/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-NoLbe-MCR.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d9e330d [2020-02-11 01:21:25,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-02-11 01:21:25,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-02-11 01:21:25,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-02-11 01:21:25,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-02-11 01:21:25,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-02-11 01:21:25,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-02-11 01:21:25,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-02-11 01:21:25,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-02-11 01:21:25,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-02-11 01:21:25,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-02-11 01:21:25,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-02-11 01:21:25,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-02-11 01:21:25,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-02-11 01:21:25,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-02-11 01:21:25,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-02-11 01:21:25,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-02-11 01:21:25,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-02-11 01:21:25,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-02-11 01:21:25,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-02-11 01:21:25,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-02-11 01:21:25,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-02-11 01:21:25,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-02-11 01:21:25,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-02-11 01:21:25,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-02-11 01:21:25,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-02-11 01:21:25,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-02-11 01:21:25,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-02-11 01:21:25,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-02-11 01:21:25,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-02-11 01:21:25,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-02-11 01:21:25,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-02-11 01:21:25,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-02-11 01:21:25,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-02-11 01:21:25,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-02-11 01:21:25,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-02-11 01:21:25,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-02-11 01:21:25,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-02-11 01:21:25,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-02-11 01:21:25,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-02-11 01:21:25,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-02-11 01:21:25,225 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-NoLbe-MCR.epf [2020-02-11 01:21:25,254 INFO L113 SettingsManager]: Loading preferences was successful [2020-02-11 01:21:25,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-02-11 01:21:25,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-02-11 01:21:25,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-02-11 01:21:25,261 INFO L138 SettingsManager]: * Use SBE=true [2020-02-11 01:21:25,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-02-11 01:21:25,261 INFO L138 SettingsManager]: * sizeof long=4 [2020-02-11 01:21:25,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-02-11 01:21:25,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-02-11 01:21:25,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-02-11 01:21:25,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-02-11 01:21:25,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-02-11 01:21:25,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-02-11 01:21:25,263 INFO L138 SettingsManager]: * sizeof long double=12 [2020-02-11 01:21:25,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-02-11 01:21:25,264 INFO L138 SettingsManager]: * Use constant arrays=true [2020-02-11 01:21:25,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-02-11 01:21:25,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-02-11 01:21:25,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-02-11 01:21:25,265 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-02-11 01:21:25,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-02-11 01:21:25,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-02-11 01:21:25,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-02-11 01:21:25,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-02-11 01:21:25,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-02-11 01:21:25,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-02-11 01:21:25,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-02-11 01:21:25,271 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-02-11 01:21:25,271 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-02-11 01:21:25,271 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-02-11 01:21:25,271 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-02-11 01:21:25,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-02-11 01:21:25,548 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-02-11 01:21:25,565 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-02-11 01:21:25,568 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-02-11 01:21:25,570 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-02-11 01:21:25,572 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-02-11 01:21:25,573 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl [2020-02-11 01:21:25,573 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl' [2020-02-11 01:21:25,617 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-02-11 01:21:25,620 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-02-11 01:21:25,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-02-11 01:21:25,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-02-11 01:21:25,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-02-11 01:21:25,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:21:25" (1/1) ... [2020-02-11 01:21:25,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:21:25" (1/1) ... [2020-02-11 01:21:25,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-02-11 01:21:25,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-02-11 01:21:25,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-02-11 01:21:25,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-02-11 01:21:25,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:21:25" (1/1) ... [2020-02-11 01:21:25,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:21:25" (1/1) ... [2020-02-11 01:21:25,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:21:25" (1/1) ... [2020-02-11 01:21:25,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:21:25" (1/1) ... [2020-02-11 01:21:25,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:21:25" (1/1) ... [2020-02-11 01:21:25,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:21:25" (1/1) ... [2020-02-11 01:21:25,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:21:25" (1/1) ... [2020-02-11 01:21:25,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-02-11 01:21:25,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-02-11 01:21:25,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-02-11 01:21:25,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-02-11 01:21:25,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:21:25" (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 [2020-02-11 01:21:25,764 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-02-11 01:21:25,764 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-02-11 01:21:25,765 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-02-11 01:21:25,765 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-02-11 01:21:25,765 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-02-11 01:21:25,768 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-02-11 01:21:25,769 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-02-11 01:21:25,769 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-02-11 01:21:25,769 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-02-11 01:21:25,769 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-02-11 01:21:25,769 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-02-11 01:21:25,769 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-02-11 01:21:25,770 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-02-11 01:21:25,770 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-02-11 01:21:25,770 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-02-11 01:21:25,770 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-02-11 01:21:25,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-02-11 01:21:25,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-02-11 01:21:25,771 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-02-11 01:21:25,771 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-02-11 01:21:25,771 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-02-11 01:21:25,772 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2020-02-11 01:21:25,773 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2020-02-11 01:21:25,777 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2020-02-11 01:21:25,777 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2020-02-11 01:21:25,777 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2020-02-11 01:21:25,778 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2020-02-11 01:21:25,778 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2020-02-11 01:21:25,778 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2020-02-11 01:21:25,778 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2020-02-11 01:21:25,779 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-02-11 01:21:26,036 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-02-11 01:21:26,037 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-02-11 01:21:26,041 INFO L202 PluginConnector]: Adding new model example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.02 01:21:26 BoogieIcfgContainer [2020-02-11 01:21:26,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-02-11 01:21:26,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-02-11 01:21:26,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-02-11 01:21:26,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-02-11 01:21:26,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:21:25" (1/2) ... [2020-02-11 01:21:26,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bcfe2aa and model type example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.02 01:21:26, skipping insertion in model container [2020-02-11 01:21:26,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.02 01:21:26" (2/2) ... [2020-02-11 01:21:26,049 INFO L109 eAbstractionObserver]: Analyzing ICFG example_9.bpl [2020-02-11 01:21:26,058 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-02-11 01:21:26,065 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-02-11 01:21:26,067 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-02-11 01:21:26,263 INFO L251 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-02-11 01:21:26,282 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-02-11 01:21:26,282 INFO L376 AbstractCegarLoop]: Hoare is false [2020-02-11 01:21:26,283 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-02-11 01:21:26,283 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-02-11 01:21:26,283 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-02-11 01:21:26,283 INFO L380 AbstractCegarLoop]: Difference is false [2020-02-11 01:21:26,283 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-02-11 01:21:26,284 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-02-11 01:21:26,299 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 76 places, 120 transitions [2020-02-11 01:21:27,298 INFO L129 PetriNetUnfolder]: 1793/2334 cut-off events. [2020-02-11 01:21:27,298 INFO L130 PetriNetUnfolder]: For 2304/2304 co-relation queries the response was YES. [2020-02-11 01:21:27,333 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4666 conditions, 2334 events. 1793/2334 cut-off events. For 2304/2304 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8911 event pairs. 0/2333 useless extension candidates. Maximal degree in co-relation 2090. Up to 630 conditions per place. [2020-02-11 01:21:27,333 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 120 transitions [2020-02-11 01:21:27,393 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 109 transitions [2020-02-11 01:21:28,265 INFO L129 PetriNetUnfolder]: 1793/2331 cut-off events. [2020-02-11 01:21:28,266 INFO L130 PetriNetUnfolder]: For 2304/2304 co-relation queries the response was YES. [2020-02-11 01:21:28,266 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-11 01:21:28,267 INFO L227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-11 01:21:28,267 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-11 01:21:28,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-11 01:21:28,280 INFO L82 PathProgramCache]: Analyzing trace with hash -558412521, now seen corresponding path program 1 times [2020-02-11 01:21:28,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-11 01:21:28,292 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919964193] [2020-02-11 01:21:28,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-11 01:21:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-11 01:21:28,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-11 01:21:28,481 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919964193] [2020-02-11 01:21:28,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-11 01:21:28,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-11 01:21:28,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [781744232] [2020-02-11 01:21:28,484 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-11 01:21:28,498 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-11 01:21:36,353 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 39366 states and 236197 transitions. [2020-02-11 01:21:36,353 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-11 01:21:36,612 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 6 times. [2020-02-11 01:21:36,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-11 01:21:36,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-11 01:21:36,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-11 01:21:36,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-11 01:21:36,641 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2020-02-11 01:21:36,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 109 transitions. Second operand 3 states. [2020-02-11 01:21:36,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-11 01:21:36,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2020-02-11 01:21:36,646 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-11 01:21:37,687 INFO L129 PetriNetUnfolder]: 1281/1727 cut-off events. [2020-02-11 01:21:37,687 INFO L130 PetriNetUnfolder]: For 2305/2305 co-relation queries the response was YES. [2020-02-11 01:21:37,704 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3619 conditions, 1727 events. 1281/1727 cut-off events. For 2305/2305 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6691 event pairs. 93/1820 useless extension candidates. Maximal degree in co-relation 2078. Up to 504 conditions per place. [2020-02-11 01:21:37,744 INFO L145 encePairwiseOnDemand]: 115/120 looper letters, 5 selfloop transitions, 1 changer transitions 0/105 dead transitions. [2020-02-11 01:21:37,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-11 01:21:37,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-11 01:21:37,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2020-02-11 01:21:37,756 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2020-02-11 01:21:37,757 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2020-02-11 01:21:37,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2020-02-11 01:21:37,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-11 01:21:37,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2020-02-11 01:21:37,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-11 01:21:37,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-11 01:21:37,776 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-11 01:21:37,778 INFO L178 Difference]: Start difference. First operand has 65 places, 109 transitions. Second operand 3 states and 340 transitions. [2020-02-11 01:21:37,781 INFO L206 Difference]: Finished difference. Result has 67 places, 105 transitions [2020-02-11 01:21:37,784 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=470, PETRI_PLACES=67, PETRI_TRANSITIONS=105} [2020-02-11 01:21:37,785 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 67 places, 105 transitions [2020-02-11 01:21:38,234 INFO L129 PetriNetUnfolder]: 1281/1727 cut-off events. [2020-02-11 01:21:38,235 INFO L130 PetriNetUnfolder]: For 1700/1700 co-relation queries the response was YES. [2020-02-11 01:21:38,255 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3456 conditions, 1727 events. 1281/1727 cut-off events. For 1700/1700 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 6660 event pairs. 0/1727 useless extension candidates. Maximal degree in co-relation 3429. Up to 504 conditions per place. [2020-02-11 01:21:38,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 105 transitions [2020-02-11 01:21:38,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 105 transitions [2020-02-11 01:21:38,307 INFO L479 AbstractCegarLoop]: Abstraction has has 67 places, 105 transitions [2020-02-11 01:21:38,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-11 01:21:38,808 INFO L129 PetriNetUnfolder]: 1281/1726 cut-off events. [2020-02-11 01:21:38,808 INFO L130 PetriNetUnfolder]: For 1700/1700 co-relation queries the response was YES. [2020-02-11 01:21:38,808 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-11 01:21:38,809 INFO L227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-11 01:21:38,809 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-11 01:21:38,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-11 01:21:38,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1593748281, now seen corresponding path program 1 times [2020-02-11 01:21:38,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-11 01:21:38,810 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960665525] [2020-02-11 01:21:38,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-11 01:21:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-11 01:21:38,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-11 01:21:38,876 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960665525] [2020-02-11 01:21:38,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-11 01:21:38,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-11 01:21:38,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [508816610] [2020-02-11 01:21:38,877 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-11 01:21:38,882 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-11 01:21:46,007 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 39366 states and 236197 transitions. [2020-02-11 01:21:46,007 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-11 01:21:46,432 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 12 times. [2020-02-11 01:21:46,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-11 01:21:46,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-11 01:21:46,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-11 01:21:46,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-11 01:21:46,438 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2020-02-11 01:21:46,439 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 105 transitions. Second operand 3 states. [2020-02-11 01:21:46,439 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-11 01:21:46,439 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2020-02-11 01:21:46,439 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-11 01:21:46,726 INFO L129 PetriNetUnfolder]: 483/711 cut-off events. [2020-02-11 01:21:46,726 INFO L130 PetriNetUnfolder]: For 1252/1252 co-relation queries the response was YES. [2020-02-11 01:21:46,735 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 711 events. 483/711 cut-off events. For 1252/1252 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2600 event pairs. 183/894 useless extension candidates. Maximal degree in co-relation 1407. Up to 168 conditions per place. [2020-02-11 01:21:46,753 INFO L145 encePairwiseOnDemand]: 112/120 looper letters, 2 selfloop transitions, 1 changer transitions 0/98 dead transitions. [2020-02-11 01:21:46,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-11 01:21:46,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-11 01:21:46,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2020-02-11 01:21:46,756 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2020-02-11 01:21:46,756 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2020-02-11 01:21:46,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2020-02-11 01:21:46,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-11 01:21:46,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2020-02-11 01:21:46,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-11 01:21:46,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-11 01:21:46,759 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-11 01:21:46,759 INFO L178 Difference]: Start difference. First operand has 67 places, 105 transitions. Second operand 3 states and 340 transitions. [2020-02-11 01:21:46,760 INFO L206 Difference]: Finished difference. Result has 69 places, 98 transitions [2020-02-11 01:21:46,760 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=437, PETRI_PLACES=69, PETRI_TRANSITIONS=98} [2020-02-11 01:21:46,761 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 69 places, 98 transitions [2020-02-11 01:21:46,906 INFO L129 PetriNetUnfolder]: 483/711 cut-off events. [2020-02-11 01:21:46,907 INFO L130 PetriNetUnfolder]: For 685/685 co-relation queries the response was YES. [2020-02-11 01:21:46,915 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1426 conditions, 711 events. 483/711 cut-off events. For 685/685 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2561 event pairs. 0/711 useless extension candidates. Maximal degree in co-relation 1398. Up to 168 conditions per place. [2020-02-11 01:21:46,916 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 98 transitions [2020-02-11 01:21:46,948 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 98 transitions [2020-02-11 01:21:46,948 INFO L479 AbstractCegarLoop]: Abstraction has has 69 places, 98 transitions [2020-02-11 01:21:46,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-11 01:21:47,145 INFO L129 PetriNetUnfolder]: 483/710 cut-off events. [2020-02-11 01:21:47,146 INFO L130 PetriNetUnfolder]: For 685/685 co-relation queries the response was YES. [2020-02-11 01:21:47,146 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-11 01:21:47,146 INFO L227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-11 01:21:47,147 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-11 01:21:47,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-11 01:21:47,147 INFO L82 PathProgramCache]: Analyzing trace with hash -324009803, now seen corresponding path program 1 times [2020-02-11 01:21:47,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-11 01:21:47,150 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956358071] [2020-02-11 01:21:47,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-11 01:21:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-11 01:21:47,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-11 01:21:47,233 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956358071] [2020-02-11 01:21:47,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-11 01:21:47,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-11 01:21:47,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [519141616] [2020-02-11 01:21:47,234 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-11 01:21:47,238 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-11 01:21:53,825 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 39366 states and 236197 transitions. [2020-02-11 01:21:53,826 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-11 01:21:54,017 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 10 times. [2020-02-11 01:21:54,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-11 01:21:54,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-11 01:21:54,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-11 01:21:54,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-11 01:21:54,021 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2020-02-11 01:21:54,022 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 98 transitions. Second operand 3 states. [2020-02-11 01:21:54,022 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-11 01:21:54,022 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2020-02-11 01:21:54,022 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-11 01:21:54,096 INFO L129 PetriNetUnfolder]: 180/310 cut-off events. [2020-02-11 01:21:54,096 INFO L130 PetriNetUnfolder]: For 537/537 co-relation queries the response was YES. [2020-02-11 01:21:54,101 INFO L76 FinitePrefix]: Finished finitePrefix Result has 635 conditions, 310 events. 180/310 cut-off events. For 537/537 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1039 event pairs. 78/388 useless extension candidates. Maximal degree in co-relation 606. Up to 60 conditions per place. [2020-02-11 01:21:54,110 INFO L145 encePairwiseOnDemand]: 113/120 looper letters, 3 selfloop transitions, 1 changer transitions 0/92 dead transitions. [2020-02-11 01:21:54,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-11 01:21:54,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-11 01:21:54,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2020-02-11 01:21:54,111 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2020-02-11 01:21:54,111 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2020-02-11 01:21:54,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2020-02-11 01:21:54,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-11 01:21:54,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2020-02-11 01:21:54,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-11 01:21:54,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-11 01:21:54,114 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-11 01:21:54,114 INFO L178 Difference]: Start difference. First operand has 69 places, 98 transitions. Second operand 3 states and 340 transitions. [2020-02-11 01:21:54,117 INFO L206 Difference]: Finished difference. Result has 71 places, 92 transitions [2020-02-11 01:21:54,118 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=409, PETRI_PLACES=71, PETRI_TRANSITIONS=92} [2020-02-11 01:21:54,119 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 71 places, 92 transitions [2020-02-11 01:21:54,169 INFO L129 PetriNetUnfolder]: 180/310 cut-off events. [2020-02-11 01:21:54,169 INFO L130 PetriNetUnfolder]: For 285/285 co-relation queries the response was YES. [2020-02-11 01:21:54,174 INFO L76 FinitePrefix]: Finished finitePrefix Result has 626 conditions, 310 events. 180/310 cut-off events. For 285/285 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1015 event pairs. 0/310 useless extension candidates. Maximal degree in co-relation 597. Up to 60 conditions per place. [2020-02-11 01:21:54,174 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 92 transitions [2020-02-11 01:21:54,182 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 92 transitions [2020-02-11 01:21:54,182 INFO L479 AbstractCegarLoop]: Abstraction has has 71 places, 92 transitions [2020-02-11 01:21:54,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-11 01:21:54,228 INFO L129 PetriNetUnfolder]: 180/309 cut-off events. [2020-02-11 01:21:54,228 INFO L130 PetriNetUnfolder]: For 285/285 co-relation queries the response was YES. [2020-02-11 01:21:54,228 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-11 01:21:54,228 INFO L227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-11 01:21:54,229 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-11 01:21:54,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-11 01:21:54,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1376870071, now seen corresponding path program 1 times [2020-02-11 01:21:54,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-11 01:21:54,230 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994574327] [2020-02-11 01:21:54,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-11 01:21:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-11 01:21:54,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-11 01:21:54,291 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994574327] [2020-02-11 01:21:54,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-11 01:21:54,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-11 01:21:54,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [169281886] [2020-02-11 01:21:54,292 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-11 01:21:54,297 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-11 01:22:02,356 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 39366 states and 236197 transitions. [2020-02-11 01:22:02,356 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-11 01:22:02,538 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 6 times. [2020-02-11 01:22:02,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-11 01:22:02,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-11 01:22:02,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-11 01:22:02,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-11 01:22:02,542 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2020-02-11 01:22:02,543 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 92 transitions. Second operand 3 states. [2020-02-11 01:22:02,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-11 01:22:02,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2020-02-11 01:22:02,544 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-11 01:22:02,617 INFO L129 PetriNetUnfolder]: 125/239 cut-off events. [2020-02-11 01:22:02,617 INFO L130 PetriNetUnfolder]: For 311/311 co-relation queries the response was YES. [2020-02-11 01:22:02,622 INFO L76 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 239 events. 125/239 cut-off events. For 311/311 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 794 event pairs. 16/255 useless extension candidates. Maximal degree in co-relation 479. Up to 45 conditions per place. [2020-02-11 01:22:02,631 INFO L145 encePairwiseOnDemand]: 116/120 looper letters, 6 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2020-02-11 01:22:02,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-11 01:22:02,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-11 01:22:02,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2020-02-11 01:22:02,634 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2020-02-11 01:22:02,634 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2020-02-11 01:22:02,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2020-02-11 01:22:02,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-11 01:22:02,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2020-02-11 01:22:02,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-11 01:22:02,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-11 01:22:02,638 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-11 01:22:02,638 INFO L178 Difference]: Start difference. First operand has 71 places, 92 transitions. Second operand 3 states and 340 transitions. [2020-02-11 01:22:02,641 INFO L206 Difference]: Finished difference. Result has 73 places, 89 transitions [2020-02-11 01:22:02,642 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=396, PETRI_PLACES=73, PETRI_TRANSITIONS=89} [2020-02-11 01:22:02,643 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 73 places, 89 transitions [2020-02-11 01:22:02,689 INFO L129 PetriNetUnfolder]: 125/239 cut-off events. [2020-02-11 01:22:02,689 INFO L130 PetriNetUnfolder]: For 215/215 co-relation queries the response was YES. [2020-02-11 01:22:02,693 INFO L76 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 239 events. 125/239 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 759 event pairs. 0/239 useless extension candidates. Maximal degree in co-relation 459. Up to 45 conditions per place. [2020-02-11 01:22:02,693 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 89 transitions [2020-02-11 01:22:02,715 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 89 transitions [2020-02-11 01:22:02,717 INFO L479 AbstractCegarLoop]: Abstraction has has 73 places, 89 transitions [2020-02-11 01:22:02,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-11 01:22:02,750 INFO L129 PetriNetUnfolder]: 125/238 cut-off events. [2020-02-11 01:22:02,751 INFO L130 PetriNetUnfolder]: For 215/215 co-relation queries the response was YES. [2020-02-11 01:22:02,751 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-11 01:22:02,751 INFO L227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-11 01:22:02,751 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-11 01:22:02,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-11 01:22:02,752 INFO L82 PathProgramCache]: Analyzing trace with hash -55931421, now seen corresponding path program 1 times [2020-02-11 01:22:02,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-11 01:22:02,753 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426537545] [2020-02-11 01:22:02,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-11 01:22:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-11 01:22:02,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-11 01:22:02,803 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426537545] [2020-02-11 01:22:02,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-11 01:22:02,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-11 01:22:02,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [851448909] [2020-02-11 01:22:02,804 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-11 01:22:02,809 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-11 01:22:08,323 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 39366 states and 236197 transitions. [2020-02-11 01:22:08,323 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-11 01:22:08,448 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 6 times. [2020-02-11 01:22:08,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-11 01:22:08,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-11 01:22:08,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-11 01:22:08,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-11 01:22:08,449 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2020-02-11 01:22:08,450 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 89 transitions. Second operand 3 states. [2020-02-11 01:22:08,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-11 01:22:08,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2020-02-11 01:22:08,450 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-11 01:22:08,490 INFO L129 PetriNetUnfolder]: 47/125 cut-off events. [2020-02-11 01:22:08,490 INFO L130 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2020-02-11 01:22:08,492 INFO L76 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 125 events. 47/125 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 363 event pairs. 20/145 useless extension candidates. Maximal degree in co-relation 241. Up to 16 conditions per place. [2020-02-11 01:22:08,495 INFO L145 encePairwiseOnDemand]: 114/120 looper letters, 4 selfloop transitions, 1 changer transitions 0/84 dead transitions. [2020-02-11 01:22:08,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-11 01:22:08,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-11 01:22:08,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2020-02-11 01:22:08,496 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2020-02-11 01:22:08,497 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2020-02-11 01:22:08,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2020-02-11 01:22:08,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-11 01:22:08,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2020-02-11 01:22:08,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-11 01:22:08,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-11 01:22:08,499 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-11 01:22:08,500 INFO L178 Difference]: Start difference. First operand has 73 places, 89 transitions. Second operand 3 states and 340 transitions. [2020-02-11 01:22:08,501 INFO L206 Difference]: Finished difference. Result has 75 places, 84 transitions [2020-02-11 01:22:08,501 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=373, PETRI_PLACES=75, PETRI_TRANSITIONS=84} [2020-02-11 01:22:08,501 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 75 places, 84 transitions [2020-02-11 01:22:08,519 INFO L129 PetriNetUnfolder]: 47/125 cut-off events. [2020-02-11 01:22:08,519 INFO L130 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2020-02-11 01:22:08,521 INFO L76 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 125 events. 47/125 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 346 event pairs. 0/125 useless extension candidates. Maximal degree in co-relation 232. Up to 16 conditions per place. [2020-02-11 01:22:08,521 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 84 transitions [2020-02-11 01:22:08,525 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 84 transitions [2020-02-11 01:22:08,525 INFO L479 AbstractCegarLoop]: Abstraction has has 75 places, 84 transitions [2020-02-11 01:22:08,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-11 01:22:08,543 INFO L129 PetriNetUnfolder]: 47/124 cut-off events. [2020-02-11 01:22:08,543 INFO L130 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2020-02-11 01:22:08,543 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-11 01:22:08,544 INFO L227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-11 01:22:08,544 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-11 01:22:08,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-11 01:22:08,544 INFO L82 PathProgramCache]: Analyzing trace with hash 639077565, now seen corresponding path program 1 times [2020-02-11 01:22:08,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-11 01:22:08,545 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727090318] [2020-02-11 01:22:08,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-11 01:22:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-11 01:22:08,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-11 01:22:08,603 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727090318] [2020-02-11 01:22:08,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-11 01:22:08,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-11 01:22:08,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1686063551] [2020-02-11 01:22:08,604 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-11 01:22:08,608 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-11 01:22:13,931 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 39366 states and 236197 transitions. [2020-02-11 01:22:13,932 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-11 01:22:14,046 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 6 times. [2020-02-11 01:22:14,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-11 01:22:14,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-11 01:22:14,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-11 01:22:14,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-11 01:22:14,048 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2020-02-11 01:22:14,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 84 transitions. Second operand 3 states. [2020-02-11 01:22:14,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-11 01:22:14,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2020-02-11 01:22:14,049 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-11 01:22:14,108 INFO L129 PetriNetUnfolder]: 44/121 cut-off events. [2020-02-11 01:22:14,109 INFO L130 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2020-02-11 01:22:14,111 INFO L76 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 121 events. 44/121 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 348 event pairs. 1/122 useless extension candidates. Maximal degree in co-relation 236. Up to 16 conditions per place. [2020-02-11 01:22:14,116 INFO L145 encePairwiseOnDemand]: 118/120 looper letters, 8 selfloop transitions, 1 changer transitions 0/83 dead transitions. [2020-02-11 01:22:14,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-11 01:22:14,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-11 01:22:14,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2020-02-11 01:22:14,118 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2020-02-11 01:22:14,118 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2020-02-11 01:22:14,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2020-02-11 01:22:14,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-11 01:22:14,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2020-02-11 01:22:14,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-11 01:22:14,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-11 01:22:14,120 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-11 01:22:14,120 INFO L178 Difference]: Start difference. First operand has 75 places, 84 transitions. Second operand 3 states and 340 transitions. [2020-02-11 01:22:14,121 INFO L206 Difference]: Finished difference. Result has 77 places, 83 transitions [2020-02-11 01:22:14,121 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=370, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2020-02-11 01:22:14,121 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 77 places, 83 transitions [2020-02-11 01:22:14,142 INFO L129 PetriNetUnfolder]: 44/121 cut-off events. [2020-02-11 01:22:14,143 INFO L130 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2020-02-11 01:22:14,145 INFO L76 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 121 events. 44/121 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 332 event pairs. 0/121 useless extension candidates. Maximal degree in co-relation 231. Up to 16 conditions per place. [2020-02-11 01:22:14,145 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 83 transitions [2020-02-11 01:22:14,148 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 83 transitions [2020-02-11 01:22:14,148 INFO L479 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions [2020-02-11 01:22:14,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-11 01:22:14,170 INFO L129 PetriNetUnfolder]: 44/120 cut-off events. [2020-02-11 01:22:14,170 INFO L130 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2020-02-11 01:22:14,170 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-11 01:22:14,170 INFO L227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-11 01:22:14,171 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-11 01:22:14,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-11 01:22:14,171 INFO L82 PathProgramCache]: Analyzing trace with hash 905698199, now seen corresponding path program 1 times [2020-02-11 01:22:14,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-11 01:22:14,177 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907074696] [2020-02-11 01:22:14,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-11 01:22:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-11 01:22:14,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-11 01:22:14,218 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907074696] [2020-02-11 01:22:14,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-11 01:22:14,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-11 01:22:14,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1899781197] [2020-02-11 01:22:14,220 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-11 01:22:14,224 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-11 01:22:20,419 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 39366 states and 236197 transitions. [2020-02-11 01:22:20,420 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-11 01:22:20,539 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 12 times. [2020-02-11 01:22:20,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-11 01:22:20,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-11 01:22:20,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-11 01:22:20,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-11 01:22:20,541 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2020-02-11 01:22:20,541 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions. Second operand 3 states. [2020-02-11 01:22:20,541 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-11 01:22:20,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2020-02-11 01:22:20,542 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-11 01:22:20,577 INFO L129 PetriNetUnfolder]: 3/43 cut-off events. [2020-02-11 01:22:20,578 INFO L130 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2020-02-11 01:22:20,579 INFO L76 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 43 events. 3/43 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs. 11/54 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2020-02-11 01:22:20,580 INFO L145 encePairwiseOnDemand]: 111/120 looper letters, 1 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2020-02-11 01:22:20,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-11 01:22:20,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-11 01:22:20,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2020-02-11 01:22:20,582 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2020-02-11 01:22:20,582 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2020-02-11 01:22:20,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2020-02-11 01:22:20,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-11 01:22:20,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2020-02-11 01:22:20,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-11 01:22:20,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-11 01:22:20,584 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-11 01:22:20,585 INFO L178 Difference]: Start difference. First operand has 77 places, 83 transitions. Second operand 3 states and 340 transitions. [2020-02-11 01:22:20,585 INFO L206 Difference]: Finished difference. Result has 79 places, 42 transitions [2020-02-11 01:22:20,585 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=79, PETRI_TRANSITIONS=42} [2020-02-11 01:22:20,586 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 79 places, 42 transitions [2020-02-11 01:22:20,593 INFO L129 PetriNetUnfolder]: 3/43 cut-off events. [2020-02-11 01:22:20,594 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2020-02-11 01:22:20,594 INFO L76 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 43 events. 3/43 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs. 0/43 useless extension candidates. Maximal degree in co-relation 76. Up to 4 conditions per place. [2020-02-11 01:22:20,595 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 42 transitions [2020-02-11 01:22:20,596 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 42 transitions [2020-02-11 01:22:20,596 INFO L479 AbstractCegarLoop]: Abstraction has has 79 places, 42 transitions [2020-02-11 01:22:20,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-11 01:22:20,603 INFO L129 PetriNetUnfolder]: 3/42 cut-off events. [2020-02-11 01:22:20,603 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2020-02-11 01:22:20,603 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-11 01:22:20,604 INFO L227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-11 01:22:20,604 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-11 01:22:20,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-11 01:22:20,604 INFO L82 PathProgramCache]: Analyzing trace with hash -602624685, now seen corresponding path program 1 times [2020-02-11 01:22:20,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-11 01:22:20,605 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493958216] [2020-02-11 01:22:20,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-11 01:22:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-11 01:22:20,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-11 01:22:20,631 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493958216] [2020-02-11 01:22:20,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-11 01:22:20,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-11 01:22:20,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2124209948] [2020-02-11 01:22:20,633 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-11 01:22:20,639 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-11 01:22:27,995 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 39366 states and 236197 transitions. [2020-02-11 01:22:27,996 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-11 01:22:28,112 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 8 times. [2020-02-11 01:22:28,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-11 01:22:28,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-11 01:22:28,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-11 01:22:28,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-11 01:22:28,114 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2020-02-11 01:22:28,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 42 transitions. Second operand 3 states. [2020-02-11 01:22:28,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-11 01:22:28,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2020-02-11 01:22:28,114 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-11 01:22:28,126 INFO L129 PetriNetUnfolder]: 0/37 cut-off events. [2020-02-11 01:22:28,126 INFO L130 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2020-02-11 01:22:28,127 INFO L76 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 37 events. 0/37 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 52 event pairs. 2/39 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2020-02-11 01:22:28,130 INFO L145 encePairwiseOnDemand]: 117/120 looper letters, 1 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2020-02-11 01:22:28,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-11 01:22:28,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-11 01:22:28,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 334 transitions. [2020-02-11 01:22:28,132 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9277777777777778 [2020-02-11 01:22:28,132 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 334 transitions. [2020-02-11 01:22:28,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 334 transitions. [2020-02-11 01:22:28,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-11 01:22:28,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 334 transitions. [2020-02-11 01:22:28,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-11 01:22:28,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-11 01:22:28,134 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-11 01:22:28,134 INFO L178 Difference]: Start difference. First operand has 79 places, 42 transitions. Second operand 3 states and 334 transitions. [2020-02-11 01:22:28,135 INFO L206 Difference]: Finished difference. Result has 81 places, 37 transitions [2020-02-11 01:22:28,135 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=81, PETRI_TRANSITIONS=37} [2020-02-11 01:22:28,135 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 81 places, 37 transitions [2020-02-11 01:22:28,146 INFO L129 PetriNetUnfolder]: 0/37 cut-off events. [2020-02-11 01:22:28,146 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2020-02-11 01:22:28,147 INFO L76 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 37 events. 0/37 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs. 0/37 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2020-02-11 01:22:28,147 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 37 transitions [2020-02-11 01:22:28,149 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 37 transitions [2020-02-11 01:22:28,149 INFO L479 AbstractCegarLoop]: Abstraction has has 81 places, 37 transitions [2020-02-11 01:22:28,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-11 01:22:28,155 INFO L129 PetriNetUnfolder]: 0/36 cut-off events. [2020-02-11 01:22:28,155 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2020-02-11 01:22:28,155 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-11 01:22:28,156 INFO L227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-11 01:22:28,156 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-11 01:22:28,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-11 01:22:28,156 INFO L82 PathProgramCache]: Analyzing trace with hash 640788827, now seen corresponding path program 1 times [2020-02-11 01:22:28,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-11 01:22:28,157 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233773143] [2020-02-11 01:22:28,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-11 01:22:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-11 01:22:28,936 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2020-02-11 01:22:29,088 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-02-11 01:22:29,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-11 01:22:29,102 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233773143] [2020-02-11 01:22:29,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-11 01:22:29,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-02-11 01:22:29,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [870341443] [2020-02-11 01:22:29,103 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-11 01:22:29,106 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-11 01:22:36,552 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 39366 states and 236197 transitions. [2020-02-11 01:22:36,552 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-11 01:23:22,608 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-02-11 01:23:31,966 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-02-11 01:25:01,533 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-02-11 01:31:29,121 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 1946 times. [2020-02-11 01:31:29,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 1002 states [2020-02-11 01:31:29,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-11 01:31:29,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 1002 interpolants. [2020-02-11 01:31:29,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39413, Invalid=963589, Unknown=0, NotChecked=0, Total=1003002 [2020-02-11 01:31:29,195 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 120 [2020-02-11 01:31:29,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 37 transitions. Second operand 1002 states. [2020-02-11 01:31:29,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-11 01:31:29,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 120 [2020-02-11 01:31:29,208 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2020-02-11 01:34:43,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-02-11 01:34:43,037 WARN L544 AbstractCegarLoop]: Verification canceled [2020-02-11 01:34:43,042 WARN L227 ceAbstractionStarter]: Timeout [2020-02-11 01:34:43,043 INFO L202 PluginConnector]: Adding new model example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.02 01:34:43 BasicIcfg [2020-02-11 01:34:43,043 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-02-11 01:34:43,045 INFO L168 Benchmark]: Toolchain (without parser) took 797426.46 ms. Allocated memory was 145.8 MB in the beginning and 3.4 GB in the end (delta: 3.3 GB). Free memory was 120.8 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2020-02-11 01:34:43,046 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-02-11 01:34:43,046 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.40 ms. Allocated memory is still 145.8 MB. Free memory was 120.6 MB in the beginning and 118.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-02-11 01:34:43,047 INFO L168 Benchmark]: Boogie Preprocessor took 24.82 ms. Allocated memory is still 145.8 MB. Free memory was 118.9 MB in the beginning and 117.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-02-11 01:34:43,048 INFO L168 Benchmark]: RCFGBuilder took 357.07 ms. Allocated memory is still 145.8 MB. Free memory was 117.6 MB in the beginning and 103.5 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-02-11 01:34:43,049 INFO L168 Benchmark]: TraceAbstraction took 797000.88 ms. Allocated memory was 145.8 MB in the beginning and 3.4 GB in the end (delta: 3.3 GB). Free memory was 103.1 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2020-02-11 01:34:43,053 INFO L336 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 0.19 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 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 37.40 ms. Allocated memory is still 145.8 MB. Free memory was 120.6 MB in the beginning and 118.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.82 ms. Allocated memory is still 145.8 MB. Free memory was 118.9 MB in the beginning and 117.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 357.07 ms. Allocated memory is still 145.8 MB. Free memory was 117.6 MB in the beginning and 103.5 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 797000.88 ms. Allocated memory was 145.8 MB in the beginning and 3.4 GB in the end (delta: 3.3 GB). Free memory was 103.1 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 31]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 31). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (1002states, 29/120 universal loopers) in iteration 9,while PetriNetUnfolder was constructing finite prefix that currently has 1052 conditions, 373 events (185/372 cut-off events. For 355/355 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 2455 event pairs. 0/517 useless extension candidates. Maximal degree in co-relation 1033. Up to 47 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. Result: TIMEOUT, OverallTime: 796.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 195.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.1s, HoareTripleCheckerStatistics: 190 SDtfs, 190 SDslu, 55398 SDs, 0 SdLazy, 122690 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 109.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2160 GetRequests, 1081 SyntacticMatches, 0 SemanticMatches, 1079 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468077 ImplicationChecksByTransitivity, 597.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 333 NumberOfCodeBlocks, 333 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 324 ConstructedInterpolants, 0 QuantifiedInterpolants, 52596 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown