/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-abd8500 [2020-01-16 21:18:33,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-01-16 21:18:33,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-01-16 21:18:33,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-01-16 21:18:33,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-01-16 21:18:33,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-01-16 21:18:33,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-01-16 21:18:33,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-01-16 21:18:33,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-01-16 21:18:33,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-01-16 21:18:33,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-01-16 21:18:33,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-01-16 21:18:33,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-01-16 21:18:33,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-01-16 21:18:33,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-01-16 21:18:33,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-01-16 21:18:33,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-01-16 21:18:33,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-01-16 21:18:33,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-01-16 21:18:33,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-01-16 21:18:33,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-01-16 21:18:33,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-01-16 21:18:33,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-01-16 21:18:33,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-01-16 21:18:33,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-01-16 21:18:33,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-01-16 21:18:33,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-01-16 21:18:33,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-01-16 21:18:33,920 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.epf [2020-01-16 21:18:33,938 INFO L113 SettingsManager]: Loading preferences was successful [2020-01-16 21:18:33,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-01-16 21:18:33,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-01-16 21:18:33,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-01-16 21:18:33,941 INFO L138 SettingsManager]: * Use SBE=true [2020-01-16 21:18:33,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-01-16 21:18:33,942 INFO L138 SettingsManager]: * sizeof long=4 [2020-01-16 21:18:33,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-01-16 21:18:33,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-01-16 21:18:33,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-01-16 21:18:33,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-01-16 21:18:33,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-01-16 21:18:33,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-01-16 21:18:33,944 INFO L138 SettingsManager]: * sizeof long double=12 [2020-01-16 21:18:33,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-01-16 21:18:33,944 INFO L138 SettingsManager]: * Use constant arrays=true [2020-01-16 21:18:33,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-01-16 21:18:33,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-01-16 21:18:33,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-01-16 21:18:33,945 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-01-16 21:18:33,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-01-16 21:18:33,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 21:18:33,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-01-16 21:18:33,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-01-16 21:18:33,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-01-16 21:18:33,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-01-16 21:18:33,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-01-16 21:18:33,947 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-01-16 21:18:33,947 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-01-16 21:18:34,223 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-01-16 21:18:34,236 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-01-16 21:18:34,239 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-01-16 21:18:34,240 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-01-16 21:18:34,241 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-01-16 21:18:34,242 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl [2020-01-16 21:18:34,242 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl' [2020-01-16 21:18:34,277 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-01-16 21:18:34,279 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-01-16 21:18:34,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-01-16 21:18:34,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-01-16 21:18:34,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-01-16 21:18:34,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:34" (1/1) ... [2020-01-16 21:18:34,305 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:34" (1/1) ... [2020-01-16 21:18:34,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-01-16 21:18:34,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-01-16 21:18:34,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-01-16 21:18:34,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-01-16 21:18:34,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:34" (1/1) ... [2020-01-16 21:18:34,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:34" (1/1) ... [2020-01-16 21:18:34,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:34" (1/1) ... [2020-01-16 21:18:34,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:34" (1/1) ... [2020-01-16 21:18:34,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:34" (1/1) ... [2020-01-16 21:18:34,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:34" (1/1) ... [2020-01-16 21:18:34,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:34" (1/1) ... [2020-01-16 21:18:34,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-01-16 21:18:34,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-01-16 21:18:34,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-01-16 21:18:34,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-01-16 21:18:34,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:34" (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 [2020-01-16 21:18:34,404 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-01-16 21:18:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-01-16 21:18:34,404 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-01-16 21:18:34,404 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-01-16 21:18:34,405 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-01-16 21:18:34,405 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-01-16 21:18:34,405 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-01-16 21:18:34,405 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-01-16 21:18:34,405 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-01-16 21:18:34,406 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-01-16 21:18:34,406 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-01-16 21:18:34,406 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-01-16 21:18:34,406 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-01-16 21:18:34,406 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-01-16 21:18:34,407 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-01-16 21:18:34,407 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-01-16 21:18:34,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-01-16 21:18:34,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-01-16 21:18:34,407 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-01-16 21:18:34,408 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-01-16 21:18:34,408 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-01-16 21:18:34,408 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2020-01-16 21:18:34,408 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2020-01-16 21:18:34,408 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2020-01-16 21:18:34,409 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-01-16 21:18:34,685 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-01-16 21:18:34,686 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2020-01-16 21:18:34,687 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 09:18:34 BoogieIcfgContainer [2020-01-16 21:18:34,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-01-16 21:18:34,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-01-16 21:18:34,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-01-16 21:18:34,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-01-16 21:18:34,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:34" (1/2) ... [2020-01-16 21:18:34,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625630b5 and model type example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.01 09:18:34, skipping insertion in model container [2020-01-16 21:18:34,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 09:18:34" (2/2) ... [2020-01-16 21:18:34,696 INFO L109 eAbstractionObserver]: Analyzing ICFG example_7.bpl [2020-01-16 21:18:34,706 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-01-16 21:18:34,713 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-01-16 21:18:34,714 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-01-16 21:18:34,893 INFO L250 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-01-16 21:18:34,913 INFO L374 AbstractCegarLoop]: Interprodecural is true [2020-01-16 21:18:34,914 INFO L375 AbstractCegarLoop]: Hoare is false [2020-01-16 21:18:34,914 INFO L376 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-01-16 21:18:34,914 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-01-16 21:18:34,914 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-01-16 21:18:34,914 INFO L379 AbstractCegarLoop]: Difference is false [2020-01-16 21:18:34,915 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-01-16 21:18:34,915 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-01-16 21:18:34,936 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 80 transitions [2020-01-16 21:18:34,938 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 60 places, 80 transitions [2020-01-16 21:18:35,202 INFO L129 PetriNetUnfolder]: 321/472 cut-off events. [2020-01-16 21:18:35,202 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2020-01-16 21:18:35,216 INFO L76 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 472 events. 321/472 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1550 event pairs. 0/471 useless extension candidates. Maximal degree in co-relation 416. Up to 140 conditions per place. [2020-01-16 21:18:35,227 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 60 places, 80 transitions [2020-01-16 21:18:35,316 INFO L129 PetriNetUnfolder]: 321/472 cut-off events. [2020-01-16 21:18:35,317 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2020-01-16 21:18:35,321 INFO L76 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 472 events. 321/472 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1550 event pairs. 0/471 useless extension candidates. Maximal degree in co-relation 416. Up to 140 conditions per place. [2020-01-16 21:18:35,331 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-01-16 21:18:35,332 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-01-16 21:18:35,473 INFO L206 etLargeBlockEncoding]: Checked pairs total: 357 [2020-01-16 21:18:35,474 INFO L214 etLargeBlockEncoding]: Total number of compositions: 8 [2020-01-16 21:18:35,474 INFO L162 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 543 [2020-01-16 21:18:35,545 INFO L129 PetriNetUnfolder]: 321/462 cut-off events. [2020-01-16 21:18:35,545 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2020-01-16 21:18:35,545 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:35,547 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:35,547 INFO L426 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:35,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:35,554 INFO L82 PathProgramCache]: Analyzing trace with hash 796862756, now seen corresponding path program 1 times [2020-01-16 21:18:35,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:35,564 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181347120] [2020-01-16 21:18:35,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:35,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:35,712 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181347120] [2020-01-16 21:18:35,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:35,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:18:35,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015244224] [2020-01-16 21:18:35,724 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:18:35,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:35,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:18:35,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:18:35,743 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 88 [2020-01-16 21:18:35,745 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 72 transitions. Second operand 3 states. [2020-01-16 21:18:35,745 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:35,745 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 88 [2020-01-16 21:18:35,747 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:35,867 INFO L129 PetriNetUnfolder]: 285/421 cut-off events. [2020-01-16 21:18:35,867 INFO L130 PetriNetUnfolder]: For 541/541 co-relation queries the response was YES. [2020-01-16 21:18:35,870 INFO L76 FinitePrefix]: Finished finitePrefix Result has 906 conditions, 421 events. 285/421 cut-off events. For 541/541 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1593 event pairs. 7/427 useless extension candidates. Maximal degree in co-relation 410. Up to 140 conditions per place. [2020-01-16 21:18:35,871 INFO L123 encePairwiseOnDemand]: 85/88 looper letters, 5 selfloop transitions, 3 changer transitions [2020-01-16 21:18:35,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:18:35,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:18:35,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2020-01-16 21:18:35,887 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9393939393939394 [2020-01-16 21:18:35,888 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2020-01-16 21:18:35,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2020-01-16 21:18:35,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:35,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2020-01-16 21:18:35,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:18:35,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:18:35,904 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:18:35,906 INFO L174 Difference]: Start difference. First operand has 51 places, 72 transitions. Second operand 3 states and 248 transitions. [2020-01-16 21:18:35,907 INFO L199 Difference]: Finished difference. Result has 53 places, 63 transitions [2020-01-16 21:18:35,910 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=53, PETRI_TRANSITIONS=63} [2020-01-16 21:18:35,912 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 53 places, 63 transitions [2020-01-16 21:18:35,912 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 53 places, 63 transitions [2020-01-16 21:18:35,966 INFO L129 PetriNetUnfolder]: 285/421 cut-off events. [2020-01-16 21:18:35,966 INFO L130 PetriNetUnfolder]: For 406/406 co-relation queries the response was YES. [2020-01-16 21:18:35,969 INFO L76 FinitePrefix]: Finished finitePrefix Result has 849 conditions, 421 events. 285/421 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1409 event pairs. 0/420 useless extension candidates. Maximal degree in co-relation 830. Up to 140 conditions per place. [2020-01-16 21:18:35,972 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 8 of 53 places, 0 of 63 transitions, 1 of 289 flow. [2020-01-16 21:18:35,973 INFO L478 AbstractCegarLoop]: Abstraction has has 45 places, 63 transitions [2020-01-16 21:18:35,973 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:18:36,024 INFO L129 PetriNetUnfolder]: 285/419 cut-off events. [2020-01-16 21:18:36,025 INFO L130 PetriNetUnfolder]: For 406/406 co-relation queries the response was YES. [2020-01-16 21:18:36,025 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:36,025 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:36,025 INFO L426 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:36,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:36,027 INFO L82 PathProgramCache]: Analyzing trace with hash -2089357870, now seen corresponding path program 1 times [2020-01-16 21:18:36,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:36,028 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795407416] [2020-01-16 21:18:36,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:36,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:36,091 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795407416] [2020-01-16 21:18:36,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:36,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:18:36,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909020895] [2020-01-16 21:18:36,094 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:18:36,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:36,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:18:36,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:18:36,096 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 88 [2020-01-16 21:18:36,096 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 63 transitions. Second operand 3 states. [2020-01-16 21:18:36,096 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:36,096 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 88 [2020-01-16 21:18:36,097 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:36,135 INFO L129 PetriNetUnfolder]: 110/190 cut-off events. [2020-01-16 21:18:36,136 INFO L130 PetriNetUnfolder]: For 343/343 co-relation queries the response was YES. [2020-01-16 21:18:36,137 INFO L76 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 190 events. 110/190 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 641 event pairs. 51/240 useless extension candidates. Maximal degree in co-relation 332. Up to 60 conditions per place. [2020-01-16 21:18:36,138 INFO L123 encePairwiseOnDemand]: 82/88 looper letters, 2 selfloop transitions, 6 changer transitions [2020-01-16 21:18:36,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:18:36,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:18:36,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2020-01-16 21:18:36,141 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9393939393939394 [2020-01-16 21:18:36,141 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2020-01-16 21:18:36,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2020-01-16 21:18:36,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:36,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2020-01-16 21:18:36,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:18:36,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:18:36,144 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:18:36,144 INFO L174 Difference]: Start difference. First operand has 45 places, 63 transitions. Second operand 3 states and 248 transitions. [2020-01-16 21:18:36,145 INFO L199 Difference]: Finished difference. Result has 47 places, 58 transitions [2020-01-16 21:18:36,146 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=47, PETRI_TRANSITIONS=58} [2020-01-16 21:18:36,146 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 47 places, 58 transitions [2020-01-16 21:18:36,147 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 47 places, 58 transitions [2020-01-16 21:18:36,167 INFO L129 PetriNetUnfolder]: 110/190 cut-off events. [2020-01-16 21:18:36,167 INFO L130 PetriNetUnfolder]: For 176/176 co-relation queries the response was YES. [2020-01-16 21:18:36,169 INFO L76 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 190 events. 110/190 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 558 event pairs. 0/189 useless extension candidates. Maximal degree in co-relation 359. Up to 60 conditions per place. [2020-01-16 21:18:36,170 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 47 places, 0 of 58 transitions, 1 of 265 flow. [2020-01-16 21:18:36,170 INFO L478 AbstractCegarLoop]: Abstraction has has 46 places, 58 transitions [2020-01-16 21:18:36,170 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:18:36,191 INFO L129 PetriNetUnfolder]: 110/188 cut-off events. [2020-01-16 21:18:36,191 INFO L130 PetriNetUnfolder]: For 176/176 co-relation queries the response was YES. [2020-01-16 21:18:36,192 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:36,192 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:36,192 INFO L426 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:36,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:36,193 INFO L82 PathProgramCache]: Analyzing trace with hash 767280338, now seen corresponding path program 1 times [2020-01-16 21:18:36,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:36,193 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901590930] [2020-01-16 21:18:36,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:36,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:36,250 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901590930] [2020-01-16 21:18:36,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:36,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:18:36,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811218177] [2020-01-16 21:18:36,251 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:18:36,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:36,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:18:36,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:18:36,254 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 88 [2020-01-16 21:18:36,254 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 58 transitions. Second operand 3 states. [2020-01-16 21:18:36,255 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:36,255 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 88 [2020-01-16 21:18:36,255 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:36,300 INFO L129 PetriNetUnfolder]: 64/129 cut-off events. [2020-01-16 21:18:36,300 INFO L130 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2020-01-16 21:18:36,302 INFO L76 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 129 events. 64/129 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 414 event pairs. 11/139 useless extension candidates. Maximal degree in co-relation 226. Up to 30 conditions per place. [2020-01-16 21:18:36,302 INFO L123 encePairwiseOnDemand]: 84/88 looper letters, 4 selfloop transitions, 4 changer transitions [2020-01-16 21:18:36,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:18:36,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:18:36,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2020-01-16 21:18:36,305 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9393939393939394 [2020-01-16 21:18:36,305 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2020-01-16 21:18:36,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2020-01-16 21:18:36,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:36,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2020-01-16 21:18:36,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:18:36,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:18:36,309 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:18:36,309 INFO L174 Difference]: Start difference. First operand has 46 places, 58 transitions. Second operand 3 states and 248 transitions. [2020-01-16 21:18:36,310 INFO L199 Difference]: Finished difference. Result has 48 places, 55 transitions [2020-01-16 21:18:36,311 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=251, PETRI_PLACES=48, PETRI_TRANSITIONS=55} [2020-01-16 21:18:36,311 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 48 places, 55 transitions [2020-01-16 21:18:36,311 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 48 places, 55 transitions [2020-01-16 21:18:36,333 INFO L129 PetriNetUnfolder]: 64/129 cut-off events. [2020-01-16 21:18:36,333 INFO L130 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2020-01-16 21:18:36,335 INFO L76 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 129 events. 64/129 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 365 event pairs. 0/128 useless extension candidates. Maximal degree in co-relation 243. Up to 30 conditions per place. [2020-01-16 21:18:36,335 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 48 places, 0 of 55 transitions, 1 of 251 flow. [2020-01-16 21:18:36,336 INFO L478 AbstractCegarLoop]: Abstraction has has 47 places, 55 transitions [2020-01-16 21:18:36,336 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:18:36,356 INFO L129 PetriNetUnfolder]: 64/127 cut-off events. [2020-01-16 21:18:36,357 INFO L130 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2020-01-16 21:18:36,357 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:36,357 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:36,357 INFO L426 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:36,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:36,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1113511396, now seen corresponding path program 1 times [2020-01-16 21:18:36,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:36,359 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305134542] [2020-01-16 21:18:36,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:36,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:36,391 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305134542] [2020-01-16 21:18:36,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:36,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:18:36,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837912767] [2020-01-16 21:18:36,393 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:18:36,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:36,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:18:36,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:18:36,395 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 88 [2020-01-16 21:18:36,395 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 55 transitions. Second operand 3 states. [2020-01-16 21:18:36,395 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:36,396 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 88 [2020-01-16 21:18:36,396 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:36,450 INFO L129 PetriNetUnfolder]: 12/46 cut-off events. [2020-01-16 21:18:36,450 INFO L130 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2020-01-16 21:18:36,451 INFO L76 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 46 events. 12/46 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs. 17/62 useless extension candidates. Maximal degree in co-relation 67. Up to 8 conditions per place. [2020-01-16 21:18:36,451 INFO L123 encePairwiseOnDemand]: 81/88 looper letters, 1 selfloop transitions, 7 changer transitions [2020-01-16 21:18:36,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:18:36,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:18:36,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2020-01-16 21:18:36,453 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9393939393939394 [2020-01-16 21:18:36,453 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2020-01-16 21:18:36,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2020-01-16 21:18:36,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:36,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2020-01-16 21:18:36,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:18:36,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:18:36,455 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:18:36,455 INFO L174 Difference]: Start difference. First operand has 47 places, 55 transitions. Second operand 3 states and 248 transitions. [2020-01-16 21:18:36,456 INFO L199 Difference]: Finished difference. Result has 49 places, 38 transitions [2020-01-16 21:18:36,456 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2020-01-16 21:18:36,456 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 49 places, 38 transitions [2020-01-16 21:18:36,457 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 49 places, 38 transitions [2020-01-16 21:18:36,462 INFO L129 PetriNetUnfolder]: 12/46 cut-off events. [2020-01-16 21:18:36,463 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2020-01-16 21:18:36,463 INFO L76 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 46 events. 12/46 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs. 0/45 useless extension candidates. Maximal degree in co-relation 68. Up to 8 conditions per place. [2020-01-16 21:18:36,464 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 49 places, 0 of 38 transitions, 1 of 167 flow. [2020-01-16 21:18:36,464 INFO L478 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions [2020-01-16 21:18:36,464 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:18:36,470 INFO L129 PetriNetUnfolder]: 12/44 cut-off events. [2020-01-16 21:18:36,470 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2020-01-16 21:18:36,470 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:36,471 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:36,471 INFO L426 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:36,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:36,471 INFO L82 PathProgramCache]: Analyzing trace with hash 878713258, now seen corresponding path program 1 times [2020-01-16 21:18:36,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:36,472 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684436537] [2020-01-16 21:18:36,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:36,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:36,493 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684436537] [2020-01-16 21:18:36,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:36,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:18:36,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400926194] [2020-01-16 21:18:36,494 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:18:36,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:36,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:18:36,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:18:36,495 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 88 [2020-01-16 21:18:36,496 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions. Second operand 3 states. [2020-01-16 21:18:36,496 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:36,496 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 88 [2020-01-16 21:18:36,496 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:36,506 INFO L129 PetriNetUnfolder]: 1/25 cut-off events. [2020-01-16 21:18:36,507 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2020-01-16 21:18:36,507 INFO L76 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 25 events. 1/25 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs. 5/29 useless extension candidates. Maximal degree in co-relation 28. Up to 3 conditions per place. [2020-01-16 21:18:36,507 INFO L123 encePairwiseOnDemand]: 83/88 looper letters, 1 selfloop transitions, 5 changer transitions [2020-01-16 21:18:36,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:18:36,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:18:36,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2020-01-16 21:18:36,509 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9318181818181818 [2020-01-16 21:18:36,509 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2020-01-16 21:18:36,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2020-01-16 21:18:36,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:36,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2020-01-16 21:18:36,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:18:36,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:18:36,512 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:18:36,512 INFO L174 Difference]: Start difference. First operand has 48 places, 38 transitions. Second operand 3 states and 246 transitions. [2020-01-16 21:18:36,512 INFO L199 Difference]: Finished difference. Result has 50 places, 25 transitions [2020-01-16 21:18:36,512 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=50, PETRI_TRANSITIONS=25} [2020-01-16 21:18:36,513 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 50 places, 25 transitions [2020-01-16 21:18:36,513 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 50 places, 25 transitions [2020-01-16 21:18:36,517 INFO L129 PetriNetUnfolder]: 1/25 cut-off events. [2020-01-16 21:18:36,517 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2020-01-16 21:18:36,517 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 25 events. 1/25 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 20 event pairs. 0/24 useless extension candidates. Maximal degree in co-relation 32. Up to 3 conditions per place. [2020-01-16 21:18:36,518 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 50 places, 0 of 25 transitions, 1 of 103 flow. [2020-01-16 21:18:36,518 INFO L478 AbstractCegarLoop]: Abstraction has has 49 places, 25 transitions [2020-01-16 21:18:36,518 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:18:36,521 INFO L129 PetriNetUnfolder]: 1/23 cut-off events. [2020-01-16 21:18:36,522 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2020-01-16 21:18:36,522 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:36,522 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:36,522 INFO L426 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:36,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:36,523 INFO L82 PathProgramCache]: Analyzing trace with hash -731374712, now seen corresponding path program 1 times [2020-01-16 21:18:36,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:36,523 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596932185] [2020-01-16 21:18:36,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:37,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:37,046 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596932185] [2020-01-16 21:18:37,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:37,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:18:37,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630386352] [2020-01-16 21:18:37,048 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:18:37,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:37,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:18:37,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:18:37,050 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:18:37,051 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 25 transitions. Second operand 9 states. [2020-01-16 21:18:37,051 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:37,051 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:18:37,051 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:37,364 INFO L129 PetriNetUnfolder]: 414/756 cut-off events. [2020-01-16 21:18:37,364 INFO L130 PetriNetUnfolder]: For 164/164 co-relation queries the response was YES. [2020-01-16 21:18:37,369 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 756 events. 414/756 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4126 event pairs. 0/696 useless extension candidates. Maximal degree in co-relation 1458. Up to 225 conditions per place. [2020-01-16 21:18:37,391 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 28 selfloop transitions, 14 changer transitions [2020-01-16 21:18:37,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:18:37,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:18:37,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:18:37,394 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:18:37,395 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:18:37,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:18:37,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:37,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:18:37,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:18:37,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:18:37,399 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:18:37,399 INFO L174 Difference]: Start difference. First operand has 49 places, 25 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:18:37,400 INFO L199 Difference]: Finished difference. Result has 64 places, 37 transitions [2020-01-16 21:18:37,400 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=187, PETRI_PLACES=64, PETRI_TRANSITIONS=37} [2020-01-16 21:18:37,400 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 64 places, 37 transitions [2020-01-16 21:18:37,401 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 37 transitions [2020-01-16 21:18:37,412 INFO L129 PetriNetUnfolder]: 10/85 cut-off events. [2020-01-16 21:18:37,413 INFO L130 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2020-01-16 21:18:37,414 INFO L76 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 85 events. 10/85 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 312 event pairs. 0/75 useless extension candidates. Maximal degree in co-relation 157. Up to 8 conditions per place. [2020-01-16 21:18:37,415 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 64 places, 0 of 37 transitions, 0 of 187 flow. [2020-01-16 21:18:37,415 INFO L478 AbstractCegarLoop]: Abstraction has has 64 places, 37 transitions [2020-01-16 21:18:37,415 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:18:37,428 INFO L129 PetriNetUnfolder]: 10/79 cut-off events. [2020-01-16 21:18:37,429 INFO L130 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2020-01-16 21:18:37,429 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:37,429 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:37,429 INFO L426 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:37,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:37,430 INFO L82 PathProgramCache]: Analyzing trace with hash -941704820, now seen corresponding path program 2 times [2020-01-16 21:18:37,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:37,430 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775319307] [2020-01-16 21:18:37,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:37,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:37,896 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775319307] [2020-01-16 21:18:37,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:37,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:18:37,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313531467] [2020-01-16 21:18:37,898 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:18:37,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:37,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:18:37,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:18:37,900 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:18:37,901 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 37 transitions. Second operand 9 states. [2020-01-16 21:18:37,901 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:37,901 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:18:37,901 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:38,429 INFO L129 PetriNetUnfolder]: 548/1188 cut-off events. [2020-01-16 21:18:38,429 INFO L130 PetriNetUnfolder]: For 1353/1379 co-relation queries the response was YES. [2020-01-16 21:18:38,439 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3277 conditions, 1188 events. 548/1188 cut-off events. For 1353/1379 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8276 event pairs. 1/1133 useless extension candidates. Maximal degree in co-relation 3166. Up to 315 conditions per place. [2020-01-16 21:18:38,440 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 33 selfloop transitions, 23 changer transitions [2020-01-16 21:18:38,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:18:38,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:18:38,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:18:38,443 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:18:38,443 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:18:38,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:18:38,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:38,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:18:38,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:18:38,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:18:38,447 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:18:38,450 INFO L174 Difference]: Start difference. First operand has 64 places, 37 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:18:38,452 INFO L199 Difference]: Finished difference. Result has 79 places, 51 transitions [2020-01-16 21:18:38,453 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=358, PETRI_PLACES=79, PETRI_TRANSITIONS=51} [2020-01-16 21:18:38,453 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 79 places, 51 transitions [2020-01-16 21:18:38,460 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 79 places, 51 transitions [2020-01-16 21:18:38,499 INFO L129 PetriNetUnfolder]: 24/174 cut-off events. [2020-01-16 21:18:38,499 INFO L130 PetriNetUnfolder]: For 301/301 co-relation queries the response was YES. [2020-01-16 21:18:38,501 INFO L76 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 174 events. 24/174 cut-off events. For 301/301 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 998 event pairs. 0/154 useless extension candidates. Maximal degree in co-relation 387. Up to 20 conditions per place. [2020-01-16 21:18:38,502 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 79 places, 0 of 51 transitions, 0 of 358 flow. [2020-01-16 21:18:38,503 INFO L478 AbstractCegarLoop]: Abstraction has has 79 places, 51 transitions [2020-01-16 21:18:38,503 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:18:38,536 INFO L129 PetriNetUnfolder]: 24/161 cut-off events. [2020-01-16 21:18:38,536 INFO L130 PetriNetUnfolder]: For 301/301 co-relation queries the response was YES. [2020-01-16 21:18:38,536 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:38,536 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:38,537 INFO L426 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:38,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:38,537 INFO L82 PathProgramCache]: Analyzing trace with hash -2120079182, now seen corresponding path program 3 times [2020-01-16 21:18:38,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:38,539 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968567114] [2020-01-16 21:18:38,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:38,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:38,925 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968567114] [2020-01-16 21:18:38,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:38,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:18:38,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283352416] [2020-01-16 21:18:38,927 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:18:38,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:38,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:18:38,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:18:38,929 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:18:38,930 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 51 transitions. Second operand 9 states. [2020-01-16 21:18:38,930 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:38,930 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:18:38,930 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:39,661 INFO L129 PetriNetUnfolder]: 630/1441 cut-off events. [2020-01-16 21:18:39,662 INFO L130 PetriNetUnfolder]: For 4430/4502 co-relation queries the response was YES. [2020-01-16 21:18:39,676 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5093 conditions, 1441 events. 630/1441 cut-off events. For 4430/4502 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 10374 event pairs. 1/1378 useless extension candidates. Maximal degree in co-relation 4729. Up to 391 conditions per place. [2020-01-16 21:18:39,677 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 55 selfloop transitions, 51 changer transitions [2020-01-16 21:18:39,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:18:39,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:18:39,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:18:39,680 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:18:39,680 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:18:39,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:18:39,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:39,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:18:39,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:18:39,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:18:39,685 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:18:39,685 INFO L174 Difference]: Start difference. First operand has 79 places, 51 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:18:39,686 INFO L199 Difference]: Finished difference. Result has 94 places, 84 transitions [2020-01-16 21:18:39,687 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=864, PETRI_PLACES=94, PETRI_TRANSITIONS=84} [2020-01-16 21:18:39,687 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 94 places, 84 transitions [2020-01-16 21:18:39,687 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 94 places, 84 transitions [2020-01-16 21:18:39,770 INFO L129 PetriNetUnfolder]: 57/393 cut-off events. [2020-01-16 21:18:39,770 INFO L130 PetriNetUnfolder]: For 1341/1370 co-relation queries the response was YES. [2020-01-16 21:18:39,776 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 393 events. 57/393 cut-off events. For 1341/1370 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3164 event pairs. 0/354 useless extension candidates. Maximal degree in co-relation 994. Up to 40 conditions per place. [2020-01-16 21:18:39,777 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 94 places, 0 of 84 transitions, 0 of 864 flow. [2020-01-16 21:18:39,778 INFO L478 AbstractCegarLoop]: Abstraction has has 94 places, 84 transitions [2020-01-16 21:18:39,778 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:18:39,848 INFO L129 PetriNetUnfolder]: 57/358 cut-off events. [2020-01-16 21:18:39,849 INFO L130 PetriNetUnfolder]: For 1340/1363 co-relation queries the response was YES. [2020-01-16 21:18:39,849 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:39,849 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:39,849 INFO L426 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:39,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:39,850 INFO L82 PathProgramCache]: Analyzing trace with hash 2130231168, now seen corresponding path program 4 times [2020-01-16 21:18:39,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:39,850 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008476747] [2020-01-16 21:18:39,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:40,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:40,180 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008476747] [2020-01-16 21:18:40,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:40,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:18:40,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999409121] [2020-01-16 21:18:40,181 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:18:40,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:40,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:18:40,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:18:40,185 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:18:40,186 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 84 transitions. Second operand 9 states. [2020-01-16 21:18:40,186 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:40,186 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:18:40,186 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:41,241 INFO L129 PetriNetUnfolder]: 667/1650 cut-off events. [2020-01-16 21:18:41,241 INFO L130 PetriNetUnfolder]: For 7892/8006 co-relation queries the response was YES. [2020-01-16 21:18:41,267 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6461 conditions, 1650 events. 667/1650 cut-off events. For 7892/8006 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 13218 event pairs. 1/1589 useless extension candidates. Maximal degree in co-relation 5983. Up to 405 conditions per place. [2020-01-16 21:18:41,269 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 41 selfloop transitions, 52 changer transitions [2020-01-16 21:18:41,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:18:41,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:18:41,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:18:41,273 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:18:41,273 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:18:41,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:18:41,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:41,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:18:41,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:18:41,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:18:41,278 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:18:41,278 INFO L174 Difference]: Start difference. First operand has 94 places, 84 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:18:41,280 INFO L199 Difference]: Finished difference. Result has 105 places, 86 transitions [2020-01-16 21:18:41,280 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1038, PETRI_PLACES=105, PETRI_TRANSITIONS=86} [2020-01-16 21:18:41,281 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 105 places, 86 transitions [2020-01-16 21:18:41,281 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 105 places, 86 transitions [2020-01-16 21:18:41,402 INFO L129 PetriNetUnfolder]: 57/392 cut-off events. [2020-01-16 21:18:41,403 INFO L130 PetriNetUnfolder]: For 2031/2057 co-relation queries the response was YES. [2020-01-16 21:18:41,409 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1387 conditions, 392 events. 57/392 cut-off events. For 2031/2057 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3082 event pairs. 0/350 useless extension candidates. Maximal degree in co-relation 1252. Up to 40 conditions per place. [2020-01-16 21:18:41,412 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 105 places, 0 of 86 transitions, 38 of 1038 flow. [2020-01-16 21:18:41,412 INFO L478 AbstractCegarLoop]: Abstraction has has 104 places, 86 transitions [2020-01-16 21:18:41,412 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:18:41,513 INFO L129 PetriNetUnfolder]: 57/358 cut-off events. [2020-01-16 21:18:41,513 INFO L130 PetriNetUnfolder]: For 2031/2057 co-relation queries the response was YES. [2020-01-16 21:18:41,513 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:41,514 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:41,514 INFO L426 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:41,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:41,514 INFO L82 PathProgramCache]: Analyzing trace with hash -939643392, now seen corresponding path program 5 times [2020-01-16 21:18:41,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:41,515 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239260355] [2020-01-16 21:18:41,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:41,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:41,885 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239260355] [2020-01-16 21:18:41,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:41,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:18:41,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11578848] [2020-01-16 21:18:41,887 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:18:41,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:41,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:18:41,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:18:41,890 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:18:41,892 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 86 transitions. Second operand 9 states. [2020-01-16 21:18:41,892 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:41,892 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:18:41,893 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:43,199 INFO L129 PetriNetUnfolder]: 803/2049 cut-off events. [2020-01-16 21:18:43,199 INFO L130 PetriNetUnfolder]: For 13304/13418 co-relation queries the response was YES. [2020-01-16 21:18:43,231 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8801 conditions, 2049 events. 803/2049 cut-off events. For 13304/13418 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 17028 event pairs. 1/1984 useless extension candidates. Maximal degree in co-relation 8637. Up to 542 conditions per place. [2020-01-16 21:18:43,232 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 56 selfloop transitions, 75 changer transitions [2020-01-16 21:18:43,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:18:43,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:18:43,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:18:43,235 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:18:43,235 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:18:43,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:18:43,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:43,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:18:43,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:18:43,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:18:43,240 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:18:43,240 INFO L174 Difference]: Start difference. First operand has 104 places, 86 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:18:43,244 INFO L199 Difference]: Finished difference. Result has 119 places, 115 transitions [2020-01-16 21:18:43,246 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1731, PETRI_PLACES=119, PETRI_TRANSITIONS=115} [2020-01-16 21:18:43,246 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 119 places, 115 transitions [2020-01-16 21:18:43,246 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 119 places, 115 transitions [2020-01-16 21:18:43,484 INFO L129 PetriNetUnfolder]: 95/649 cut-off events. [2020-01-16 21:18:43,484 INFO L130 PetriNetUnfolder]: For 5094/5121 co-relation queries the response was YES. [2020-01-16 21:18:43,494 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2517 conditions, 649 events. 95/649 cut-off events. For 5094/5121 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5932 event pairs. 0/586 useless extension candidates. Maximal degree in co-relation 2349. Up to 72 conditions per place. [2020-01-16 21:18:43,495 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 119 places, 0 of 115 transitions, 60 of 1731 flow. [2020-01-16 21:18:43,496 INFO L478 AbstractCegarLoop]: Abstraction has has 118 places, 115 transitions [2020-01-16 21:18:43,496 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:18:43,639 INFO L129 PetriNetUnfolder]: 95/594 cut-off events. [2020-01-16 21:18:43,639 INFO L130 PetriNetUnfolder]: For 5088/5101 co-relation queries the response was YES. [2020-01-16 21:18:43,640 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:43,640 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:43,640 INFO L426 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:43,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:43,640 INFO L82 PathProgramCache]: Analyzing trace with hash 225061170, now seen corresponding path program 1 times [2020-01-16 21:18:43,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:43,646 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743605544] [2020-01-16 21:18:43,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:43,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:43,668 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743605544] [2020-01-16 21:18:43,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:43,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:18:43,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833011276] [2020-01-16 21:18:43,670 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:18:43,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:43,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:18:43,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:18:43,671 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 88 [2020-01-16 21:18:43,671 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 115 transitions. Second operand 3 states. [2020-01-16 21:18:43,671 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:43,672 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 88 [2020-01-16 21:18:43,672 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:43,863 INFO L129 PetriNetUnfolder]: 59/592 cut-off events. [2020-01-16 21:18:43,863 INFO L130 PetriNetUnfolder]: For 5173/5199 co-relation queries the response was YES. [2020-01-16 21:18:43,871 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2381 conditions, 592 events. 59/592 cut-off events. For 5173/5199 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5487 event pairs. 21/552 useless extension candidates. Maximal degree in co-relation 2216. Up to 61 conditions per place. [2020-01-16 21:18:43,872 INFO L123 encePairwiseOnDemand]: 86/88 looper letters, 1 selfloop transitions, 2 changer transitions [2020-01-16 21:18:43,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:18:43,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:18:43,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2020-01-16 21:18:43,873 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9204545454545454 [2020-01-16 21:18:43,873 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 243 transitions. [2020-01-16 21:18:43,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 243 transitions. [2020-01-16 21:18:43,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:43,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 243 transitions. [2020-01-16 21:18:43,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:18:43,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:18:43,875 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:18:43,876 INFO L174 Difference]: Start difference. First operand has 118 places, 115 transitions. Second operand 3 states and 243 transitions. [2020-01-16 21:18:43,877 INFO L199 Difference]: Finished difference. Result has 120 places, 113 transitions [2020-01-16 21:18:43,877 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=1671, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1663, PETRI_PLACES=120, PETRI_TRANSITIONS=113} [2020-01-16 21:18:43,877 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 120 places, 113 transitions [2020-01-16 21:18:43,877 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 120 places, 113 transitions [2020-01-16 21:18:44,021 INFO L129 PetriNetUnfolder]: 59/592 cut-off events. [2020-01-16 21:18:44,021 INFO L130 PetriNetUnfolder]: For 5032/5045 co-relation queries the response was YES. [2020-01-16 21:18:44,028 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2345 conditions, 592 events. 59/592 cut-off events. For 5032/5045 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5524 event pairs. 0/529 useless extension candidates. Maximal degree in co-relation 2288. Up to 61 conditions per place. [2020-01-16 21:18:44,029 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 120 places, 0 of 113 transitions, 1 of 1663 flow. [2020-01-16 21:18:44,029 INFO L478 AbstractCegarLoop]: Abstraction has has 119 places, 113 transitions [2020-01-16 21:18:44,029 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:18:44,177 INFO L129 PetriNetUnfolder]: 59/537 cut-off events. [2020-01-16 21:18:44,178 INFO L130 PetriNetUnfolder]: For 5032/5045 co-relation queries the response was YES. [2020-01-16 21:18:44,178 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:44,178 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:44,178 INFO L426 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:44,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:44,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1892527148, now seen corresponding path program 6 times [2020-01-16 21:18:44,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:44,179 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188798662] [2020-01-16 21:18:44,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:44,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:44,525 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188798662] [2020-01-16 21:18:44,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:44,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:18:44,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23675254] [2020-01-16 21:18:44,527 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:18:44,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:44,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:18:44,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:18:44,528 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:18:44,529 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 113 transitions. Second operand 9 states. [2020-01-16 21:18:44,529 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:44,529 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:18:44,529 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:45,641 INFO L129 PetriNetUnfolder]: 718/1996 cut-off events. [2020-01-16 21:18:45,641 INFO L130 PetriNetUnfolder]: For 19872/19984 co-relation queries the response was YES. [2020-01-16 21:18:45,654 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9687 conditions, 1996 events. 718/1996 cut-off events. For 19872/19984 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 17204 event pairs. 1/1939 useless extension candidates. Maximal degree in co-relation 9509. Up to 541 conditions per place. [2020-01-16 21:18:45,655 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 74 selfloop transitions, 93 changer transitions [2020-01-16 21:18:45,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:18:45,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:18:45,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:18:45,658 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:18:45,658 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:18:45,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:18:45,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:45,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:18:45,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:18:45,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:18:45,663 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:18:45,663 INFO L174 Difference]: Start difference. First operand has 119 places, 113 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:18:45,664 INFO L199 Difference]: Finished difference. Result has 132 places, 136 transitions [2020-01-16 21:18:45,665 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=1662, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2367, PETRI_PLACES=132, PETRI_TRANSITIONS=136} [2020-01-16 21:18:45,665 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 132 places, 136 transitions [2020-01-16 21:18:45,665 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 132 places, 136 transitions [2020-01-16 21:18:45,847 INFO L129 PetriNetUnfolder]: 75/763 cut-off events. [2020-01-16 21:18:45,847 INFO L130 PetriNetUnfolder]: For 8907/8925 co-relation queries the response was YES. [2020-01-16 21:18:45,853 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3320 conditions, 763 events. 75/763 cut-off events. For 8907/8925 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7664 event pairs. 0/689 useless extension candidates. Maximal degree in co-relation 3140. Up to 77 conditions per place. [2020-01-16 21:18:45,855 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 132 places, 0 of 136 transitions, 0 of 2367 flow. [2020-01-16 21:18:45,855 INFO L478 AbstractCegarLoop]: Abstraction has has 132 places, 136 transitions [2020-01-16 21:18:45,855 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:18:45,975 INFO L129 PetriNetUnfolder]: 75/693 cut-off events. [2020-01-16 21:18:45,976 INFO L130 PetriNetUnfolder]: For 8907/8925 co-relation queries the response was YES. [2020-01-16 21:18:45,976 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:45,976 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:45,976 INFO L426 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:45,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:45,976 INFO L82 PathProgramCache]: Analyzing trace with hash 706988658, now seen corresponding path program 7 times [2020-01-16 21:18:45,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:45,977 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222292434] [2020-01-16 21:18:45,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:46,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:46,370 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222292434] [2020-01-16 21:18:46,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:46,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:18:46,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866166379] [2020-01-16 21:18:46,371 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:18:46,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:46,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:18:46,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:18:46,373 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:18:46,373 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 136 transitions. Second operand 9 states. [2020-01-16 21:18:46,374 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:46,374 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:18:46,374 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:48,680 INFO L129 PetriNetUnfolder]: 916/3172 cut-off events. [2020-01-16 21:18:48,680 INFO L130 PetriNetUnfolder]: For 42156/42268 co-relation queries the response was YES. [2020-01-16 21:18:48,705 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16194 conditions, 3172 events. 916/3172 cut-off events. For 42156/42268 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 33949 event pairs. 1/3101 useless extension candidates. Maximal degree in co-relation 15964. Up to 799 conditions per place. [2020-01-16 21:18:48,707 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 75 selfloop transitions, 187 changer transitions [2020-01-16 21:18:48,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:18:48,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:18:48,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:18:48,709 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:18:48,709 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:18:48,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:18:48,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:48,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:18:48,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:18:48,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:18:48,714 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:18:48,714 INFO L174 Difference]: Start difference. First operand has 132 places, 136 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:18:48,717 INFO L199 Difference]: Finished difference. Result has 147 places, 238 transitions [2020-01-16 21:18:48,717 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=2367, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5183, PETRI_PLACES=147, PETRI_TRANSITIONS=238} [2020-01-16 21:18:48,717 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 147 places, 238 transitions [2020-01-16 21:18:48,718 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 147 places, 238 transitions [2020-01-16 21:18:49,335 INFO L129 PetriNetUnfolder]: 160/1579 cut-off events. [2020-01-16 21:18:49,335 INFO L130 PetriNetUnfolder]: For 25638/25757 co-relation queries the response was YES. [2020-01-16 21:18:49,357 INFO L76 FinitePrefix]: Finished finitePrefix Result has 7519 conditions, 1579 events. 160/1579 cut-off events. For 25638/25757 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 18880 event pairs. 3/1432 useless extension candidates. Maximal degree in co-relation 7275. Up to 162 conditions per place. [2020-01-16 21:18:49,360 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 147 places, 0 of 238 transitions, 0 of 5183 flow. [2020-01-16 21:18:49,360 INFO L478 AbstractCegarLoop]: Abstraction has has 147 places, 238 transitions [2020-01-16 21:18:49,361 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:18:49,806 INFO L129 PetriNetUnfolder]: 160/1425 cut-off events. [2020-01-16 21:18:49,807 INFO L130 PetriNetUnfolder]: For 25651/25800 co-relation queries the response was YES. [2020-01-16 21:18:49,807 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:49,807 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:49,807 INFO L426 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:49,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:49,807 INFO L82 PathProgramCache]: Analyzing trace with hash 176995018, now seen corresponding path program 8 times [2020-01-16 21:18:49,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:49,808 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502261186] [2020-01-16 21:18:49,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:50,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:50,173 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502261186] [2020-01-16 21:18:50,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:50,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:18:50,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230086110] [2020-01-16 21:18:50,174 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:18:50,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:50,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:18:50,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:18:50,175 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:18:50,176 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 238 transitions. Second operand 9 states. [2020-01-16 21:18:50,176 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:50,176 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:18:50,176 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:53,411 INFO L129 PetriNetUnfolder]: 964/3691 cut-off events. [2020-01-16 21:18:53,412 INFO L130 PetriNetUnfolder]: For 65540/65652 co-relation queries the response was YES. [2020-01-16 21:18:53,445 INFO L76 FinitePrefix]: Finished finitePrefix Result has 20822 conditions, 3691 events. 964/3691 cut-off events. For 65540/65652 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 41703 event pairs. 1/3625 useless extension candidates. Maximal degree in co-relation 20561. Up to 942 conditions per place. [2020-01-16 21:18:53,447 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 94 selfloop transitions, 232 changer transitions [2020-01-16 21:18:53,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:18:53,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:18:53,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:18:53,449 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:18:53,450 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:18:53,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:18:53,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:53,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:18:53,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:18:53,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:18:53,454 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:18:53,454 INFO L174 Difference]: Start difference. First operand has 147 places, 238 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:18:53,459 INFO L199 Difference]: Finished difference. Result has 162 places, 301 transitions [2020-01-16 21:18:53,459 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=5183, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7592, PETRI_PLACES=162, PETRI_TRANSITIONS=301} [2020-01-16 21:18:53,460 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 162 places, 301 transitions [2020-01-16 21:18:53,460 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 162 places, 301 transitions [2020-01-16 21:18:54,867 INFO L129 PetriNetUnfolder]: 210/2052 cut-off events. [2020-01-16 21:18:54,868 INFO L130 PetriNetUnfolder]: For 43138/43333 co-relation queries the response was YES. [2020-01-16 21:18:54,887 INFO L76 FinitePrefix]: Finished finitePrefix Result has 10756 conditions, 2052 events. 210/2052 cut-off events. For 43138/43333 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 26122 event pairs. 7/1873 useless extension candidates. Maximal degree in co-relation 10485. Up to 212 conditions per place. [2020-01-16 21:18:54,890 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 162 places, 0 of 301 transitions, 0 of 7592 flow. [2020-01-16 21:18:54,890 INFO L478 AbstractCegarLoop]: Abstraction has has 162 places, 301 transitions [2020-01-16 21:18:54,890 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:18:55,727 INFO L129 PetriNetUnfolder]: 210/1849 cut-off events. [2020-01-16 21:18:55,727 INFO L130 PetriNetUnfolder]: For 43065/43247 co-relation queries the response was YES. [2020-01-16 21:18:55,727 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:55,727 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:55,727 INFO L426 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:55,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:55,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1106782586, now seen corresponding path program 9 times [2020-01-16 21:18:55,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:55,728 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016810448] [2020-01-16 21:18:55,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:56,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:56,071 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016810448] [2020-01-16 21:18:56,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:56,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:18:56,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434812752] [2020-01-16 21:18:56,072 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:18:56,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:56,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:18:56,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:18:56,073 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:18:56,074 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 301 transitions. Second operand 9 states. [2020-01-16 21:18:56,074 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:56,074 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:18:56,074 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:19:00,712 INFO L129 PetriNetUnfolder]: 974/3871 cut-off events. [2020-01-16 21:19:00,712 INFO L130 PetriNetUnfolder]: For 88083/88262 co-relation queries the response was YES. [2020-01-16 21:19:00,753 INFO L76 FinitePrefix]: Finished finitePrefix Result has 23731 conditions, 3871 events. 974/3871 cut-off events. For 88083/88262 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 44604 event pairs. 1/3797 useless extension candidates. Maximal degree in co-relation 23433. Up to 1022 conditions per place. [2020-01-16 21:19:00,755 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 99 selfloop transitions, 263 changer transitions [2020-01-16 21:19:00,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:19:00,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:19:00,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:19:00,757 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:19:00,757 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:19:00,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:19:00,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:19:00,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:19:00,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:19:00,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:19:00,761 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:19:00,761 INFO L174 Difference]: Start difference. First operand has 162 places, 301 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:19:00,766 INFO L199 Difference]: Finished difference. Result has 176 places, 337 transitions [2020-01-16 21:19:00,766 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=7592, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9470, PETRI_PLACES=176, PETRI_TRANSITIONS=337} [2020-01-16 21:19:00,767 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 176 places, 337 transitions [2020-01-16 21:19:00,767 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 176 places, 337 transitions [2020-01-16 21:19:02,862 INFO L129 PetriNetUnfolder]: 235/2334 cut-off events. [2020-01-16 21:19:02,863 INFO L130 PetriNetUnfolder]: For 59911/60075 co-relation queries the response was YES. [2020-01-16 21:19:02,889 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13064 conditions, 2334 events. 235/2334 cut-off events. For 59911/60075 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 30391 event pairs. 4/2132 useless extension candidates. Maximal degree in co-relation 12761. Up to 237 conditions per place. [2020-01-16 21:19:02,892 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 176 places, 0 of 337 transitions, 236 of 9470 flow. [2020-01-16 21:19:02,892 INFO L478 AbstractCegarLoop]: Abstraction has has 175 places, 337 transitions [2020-01-16 21:19:02,893 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:19:04,140 INFO L129 PetriNetUnfolder]: 235/2107 cut-off events. [2020-01-16 21:19:04,140 INFO L130 PetriNetUnfolder]: For 60022/60207 co-relation queries the response was YES. [2020-01-16 21:19:04,140 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:19:04,141 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:19:04,141 INFO L426 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:19:04,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:19:04,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1773818962, now seen corresponding path program 10 times [2020-01-16 21:19:04,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:19:04,142 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200650405] [2020-01-16 21:19:04,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:19:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:19:04,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:19:04,549 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200650405] [2020-01-16 21:19:04,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:19:04,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:19:04,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132484987] [2020-01-16 21:19:04,550 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:19:04,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:19:04,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:19:04,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:19:04,552 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:19:04,552 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 337 transitions. Second operand 9 states. [2020-01-16 21:19:04,553 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:19:04,553 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:19:04,553 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:19:09,806 INFO L129 PetriNetUnfolder]: 984/4142 cut-off events. [2020-01-16 21:19:09,806 INFO L130 PetriNetUnfolder]: For 111941/112100 co-relation queries the response was YES. [2020-01-16 21:19:09,849 INFO L76 FinitePrefix]: Finished finitePrefix Result has 26192 conditions, 4142 events. 984/4142 cut-off events. For 111941/112100 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 49283 event pairs. 3/4061 useless extension candidates. Maximal degree in co-relation 25877. Up to 827 conditions per place. [2020-01-16 21:19:09,852 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 104 selfloop transitions, 292 changer transitions [2020-01-16 21:19:09,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:19:09,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:19:09,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:19:09,854 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:19:09,854 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:19:09,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:19:09,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:19:09,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:19:09,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:19:09,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:19:09,858 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:19:09,858 INFO L174 Difference]: Start difference. First operand has 175 places, 337 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:19:09,864 INFO L199 Difference]: Finished difference. Result has 189 places, 375 transitions [2020-01-16 21:19:09,864 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=9234, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11407, PETRI_PLACES=189, PETRI_TRANSITIONS=375} [2020-01-16 21:19:09,865 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 189 places, 375 transitions [2020-01-16 21:19:09,865 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 189 places, 375 transitions [2020-01-16 21:19:12,526 INFO L129 PetriNetUnfolder]: 262/2631 cut-off events. [2020-01-16 21:19:12,526 INFO L130 PetriNetUnfolder]: For 82520/82744 co-relation queries the response was YES. [2020-01-16 21:19:12,554 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15557 conditions, 2631 events. 262/2631 cut-off events. For 82520/82744 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 35077 event pairs. 6/2419 useless extension candidates. Maximal degree in co-relation 15229. Up to 264 conditions per place. [2020-01-16 21:19:12,558 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 189 places, 0 of 375 transitions, 263 of 11407 flow. [2020-01-16 21:19:12,559 INFO L478 AbstractCegarLoop]: Abstraction has has 188 places, 375 transitions [2020-01-16 21:19:12,559 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:19:14,245 INFO L129 PetriNetUnfolder]: 262/2378 cut-off events. [2020-01-16 21:19:14,245 INFO L130 PetriNetUnfolder]: For 82408/82584 co-relation queries the response was YES. [2020-01-16 21:19:14,245 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:19:14,245 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:19:14,245 INFO L426 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:19:14,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:19:14,246 INFO L82 PathProgramCache]: Analyzing trace with hash -845237552, now seen corresponding path program 11 times [2020-01-16 21:19:14,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:19:14,246 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381752409] [2020-01-16 21:19:14,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:19:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:19:14,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:19:14,575 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381752409] [2020-01-16 21:19:14,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:19:14,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:19:14,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729553471] [2020-01-16 21:19:14,575 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:19:14,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:19:14,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:19:14,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:19:14,576 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:19:14,577 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 375 transitions. Second operand 9 states. [2020-01-16 21:19:14,577 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:19:14,577 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:19:14,577 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:19:21,138 INFO L129 PetriNetUnfolder]: 985/4192 cut-off events. [2020-01-16 21:19:21,138 INFO L130 PetriNetUnfolder]: For 136770/136929 co-relation queries the response was YES. [2020-01-16 21:19:21,185 INFO L76 FinitePrefix]: Finished finitePrefix Result has 27969 conditions, 4192 events. 985/4192 cut-off events. For 136770/136929 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 50212 event pairs. 1/4119 useless extension candidates. Maximal degree in co-relation 27629. Up to 915 conditions per place. [2020-01-16 21:19:21,188 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 127 selfloop transitions, 307 changer transitions [2020-01-16 21:19:21,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:19:21,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:19:21,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:19:21,189 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:19:21,189 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:19:21,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:19:21,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:19:21,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:19:21,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:19:21,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:19:21,192 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:19:21,193 INFO L174 Difference]: Start difference. First operand has 188 places, 375 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:19:21,198 INFO L199 Difference]: Finished difference. Result has 201 places, 390 transitions [2020-01-16 21:19:21,199 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=11144, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12535, PETRI_PLACES=201, PETRI_TRANSITIONS=390} [2020-01-16 21:19:21,199 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 201 places, 390 transitions [2020-01-16 21:19:21,199 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 201 places, 390 transitions [2020-01-16 21:19:24,459 INFO L129 PetriNetUnfolder]: 269/2710 cut-off events. [2020-01-16 21:19:24,459 INFO L130 PetriNetUnfolder]: For 100505/100685 co-relation queries the response was YES. [2020-01-16 21:19:24,496 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16587 conditions, 2710 events. 269/2710 cut-off events. For 100505/100685 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 36370 event pairs. 7/2493 useless extension candidates. Maximal degree in co-relation 16246. Up to 271 conditions per place. [2020-01-16 21:19:24,500 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 201 places, 0 of 390 transitions, 270 of 12535 flow. [2020-01-16 21:19:24,500 INFO L478 AbstractCegarLoop]: Abstraction has has 200 places, 390 transitions [2020-01-16 21:19:24,500 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:19:26,745 INFO L129 PetriNetUnfolder]: 269/2451 cut-off events. [2020-01-16 21:19:26,746 INFO L130 PetriNetUnfolder]: For 100471/100669 co-relation queries the response was YES. [2020-01-16 21:19:26,746 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:19:26,746 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:19:26,746 INFO L426 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:19:26,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:19:26,746 INFO L82 PathProgramCache]: Analyzing trace with hash -445325320, now seen corresponding path program 12 times [2020-01-16 21:19:26,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:19:26,747 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394137180] [2020-01-16 21:19:26,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:19:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:19:27,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:19:27,133 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394137180] [2020-01-16 21:19:27,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:19:27,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:19:27,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279147951] [2020-01-16 21:19:27,134 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:19:27,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:19:27,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:19:27,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:19:27,135 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:19:27,136 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 390 transitions. Second operand 9 states. [2020-01-16 21:19:27,136 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:19:27,136 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:19:27,136 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:19:34,025 INFO L129 PetriNetUnfolder]: 985/4181 cut-off events. [2020-01-16 21:19:34,026 INFO L130 PetriNetUnfolder]: For 157402/157561 co-relation queries the response was YES. [2020-01-16 21:19:34,080 INFO L76 FinitePrefix]: Finished finitePrefix Result has 29156 conditions, 4181 events. 985/4181 cut-off events. For 157402/157561 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 49985 event pairs. 1/4109 useless extension candidates. Maximal degree in co-relation 28803. Up to 915 conditions per place. [2020-01-16 21:19:34,083 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 137 selfloop transitions, 302 changer transitions [2020-01-16 21:19:34,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:19:34,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:19:34,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:19:34,084 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:19:34,084 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:19:34,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:19:34,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:19:34,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:19:34,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:19:34,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:19:34,088 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:19:34,088 INFO L174 Difference]: Start difference. First operand has 200 places, 390 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:19:34,094 INFO L199 Difference]: Finished difference. Result has 210 places, 392 transitions [2020-01-16 21:19:34,095 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=12265, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=299, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13183, PETRI_PLACES=210, PETRI_TRANSITIONS=392} [2020-01-16 21:19:34,095 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 210 places, 392 transitions [2020-01-16 21:19:34,095 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 210 places, 392 transitions [2020-01-16 21:19:36,330 INFO L129 PetriNetUnfolder]: 269/2709 cut-off events. [2020-01-16 21:19:36,331 INFO L130 PetriNetUnfolder]: For 116883/117081 co-relation queries the response was YES. [2020-01-16 21:19:36,362 INFO L76 FinitePrefix]: Finished finitePrefix Result has 17040 conditions, 2709 events. 269/2709 cut-off events. For 116883/117081 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 36398 event pairs. 10/2490 useless extension candidates. Maximal degree in co-relation 16689. Up to 271 conditions per place. [2020-01-16 21:19:36,365 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 210 places, 0 of 392 transitions, 270 of 13183 flow. [2020-01-16 21:19:36,366 INFO L478 AbstractCegarLoop]: Abstraction has has 209 places, 392 transitions [2020-01-16 21:19:36,366 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:19:38,363 INFO L129 PetriNetUnfolder]: 269/2451 cut-off events. [2020-01-16 21:19:38,364 INFO L130 PetriNetUnfolder]: For 116869/117044 co-relation queries the response was YES. [2020-01-16 21:19:38,364 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:19:38,364 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:19:38,364 INFO L426 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:19:38,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:19:38,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1798160404, now seen corresponding path program 13 times [2020-01-16 21:19:38,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:19:38,365 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645790819] [2020-01-16 21:19:38,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:19:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:19:38,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:19:38,688 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645790819] [2020-01-16 21:19:38,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:19:38,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:19:38,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543701290] [2020-01-16 21:19:38,688 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:19:38,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:19:38,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:19:38,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:19:38,690 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:19:38,690 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 392 transitions. Second operand 9 states. [2020-01-16 21:19:38,690 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:19:38,690 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:19:38,691 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:19:47,106 INFO L129 PetriNetUnfolder]: 985/4183 cut-off events. [2020-01-16 21:19:47,106 INFO L130 PetriNetUnfolder]: For 178016/178175 co-relation queries the response was YES. [2020-01-16 21:19:47,158 INFO L76 FinitePrefix]: Finished finitePrefix Result has 29941 conditions, 4183 events. 985/4183 cut-off events. For 178016/178175 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 50051 event pairs. 1/4111 useless extension candidates. Maximal degree in co-relation 29578. Up to 915 conditions per place. [2020-01-16 21:19:47,162 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 135 selfloop transitions, 303 changer transitions [2020-01-16 21:19:47,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:19:47,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:19:47,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:19:47,164 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:19:47,164 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:19:47,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:19:47,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:19:47,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:19:47,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:19:47,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:19:47,167 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:19:47,167 INFO L174 Difference]: Start difference. First operand has 209 places, 392 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:19:47,173 INFO L199 Difference]: Finished difference. Result has 219 places, 393 transitions [2020-01-16 21:19:47,174 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=12913, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13847, PETRI_PLACES=219, PETRI_TRANSITIONS=393} [2020-01-16 21:19:47,174 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 219 places, 393 transitions [2020-01-16 21:19:47,174 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 219 places, 393 transitions [2020-01-16 21:19:50,713 INFO L129 PetriNetUnfolder]: 269/2708 cut-off events. [2020-01-16 21:19:50,713 INFO L130 PetriNetUnfolder]: For 134955/135130 co-relation queries the response was YES. [2020-01-16 21:19:50,751 INFO L76 FinitePrefix]: Finished finitePrefix Result has 17515 conditions, 2708 events. 269/2708 cut-off events. For 134955/135130 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 36399 event pairs. 8/2492 useless extension candidates. Maximal degree in co-relation 17154. Up to 271 conditions per place. [2020-01-16 21:19:50,755 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 219 places, 0 of 393 transitions, 270 of 13847 flow. [2020-01-16 21:19:50,755 INFO L478 AbstractCegarLoop]: Abstraction has has 218 places, 393 transitions [2020-01-16 21:19:50,755 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:19:52,866 INFO L129 PetriNetUnfolder]: 269/2451 cut-off events. [2020-01-16 21:19:52,866 INFO L130 PetriNetUnfolder]: For 134845/135019 co-relation queries the response was YES. [2020-01-16 21:19:52,866 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:19:52,866 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:19:52,866 INFO L426 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:19:52,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:19:52,867 INFO L82 PathProgramCache]: Analyzing trace with hash 799454316, now seen corresponding path program 14 times [2020-01-16 21:19:52,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:19:52,867 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77894862] [2020-01-16 21:19:52,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:19:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:19:53,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:19:53,203 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77894862] [2020-01-16 21:19:53,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:19:53,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:19:53,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403455468] [2020-01-16 21:19:53,204 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:19:53,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:19:53,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:19:53,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:19:53,205 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:19:53,205 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 393 transitions. Second operand 9 states. [2020-01-16 21:19:53,205 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:19:53,205 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:19:53,205 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:20:01,003 INFO L129 PetriNetUnfolder]: 993/4359 cut-off events. [2020-01-16 21:20:01,003 INFO L130 PetriNetUnfolder]: For 209663/209822 co-relation queries the response was YES. [2020-01-16 21:20:01,060 INFO L76 FinitePrefix]: Finished finitePrefix Result has 31901 conditions, 4359 events. 993/4359 cut-off events. For 209663/209822 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 53083 event pairs. 1/4287 useless extension candidates. Maximal degree in co-relation 31528. Up to 915 conditions per place. [2020-01-16 21:20:01,063 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 137 selfloop transitions, 326 changer transitions [2020-01-16 21:20:01,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:20:01,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:20:01,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:20:01,065 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:20:01,065 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:20:01,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:20:01,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:20:01,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:20:01,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:20:01,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:20:01,066 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:20:01,066 INFO L174 Difference]: Start difference. First operand has 218 places, 393 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:20:01,073 INFO L199 Difference]: Finished difference. Result has 231 places, 417 transitions [2020-01-16 21:20:01,073 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=13577, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15521, PETRI_PLACES=231, PETRI_TRANSITIONS=417} [2020-01-16 21:20:01,074 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 231 places, 417 transitions [2020-01-16 21:20:01,074 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 231 places, 417 transitions [2020-01-16 21:20:04,792 INFO L129 PetriNetUnfolder]: 285/2889 cut-off events. [2020-01-16 21:20:04,792 INFO L130 PetriNetUnfolder]: For 164875/165055 co-relation queries the response was YES. [2020-01-16 21:20:04,830 INFO L76 FinitePrefix]: Finished finitePrefix Result has 19389 conditions, 2889 events. 285/2889 cut-off events. For 164875/165055 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 39338 event pairs. 8/2673 useless extension candidates. Maximal degree in co-relation 19015. Up to 287 conditions per place. [2020-01-16 21:20:04,835 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 231 places, 0 of 417 transitions, 286 of 15521 flow. [2020-01-16 21:20:04,835 INFO L478 AbstractCegarLoop]: Abstraction has has 230 places, 417 transitions [2020-01-16 21:20:04,835 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:20:07,439 INFO L129 PetriNetUnfolder]: 285/2617 cut-off events. [2020-01-16 21:20:07,440 INFO L130 PetriNetUnfolder]: For 165038/165227 co-relation queries the response was YES. [2020-01-16 21:20:07,440 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:20:07,440 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:20:07,440 INFO L426 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:20:07,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:20:07,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1855562630, now seen corresponding path program 15 times [2020-01-16 21:20:07,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:20:07,441 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631307794] [2020-01-16 21:20:07,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:20:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:20:07,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:20:07,834 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631307794] [2020-01-16 21:20:07,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:20:07,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:20:07,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788347637] [2020-01-16 21:20:07,835 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:20:07,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:20:07,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:20:07,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:20:07,837 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:20:07,837 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 417 transitions. Second operand 9 states. [2020-01-16 21:20:07,837 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:20:07,837 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:20:07,837 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:20:18,581 INFO L129 PetriNetUnfolder]: 1102/5035 cut-off events. [2020-01-16 21:20:18,582 INFO L130 PetriNetUnfolder]: For 274889/275048 co-relation queries the response was YES. [2020-01-16 21:20:18,650 INFO L76 FinitePrefix]: Finished finitePrefix Result has 37929 conditions, 5035 events. 1102/5035 cut-off events. For 274889/275048 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 63738 event pairs. 1/4953 useless extension candidates. Maximal degree in co-relation 37543. Up to 1094 conditions per place. [2020-01-16 21:20:18,653 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 163 selfloop transitions, 378 changer transitions [2020-01-16 21:20:18,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:20:18,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:20:18,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:20:18,655 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:20:18,655 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:20:18,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:20:18,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:20:18,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:20:18,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:20:18,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:20:18,658 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:20:18,658 INFO L174 Difference]: Start difference. First operand has 230 places, 417 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:20:18,664 INFO L199 Difference]: Finished difference. Result has 245 places, 486 transitions [2020-01-16 21:20:18,665 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=15235, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19481, PETRI_PLACES=245, PETRI_TRANSITIONS=486} [2020-01-16 21:20:18,665 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 245 places, 486 transitions [2020-01-16 21:20:18,665 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 245 places, 486 transitions [2020-01-16 21:20:24,166 INFO L129 PetriNetUnfolder]: 337/3451 cut-off events. [2020-01-16 21:20:24,166 INFO L130 PetriNetUnfolder]: For 225435/225624 co-relation queries the response was YES. [2020-01-16 21:20:24,218 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24299 conditions, 3451 events. 337/3451 cut-off events. For 225435/225624 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 48808 event pairs. 11/3214 useless extension candidates. Maximal degree in co-relation 23898. Up to 339 conditions per place. [2020-01-16 21:20:24,223 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 245 places, 0 of 486 transitions, 0 of 19481 flow. [2020-01-16 21:20:24,223 INFO L478 AbstractCegarLoop]: Abstraction has has 245 places, 486 transitions [2020-01-16 21:20:24,223 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:20:27,175 INFO L129 PetriNetUnfolder]: 337/3128 cut-off events. [2020-01-16 21:20:27,175 INFO L130 PetriNetUnfolder]: For 225396/225577 co-relation queries the response was YES. [2020-01-16 21:20:27,175 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:20:27,176 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:20:27,176 INFO L426 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:20:27,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:20:27,176 INFO L82 PathProgramCache]: Analyzing trace with hash -154554770, now seen corresponding path program 16 times [2020-01-16 21:20:27,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:20:27,176 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994933884] [2020-01-16 21:20:27,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:20:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:20:27,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:20:27,507 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994933884] [2020-01-16 21:20:27,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:20:27,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:20:27,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731140270] [2020-01-16 21:20:27,508 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:20:27,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:20:27,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:20:27,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:20:27,509 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:20:27,510 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 486 transitions. Second operand 9 states. [2020-01-16 21:20:27,510 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:20:27,510 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:20:27,510 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:20:42,118 INFO L129 PetriNetUnfolder]: 1158/5836 cut-off events. [2020-01-16 21:20:42,118 INFO L130 PetriNetUnfolder]: For 359961/360181 co-relation queries the response was YES. [2020-01-16 21:20:42,198 INFO L76 FinitePrefix]: Finished finitePrefix Result has 45015 conditions, 5836 events. 1158/5836 cut-off events. For 359961/360181 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 78014 event pairs. 3/5760 useless extension candidates. Maximal degree in co-relation 44542. Up to 1300 conditions per place. [2020-01-16 21:20:42,202 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 161 selfloop transitions, 426 changer transitions [2020-01-16 21:20:42,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:20:42,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:20:42,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:20:42,204 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:20:42,204 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:20:42,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:20:42,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:20:42,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:20:42,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:20:42,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:20:42,207 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:20:42,207 INFO L174 Difference]: Start difference. First operand has 245 places, 486 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:20:42,216 INFO L199 Difference]: Finished difference. Result has 259 places, 558 transitions [2020-01-16 21:20:42,217 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=19481, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=353, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24029, PETRI_PLACES=259, PETRI_TRANSITIONS=558} [2020-01-16 21:20:42,217 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 259 places, 558 transitions [2020-01-16 21:20:42,217 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 259 places, 558 transitions [2020-01-16 21:20:49,537 INFO L129 PetriNetUnfolder]: 396/4103 cut-off events. [2020-01-16 21:20:49,537 INFO L130 PetriNetUnfolder]: For 302823/302961 co-relation queries the response was YES. [2020-01-16 21:20:49,594 INFO L76 FinitePrefix]: Finished finitePrefix Result has 30343 conditions, 4103 events. 396/4103 cut-off events. For 302823/302961 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 59985 event pairs. 9/3819 useless extension candidates. Maximal degree in co-relation 29860. Up to 398 conditions per place. [2020-01-16 21:20:49,601 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 259 places, 0 of 558 transitions, 397 of 24029 flow. [2020-01-16 21:20:49,601 INFO L478 AbstractCegarLoop]: Abstraction has has 258 places, 558 transitions [2020-01-16 21:20:49,601 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:20:54,611 INFO L129 PetriNetUnfolder]: 396/3721 cut-off events. [2020-01-16 21:20:54,611 INFO L130 PetriNetUnfolder]: For 303024/303176 co-relation queries the response was YES. [2020-01-16 21:20:54,612 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:20:54,612 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:20:54,612 INFO L426 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:20:54,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:20:54,612 INFO L82 PathProgramCache]: Analyzing trace with hash -2016228982, now seen corresponding path program 17 times [2020-01-16 21:20:54,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:20:54,612 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001113962] [2020-01-16 21:20:54,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:20:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:20:54,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:20:54,963 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001113962] [2020-01-16 21:20:54,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:20:54,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:20:54,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043372158] [2020-01-16 21:20:54,963 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:20:54,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:20:54,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:20:54,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:20:54,964 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:20:54,965 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 558 transitions. Second operand 9 states. [2020-01-16 21:20:54,965 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:20:54,965 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:20:54,965 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:21:10,189 INFO L129 PetriNetUnfolder]: 1158/5682 cut-off events. [2020-01-16 21:21:10,189 INFO L130 PetriNetUnfolder]: For 403765/404131 co-relation queries the response was YES. [2020-01-16 21:21:10,268 INFO L76 FinitePrefix]: Finished finitePrefix Result has 46234 conditions, 5682 events. 1158/5682 cut-off events. For 403765/404131 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 75139 event pairs. 2/5587 useless extension candidates. Maximal degree in co-relation 45737. Up to 1416 conditions per place. [2020-01-16 21:21:10,272 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 207 selfloop transitions, 440 changer transitions [2020-01-16 21:21:10,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:21:10,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:21:10,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:21:10,274 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:21:10,274 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:21:10,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:21:10,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:21:10,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:21:10,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:21:10,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:21:10,277 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:21:10,277 INFO L174 Difference]: Start difference. First operand has 258 places, 558 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:21:10,285 INFO L199 Difference]: Finished difference. Result has 273 places, 573 transitions [2020-01-16 21:21:10,286 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=23632, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=424, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25863, PETRI_PLACES=273, PETRI_TRANSITIONS=573} [2020-01-16 21:21:10,286 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 273 places, 573 transitions [2020-01-16 21:21:10,286 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 273 places, 573 transitions [2020-01-16 21:21:20,056 INFO L129 PetriNetUnfolder]: 396/4102 cut-off events. [2020-01-16 21:21:20,056 INFO L130 PetriNetUnfolder]: For 341114/341276 co-relation queries the response was YES. [2020-01-16 21:21:20,115 INFO L76 FinitePrefix]: Finished finitePrefix Result has 31626 conditions, 4102 events. 396/4102 cut-off events. For 341114/341276 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 59906 event pairs. 14/3817 useless extension candidates. Maximal degree in co-relation 31112. Up to 398 conditions per place. [2020-01-16 21:21:20,124 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 273 places, 0 of 573 transitions, 397 of 25863 flow. [2020-01-16 21:21:20,124 INFO L478 AbstractCegarLoop]: Abstraction has has 272 places, 573 transitions [2020-01-16 21:21:20,124 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:21:25,080 INFO L129 PetriNetUnfolder]: 396/3722 cut-off events. [2020-01-16 21:21:25,081 INFO L130 PetriNetUnfolder]: For 340971/341124 co-relation queries the response was YES. [2020-01-16 21:21:25,081 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:21:25,081 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:21:25,081 INFO L426 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:21:25,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:21:25,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1557468696, now seen corresponding path program 18 times [2020-01-16 21:21:25,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:21:25,082 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419360988] [2020-01-16 21:21:25,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:21:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:21:25,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:21:25,409 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419360988] [2020-01-16 21:21:25,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:21:25,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:21:25,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968381337] [2020-01-16 21:21:25,410 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:21:25,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:21:25,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:21:25,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:21:25,411 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:21:25,411 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 573 transitions. Second operand 9 states. [2020-01-16 21:21:25,411 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:21:25,411 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:21:25,412 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:21:42,919 INFO L129 PetriNetUnfolder]: 1158/5665 cut-off events. [2020-01-16 21:21:42,919 INFO L130 PetriNetUnfolder]: For 455402/455696 co-relation queries the response was YES. [2020-01-16 21:21:43,010 INFO L76 FinitePrefix]: Finished finitePrefix Result has 48075 conditions, 5665 events. 1158/5665 cut-off events. For 455402/455696 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 74890 event pairs. 2/5578 useless extension candidates. Maximal degree in co-relation 47547. Up to 1114 conditions per place. [2020-01-16 21:21:43,015 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 195 selfloop transitions, 453 changer transitions [2020-01-16 21:21:43,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:21:43,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:21:43,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:21:43,017 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:21:43,017 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:21:43,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:21:43,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:21:43,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:21:43,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:21:43,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:21:43,020 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:21:43,020 INFO L174 Difference]: Start difference. First operand has 272 places, 573 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:21:43,031 INFO L199 Difference]: Finished difference. Result has 286 places, 586 transitions [2020-01-16 21:21:43,032 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=25466, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=439, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=27503, PETRI_PLACES=286, PETRI_TRANSITIONS=586} [2020-01-16 21:21:43,032 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 286 places, 586 transitions [2020-01-16 21:21:43,032 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 286 places, 586 transitions [2020-01-16 21:21:51,200 INFO L129 PetriNetUnfolder]: 396/4101 cut-off events. [2020-01-16 21:21:51,200 INFO L130 PetriNetUnfolder]: For 382194/382385 co-relation queries the response was YES. [2020-01-16 21:21:51,258 INFO L76 FinitePrefix]: Finished finitePrefix Result has 32730 conditions, 4101 events. 396/4101 cut-off events. For 382194/382385 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 59884 event pairs. 12/3830 useless extension candidates. Maximal degree in co-relation 32192. Up to 398 conditions per place. [2020-01-16 21:21:51,265 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 286 places, 0 of 586 transitions, 397 of 27503 flow. [2020-01-16 21:21:51,266 INFO L478 AbstractCegarLoop]: Abstraction has has 285 places, 586 transitions [2020-01-16 21:21:51,266 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:21:57,231 INFO L129 PetriNetUnfolder]: 396/3722 cut-off events. [2020-01-16 21:21:57,232 INFO L130 PetriNetUnfolder]: For 382178/382365 co-relation queries the response was YES. [2020-01-16 21:21:57,232 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:21:57,232 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:21:57,232 INFO L426 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:21:57,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:21:57,232 INFO L82 PathProgramCache]: Analyzing trace with hash -975181472, now seen corresponding path program 19 times [2020-01-16 21:21:57,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:21:57,233 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736709068] [2020-01-16 21:21:57,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:21:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:21:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:21:57,643 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736709068] [2020-01-16 21:21:57,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:21:57,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:21:57,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597956093] [2020-01-16 21:21:57,645 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:21:57,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:21:57,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:21:57,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:21:57,646 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:21:57,646 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 586 transitions. Second operand 9 states. [2020-01-16 21:21:57,647 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:21:57,647 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:21:57,647 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:22:15,750 INFO L129 PetriNetUnfolder]: 1166/6049 cut-off events. [2020-01-16 21:22:15,751 INFO L130 PetriNetUnfolder]: For 543903/544539 co-relation queries the response was YES. [2020-01-16 21:22:15,847 INFO L76 FinitePrefix]: Finished finitePrefix Result has 52252 conditions, 6049 events. 1166/6049 cut-off events. For 543903/544539 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 82039 event pairs. 6/5965 useless extension candidates. Maximal degree in co-relation 51700. Up to 1415 conditions per place. [2020-01-16 21:22:15,853 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 229 selfloop transitions, 493 changer transitions [2020-01-16 21:22:15,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:22:15,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:22:15,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:22:15,854 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:22:15,854 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:22:15,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:22:15,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:22:15,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:22:15,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:22:15,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:22:15,857 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:22:15,857 INFO L174 Difference]: Start difference. First operand has 285 places, 586 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:22:15,865 INFO L199 Difference]: Finished difference. Result has 298 places, 641 transitions [2020-01-16 21:22:15,865 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=27106, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=437, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=31276, PETRI_PLACES=298, PETRI_TRANSITIONS=641} [2020-01-16 21:22:15,866 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 298 places, 641 transitions [2020-01-16 21:22:15,866 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 298 places, 641 transitions [2020-01-16 21:22:26,325 INFO L129 PetriNetUnfolder]: 436/4528 cut-off events. [2020-01-16 21:22:26,325 INFO L130 PetriNetUnfolder]: For 463668/463875 co-relation queries the response was YES. [2020-01-16 21:22:26,395 INFO L76 FinitePrefix]: Finished finitePrefix Result has 36896 conditions, 4528 events. 436/4528 cut-off events. For 463668/463875 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 67222 event pairs. 28/4240 useless extension candidates. Maximal degree in co-relation 36340. Up to 438 conditions per place. [2020-01-16 21:22:26,403 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 298 places, 0 of 641 transitions, 437 of 31276 flow. [2020-01-16 21:22:26,403 INFO L478 AbstractCegarLoop]: Abstraction has has 297 places, 641 transitions [2020-01-16 21:22:26,403 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:22:33,379 INFO L129 PetriNetUnfolder]: 436/4110 cut-off events. [2020-01-16 21:22:33,379 INFO L130 PetriNetUnfolder]: For 464047/464294 co-relation queries the response was YES. [2020-01-16 21:22:33,379 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:22:33,379 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:22:33,380 INFO L426 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:22:33,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:22:33,380 INFO L82 PathProgramCache]: Analyzing trace with hash -46673006, now seen corresponding path program 20 times [2020-01-16 21:22:33,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:22:33,380 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071464759] [2020-01-16 21:22:33,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:22:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:22:33,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:22:33,729 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071464759] [2020-01-16 21:22:33,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:22:33,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:22:33,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563275109] [2020-01-16 21:22:33,730 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:22:33,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:22:33,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:22:33,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:22:33,731 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:22:33,731 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 641 transitions. Second operand 9 states. [2020-01-16 21:22:33,731 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:22:33,731 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:22:33,731 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:22:55,529 INFO L129 PetriNetUnfolder]: 1175/6278 cut-off events. [2020-01-16 21:22:55,529 INFO L130 PetriNetUnfolder]: For 618847/619125 co-relation queries the response was YES. [2020-01-16 21:22:55,633 INFO L76 FinitePrefix]: Finished finitePrefix Result has 55513 conditions, 6278 events. 1175/6278 cut-off events. For 618847/619125 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 86211 event pairs. 6/6197 useless extension candidates. Maximal degree in co-relation 54943. Up to 1327 conditions per place. [2020-01-16 21:22:55,639 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 196 selfloop transitions, 492 changer transitions [2020-01-16 21:22:55,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:22:55,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:22:55,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:22:55,640 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:22:55,640 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:22:55,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:22:55,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:22:55,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:22:55,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:22:55,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:22:55,643 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:22:55,644 INFO L174 Difference]: Start difference. First operand has 297 places, 641 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:22:55,656 INFO L199 Difference]: Finished difference. Result has 310 places, 667 transitions [2020-01-16 21:22:55,657 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=30839, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=465, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=33693, PETRI_PLACES=310, PETRI_TRANSITIONS=667} [2020-01-16 21:22:55,657 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 310 places, 667 transitions [2020-01-16 21:22:55,657 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 310 places, 667 transitions [2020-01-16 21:23:07,320 INFO L129 PetriNetUnfolder]: 455/4743 cut-off events. [2020-01-16 21:23:07,321 INFO L130 PetriNetUnfolder]: For 533262/533514 co-relation queries the response was YES. [2020-01-16 21:23:07,394 INFO L76 FinitePrefix]: Finished finitePrefix Result has 39472 conditions, 4743 events. 455/4743 cut-off events. For 533262/533514 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 70933 event pairs. 21/4454 useless extension candidates. Maximal degree in co-relation 38896. Up to 457 conditions per place. [2020-01-16 21:23:07,402 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 310 places, 0 of 667 transitions, 456 of 33693 flow. [2020-01-16 21:23:07,402 INFO L478 AbstractCegarLoop]: Abstraction has has 309 places, 667 transitions [2020-01-16 21:23:07,402 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:23:13,837 INFO L129 PetriNetUnfolder]: 455/4307 cut-off events. [2020-01-16 21:23:13,838 INFO L130 PetriNetUnfolder]: For 533175/533391 co-relation queries the response was YES. [2020-01-16 21:23:13,838 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:23:13,838 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:23:13,838 INFO L426 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:23:13,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:23:13,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1801317928, now seen corresponding path program 21 times [2020-01-16 21:23:13,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:23:13,839 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145685350] [2020-01-16 21:23:13,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:23:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:23:14,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:23:14,134 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145685350] [2020-01-16 21:23:14,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:23:14,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:23:14,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566831594] [2020-01-16 21:23:14,135 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:23:14,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:23:14,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:23:14,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:23:14,136 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:23:14,137 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 667 transitions. Second operand 9 states. [2020-01-16 21:23:14,137 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:23:14,137 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:23:14,137 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:23:37,733 INFO L129 PetriNetUnfolder]: 1176/6504 cut-off events. [2020-01-16 21:23:37,733 INFO L130 PetriNetUnfolder]: For 686036/686314 co-relation queries the response was YES. [2020-01-16 21:23:37,848 INFO L76 FinitePrefix]: Finished finitePrefix Result has 57553 conditions, 6504 events. 1176/6504 cut-off events. For 686036/686314 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 90608 event pairs. 6/6431 useless extension candidates. Maximal degree in co-relation 56943. Up to 1077 conditions per place. [2020-01-16 21:23:37,854 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 156 selfloop transitions, 573 changer transitions [2020-01-16 21:23:37,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:23:37,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:23:37,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:23:37,855 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:23:37,855 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:23:37,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:23:37,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:23:37,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:23:37,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:23:37,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:23:37,857 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:23:37,857 INFO L174 Difference]: Start difference. First operand has 309 places, 667 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:23:37,868 INFO L199 Difference]: Finished difference. Result has 321 places, 683 transitions [2020-01-16 21:23:37,868 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=33237, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=556, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=35811, PETRI_PLACES=321, PETRI_TRANSITIONS=683} [2020-01-16 21:23:37,869 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 321 places, 683 transitions [2020-01-16 21:23:37,869 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 321 places, 683 transitions [2020-01-16 21:23:49,907 INFO L129 PetriNetUnfolder]: 463/4825 cut-off events. [2020-01-16 21:23:49,908 INFO L130 PetriNetUnfolder]: For 598972/599226 co-relation queries the response was YES. [2020-01-16 21:23:49,990 INFO L76 FinitePrefix]: Finished finitePrefix Result has 41358 conditions, 4825 events. 463/4825 cut-off events. For 598972/599226 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 72405 event pairs. 20/4537 useless extension candidates. Maximal degree in co-relation 40850. Up to 465 conditions per place. [2020-01-16 21:23:50,001 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 321 places, 0 of 683 transitions, 464 of 35811 flow. [2020-01-16 21:23:50,001 INFO L478 AbstractCegarLoop]: Abstraction has has 320 places, 683 transitions [2020-01-16 21:23:50,001 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:23:57,193 INFO L129 PetriNetUnfolder]: 463/4381 cut-off events. [2020-01-16 21:23:57,193 INFO L130 PetriNetUnfolder]: For 599029/599291 co-relation queries the response was YES. [2020-01-16 21:23:57,193 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:23:57,193 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:23:57,193 INFO L426 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:23:57,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:23:57,193 INFO L82 PathProgramCache]: Analyzing trace with hash 596783046, now seen corresponding path program 22 times [2020-01-16 21:23:57,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:23:57,194 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527197306] [2020-01-16 21:23:57,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:23:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:23:57,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:23:57,537 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527197306] [2020-01-16 21:23:57,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:23:57,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:23:57,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658060292] [2020-01-16 21:23:57,537 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:23:57,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:23:57,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:23:57,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:23:57,538 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:23:57,539 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 683 transitions. Second operand 9 states. [2020-01-16 21:23:57,539 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:23:57,539 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:23:57,539 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:24:22,330 INFO L129 PetriNetUnfolder]: 1176/6391 cut-off events. [2020-01-16 21:24:22,330 INFO L130 PetriNetUnfolder]: For 741055/741241 co-relation queries the response was YES. [2020-01-16 21:24:22,446 INFO L76 FinitePrefix]: Finished finitePrefix Result has 58739 conditions, 6391 events. 1176/6391 cut-off events. For 741055/741241 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 88291 event pairs. 1/6317 useless extension candidates. Maximal degree in co-relation 58220. Up to 1490 conditions per place. [2020-01-16 21:24:22,452 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 211 selfloop transitions, 504 changer transitions [2020-01-16 21:24:22,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:24:22,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:24:22,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:24:22,453 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:24:22,453 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:24:22,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:24:22,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:24:22,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:24:22,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:24:22,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:24:22,455 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:24:22,455 INFO L174 Difference]: Start difference. First operand has 320 places, 683 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:24:22,465 INFO L199 Difference]: Finished difference. Result has 333 places, 694 transitions [2020-01-16 21:24:22,465 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=35347, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=492, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=37339, PETRI_PLACES=333, PETRI_TRANSITIONS=694} [2020-01-16 21:24:22,466 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 333 places, 694 transitions [2020-01-16 21:24:22,466 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 333 places, 694 transitions [2020-01-16 21:24:34,529 INFO L129 PetriNetUnfolder]: 463/4824 cut-off events. [2020-01-16 21:24:34,529 INFO L130 PetriNetUnfolder]: For 653468/653734 co-relation queries the response was YES. [2020-01-16 21:24:34,610 INFO L76 FinitePrefix]: Finished finitePrefix Result has 42278 conditions, 4824 events. 463/4824 cut-off events. For 653468/653734 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 72311 event pairs. 22/4536 useless extension candidates. Maximal degree in co-relation 41785. Up to 465 conditions per place. [2020-01-16 21:24:34,619 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 333 places, 0 of 694 transitions, 464 of 37339 flow. [2020-01-16 21:24:34,619 INFO L478 AbstractCegarLoop]: Abstraction has has 332 places, 694 transitions [2020-01-16 21:24:34,619 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:24:41,710 INFO L129 PetriNetUnfolder]: 463/4382 cut-off events. [2020-01-16 21:24:41,711 INFO L130 PetriNetUnfolder]: For 653981/654279 co-relation queries the response was YES. [2020-01-16 21:24:41,711 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:24:41,711 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:24:41,711 INFO L426 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:24:41,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:24:41,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1972933678, now seen corresponding path program 23 times [2020-01-16 21:24:41,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:24:41,712 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12227259] [2020-01-16 21:24:41,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:24:41,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:24:42,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:24:42,010 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12227259] [2020-01-16 21:24:42,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:24:42,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:24:42,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146213681] [2020-01-16 21:24:42,011 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:24:42,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:24:42,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:24:42,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:24:42,013 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:24:42,013 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 694 transitions. Second operand 9 states. [2020-01-16 21:24:42,013 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:24:42,013 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:24:42,013 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:25:15,212 INFO L129 PetriNetUnfolder]: 1221/7314 cut-off events. [2020-01-16 21:25:15,213 INFO L130 PetriNetUnfolder]: For 938065/938251 co-relation queries the response was YES. [2020-01-16 21:25:15,351 INFO L76 FinitePrefix]: Finished finitePrefix Result has 67709 conditions, 7314 events. 1221/7314 cut-off events. For 938065/938251 co-relation queries the response was YES. Maximal size of possible extension queue 863. Compared 105805 event pairs. 1/7238 useless extension candidates. Maximal degree in co-relation 67180. Up to 1138 conditions per place. [2020-01-16 21:25:15,358 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 224 selfloop transitions, 660 changer transitions [2020-01-16 21:25:15,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:25:15,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:25:15,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:25:15,359 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:25:15,359 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:25:15,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:25:15,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:25:15,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:25:15,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:25:15,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:25:15,363 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:25:15,363 INFO L174 Difference]: Start difference. First operand has 332 places, 694 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:25:15,375 INFO L199 Difference]: Finished difference. Result has 346 places, 803 transitions [2020-01-16 21:25:15,376 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=36875, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=550, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=45841, PETRI_PLACES=346, PETRI_TRANSITIONS=803} [2020-01-16 21:25:15,376 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 346 places, 803 transitions [2020-01-16 21:25:15,376 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 346 places, 803 transitions [2020-01-16 21:25:33,560 INFO L129 PetriNetUnfolder]: 555/5826 cut-off events. [2020-01-16 21:25:33,561 INFO L130 PetriNetUnfolder]: For 863289/863685 co-relation queries the response was YES. [2020-01-16 21:25:33,662 INFO L76 FinitePrefix]: Finished finitePrefix Result has 52575 conditions, 5826 events. 555/5826 cut-off events. For 863289/863685 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 90275 event pairs. 42/5511 useless extension candidates. Maximal degree in co-relation 52037. Up to 557 conditions per place. [2020-01-16 21:25:33,677 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 346 places, 0 of 803 transitions, 556 of 45841 flow. [2020-01-16 21:25:33,677 INFO L478 AbstractCegarLoop]: Abstraction has has 345 places, 803 transitions [2020-01-16 21:25:33,677 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:25:44,794 INFO L129 PetriNetUnfolder]: 555/5293 cut-off events. [2020-01-16 21:25:44,795 INFO L130 PetriNetUnfolder]: For 864998/865400 co-relation queries the response was YES. [2020-01-16 21:25:44,795 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:25:44,795 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:25:44,795 INFO L426 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:25:44,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:25:44,796 INFO L82 PathProgramCache]: Analyzing trace with hash 334457508, now seen corresponding path program 24 times [2020-01-16 21:25:44,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:25:44,796 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876046516] [2020-01-16 21:25:44,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:25:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:25:45,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:25:45,168 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876046516] [2020-01-16 21:25:45,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:25:45,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:25:45,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642617303] [2020-01-16 21:25:45,169 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:25:45,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:25:45,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:25:45,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:25:45,170 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:25:45,170 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 803 transitions. Second operand 9 states. [2020-01-16 21:25:45,171 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:25:45,171 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:25:45,171 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:26:21,360 INFO L129 PetriNetUnfolder]: 1221/7284 cut-off events. [2020-01-16 21:26:21,360 INFO L130 PetriNetUnfolder]: For 1022938/1023344 co-relation queries the response was YES. [2020-01-16 21:26:21,501 INFO L76 FinitePrefix]: Finished finitePrefix Result has 70089 conditions, 7284 events. 1221/7284 cut-off events. For 1022938/1023344 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 105298 event pairs. 3/7204 useless extension candidates. Maximal degree in co-relation 69540. Up to 1799 conditions per place. [2020-01-16 21:26:21,509 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 236 selfloop transitions, 635 changer transitions [2020-01-16 21:26:21,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:26:21,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:26:21,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:26:21,511 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:26:21,511 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:26:21,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:26:21,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:26:21,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:26:21,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:26:21,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:26:21,513 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:26:21,513 INFO L174 Difference]: Start difference. First operand has 345 places, 803 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:26:21,526 INFO L199 Difference]: Finished difference. Result has 359 places, 827 transitions [2020-01-16 21:26:21,526 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=45285, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=803, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=610, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48552, PETRI_PLACES=359, PETRI_TRANSITIONS=827} [2020-01-16 21:26:21,527 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 359 places, 827 transitions [2020-01-16 21:26:21,527 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 359 places, 827 transitions [2020-01-16 21:26:38,961 INFO L129 PetriNetUnfolder]: 555/5825 cut-off events. [2020-01-16 21:26:38,961 INFO L130 PetriNetUnfolder]: For 938995/939407 co-relation queries the response was YES. [2020-01-16 21:26:39,072 INFO L76 FinitePrefix]: Finished finitePrefix Result has 54323 conditions, 5825 events. 555/5825 cut-off events. For 938995/939407 co-relation queries the response was YES. Maximal size of possible extension queue 732. Compared 90420 event pairs. 71/5566 useless extension candidates. Maximal degree in co-relation 53766. Up to 557 conditions per place. [2020-01-16 21:26:39,084 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 359 places, 0 of 827 transitions, 556 of 48552 flow. [2020-01-16 21:26:39,084 INFO L478 AbstractCegarLoop]: Abstraction has has 358 places, 827 transitions [2020-01-16 21:26:39,084 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:26:50,460 INFO L129 PetriNetUnfolder]: 555/5293 cut-off events. [2020-01-16 21:26:50,461 INFO L130 PetriNetUnfolder]: For 938995/939406 co-relation queries the response was YES. [2020-01-16 21:26:50,461 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:26:50,461 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:26:50,461 INFO L426 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:26:50,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:26:50,461 INFO L82 PathProgramCache]: Analyzing trace with hash -883340076, now seen corresponding path program 25 times [2020-01-16 21:26:50,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:26:50,462 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045655744] [2020-01-16 21:26:50,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:26:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:26:50,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:26:50,830 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045655744] [2020-01-16 21:26:50,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:26:50,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:26:50,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425854506] [2020-01-16 21:26:50,830 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:26:50,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:26:50,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:26:50,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:26:50,831 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:26:50,832 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 827 transitions. Second operand 9 states. [2020-01-16 21:26:50,832 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:26:50,832 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:26:50,832 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:27:29,239 INFO L129 PetriNetUnfolder]: 1228/7404 cut-off events. [2020-01-16 21:27:29,240 INFO L130 PetriNetUnfolder]: For 1139623/1139882 co-relation queries the response was YES. [2020-01-16 21:27:29,402 INFO L76 FinitePrefix]: Finished finitePrefix Result has 73690 conditions, 7404 events. 1228/7404 cut-off events. For 1139623/1139882 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 107604 event pairs. 2/7320 useless extension candidates. Maximal degree in co-relation 73122. Up to 1137 conditions per place. [2020-01-16 21:27:29,410 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 258 selfloop transitions, 662 changer transitions [2020-01-16 21:27:29,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:27:29,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:27:29,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:27:29,411 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:27:29,412 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:27:29,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:27:29,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:27:29,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:27:29,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:27:29,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:27:29,413 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:27:29,413 INFO L174 Difference]: Start difference. First operand has 358 places, 827 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:27:29,426 INFO L199 Difference]: Finished difference. Result has 371 places, 857 transitions [2020-01-16 21:27:29,427 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=47996, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=827, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=631, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=51779, PETRI_PLACES=371, PETRI_TRANSITIONS=857} [2020-01-16 21:27:29,427 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 371 places, 857 transitions [2020-01-16 21:27:29,427 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 371 places, 857 transitions [2020-01-16 21:27:49,275 INFO L129 PetriNetUnfolder]: 572/6005 cut-off events. [2020-01-16 21:27:49,276 INFO L130 PetriNetUnfolder]: For 1048894/1049335 co-relation queries the response was YES. [2020-01-16 21:27:49,390 INFO L76 FinitePrefix]: Finished finitePrefix Result has 57413 conditions, 6005 events. 572/6005 cut-off events. For 1048894/1049335 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 93799 event pairs. 78/5748 useless extension candidates. Maximal degree in co-relation 56838. Up to 574 conditions per place. [2020-01-16 21:27:49,402 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 371 places, 0 of 857 transitions, 573 of 51779 flow. [2020-01-16 21:27:49,402 INFO L478 AbstractCegarLoop]: Abstraction has has 370 places, 857 transitions [2020-01-16 21:27:49,403 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:28:02,812 INFO L129 PetriNetUnfolder]: 572/5457 cut-off events. [2020-01-16 21:28:02,812 INFO L130 PetriNetUnfolder]: For 1049724/1050203 co-relation queries the response was YES. [2020-01-16 21:28:02,812 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:28:02,813 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:28:02,813 INFO L426 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:28:02,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:28:02,813 INFO L82 PathProgramCache]: Analyzing trace with hash -111964178, now seen corresponding path program 26 times [2020-01-16 21:28:02,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:28:02,813 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910538313] [2020-01-16 21:28:02,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:28:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:28:03,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:28:03,133 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910538313] [2020-01-16 21:28:03,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:28:03,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:28:03,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719769738] [2020-01-16 21:28:03,133 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:28:03,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:28:03,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:28:03,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:28:03,135 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:28:03,135 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 857 transitions. Second operand 9 states. [2020-01-16 21:28:03,135 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:28:03,135 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:28:03,135 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:28:42,596 INFO L129 PetriNetUnfolder]: 1228/7596 cut-off events. [2020-01-16 21:28:42,597 INFO L130 PetriNetUnfolder]: For 1234898/1235141 co-relation queries the response was YES. [2020-01-16 21:28:42,758 INFO L76 FinitePrefix]: Finished finitePrefix Result has 75888 conditions, 7596 events. 1228/7596 cut-off events. For 1234898/1235141 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 111485 event pairs. 6/7522 useless extension candidates. Maximal degree in co-relation 75329. Up to 1201 conditions per place. [2020-01-16 21:28:42,767 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 183 selfloop transitions, 730 changer transitions [2020-01-16 21:28:42,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:28:42,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:28:42,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:28:42,768 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:28:42,768 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:28:42,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:28:42,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:28:42,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:28:42,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:28:42,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:28:42,770 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:28:42,770 INFO L174 Difference]: Start difference. First operand has 370 places, 857 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:28:42,784 INFO L199 Difference]: Finished difference. Result has 380 places, 858 transitions [2020-01-16 21:28:42,784 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=51206, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=857, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=728, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=53301, PETRI_PLACES=380, PETRI_TRANSITIONS=858} [2020-01-16 21:28:42,785 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 380 places, 858 transitions [2020-01-16 21:28:42,785 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 380 places, 858 transitions [2020-01-16 21:29:02,478 INFO L129 PetriNetUnfolder]: 572/6004 cut-off events. [2020-01-16 21:29:02,478 INFO L130 PetriNetUnfolder]: For 1128477/1128964 co-relation queries the response was YES. [2020-01-16 21:29:02,847 INFO L76 FinitePrefix]: Finished finitePrefix Result has 58553 conditions, 6004 events. 572/6004 cut-off events. For 1128477/1128964 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 93745 event pairs. 77/5748 useless extension candidates. Maximal degree in co-relation 57994. Up to 574 conditions per place. [2020-01-16 21:29:02,859 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 380 places, 0 of 858 transitions, 573 of 53301 flow. [2020-01-16 21:29:02,860 INFO L478 AbstractCegarLoop]: Abstraction has has 379 places, 858 transitions [2020-01-16 21:29:02,860 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:29:16,327 INFO L129 PetriNetUnfolder]: 572/5457 cut-off events. [2020-01-16 21:29:16,327 INFO L130 PetriNetUnfolder]: For 1127331/1127795 co-relation queries the response was YES. [2020-01-16 21:29:16,327 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:29:16,327 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:29:16,328 INFO L426 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:29:16,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:29:16,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1233096144, now seen corresponding path program 27 times [2020-01-16 21:29:16,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:29:16,328 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271503055] [2020-01-16 21:29:16,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:29:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:29:16,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:29:16,654 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271503055] [2020-01-16 21:29:16,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:29:16,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:29:16,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493555373] [2020-01-16 21:29:16,655 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:29:16,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:29:16,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:29:16,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:29:16,656 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:29:16,656 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 858 transitions. Second operand 9 states. [2020-01-16 21:29:16,656 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:29:16,656 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:29:16,656 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:29:56,079 INFO L129 PetriNetUnfolder]: 1228/7392 cut-off events. [2020-01-16 21:29:56,080 INFO L130 PetriNetUnfolder]: For 1312847/1313344 co-relation queries the response was YES. [2020-01-16 21:29:56,244 INFO L76 FinitePrefix]: Finished finitePrefix Result has 76872 conditions, 7392 events. 1228/7392 cut-off events. For 1312847/1313344 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 107269 event pairs. 6/7304 useless extension candidates. Maximal degree in co-relation 76303. Up to 1732 conditions per place. [2020-01-16 21:29:56,253 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 277 selfloop transitions, 633 changer transitions [2020-01-16 21:29:56,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:29:56,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:29:56,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:29:56,254 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:29:56,254 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:29:56,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:29:56,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:29:56,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:29:56,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:29:56,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:29:56,257 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:29:56,257 INFO L174 Difference]: Start difference. First operand has 379 places, 858 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:29:56,271 INFO L199 Difference]: Finished difference. Result has 389 places, 860 transitions [2020-01-16 21:29:56,272 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=52728, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=858, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=630, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=54646, PETRI_PLACES=389, PETRI_TRANSITIONS=860} [2020-01-16 21:29:56,272 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 389 places, 860 transitions [2020-01-16 21:29:56,272 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 389 places, 860 transitions [2020-01-16 21:30:16,930 INFO L129 PetriNetUnfolder]: 572/6003 cut-off events. [2020-01-16 21:30:16,931 INFO L130 PetriNetUnfolder]: For 1207893/1208363 co-relation queries the response was YES. [2020-01-16 21:30:17,054 INFO L76 FinitePrefix]: Finished finitePrefix Result has 59480 conditions, 6003 events. 572/6003 cut-off events. For 1207893/1208363 co-relation queries the response was YES. Maximal size of possible extension queue 752. Compared 93609 event pairs. 76/5743 useless extension candidates. Maximal degree in co-relation 58911. Up to 574 conditions per place. [2020-01-16 21:30:17,067 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 389 places, 0 of 860 transitions, 573 of 54646 flow. [2020-01-16 21:30:17,067 INFO L478 AbstractCegarLoop]: Abstraction has has 388 places, 860 transitions [2020-01-16 21:30:17,067 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:30:31,037 INFO L129 PetriNetUnfolder]: 572/5457 cut-off events. [2020-01-16 21:30:31,037 INFO L130 PetriNetUnfolder]: For 1207500/1207956 co-relation queries the response was YES. [2020-01-16 21:30:31,038 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:30:31,038 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:30:31,038 INFO L426 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:30:31,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:30:31,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1203561520, now seen corresponding path program 28 times [2020-01-16 21:30:31,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:30:31,038 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022644678] [2020-01-16 21:30:31,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:30:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:30:31,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:30:31,376 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022644678] [2020-01-16 21:30:31,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:30:31,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:30:31,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421379610] [2020-01-16 21:30:31,376 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:30:31,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:30:31,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:30:31,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:30:31,377 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:30:31,378 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 860 transitions. Second operand 9 states. [2020-01-16 21:30:31,378 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:30:31,378 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:30:31,378 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:31:12,094 INFO L129 PetriNetUnfolder]: 1228/7389 cut-off events. [2020-01-16 21:31:12,094 INFO L130 PetriNetUnfolder]: For 1401029/1401664 co-relation queries the response was YES. [2020-01-16 21:31:12,264 INFO L76 FinitePrefix]: Finished finitePrefix Result has 78079 conditions, 7389 events. 1228/7389 cut-off events. For 1401029/1401664 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 107355 event pairs. 8/7303 useless extension candidates. Maximal degree in co-relation 77500. Up to 1732 conditions per place. [2020-01-16 21:31:12,273 INFO L123 encePairwiseOnDemand]: 79/88 looper letters, 289 selfloop transitions, 639 changer transitions [2020-01-16 21:31:12,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:31:12,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-01-16 21:31:12,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 681 transitions. [2020-01-16 21:31:12,275 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8598484848484849 [2020-01-16 21:31:12,275 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 681 transitions. [2020-01-16 21:31:12,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 681 transitions. [2020-01-16 21:31:12,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:31:12,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 681 transitions. [2020-01-16 21:31:12,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-01-16 21:31:12,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-01-16 21:31:12,277 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-01-16 21:31:12,277 INFO L174 Difference]: Start difference. First operand has 388 places, 860 transitions. Second operand 9 states and 681 transitions. [2020-01-16 21:31:12,291 INFO L199 Difference]: Finished difference. Result has 398 places, 861 transitions [2020-01-16 21:31:12,292 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=54073, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=860, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=637, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=55953, PETRI_PLACES=398, PETRI_TRANSITIONS=861} [2020-01-16 21:31:12,292 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 398 places, 861 transitions [2020-01-16 21:31:12,292 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 398 places, 861 transitions [2020-01-16 21:31:33,665 INFO L129 PetriNetUnfolder]: 572/6002 cut-off events. [2020-01-16 21:31:33,665 INFO L130 PetriNetUnfolder]: For 1292682/1293144 co-relation queries the response was YES. [2020-01-16 21:31:33,789 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60428 conditions, 6002 events. 572/6002 cut-off events. For 1292682/1293144 co-relation queries the response was YES. Maximal size of possible extension queue 752. Compared 93724 event pairs. 69/5727 useless extension candidates. Maximal degree in co-relation 59849. Up to 574 conditions per place. [2020-01-16 21:31:33,802 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 398 places, 0 of 861 transitions, 573 of 55953 flow. [2020-01-16 21:31:33,803 INFO L478 AbstractCegarLoop]: Abstraction has has 397 places, 861 transitions [2020-01-16 21:31:33,803 INFO L479 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-01-16 21:31:48,299 INFO L129 PetriNetUnfolder]: 572/5457 cut-off events. [2020-01-16 21:31:48,299 INFO L130 PetriNetUnfolder]: For 1294408/1294914 co-relation queries the response was YES. [2020-01-16 21:31:48,299 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:31:48,299 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:31:48,300 INFO L426 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:31:48,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:31:48,300 INFO L82 PathProgramCache]: Analyzing trace with hash 903002468, now seen corresponding path program 29 times [2020-01-16 21:31:48,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:31:48,300 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705916609] [2020-01-16 21:31:48,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:31:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:31:48,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:31:48,616 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705916609] [2020-01-16 21:31:48,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:31:48,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 21:31:48,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105045927] [2020-01-16 21:31:48,617 INFO L458 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-01-16 21:31:48,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:31:48,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-01-16 21:31:48,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-01-16 21:31:48,618 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 88 [2020-01-16 21:31:48,619 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 861 transitions. Second operand 9 states. [2020-01-16 21:31:48,619 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:31:48,619 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 88 [2020-01-16 21:31:48,619 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2020-01-16 21:32:21,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:32:21,076 WARN L543 AbstractCegarLoop]: Verification canceled [2020-01-16 21:32:21,081 WARN L227 ceAbstractionStarter]: Timeout [2020-01-16 21:32:21,081 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.01 09:32:21 BasicIcfg [2020-01-16 21:32:21,081 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-01-16 21:32:21,083 INFO L168 Benchmark]: Toolchain (without parser) took 826804.53 ms. Allocated memory was 144.7 MB in the beginning and 3.7 GB in the end (delta: 3.5 GB). Free memory was 118.5 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2020-01-16 21:32:21,083 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-01-16 21:32:21,084 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.26 ms. Allocated memory is still 144.7 MB. Free memory was 118.3 MB in the beginning and 116.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-01-16 21:32:21,084 INFO L168 Benchmark]: Boogie Preprocessor took 19.82 ms. Allocated memory is still 144.7 MB. Free memory was 116.6 MB in the beginning and 115.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-01-16 21:32:21,085 INFO L168 Benchmark]: RCFGBuilder took 352.23 ms. Allocated memory is still 144.7 MB. Free memory was 115.5 MB in the beginning and 102.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-01-16 21:32:21,085 INFO L168 Benchmark]: TraceAbstraction took 826392.53 ms. Allocated memory was 144.7 MB in the beginning and 3.7 GB in the end (delta: 3.5 GB). Free memory was 102.5 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2020-01-16 21:32:21,088 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 35.26 ms. Allocated memory is still 144.7 MB. Free memory was 118.3 MB in the beginning and 116.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 19.82 ms. Allocated memory is still 144.7 MB. Free memory was 116.6 MB in the beginning and 115.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 352.23 ms. Allocated memory is still 144.7 MB. Free memory was 115.5 MB in the beginning and 102.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 826392.53 ms. Allocated memory was 144.7 MB in the beginning and 3.7 GB in the end (delta: 3.5 GB). Free memory was 102.5 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.5s, 60 ProgramPointsBefore, 51 ProgramPointsAfterwards, 80 TransitionsBefore, 72 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 336 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 357 CheckedPairsTotal, 8 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 27). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 71/88 universal loopers) in iteration 35,while PetriNetUnfolder was constructing finite prefix that currently has 69753 conditions, 7463 events (1275/7462 cut-off events. For 1622925/1623168 co-relation queries the response was YES. Maximal size of possible extension queue 950. Compared 111798 event pairs. 6/7888 useless extension candidates. Maximal degree in co-relation 69211. Up to 1078 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. Result: TIMEOUT, OverallTime: 826.1s, OverallIterations: 35, TraceHistogramMax: 1, AutomataDifference: 459.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 814 SDtfs, 831 SDslu, 709 SDs, 0 SdLazy, 1759 SolverSat, 194 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 279 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 10.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=397occurred in iteration=34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 216.6s AutomataMinimizationTime, 34 MinimizatonAttempts, 34 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 770 NumberOfCodeBlocks, 770 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 735 ConstructedInterpolants, 0 QuantifiedInterpolants, 299859 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 35 InterpolantComputations, 35 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown