16 03:52:05,676 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 03:52:05,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 03:52:05,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 03:52:05,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 03:52:05,678 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 03:52:05,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 03:52:05,678 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 03:52:05,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 03:52:05,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 03:52:05,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 03:52:05,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 03:52:05,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 03:52:05,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 03:52:05,680 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 03:52:05,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 03:52:05,680 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 03:52:05,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 03:52:05,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 03:52:05,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 03:52:05,681 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 03:52:05,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 03:52:05,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 03:52:05,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 03:52:05,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 03:52:05,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 03:52:05,682 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 03:52:05,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 03:52:05,682 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 03:52:05,683 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 03:52:05,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 03:52:05,999 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 03:52:06,003 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 03:52:06,005 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 03:52:06,005 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 03:52:06,006 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-10-16 03:52:06,082 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78a905d86/2ae8bdbbf3a64cf898bb220c687ae74b/FLAG6888b5091 [2020-10-16 03:52:06,610 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 03:52:06,611 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-10-16 03:52:06,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78a905d86/2ae8bdbbf3a64cf898bb220c687ae74b/FLAG6888b5091 [2020-10-16 03:52:06,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78a905d86/2ae8bdbbf3a64cf898bb220c687ae74b [2020-10-16 03:52:06,895 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 03:52:06,897 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 03:52:06,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 03:52:06,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 03:52:06,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 03:52:06,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:52:06" (1/1) ... [2020-10-16 03:52:06,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a50daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:52:06, skipping insertion in model container [2020-10-16 03:52:06,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:52:06" (1/1) ... [2020-10-16 03:52:06,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 03:52:06,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 03:52:07,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 03:52:07,422 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 03:52:07,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 03:52:07,554 INFO L208 MainTranslator]: Completed translation [2020-10-16 03:52:07,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:52:07 WrapperNode [2020-10-16 03:52:07,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 03:52:07,556 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 03:52:07,556 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 03:52:07,556 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 03:52:07,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:52:07" (1/1) ... [2020-10-16 03:52:07,580 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:52:07" (1/1) ... [2020-10-16 03:52:07,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 03:52:07,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 03:52:07,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 03:52:07,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 03:52:07,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:52:07" (1/1) ... [2020-10-16 03:52:07,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:52:07" (1/1) ... [2020-10-16 03:52:07,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:52:07" (1/1) ... [2020-10-16 03:52:07,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:52:07" (1/1) ... [2020-10-16 03:52:07,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:52:07" (1/1) ... [2020-10-16 03:52:07,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:52:07" (1/1) ... [2020-10-16 03:52:07,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:52:07" (1/1) ... [2020-10-16 03:52:07,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 03:52:07,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 03:52:07,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 03:52:07,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 03:52:07,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:52:07" (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 [2020-10-16 03:52:07,708 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 03:52:07,709 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 03:52:07,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 03:52:07,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 03:52:07,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 03:52:07,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 03:52:07,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 03:52:07,711 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 03:52:08,018 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 03:52:08,019 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-16 03:52:08,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:52:08 BoogieIcfgContainer [2020-10-16 03:52:08,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 03:52:08,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 03:52:08,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 03:52:08,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 03:52:08,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:52:06" (1/3) ... [2020-10-16 03:52:08,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eba85a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:52:08, skipping insertion in model container [2020-10-16 03:52:08,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:52:07" (2/3) ... [2020-10-16 03:52:08,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eba85a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:52:08, skipping insertion in model container [2020-10-16 03:52:08,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:52:08" (3/3) ... [2020-10-16 03:52:08,032 INFO L111 eAbstractionObserver]: Analyzing ICFG 20_lamport.i [2020-10-16 03:52:08,046 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 03:52:08,054 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 03:52:08,055 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 03:52:08,083 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:52:08,083 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:52:08,083 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:52:08,084 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:52:08,085 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:52:08,086 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:52:08,093 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:52:08,093 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:52:08,094 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:52:08,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:52:08,123 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 03:52:08,142 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 03:52:08,142 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 03:52:08,142 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 03:52:08,142 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 03:52:08,142 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 03:52:08,143 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 03:52:08,143 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 03:52:08,143 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 03:52:08,162 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 92 transitions, 189 flow [2020-10-16 03:52:08,206 INFO L129 PetriNetUnfolder]: 24/91 cut-off events. [2020-10-16 03:52:08,207 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 03:52:08,214 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. [2020-10-16 03:52:08,214 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 92 transitions, 189 flow [2020-10-16 03:52:08,222 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 91 transitions, 185 flow [2020-10-16 03:52:08,226 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 03:52:08,228 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 91 transitions, 185 flow [2020-10-16 03:52:08,232 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 91 transitions, 185 flow [2020-10-16 03:52:08,232 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 71 places, 91 transitions, 185 flow [2020-10-16 03:52:08,267 INFO L129 PetriNetUnfolder]: 24/91 cut-off events. [2020-10-16 03:52:08,267 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 03:52:08,269 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 159 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. [2020-10-16 03:52:08,273 INFO L117 LiptonReduction]: Number of co-enabled transitions 2992 [2020-10-16 03:52:09,427 INFO L132 LiptonReduction]: Checked pairs total: 7564 [2020-10-16 03:52:09,428 INFO L134 LiptonReduction]: Total number of compositions: 54 [2020-10-16 03:52:09,432 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1209 [2020-10-16 03:52:09,439 INFO L129 PetriNetUnfolder]: 2/9 cut-off events. [2020-10-16 03:52:09,440 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 03:52:09,440 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:52:09,441 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 03:52:09,441 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:52:09,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:52:09,448 INFO L82 PathProgramCache]: Analyzing trace with hash 12384760, now seen corresponding path program 1 times [2020-10-16 03:52:09,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:52:09,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722996520] [2020-10-16 03:52:09,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:52:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:52:09,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:52:09,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722996520] [2020-10-16 03:52:09,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:52:09,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 03:52:09,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221917030] [2020-10-16 03:52:09,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 03:52:09,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:52:09,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 03:52:09,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 03:52:09,633 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 146 [2020-10-16 03:52:09,635 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 50 transitions, 103 flow. Second operand 2 states. [2020-10-16 03:52:09,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:52:09,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 146 [2020-10-16 03:52:09,637 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:52:09,670 INFO L129 PetriNetUnfolder]: 12/46 cut-off events. [2020-10-16 03:52:09,670 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 03:52:09,671 INFO L80 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 46 events. 12/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 103 event pairs, 0 based on Foata normal form. 4/36 useless extension candidates. Maximal degree in co-relation 48. Up to 3 conditions per place. [2020-10-16 03:52:09,676 INFO L132 encePairwiseOnDemand]: 142/146 looper letters, 0 selfloop transitions, 0 changer transitions 0/46 dead transitions. [2020-10-16 03:52:09,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 46 transitions, 95 flow [2020-10-16 03:52:09,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 03:52:09,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-16 03:52:09,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 254 transitions. [2020-10-16 03:52:09,697 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8698630136986302 [2020-10-16 03:52:09,698 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 254 transitions. [2020-10-16 03:52:09,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 254 transitions. [2020-10-16 03:52:09,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:52:09,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 254 transitions. [2020-10-16 03:52:09,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-16 03:52:09,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-16 03:52:09,718 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-16 03:52:09,720 INFO L185 Difference]: Start difference. First operand has 38 places, 50 transitions, 103 flow. Second operand 2 states and 254 transitions. [2020-10-16 03:52:09,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 46 transitions, 95 flow [2020-10-16 03:52:09,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 46 transitions, 94 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 03:52:09,725 INFO L241 Difference]: Finished difference. Result has 38 places, 46 transitions, 94 flow [2020-10-16 03:52:09,728 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=94, PETRI_PLACES=38, PETRI_TRANSITIONS=46} [2020-10-16 03:52:09,729 INFO L342 CegarLoopForPetriNet]: 38 programPoint places, 0 predicate places. [2020-10-16 03:52:09,729 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 46 transitions, 94 flow [2020-10-16 03:52:09,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 03:52:09,729 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:52:09,729 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:52:09,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 03:52:09,730 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:52:09,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:52:09,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1604475641, now seen corresponding path program 1 times [2020-10-16 03:52:09,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:52:09,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104726893] [2020-10-16 03:52:09,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:52:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:52:09,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:52:09,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104726893] [2020-10-16 03:52:09,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:52:09,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 03:52:09,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107808813] [2020-10-16 03:52:09,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:52:09,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:52:09,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:52:09,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:52:09,797 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 146 [2020-10-16 03:52:09,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 46 transitions, 94 flow. Second operand 3 states. [2020-10-16 03:52:09,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:52:09,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 146 [2020-10-16 03:52:09,798 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:52:09,850 INFO L129 PetriNetUnfolder]: 19/77 cut-off events. [2020-10-16 03:52:09,850 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 03:52:09,851 INFO L80 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 77 events. 19/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 235 event pairs, 2 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 107. Up to 19 conditions per place. [2020-10-16 03:52:09,852 INFO L132 encePairwiseOnDemand]: 142/146 looper letters, 8 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2020-10-16 03:52:09,852 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 49 transitions, 120 flow [2020-10-16 03:52:09,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:52:09,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:52:09,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2020-10-16 03:52:09,856 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7808219178082192 [2020-10-16 03:52:09,856 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 342 transitions. [2020-10-16 03:52:09,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 342 transitions. [2020-10-16 03:52:09,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:52:09,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 342 transitions. [2020-10-16 03:52:09,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:52:09,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:52:09,860 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:52:09,860 INFO L185 Difference]: Start difference. First operand has 38 places, 46 transitions, 94 flow. Second operand 3 states and 342 transitions. [2020-10-16 03:52:09,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 49 transitions, 120 flow [2020-10-16 03:52:09,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 49 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 03:52:09,863 INFO L241 Difference]: Finished difference. Result has 41 places, 47 transitions, 108 flow [2020-10-16 03:52:09,863 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=41, PETRI_TRANSITIONS=47} [2020-10-16 03:52:09,864 INFO L342 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2020-10-16 03:52:09,864 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 47 transitions, 108 flow [2020-10-16 03:52:09,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:52:09,864 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:52:09,864 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:52:09,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 03:52:09,865 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:52:09,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:52:09,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1037274544, now seen corresponding path program 1 times [2020-10-16 03:52:09,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:52:09,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526037115] [2020-10-16 03:52:09,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:52:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:52:09,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:52:09,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526037115] [2020-10-16 03:52:09,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:52:09,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 03:52:09,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176823582] [2020-10-16 03:52:09,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:52:09,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:52:09,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:52:09,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:52:09,919 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 146 [2020-10-16 03:52:09,920 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 47 transitions, 108 flow. Second operand 3 states. [2020-10-16 03:52:09,920 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:52:09,920 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 146 [2020-10-16 03:52:09,920 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:52:09,947 INFO L129 PetriNetUnfolder]: 14/66 cut-off events. [2020-10-16 03:52:09,948 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 03:52:09,948 INFO L80 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 66 events. 14/66 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 190 event pairs, 2 based on Foata normal form. 6/60 useless extension candidates. Maximal degree in co-relation 101. Up to 10 conditions per place. [2020-10-16 03:52:09,949 INFO L132 encePairwiseOnDemand]: 141/146 looper letters, 5 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2020-10-16 03:52:09,949 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 124 flow [2020-10-16 03:52:09,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:52:09,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:52:09,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2020-10-16 03:52:09,951 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.776255707762557 [2020-10-16 03:52:09,952 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2020-10-16 03:52:09,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2020-10-16 03:52:09,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:52:09,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2020-10-16 03:52:09,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:52:09,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:52:09,955 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:52:09,955 INFO L185 Difference]: Start difference. First operand has 41 places, 47 transitions, 108 flow. Second operand 3 states and 340 transitions. [2020-10-16 03:52:09,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 124 flow [2020-10-16 03:52:09,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 03:52:09,957 INFO L241 Difference]: Finished difference. Result has 43 places, 47 transitions, 119 flow [2020-10-16 03:52:09,958 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=43, PETRI_TRANSITIONS=47} [2020-10-16 03:52:09,958 INFO L342 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2020-10-16 03:52:09,958 INFO L481 AbstractCegarLoop]: Abstraction has has 43 places, 47 transitions, 119 flow [2020-10-16 03:52:09,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:52:09,958 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:52:09,958 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:52:09,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 03:52:09,959 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:52:09,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:52:09,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1508968096, now seen corresponding path program 1 times [2020-10-16 03:52:09,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:52:09,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122330957] [2020-10-16 03:52:09,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:52:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:52:10,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:52:10,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122330957] [2020-10-16 03:52:10,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:52:10,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 03:52:10,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115537575] [2020-10-16 03:52:10,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:52:10,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:52:10,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:52:10,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:52:10,012 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 146 [2020-10-16 03:52:10,012 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 47 transitions, 119 flow. Second operand 3 states. [2020-10-16 03:52:10,012 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:52:10,012 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 146 [2020-10-16 03:52:10,013 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:52:10,105 INFO L129 PetriNetUnfolder]: 201/425 cut-off events. [2020-10-16 03:52:10,105 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-10-16 03:52:10,107 INFO L80 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 425 events. 201/425 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2115 event pairs, 36 based on Foata normal form. 10/316 useless extension candidates. Maximal degree in co-relation 786. Up to 230 conditions per place. [2020-10-16 03:52:10,110 INFO L132 encePairwiseOnDemand]: 134/146 looper letters, 25 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2020-10-16 03:52:10,111 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 201 flow [2020-10-16 03:52:10,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:52:10,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:52:10,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 313 transitions. [2020-10-16 03:52:10,113 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7146118721461188 [2020-10-16 03:52:10,113 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 313 transitions. [2020-10-16 03:52:10,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 313 transitions. [2020-10-16 03:52:10,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:52:10,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 313 transitions. [2020-10-16 03:52:10,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:52:10,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:52:10,116 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:52:10,116 INFO L185 Difference]: Start difference. First operand has 43 places, 47 transitions, 119 flow. Second operand 3 states and 313 transitions. [2020-10-16 03:52:10,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 201 flow [2020-10-16 03:52:10,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 56 transitions, 195 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 03:52:10,119 INFO L241 Difference]: Finished difference. Result has 45 places, 52 transitions, 171 flow [2020-10-16 03:52:10,120 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=45, PETRI_TRANSITIONS=52} [2020-10-16 03:52:10,120 INFO L342 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2020-10-16 03:52:10,120 INFO L481 AbstractCegarLoop]: Abstraction has has 45 places, 52 transitions, 171 flow [2020-10-16 03:52:10,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:52:10,120 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:52:10,121 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:52:10,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 03:52:10,121 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:52:10,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:52:10,122 INFO L82 PathProgramCache]: Analyzing trace with hash -2075508730, now seen corresponding path program 2 times [2020-10-16 03:52:10,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:52:10,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173318156] [2020-10-16 03:52:10,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:52:10,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:52:10,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:52:10,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173318156] [2020-10-16 03:52:10,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:52:10,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 03:52:10,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909888263] [2020-10-16 03:52:10,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:52:10,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:52:10,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:52:10,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:52:10,157 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 146 [2020-10-16 03:52:10,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 52 transitions, 171 flow. Second operand 3 states. [2020-10-16 03:52:10,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:52:10,158 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 146 [2020-10-16 03:52:10,158 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:52:10,233 INFO L129 PetriNetUnfolder]: 204/566 cut-off events. [2020-10-16 03:52:10,234 INFO L130 PetriNetUnfolder]: For 128/130 co-relation queries the response was YES. [2020-10-16 03:52:10,236 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1069 conditions, 566 events. 204/566 cut-off events. For 128/130 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3411 event pairs, 21 based on Foata normal form. 7/502 useless extension candidates. Maximal degree in co-relation 1062. Up to 139 conditions per place. [2020-10-16 03:52:10,239 INFO L132 encePairwiseOnDemand]: 142/146 looper letters, 10 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2020-10-16 03:52:10,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 58 transitions, 217 flow [2020-10-16 03:52:10,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:52:10,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:52:10,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 343 transitions. [2020-10-16 03:52:10,242 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7831050228310502 [2020-10-16 03:52:10,243 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 343 transitions. [2020-10-16 03:52:10,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 343 transitions. [2020-10-16 03:52:10,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:52:10,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 343 transitions. [2020-10-16 03:52:10,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:52:10,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:52:10,246 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:52:10,246 INFO L185 Difference]: Start difference. First operand has 45 places, 52 transitions, 171 flow. Second operand 3 states and 343 transitions. [2020-10-16 03:52:10,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 58 transitions, 217 flow [2020-10-16 03:52:10,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 58 transitions, 201 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 03:52:10,270 INFO L241 Difference]: Finished difference. Result has 47 places, 56 transitions, 195 flow [2020-10-16 03:52:10,270 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=195, PETRI_PLACES=47, PETRI_TRANSITIONS=56} [2020-10-16 03:52:10,270 INFO L342 CegarLoopForPetriNet]: 38 programPoint places, 9 predicate places. [2020-10-16 03:52:10,270 INFO L481 AbstractCegarLoop]: Abstraction has has 47 places, 56 transitions, 195 flow [2020-10-16 03:52:10,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:52:10,271 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:52:10,271 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:52:10,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 03:52:10,272 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:52:10,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:52:10,272 INFO L82 PathProgramCache]: Analyzing trace with hash 970172182, now seen corresponding path program 3 times [2020-10-16 03:52:10,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:52:10,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869645054] [2020-10-16 03:52:10,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:52:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:52:10,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:52:10,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869645054] [2020-10-16 03:52:10,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:52:10,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 03:52:10,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436409365] [2020-10-16 03:52:10,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:52:10,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:52:10,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:52:10,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:52:10,345 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 146 [2020-10-16 03:52:10,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 56 transitions, 195 flow. Second operand 3 states. [2020-10-16 03:52:10,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:52:10,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 146 [2020-10-16 03:52:10,346 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:52:10,474 INFO L129 PetriNetUnfolder]: 271/681 cut-off events. [2020-10-16 03:52:10,474 INFO L130 PetriNetUnfolder]: For 204/249 co-relation queries the response was YES. [2020-10-16 03:52:10,477 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1496 conditions, 681 events. 271/681 cut-off events. For 204/249 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4382 event pairs, 42 based on Foata normal form. 36/626 useless extension candidates. Maximal degree in co-relation 1488. Up to 274 conditions per place. [2020-10-16 03:52:10,479 INFO L132 encePairwiseOnDemand]: 134/146 looper letters, 20 selfloop transitions, 10 changer transitions 11/67 dead transitions. [2020-10-16 03:52:10,479 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 67 transitions, 313 flow [2020-10-16 03:52:10,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:52:10,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:52:10,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2020-10-16 03:52:10,482 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7191780821917808 [2020-10-16 03:52:10,482 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2020-10-16 03:52:10,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2020-10-16 03:52:10,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:52:10,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2020-10-16 03:52:10,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:52:10,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:52:10,485 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:52:10,485 INFO L185 Difference]: Start difference. First operand has 47 places, 56 transitions, 195 flow. Second operand 3 states and 315 transitions. [2020-10-16 03:52:10,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 67 transitions, 313 flow [2020-10-16 03:52:10,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 67 transitions, 305 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 03:52:10,490 INFO L241 Difference]: Finished difference. Result has 49 places, 55 transitions, 237 flow [2020-10-16 03:52:10,490 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=49, PETRI_TRANSITIONS=55} [2020-10-16 03:52:10,490 INFO L342 CegarLoopForPetriNet]: 38 programPoint places, 11 predicate places. [2020-10-16 03:52:10,491 INFO L481 AbstractCegarLoop]: Abstraction has has 49 places, 55 transitions, 237 flow [2020-10-16 03:52:10,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:52:10,491 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:52:10,491 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:52:10,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 03:52:10,491 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:52:10,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:52:10,492 INFO L82 PathProgramCache]: Analyzing trace with hash -2126523714, now seen corresponding path program 4 times [2020-10-16 03:52:10,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:52:10,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771226834] [2020-10-16 03:52:10,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:52:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:52:10,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:52:10,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771226834] [2020-10-16 03:52:10,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:52:10,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 03:52:10,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379628751] [2020-10-16 03:52:10,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:52:10,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:52:10,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:52:10,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:52:10,520 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 146 [2020-10-16 03:52:10,521 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 55 transitions, 237 flow. Second operand 3 states. [2020-10-16 03:52:10,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:52:10,521 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 146 [2020-10-16 03:52:10,521 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:52:10,588 INFO L129 PetriNetUnfolder]: 111/427 cut-off events. [2020-10-16 03:52:10,588 INFO L130 PetriNetUnfolder]: For 272/294 co-relation queries the response was YES. [2020-10-16 03:52:10,590 INFO L80 FinitePrefix]: Finished finitePrefix Result has 936 conditions, 427 events. 111/427 cut-off events. For 272/294 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2894 event pairs, 16 based on Foata normal form. 18/408 useless extension candidates. Maximal degree in co-relation 927. Up to 100 conditions per place. [2020-10-16 03:52:10,592 INFO L132 encePairwiseOnDemand]: 142/146 looper letters, 11 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2020-10-16 03:52:10,592 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 56 transitions, 255 flow [2020-10-16 03:52:10,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:52:10,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:52:10,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2020-10-16 03:52:10,595 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7808219178082192 [2020-10-16 03:52:10,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 342 transitions. [2020-10-16 03:52:10,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 342 transitions. [2020-10-16 03:52:10,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:52:10,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 342 transitions. [2020-10-16 03:52:10,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:52:10,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:52:10,599 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:52:10,599 INFO L185 Difference]: Start difference. First operand has 49 places, 55 transitions, 237 flow. Second operand 3 states and 342 transitions. [2020-10-16 03:52:10,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 56 transitions, 255 flow [2020-10-16 03:52:10,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 56 transitions, 239 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 03:52:10,603 INFO L241 Difference]: Finished difference. Result has 51 places, 55 transitions, 227 flow [2020-10-16 03:52:10,604 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=51, PETRI_TRANSITIONS=55} [2020-10-16 03:52:10,604 INFO L342 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2020-10-16 03:52:10,604 INFO L481 AbstractCegarLoop]: Abstraction has has 51 places, 55 transitions, 227 flow [2020-10-16 03:52:10,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:52:10,604 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:52:10,605 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:52:10,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 03:52:10,605 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:52:10,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:52:10,605 INFO L82 PathProgramCache]: Analyzing trace with hash 255721695, now seen corresponding path program 1 times [2020-10-16 03:52:10,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:52:10,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606931585] [2020-10-16 03:52:10,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:52:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:52:10,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:52:10,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606931585] [2020-10-16 03:52:10,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:52:10,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 03:52:10,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061199288] [2020-10-16 03:52:10,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:52:10,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:52:10,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:52:10,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:52:10,635 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 146 [2020-10-16 03:52:10,635 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 55 transitions, 227 flow. Second operand 3 states. [2020-10-16 03:52:10,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:52:10,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 146 [2020-10-16 03:52:10,636 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:52:10,696 INFO L129 PetriNetUnfolder]: 123/416 cut-off events. [2020-10-16 03:52:10,697 INFO L130 PetriNetUnfolder]: For 173/193 co-relation queries the response was YES. [2020-10-16 03:52:10,698 INFO L80 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 416 events. 123/416 cut-off events. For 173/193 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2608 event pairs, 13 based on Foata normal form. 16/387 useless extension candidates. Maximal degree in co-relation 902. Up to 96 conditions per place. [2020-10-16 03:52:10,700 INFO L132 encePairwiseOnDemand]: 140/146 looper letters, 6 selfloop transitions, 4 changer transitions 1/57 dead transitions. [2020-10-16 03:52:10,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 251 flow [2020-10-16 03:52:10,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:52:10,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:52:10,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 336 transitions. [2020-10-16 03:52:10,702 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7671232876712328 [2020-10-16 03:52:10,702 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 336 transitions. [2020-10-16 03:52:10,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 336 transitions. [2020-10-16 03:52:10,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:52:10,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 336 transitions. [2020-10-16 03:52:10,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:52:10,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:52:10,705 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:52:10,706 INFO L185 Difference]: Start difference. First operand has 51 places, 55 transitions, 227 flow. Second operand 3 states and 336 transitions. [2020-10-16 03:52:10,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 251 flow [2020-10-16 03:52:10,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 245 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 03:52:10,709 INFO L241 Difference]: Finished difference. Result has 52 places, 55 transitions, 233 flow [2020-10-16 03:52:10,709 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=52, PETRI_TRANSITIONS=55} [2020-10-16 03:52:10,710 INFO L342 CegarLoopForPetriNet]: 38 programPoint places, 14 predicate places. [2020-10-16 03:52:10,710 INFO L481 AbstractCegarLoop]: Abstraction has has 52 places, 55 transitions, 233 flow [2020-10-16 03:52:10,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:52:10,710 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:52:10,710 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:52:10,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 03:52:10,711 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:52:10,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:52:10,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1760624692, now seen corresponding path program 1 times [2020-10-16 03:52:10,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:52:10,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504906047] [2020-10-16 03:52:10,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:52:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:52:10,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:52:10,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504906047] [2020-10-16 03:52:10,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:52:10,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 03:52:10,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698506292] [2020-10-16 03:52:10,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:52:10,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:52:10,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:52:10,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:52:10,744 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 146 [2020-10-16 03:52:10,745 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 55 transitions, 233 flow. Second operand 3 states. [2020-10-16 03:52:10,745 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:52:10,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 146 [2020-10-16 03:52:10,745 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:52:10,799 INFO L129 PetriNetUnfolder]: 102/375 cut-off events. [2020-10-16 03:52:10,799 INFO L130 PetriNetUnfolder]: For 117/131 co-relation queries the response was YES. [2020-10-16 03:52:10,801 INFO L80 FinitePrefix]: Finished finitePrefix Result has 857 conditions, 375 events. 102/375 cut-off events. For 117/131 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2227 event pairs, 12 based on Foata normal form. 9/359 useless extension candidates. Maximal degree in co-relation 846. Up to 75 conditions per place. [2020-10-16 03:52:10,802 INFO L132 encePairwiseOnDemand]: 140/146 looper letters, 0 selfloop transitions, 0 changer transitions 55/55 dead transitions. [2020-10-16 03:52:10,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 55 transitions, 249 flow [2020-10-16 03:52:10,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:52:10,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:52:10,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 336 transitions. [2020-10-16 03:52:10,804 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7671232876712328 [2020-10-16 03:52:10,804 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 336 transitions. [2020-10-16 03:52:10,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 336 transitions. [2020-10-16 03:52:10,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:52:10,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 336 transitions. [2020-10-16 03:52:10,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:52:10,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:52:10,807 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:52:10,807 INFO L185 Difference]: Start difference. First operand has 52 places, 55 transitions, 233 flow. Second operand 3 states and 336 transitions. [2020-10-16 03:52:10,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 55 transitions, 249 flow [2020-10-16 03:52:10,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 55 transitions, 241 flow, removed 2 selfloop flow, removed 1 redundant places. [2020-10-16 03:52:10,812 INFO L241 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2020-10-16 03:52:10,812 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2020-10-16 03:52:10,812 INFO L342 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2020-10-16 03:52:10,812 INFO L481 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2020-10-16 03:52:10,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:52:10,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 03:52:10,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:52:10 BasicIcfg [2020-10-16 03:52:10,817 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 03:52:10,824 INFO L168 Benchmark]: Toolchain (without parser) took 3922.14 ms. Allocated memory was 251.1 MB in the beginning and 370.1 MB in the end (delta: 119.0 MB). Free memory was 203.8 MB in the beginning and 240.9 MB in the end (delta: -37.1 MB). Peak memory consumption was 81.9 MB. Max. memory is 14.2 GB. [2020-10-16 03:52:10,826 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 251.1 MB. Free memory was 226.7 MB in the beginning and 225.8 MB in the end (delta: 838.9 kB). Peak memory consumption was 838.9 kB. Max. memory is 14.2 GB. [2020-10-16 03:52:10,827 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.84 ms. Allocated memory was 251.1 MB in the beginning and 313.5 MB in the end (delta: 62.4 MB). Free memory was 203.8 MB in the beginning and 271.5 MB in the end (delta: -67.6 MB). Peak memory consumption was 29.7 MB. Max. memory is 14.2 GB. [2020-10-16 03:52:10,828 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.91 ms. Allocated memory is still 313.5 MB. Free memory was 271.5 MB in the beginning and 269.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 03:52:10,829 INFO L168 Benchmark]: Boogie Preprocessor took 31.56 ms. Allocated memory is still 313.5 MB. Free memory was 269.0 MB in the beginning and 267.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-16 03:52:10,830 INFO L168 Benchmark]: RCFGBuilder took 385.03 ms. Allocated memory is still 313.5 MB. Free memory was 267.3 MB in the beginning and 244.5 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 14.2 GB. [2020-10-16 03:52:10,833 INFO L168 Benchmark]: TraceAbstraction took 2793.87 ms. Allocated memory was 313.5 MB in the beginning and 370.1 MB in the end (delta: 56.6 MB). Free memory was 243.7 MB in the beginning and 240.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 59.4 MB. Max. memory is 14.2 GB. [2020-10-16 03:52:10,844 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 251.1 MB. Free memory was 226.7 MB in the beginning and 225.8 MB in the end (delta: 838.9 kB). Peak memory consumption was 838.9 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 657.84 ms. Allocated memory was 251.1 MB in the beginning and 313.5 MB in the end (delta: 62.4 MB). Free memory was 203.8 MB in the beginning and 271.5 MB in the end (delta: -67.6 MB). Peak memory consumption was 29.7 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 47.91 ms. Allocated memory is still 313.5 MB. Free memory was 271.5 MB in the beginning and 269.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 31.56 ms. Allocated memory is still 313.5 MB. Free memory was 269.0 MB in the beginning and 267.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 385.03 ms. Allocated memory is still 313.5 MB. Free memory was 267.3 MB in the beginning and 244.5 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2793.87 ms. Allocated memory was 313.5 MB in the beginning and 370.1 MB in the end (delta: 56.6 MB). Free memory was 243.7 MB in the beginning and 240.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 59.4 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1510 VarBasedMoverChecksPositive, 100 VarBasedMoverChecksNegative, 39 SemBasedMoverChecksPositive, 61 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 396 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.1s, 71 PlacesBefore, 38 PlacesAfterwards, 91 TransitionsBefore, 50 TransitionsAfterwards, 2992 CoEnabledTransitionPairs, 4 FixpointIterations, 11 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 54 TotalNumberOfCompositions, 7564 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. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 89 SDtfs, 21 SDslu, 0 SDs, 0 SdLazy, 105 SolverSat, 19 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=237occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, 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, 2577 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...