/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-2.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-12 22:20:57,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-12 22:20:57,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-12 22:20:57,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-12 22:20:57,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-12 22:20:57,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-12 22:20:57,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-12 22:20:57,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-12 22:20:57,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-12 22:20:57,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-12 22:20:57,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-12 22:20:57,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-12 22:20:57,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-12 22:20:57,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-12 22:20:57,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-12 22:20:57,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-12 22:20:57,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-12 22:20:57,336 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.epf [2021-08-12 22:20:57,367 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-12 22:20:57,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-12 22:20:57,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-12 22:20:57,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-12 22:20:57,371 INFO L138 SettingsManager]: * Use SBE=true [2021-08-12 22:20:57,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-12 22:20:57,372 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-12 22:20:57,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-12 22:20:57,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-12 22:20:57,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-12 22:20:57,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-12 22:20:57,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-12 22:20:57,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-12 22:20:57,374 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-12 22:20:57,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-12 22:20:57,374 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-12 22:20:57,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-12 22:20:57,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-12 22:20:57,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-12 22:20:57,375 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-12 22:20:57,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-12 22:20:57,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 22:20:57,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-12 22:20:57,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-12 22:20:57,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-12 22:20:57,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-12 22:20:57,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-12 22:20:57,376 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-12 22:20:57,376 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-12 22:20:57,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-12 22:20:57,377 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-12 22:20:57,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-12 22:20:57,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-12 22:20:57,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-12 22:20:57,738 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-12 22:20:57,739 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-12 22:20:57,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-2.wvr.bpl [2021-08-12 22:20:57,740 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-2.wvr.bpl' [2021-08-12 22:20:57,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-12 22:20:57,770 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-12 22:20:57,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-12 22:20:57,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-12 22:20:57,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-12 22:20:57,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:20:57" (1/1) ... [2021-08-12 22:20:57,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:20:57" (1/1) ... [2021-08-12 22:20:57,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-12 22:20:57,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-12 22:20:57,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-12 22:20:57,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-12 22:20:57,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:20:57" (1/1) ... [2021-08-12 22:20:57,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:20:57" (1/1) ... [2021-08-12 22:20:57,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:20:57" (1/1) ... [2021-08-12 22:20:57,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:20:57" (1/1) ... [2021-08-12 22:20:57,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:20:57" (1/1) ... [2021-08-12 22:20:57,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:20:57" (1/1) ... [2021-08-12 22:20:57,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:20:57" (1/1) ... [2021-08-12 22:20:57,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-12 22:20:57,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-12 22:20:57,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-12 22:20:57,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-12 22:20:57,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:20:57" (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 [2021-08-12 22:20:57,877 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-12 22:20:57,877 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-12 22:20:57,877 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-12 22:20:57,878 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-12 22:20:57,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-12 22:20:57,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-12 22:20:57,878 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-12 22:20:57,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-12 22:20:57,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-12 22:20:57,880 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-12 22:20:58,073 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-12 22:20:58,074 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-12 22:20:58,075 INFO L202 PluginConnector]: Adding new model bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 10:20:58 BoogieIcfgContainer [2021-08-12 22:20:58,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-12 22:20:58,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-12 22:20:58,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-12 22:20:58,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-12 22:20:58,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:20:57" (1/2) ... [2021-08-12 22:20:58,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52bfc7d7 and model type bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 10:20:58, skipping insertion in model container [2021-08-12 22:20:58,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 10:20:58" (2/2) ... [2021-08-12 22:20:58,082 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-2.wvr.bpl [2021-08-12 22:20:58,103 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-12 22:20:58,104 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-12 22:20:58,105 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-12 22:20:58,167 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-08-12 22:20:58,190 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-12 22:20:58,229 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 22:20:58,229 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-12 22:20:58,229 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 22:20:58,229 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 22:20:58,229 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 22:20:58,229 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 22:20:58,229 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 22:20:58,229 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 22:20:58,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 78 flow [2021-08-12 22:20:58,281 INFO L129 PetriNetUnfolder]: 0/29 cut-off events. [2021-08-12 22:20:58,282 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-08-12 22:20:58,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 29 events. 0/29 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-08-12 22:20:58,284 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 78 flow [2021-08-12 22:20:58,288 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 27 transitions, 66 flow [2021-08-12 22:20:58,306 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2021-08-12 22:20:58,306 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-08-12 22:20:58,306 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:58,307 INFO L266 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] [2021-08-12 22:20:58,308 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:58,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:58,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1562918420, now seen corresponding path program 1 times [2021-08-12 22:20:58,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:58,322 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868586436] [2021-08-12 22:20:58,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:58,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:58,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:58,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:58,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:58,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:58,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:58,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:58,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:58,604 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-08-12 22:20:58,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:58,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:58,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:58,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:58,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:58,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868586436] [2021-08-12 22:20:58,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868586436] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:58,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:58,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-12 22:20:58,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287783625] [2021-08-12 22:20:58,637 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-12 22:20:58,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:58,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-12 22:20:58,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-12 22:20:58,654 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 31 [2021-08-12 22:20:58,658 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 66 flow. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:58,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:58,658 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 31 [2021-08-12 22:20:58,659 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:58,830 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-08-12 22:20:58,830 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-08-12 22:20:58,831 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 59 events. 1/59 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 163 event pairs, 0 based on Foata normal form. 1/59 useless extension candidates. Maximal degree in co-relation 64. Up to 5 conditions per place. [2021-08-12 22:20:58,833 INFO L132 encePairwiseOnDemand]: 25/31 looper letters, 7 selfloop transitions, 7 changer transitions 2/37 dead transitions. [2021-08-12 22:20:58,833 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 118 flow [2021-08-12 22:20:58,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:58,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:58,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2021-08-12 22:20:58,843 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.842741935483871 [2021-08-12 22:20:58,844 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 209 transitions. [2021-08-12 22:20:58,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 209 transitions. [2021-08-12 22:20:58,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:58,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 209 transitions. [2021-08-12 22:20:58,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 26.125) internal successors, (209), 8 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:58,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 31.0) internal successors, (279), 9 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:58,854 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 31.0) internal successors, (279), 9 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:58,855 INFO L348 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2021-08-12 22:20:58,855 INFO L482 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 118 flow [2021-08-12 22:20:58,856 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:58,856 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:58,856 INFO L266 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] [2021-08-12 22:20:58,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-12 22:20:58,856 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:58,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:58,857 INFO L82 PathProgramCache]: Analyzing trace with hash -965493228, now seen corresponding path program 2 times [2021-08-12 22:20:58,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:58,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994244417] [2021-08-12 22:20:58,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:58,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:58,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:58,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:58,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:58,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:58,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:58,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:58,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:58,921 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-08-12 22:20:58,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:58,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:58,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:58,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:58,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:58,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994244417] [2021-08-12 22:20:58,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994244417] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:58,931 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:58,931 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-12 22:20:58,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318980624] [2021-08-12 22:20:58,933 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-12 22:20:58,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:58,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-12 22:20:58,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-12 22:20:58,934 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 31 [2021-08-12 22:20:58,935 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 118 flow. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:58,935 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:58,935 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 31 [2021-08-12 22:20:58,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:59,047 INFO L129 PetriNetUnfolder]: 1/57 cut-off events. [2021-08-12 22:20:59,048 INFO L130 PetriNetUnfolder]: For 14/16 co-relation queries the response was YES. [2021-08-12 22:20:59,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 57 events. 1/57 cut-off events. For 14/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 151 event pairs, 0 based on Foata normal form. 1/58 useless extension candidates. Maximal degree in co-relation 78. Up to 5 conditions per place. [2021-08-12 22:20:59,049 INFO L132 encePairwiseOnDemand]: 25/31 looper letters, 4 selfloop transitions, 7 changer transitions 6/38 dead transitions. [2021-08-12 22:20:59,049 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 38 transitions, 156 flow [2021-08-12 22:20:59,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:59,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:59,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2021-08-12 22:20:59,052 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8387096774193549 [2021-08-12 22:20:59,052 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 208 transitions. [2021-08-12 22:20:59,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 208 transitions. [2021-08-12 22:20:59,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:59,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 208 transitions. [2021-08-12 22:20:59,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 31.0) internal successors, (279), 9 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,060 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 31.0) internal successors, (279), 9 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,061 INFO L348 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2021-08-12 22:20:59,061 INFO L482 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 156 flow [2021-08-12 22:20:59,062 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,062 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:59,062 INFO L266 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] [2021-08-12 22:20:59,062 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-12 22:20:59,062 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:59,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:59,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1298833898, now seen corresponding path program 3 times [2021-08-12 22:20:59,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:59,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528274487] [2021-08-12 22:20:59,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:59,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:59,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:59,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:59,158 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-08-12 22:20:59,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:59,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:59,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:59,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:59,192 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:59,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528274487] [2021-08-12 22:20:59,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528274487] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:59,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:59,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:20:59,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353962646] [2021-08-12 22:20:59,197 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-12 22:20:59,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:59,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-12 22:20:59,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-12 22:20:59,200 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 31 [2021-08-12 22:20:59,201 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,201 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:59,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 31 [2021-08-12 22:20:59,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:59,291 INFO L129 PetriNetUnfolder]: 33/178 cut-off events. [2021-08-12 22:20:59,291 INFO L130 PetriNetUnfolder]: For 26/30 co-relation queries the response was YES. [2021-08-12 22:20:59,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 178 events. 33/178 cut-off events. For 26/30 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 851 event pairs, 5 based on Foata normal form. 2/174 useless extension candidates. Maximal degree in co-relation 330. Up to 52 conditions per place. [2021-08-12 22:20:59,294 INFO L132 encePairwiseOnDemand]: 25/31 looper letters, 12 selfloop transitions, 5 changer transitions 13/55 dead transitions. [2021-08-12 22:20:59,294 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 55 transitions, 242 flow [2021-08-12 22:20:59,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-12 22:20:59,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-12 22:20:59,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2021-08-12 22:20:59,295 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8225806451612904 [2021-08-12 22:20:59,296 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 153 transitions. [2021-08-12 22:20:59,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 153 transitions. [2021-08-12 22:20:59,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:59,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 153 transitions. [2021-08-12 22:20:59,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 31.0) internal successors, (217), 7 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,298 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 31.0) internal successors, (217), 7 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,298 INFO L348 CegarLoopForPetriNet]: 34 programPoint places, 19 predicate places. [2021-08-12 22:20:59,299 INFO L482 AbstractCegarLoop]: Abstraction has has 53 places, 55 transitions, 242 flow [2021-08-12 22:20:59,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,299 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:59,299 INFO L266 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] [2021-08-12 22:20:59,299 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-12 22:20:59,299 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:59,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:59,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1594527836, now seen corresponding path program 4 times [2021-08-12 22:20:59,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:59,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128652715] [2021-08-12 22:20:59,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:59,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:59,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:59,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:59,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:59,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:59,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128652715] [2021-08-12 22:20:59,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128652715] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:59,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:59,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 22:20:59,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059133684] [2021-08-12 22:20:59,335 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 22:20:59,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:59,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 22:20:59,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 22:20:59,335 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 31 [2021-08-12 22:20:59,336 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 55 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,336 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:59,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 31 [2021-08-12 22:20:59,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:59,374 INFO L129 PetriNetUnfolder]: 32/183 cut-off events. [2021-08-12 22:20:59,375 INFO L130 PetriNetUnfolder]: For 28/32 co-relation queries the response was YES. [2021-08-12 22:20:59,378 INFO L84 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 183 events. 32/183 cut-off events. For 28/32 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 896 event pairs, 8 based on Foata normal form. 3/180 useless extension candidates. Maximal degree in co-relation 354. Up to 52 conditions per place. [2021-08-12 22:20:59,380 INFO L132 encePairwiseOnDemand]: 28/31 looper letters, 2 selfloop transitions, 2 changer transitions 14/55 dead transitions. [2021-08-12 22:20:59,380 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 55 transitions, 250 flow [2021-08-12 22:20:59,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 22:20:59,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 22:20:59,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2021-08-12 22:20:59,383 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8924731182795699 [2021-08-12 22:20:59,383 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 83 transitions. [2021-08-12 22:20:59,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 83 transitions. [2021-08-12 22:20:59,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:59,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 83 transitions. [2021-08-12 22:20:59,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,388 INFO L348 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2021-08-12 22:20:59,388 INFO L482 AbstractCegarLoop]: Abstraction has has 55 places, 55 transitions, 250 flow [2021-08-12 22:20:59,389 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,389 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:59,389 INFO L266 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] [2021-08-12 22:20:59,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-12 22:20:59,390 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:59,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:59,390 INFO L82 PathProgramCache]: Analyzing trace with hash 783863264, now seen corresponding path program 5 times [2021-08-12 22:20:59,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:59,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535688801] [2021-08-12 22:20:59,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:59,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:20:59,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:59,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:59,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-12 22:20:59,514 INFO L142 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-08-12 22:20:59,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-12 22:20:59,540 INFO L142 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-08-12 22:20:59,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:20:59,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:59,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:59,555 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:59,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535688801] [2021-08-12 22:20:59,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535688801] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:59,556 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:59,556 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-12 22:20:59,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841004839] [2021-08-12 22:20:59,556 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-12 22:20:59,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:59,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-12 22:20:59,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-12 22:20:59,558 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 31 [2021-08-12 22:20:59,558 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 55 transitions, 250 flow. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,558 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:59,558 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 31 [2021-08-12 22:20:59,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:59,641 INFO L129 PetriNetUnfolder]: 22/157 cut-off events. [2021-08-12 22:20:59,641 INFO L130 PetriNetUnfolder]: For 60/74 co-relation queries the response was YES. [2021-08-12 22:20:59,642 INFO L84 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 157 events. 22/157 cut-off events. For 60/74 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 706 event pairs, 8 based on Foata normal form. 2/153 useless extension candidates. Maximal degree in co-relation 357. Up to 49 conditions per place. [2021-08-12 22:20:59,642 INFO L132 encePairwiseOnDemand]: 23/31 looper letters, 8 selfloop transitions, 2 changer transitions 22/57 dead transitions. [2021-08-12 22:20:59,642 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 314 flow [2021-08-12 22:20:59,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-12 22:20:59,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-12 22:20:59,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2021-08-12 22:20:59,651 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7926267281105991 [2021-08-12 22:20:59,651 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 172 transitions. [2021-08-12 22:20:59,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 172 transitions. [2021-08-12 22:20:59,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:59,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 172 transitions. [2021-08-12 22:20:59,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,653 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,653 INFO L348 CegarLoopForPetriNet]: 34 programPoint places, 27 predicate places. [2021-08-12 22:20:59,653 INFO L482 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 314 flow [2021-08-12 22:20:59,653 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,653 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:59,654 INFO L266 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] [2021-08-12 22:20:59,654 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-12 22:20:59,654 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:59,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:59,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1160043718, now seen corresponding path program 6 times [2021-08-12 22:20:59,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:59,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018729852] [2021-08-12 22:20:59,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:59,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:59,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:59,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:59,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:59,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:59,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018729852] [2021-08-12 22:20:59,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018729852] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:59,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:59,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 22:20:59,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003622698] [2021-08-12 22:20:59,692 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 22:20:59,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:59,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 22:20:59,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 22:20:59,693 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 31 [2021-08-12 22:20:59,693 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:59,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 31 [2021-08-12 22:20:59,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:59,722 INFO L129 PetriNetUnfolder]: 23/165 cut-off events. [2021-08-12 22:20:59,722 INFO L130 PetriNetUnfolder]: For 61/73 co-relation queries the response was YES. [2021-08-12 22:20:59,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 165 events. 23/165 cut-off events. For 61/73 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 755 event pairs, 10 based on Foata normal form. 4/164 useless extension candidates. Maximal degree in co-relation 391. Up to 53 conditions per place. [2021-08-12 22:20:59,723 INFO L132 encePairwiseOnDemand]: 28/31 looper letters, 2 selfloop transitions, 2 changer transitions 22/57 dead transitions. [2021-08-12 22:20:59,723 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 322 flow [2021-08-12 22:20:59,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 22:20:59,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 22:20:59,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2021-08-12 22:20:59,724 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8924731182795699 [2021-08-12 22:20:59,725 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 83 transitions. [2021-08-12 22:20:59,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 83 transitions. [2021-08-12 22:20:59,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:59,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 83 transitions. [2021-08-12 22:20:59,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,726 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,726 INFO L348 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2021-08-12 22:20:59,726 INFO L482 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 322 flow [2021-08-12 22:20:59,726 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,726 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:59,726 INFO L266 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] [2021-08-12 22:20:59,726 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-12 22:20:59,726 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:59,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:59,727 INFO L82 PathProgramCache]: Analyzing trace with hash 413003346, now seen corresponding path program 7 times [2021-08-12 22:20:59,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:59,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69064912] [2021-08-12 22:20:59,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:59,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:20:59,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:59,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:59,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:59,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:59,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:59,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:59,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:59,834 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:59,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69064912] [2021-08-12 22:20:59,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69064912] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:59,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:59,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 22:20:59,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690398152] [2021-08-12 22:20:59,835 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:59,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:59,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:59,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:59,837 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 31 [2021-08-12 22:20:59,837 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 322 flow. Second operand has 8 states, 8 states have (on average 22.125) internal successors, (177), 8 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,837 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:59,838 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 31 [2021-08-12 22:20:59,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:59,971 INFO L129 PetriNetUnfolder]: 19/183 cut-off events. [2021-08-12 22:20:59,971 INFO L130 PetriNetUnfolder]: For 139/169 co-relation queries the response was YES. [2021-08-12 22:20:59,972 INFO L84 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 183 events. 19/183 cut-off events. For 139/169 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 924 event pairs, 3 based on Foata normal form. 3/184 useless extension candidates. Maximal degree in co-relation 474. Up to 55 conditions per place. [2021-08-12 22:20:59,972 INFO L132 encePairwiseOnDemand]: 22/31 looper letters, 3 selfloop transitions, 8 changer transitions 35/69 dead transitions. [2021-08-12 22:20:59,972 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 69 transitions, 474 flow [2021-08-12 22:20:59,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-12 22:20:59,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-12 22:20:59,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2021-08-12 22:20:59,987 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7921146953405018 [2021-08-12 22:20:59,988 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 221 transitions. [2021-08-12 22:20:59,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 221 transitions. [2021-08-12 22:20:59,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:59,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 221 transitions. [2021-08-12 22:20:59,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 24.555555555555557) internal successors, (221), 9 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,990 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,990 INFO L348 CegarLoopForPetriNet]: 34 programPoint places, 37 predicate places. [2021-08-12 22:20:59,990 INFO L482 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 474 flow [2021-08-12 22:20:59,990 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 22.125) internal successors, (177), 8 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,990 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:59,990 INFO L266 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] [2021-08-12 22:20:59,991 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-12 22:20:59,991 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:59,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:59,991 INFO L82 PathProgramCache]: Analyzing trace with hash 2101371950, now seen corresponding path program 8 times [2021-08-12 22:20:59,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:59,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254635780] [2021-08-12 22:20:59,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:00,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:00,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:21:00,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:00,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:00,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:00,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:00,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:00,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-12 22:21:00,058 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:21:00,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:00,071 INFO L142 QuantifierPusher]: treesize reduction 6, result has 66.7 percent of original size [2021-08-12 22:21:00,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-12 22:21:00,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:00,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:00,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:00,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:00,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254635780] [2021-08-12 22:21:00,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254635780] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:00,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:00,085 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-12 22:21:00,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806156891] [2021-08-12 22:21:00,085 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-12 22:21:00,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:00,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-12 22:21:00,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-12 22:21:00,086 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 31 [2021-08-12 22:21:00,087 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 474 flow. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:00,087 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:00,087 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 31 [2021-08-12 22:21:00,087 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:00,150 INFO L129 PetriNetUnfolder]: 16/125 cut-off events. [2021-08-12 22:21:00,150 INFO L130 PetriNetUnfolder]: For 155/173 co-relation queries the response was YES. [2021-08-12 22:21:00,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 444 conditions, 125 events. 16/125 cut-off events. For 155/173 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 544 event pairs, 3 based on Foata normal form. 3/126 useless extension candidates. Maximal degree in co-relation 414. Up to 40 conditions per place. [2021-08-12 22:21:00,151 INFO L132 encePairwiseOnDemand]: 22/31 looper letters, 0 selfloop transitions, 0 changer transitions 61/61 dead transitions. [2021-08-12 22:21:00,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 61 transitions, 514 flow [2021-08-12 22:21:00,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-12 22:21:00,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-12 22:21:00,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2021-08-12 22:21:00,159 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8110599078341014 [2021-08-12 22:21:00,159 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 176 transitions. [2021-08-12 22:21:00,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 176 transitions. [2021-08-12 22:21:00,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:00,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 176 transitions. [2021-08-12 22:21:00,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:00,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:00,163 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:00,163 INFO L348 CegarLoopForPetriNet]: 34 programPoint places, 39 predicate places. [2021-08-12 22:21:00,163 INFO L482 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 514 flow [2021-08-12 22:21:00,163 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:00,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-12 22:21:00,361 INFO L742 CegarLoopForPetriNet]: Computed Owicki-Gries annotation of size 16678 in 190208255ns [2021-08-12 22:21:00,363 INFO L113 kiGriesValidityCheck]: 13#(or (and (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np26_1 (not v_np32_1) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np27_1) (not v_np9_1) (or (and (<= i 0) (<= 0 n1) (<= 1 n1) e1 (<= n2 (+ n1 1)) (<= 0 i) (<= (+ n1 1) n2) (<= 1 n2)) (and (<= i 0) (<= 0 n1) (<= n2 n1) e1 (<= n2 (+ n1 1)) (<= 0 i) (< n2 (+ n1 1)) (<= 1 n2))) (not v_np8_1) (not v_np1_1) (not v_np11_1) (not v_np14_1) v_np12_1 v_np33_1 (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np13_1) v_np31_1 (not v_np10_1) (not v_np16_1) v_np19_1 (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (not v_np29_1) (not v_np28_1) (not v_np0_1) (not v_np30_1)) (and (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) (not v_np32_1) (<= 0 i) (not v_np5_1) (<= 1 n2) (not v_np7_1) (not v_np3_1) (not v_np27_1) (not v_np9_1) (not v_np1_1) (not v_np11_1) (not v_np14_1) v_np12_1 v_np33_1 (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np13_1) v_np31_1 (not v_np10_1) (not v_np16_1) v_np19_1 (not v_np15_1) (<= i 0) (not v_np2_1) (<= 0 n1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (not v_np29_1) (not v_np26_1) (not v_np28_1) (not v_np0_1) v_np8_1 (not v_np30_1) e1 (<= n2 (+ n1 1))) (and (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) (not v_np32_1) (not v_np5_1) (<= 1 n2) (not v_np3_1) (not v_np27_1) (not v_np9_1) (not v_np8_1) (not v_np1_1) (not v_np11_1) (not v_np14_1) v_np12_1 v_np33_1 (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np13_1) v_np31_1 (not v_np10_1) (not v_np16_1) v_np19_1 (not v_np15_1) (not v_np2_1) (<= 0 n1) (not v_np17_1) (not v_np21_1) (<= 1 i) (not v_np18_1) (<= i1 0) (not v_np29_1) (not v_np26_1) (not v_np28_1) v_np7_1 (not v_np0_1) (not v_np30_1) (<= 0 i1) (<= i 1)) (and (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) (not v_np32_1) (<= 0 i) (not v_np5_1) (<= 1 n2) (not v_np7_1) (not v_np3_1) (not v_np27_1) (not v_np9_1) (not v_np8_1) (not v_np1_1) (not v_np11_1) (not v_np14_1) v_np12_1 v_np33_1 (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np13_1) v_np31_1 (not v_np10_1) v_np19_1 (not v_np15_1) (<= i 0) (not v_np2_1) (<= 0 n1) (not v_np17_1) (not v_np21_1) v_np16_1 (not v_np18_1) (not v_np29_1) (not v_np26_1) (not v_np28_1) (not v_np0_1) (not v_np30_1) (<= n2 (+ n1 1))) (and v_np29_1 (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) (not v_np32_1) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np27_1) (not v_np9_1) (not v_np8_1) (not v_np1_1) (not v_np11_1) (not v_np14_1) v_np12_1 v_np33_1 (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np13_1) v_np31_1 (not v_np10_1) (not v_np16_1) v_np19_1 (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (not v_np26_1) (not v_np28_1) (not v_np0_1) (not v_np30_1) (or (and (<= i 0) (<= 0 n1) (<= 1 n1) (<= n2 (+ n1 1)) (<= 0 i) (<= (+ n1 1) n2) (<= 1 n2)) (and (<= i 0) (<= 1 n1) (<= n2 n1) (<= 0 i) (<= 1 n2)) (and (<= i 0) (<= (+ n2 1) n1) (<= n2 n1) (<= 0 i) (<= 1 n2)) (and (<= i 0) (<= 0 n1) (<= n2 n1) (<= n2 (+ n1 1)) (<= 0 i) (< n2 (+ n1 1)) (<= 1 n2)))) (and (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) (not v_np32_1) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np27_1) (not v_np9_1) (not v_np8_1) (not v_np1_1) (not v_np11_1) (not v_np14_1) v_np12_1 v_np33_1 (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np13_1) v_np31_1 (not v_np10_1) (not v_np16_1) v_np19_1 (not v_np15_1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (not v_np29_1) v_np2_1 (not v_np26_1) (not v_np28_1) (not v_np0_1) (not v_np30_1) (or (and (<= n1 n2) (<= 0 n1) (<= 1 i) (<= n2 n1) (<= n2 (+ n1 1)) (<= i1 0) (<= 0 i1) (< n2 (+ n1 1)) (<= 1 n2) (<= i 1)) (and (< n1 (+ n2 1)) (<= 1 i) (<= 1 n1) (<= n2 n1) (<= i1 0) (<= 0 i1) (<= i 1) (<= 1 n2)))) (and (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) (not v_np5_1) (<= 1 n2) (not v_np7_1) (not v_np3_1) (not v_np27_1) (not v_np9_1) (not v_np8_1) v_np32_1 (not v_np1_1) (not v_np11_1) (not v_np14_1) v_np12_1 (not v_np24_1) (not v_np4_1) (not v_np13_1) v_np31_1 (not v_np10_1) (not v_np16_1) (not v_np15_1) (not v_np2_1) (<= 0 n1) (not v_np17_1) (not v_np21_1) (<= 1 i) (not v_np18_1) (<= i1 0) (not v_np19_1) (not v_np29_1) (not v_np26_1) (not v_np33_1) (not v_np28_1) v_np6_1 (not v_np0_1) (not v_np30_1) (<= 0 i1) (<= i 1)) (and (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) (not v_np32_1) (not v_np5_1) (<= 1 n2) (not v_np7_1) (not v_np27_1) (not v_np9_1) (not v_np8_1) (not v_np1_1) (not v_np11_1) (not v_np14_1) v_np12_1 v_np33_1 (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np13_1) v_np31_1 (not v_np10_1) (not v_np16_1) v_np19_1 (not v_np15_1) (not v_np2_1) (<= 0 n1) (not v_np17_1) (not v_np21_1) (<= 1 i) (not v_np18_1) (<= i1 0) (not v_np29_1) (not v_np26_1) v_np3_1 (not v_np28_1) (not v_np0_1) (not v_np30_1) (<= 0 i1) (<= i 1)) (and (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) (not v_np32_1) (not v_np5_1) (not v_np7_1) (or (and (<= i 0) (<= 0 n1) (<= 1 n1) (<= n2 (+ n1 1)) (<= 0 i) (<= (+ n1 1) n2) (<= 1 n2)) (and (<= n1 n2) (<= i 0) (<= 0 n1) (<= n2 n1) (<= n2 (+ n1 1)) (<= 0 i) (< n2 (+ n1 1)) (<= 1 n2)) (and (<= i 0) (< n1 (+ n2 1)) (<= 1 n1) (<= n2 n1) (<= 0 i) (<= 1 n2))) (not v_np3_1) (not v_np27_1) (not v_np9_1) (not v_np8_1) (not v_np1_1) (not v_np11_1) (not v_np14_1) v_np12_1 v_np33_1 (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np13_1) v_np31_1 (not v_np10_1) (not v_np16_1) v_np19_1 (not v_np2_1) (not v_np17_1) v_np15_1 (not v_np21_1) (not v_np18_1) (not v_np29_1) (not v_np26_1) (not v_np28_1) (not v_np0_1) (not v_np30_1)) (and (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) (not v_np32_1) (not v_np5_1) (or (and (<= n1 n2) (<= i 0) (<= 0 n1) (<= n2 n1) (<= 0 i) (<= n2 (+ n1 1)) (<= i1 0) (<= 0 i1) (< n2 (+ n1 1)) (<= 1 n2)) (and (<= i 0) (< n1 (+ n2 1)) (<= 1 n1) (<= n2 n1) (<= 0 i) (<= i1 0) (<= 0 i1) (<= 1 n2))) (not v_np7_1) (not v_np3_1) (not v_np27_1) (not v_np9_1) (not v_np8_1) (not v_np1_1) (not v_np11_1) (not v_np14_1) v_np12_1 v_np33_1 (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np13_1) v_np31_1 (not v_np10_1) (not v_np16_1) v_np19_1 (not v_np15_1) (not v_np2_1) (not v_np21_1) v_np17_1 (not v_np18_1) (not v_np29_1) (not v_np26_1) (not v_np28_1) (not v_np0_1) (not v_np30_1))) [2021-08-12 22:21:00,388 INFO L748 CegarLoopForPetriNet]: Checked inductivity and non-interference of Owicki-Gries annotation in 34271900ns [2021-08-12 22:21:00,389 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Invalid Owicki-Gries annotation at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.computeOwickiGries(CegarLoopForPetriNet.java:752) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:111) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:285) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:230) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:161) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:146) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-08-12 22:21:00,391 INFO L168 Benchmark]: Toolchain (without parser) took 2621.19 ms. Allocated memory was 224.4 MB in the beginning and 269.5 MB in the end (delta: 45.1 MB). Free memory was 205.4 MB in the beginning and 237.9 MB in the end (delta: -32.5 MB). Peak memory consumption was 11.1 MB. Max. memory is 8.0 GB. [2021-08-12 22:21:00,392 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 224.4 MB. Free memory is still 206.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-12 22:21:00,392 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.27 ms. Allocated memory is still 224.4 MB. Free memory was 205.4 MB in the beginning and 204.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-12 22:21:00,393 INFO L168 Benchmark]: Boogie Preprocessor took 13.67 ms. Allocated memory is still 224.4 MB. Free memory was 204.0 MB in the beginning and 202.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-12 22:21:00,393 INFO L168 Benchmark]: RCFGBuilder took 263.72 ms. Allocated memory is still 224.4 MB. Free memory was 202.8 MB in the beginning and 191.6 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-08-12 22:21:00,394 INFO L168 Benchmark]: TraceAbstraction took 2313.71 ms. Allocated memory was 224.4 MB in the beginning and 269.5 MB in the end (delta: 45.1 MB). Free memory was 191.1 MB in the beginning and 237.9 MB in the end (delta: -46.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-12 22:21:00,395 INFO L339 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 0.16 ms. Allocated memory is still 224.4 MB. Free memory is still 206.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 25.27 ms. Allocated memory is still 224.4 MB. Free memory was 205.4 MB in the beginning and 204.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.67 ms. Allocated memory is still 224.4 MB. Free memory was 204.0 MB in the beginning and 202.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 263.72 ms. Allocated memory is still 224.4 MB. Free memory was 202.8 MB in the beginning and 191.6 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2313.71 ms. Allocated memory was 224.4 MB in the beginning and 269.5 MB in the end (delta: 45.1 MB). Free memory was 191.1 MB in the beginning and 237.9 MB in the end (delta: -46.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Invalid Owicki-Gries annotation de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Invalid Owicki-Gries annotation: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.computeOwickiGries(CegarLoopForPetriNet.java:752) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...