/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/regression/showcase/Bakery.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-12 21:50:41,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-12 21:50:41,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-12 21:50:41,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-12 21:50:41,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-12 21:50:41,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-12 21:50:41,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-12 21:50:41,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-12 21:50:41,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-12 21:50:41,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-12 21:50:41,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-12 21:50:41,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-12 21:50:41,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-12 21:50:41,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-12 21:50:41,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-12 21:50:41,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-12 21:50:41,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-12 21:50:41,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-12 21:50:41,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-12 21:50:41,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-12 21:50:41,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-12 21:50:41,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-12 21:50:41,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-12 21:50:41,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-12 21:50:41,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-12 21:50:41,879 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 21:50:41,914 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-12 21:50:41,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-12 21:50:41,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-12 21:50:41,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-12 21:50:41,916 INFO L138 SettingsManager]: * Use SBE=true [2021-08-12 21:50:41,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-12 21:50:41,917 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-12 21:50:41,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-12 21:50:41,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-12 21:50:41,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-12 21:50:41,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-12 21:50:41,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-12 21:50:41,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-12 21:50:41,918 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-12 21:50:41,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-12 21:50:41,918 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-12 21:50:41,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-12 21:50:41,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-12 21:50:41,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-12 21:50:41,918 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-12 21:50:41,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-12 21:50:41,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 21:50:41,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-12 21:50:41,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-12 21:50:41,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-12 21:50:41,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-12 21:50:41,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-12 21:50:41,919 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-12 21:50:41,920 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-12 21:50:41,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-12 21:50:41,920 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-12 21:50:42,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-12 21:50:42,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-12 21:50:42,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-12 21:50:42,207 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-12 21:50:42,208 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-12 21:50:42,209 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Bakery.bpl [2021-08-12 21:50:42,209 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Bakery.bpl' [2021-08-12 21:50:42,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-12 21:50:42,246 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-12 21:50:42,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-12 21:50:42,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-12 21:50:42,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-12 21:50:42,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:50:42" (1/1) ... [2021-08-12 21:50:42,267 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:50:42" (1/1) ... [2021-08-12 21:50:42,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-12 21:50:42,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-12 21:50:42,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-12 21:50:42,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-12 21:50:42,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:50:42" (1/1) ... [2021-08-12 21:50:42,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:50:42" (1/1) ... [2021-08-12 21:50:42,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:50:42" (1/1) ... [2021-08-12 21:50:42,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:50:42" (1/1) ... [2021-08-12 21:50:42,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:50:42" (1/1) ... [2021-08-12 21:50:42,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:50:42" (1/1) ... [2021-08-12 21:50:42,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:50:42" (1/1) ... [2021-08-12 21:50:42,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-12 21:50:42,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-12 21:50:42,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-12 21:50:42,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-12 21:50:42,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:50:42" (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 21:50:42,362 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process0 given in one single declaration [2021-08-12 21:50:42,363 INFO L130 BoogieDeclarations]: Found specification of procedure Process0 [2021-08-12 21:50:42,363 INFO L138 BoogieDeclarations]: Found implementation of procedure Process0 [2021-08-12 21:50:42,363 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2021-08-12 21:50:42,363 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2021-08-12 21:50:42,363 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2021-08-12 21:50:42,363 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-12 21:50:42,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-12 21:50:42,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-12 21:50:42,364 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 21:50:42,494 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-12 21:50:42,494 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-08-12 21:50:42,495 INFO L202 PluginConnector]: Adding new model Bakery.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 09:50:42 BoogieIcfgContainer [2021-08-12 21:50:42,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-12 21:50:42,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-12 21:50:42,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-12 21:50:42,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-12 21:50:42,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:50:42" (1/2) ... [2021-08-12 21:50:42,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56fb73a9 and model type Bakery.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 09:50:42, skipping insertion in model container [2021-08-12 21:50:42,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Bakery.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 09:50:42" (2/2) ... [2021-08-12 21:50:42,513 INFO L111 eAbstractionObserver]: Analyzing ICFG Bakery.bpl [2021-08-12 21:50:42,517 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-12 21:50:42,518 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-12 21:50:42,519 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-12 21:50:42,544 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-12 21:50:42,564 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-12 21:50:42,583 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 21:50:42,583 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-12 21:50:42,583 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 21:50:42,583 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 21:50:42,583 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 21:50:42,584 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 21:50:42,584 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 21:50:42,584 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 21:50:42,593 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 26 transitions, 62 flow [2021-08-12 21:50:42,612 INFO L129 PetriNetUnfolder]: 2/24 cut-off events. [2021-08-12 21:50:42,612 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 21:50:42,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 24 events. 2/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 45 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2021-08-12 21:50:42,615 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 26 transitions, 62 flow [2021-08-12 21:50:42,618 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 24 transitions, 54 flow [2021-08-12 21:50:42,624 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-08-12 21:50:42,625 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 21:50:42,625 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:50:42,626 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:50:42,626 INFO L430 AbstractCegarLoop]: === Iteration 1 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, Process0Err0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:50:42,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:50:42,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1948731573, now seen corresponding path program 1 times [2021-08-12 21:50:42,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:50:42,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007571443] [2021-08-12 21:50:42,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:50:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:50:42,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:42,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:50:42,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:42,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:50:42,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:42,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 21:50:42,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:42,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:50:42,772 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 21:50:42,773 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:50:42,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007571443] [2021-08-12 21:50:42,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007571443] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:50:42,774 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:50:42,774 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 21:50:42,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272571474] [2021-08-12 21:50:42,781 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 21:50:42,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:50:42,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 21:50:42,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-12 21:50:42,793 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 26 [2021-08-12 21:50:42,796 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 54 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 21:50:42,796 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:50:42,796 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 26 [2021-08-12 21:50:42,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:50:42,846 INFO L129 PetriNetUnfolder]: 17/73 cut-off events. [2021-08-12 21:50:42,846 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 21:50:42,847 INFO L84 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 73 events. 17/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 237 event pairs, 4 based on Foata normal form. 3/66 useless extension candidates. Maximal degree in co-relation 106. Up to 25 conditions per place. [2021-08-12 21:50:42,849 INFO L132 encePairwiseOnDemand]: 19/26 looper letters, 11 selfloop transitions, 6 changer transitions 0/29 dead transitions. [2021-08-12 21:50:42,849 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 98 flow [2021-08-12 21:50:42,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-12 21:50:42,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-08-12 21:50:42,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2021-08-12 21:50:42,859 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8365384615384616 [2021-08-12 21:50:42,860 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 87 transitions. [2021-08-12 21:50:42,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 87 transitions. [2021-08-12 21:50:42,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:50:42,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 87 transitions. [2021-08-12 21:50:42,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 21:50:42,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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 21:50:42,868 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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 21:50:42,869 INFO L348 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2021-08-12 21:50:42,869 INFO L482 AbstractCegarLoop]: Abstraction has has 28 places, 29 transitions, 98 flow [2021-08-12 21:50:42,869 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 21:50:42,869 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:50:42,869 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:50:42,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-12 21:50:42,870 INFO L430 AbstractCegarLoop]: === Iteration 2 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, Process0Err0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:50:42,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:50:42,871 INFO L82 PathProgramCache]: Analyzing trace with hash 281769241, now seen corresponding path program 1 times [2021-08-12 21:50:42,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:50:42,871 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538295065] [2021-08-12 21:50:42,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:50:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:50:42,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:42,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:50:42,900 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 21:50:42,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:50:42,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538295065] [2021-08-12 21:50:42,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538295065] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:50:42,902 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:50:42,902 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-12 21:50:42,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878195275] [2021-08-12 21:50:42,903 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 21:50:42,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:50:42,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 21:50:42,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 21:50:42,905 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 26 [2021-08-12 21:50:42,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 29 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 21:50:42,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:50:42,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 26 [2021-08-12 21:50:42,906 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:50:42,998 INFO L129 PetriNetUnfolder]: 49/151 cut-off events. [2021-08-12 21:50:42,998 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 21:50:43,000 INFO L84 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 151 events. 49/151 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 606 event pairs, 12 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 294. Up to 55 conditions per place. [2021-08-12 21:50:43,002 INFO L132 encePairwiseOnDemand]: 17/26 looper letters, 8 selfloop transitions, 7 changer transitions 0/35 dead transitions. [2021-08-12 21:50:43,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 35 transitions, 140 flow [2021-08-12 21:50:43,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 21:50:43,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 21:50:43,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2021-08-12 21:50:43,013 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7948717948717948 [2021-08-12 21:50:43,013 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 62 transitions. [2021-08-12 21:50:43,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 62 transitions. [2021-08-12 21:50:43,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:50:43,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 62 transitions. [2021-08-12 21:50:43,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 21:50:43,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 21:50:43,019 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 21:50:43,019 INFO L348 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2021-08-12 21:50:43,019 INFO L482 AbstractCegarLoop]: Abstraction has has 30 places, 35 transitions, 140 flow [2021-08-12 21:50:43,020 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 21:50:43,020 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:50:43,020 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:50:43,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-12 21:50:43,020 INFO L430 AbstractCegarLoop]: === Iteration 3 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, Process0Err0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:50:43,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:50:43,021 INFO L82 PathProgramCache]: Analyzing trace with hash 391116219, now seen corresponding path program 1 times [2021-08-12 21:50:43,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:50:43,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883472639] [2021-08-12 21:50:43,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:50:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:50:43,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:50:43,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:50:43,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:50:43,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 21:50:43,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:50:43,100 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 21:50:43,100 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:50:43,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883472639] [2021-08-12 21:50:43,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883472639] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:50:43,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:50:43,101 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 21:50:43,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403590086] [2021-08-12 21:50:43,101 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 21:50:43,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:50:43,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 21:50:43,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-12 21:50:43,103 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 26 [2021-08-12 21:50:43,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 35 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 21:50:43,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:50:43,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 26 [2021-08-12 21:50:43,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:50:43,234 INFO L129 PetriNetUnfolder]: 55/173 cut-off events. [2021-08-12 21:50:43,235 INFO L130 PetriNetUnfolder]: For 32/46 co-relation queries the response was YES. [2021-08-12 21:50:43,236 INFO L84 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 173 events. 55/173 cut-off events. For 32/46 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 492 event pairs, 13 based on Foata normal form. 8/174 useless extension candidates. Maximal degree in co-relation 412. Up to 68 conditions per place. [2021-08-12 21:50:43,237 INFO L132 encePairwiseOnDemand]: 19/26 looper letters, 14 selfloop transitions, 15 changer transitions 0/47 dead transitions. [2021-08-12 21:50:43,238 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 47 transitions, 246 flow [2021-08-12 21:50:43,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-12 21:50:43,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-12 21:50:43,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2021-08-12 21:50:43,242 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7628205128205128 [2021-08-12 21:50:43,242 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 119 transitions. [2021-08-12 21:50:43,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 119 transitions. [2021-08-12 21:50:43,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:50:43,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 119 transitions. [2021-08-12 21:50:43,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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 21:50:43,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 26.0) internal successors, (182), 7 states have internal predecessors, (182), 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 21:50:43,244 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 26.0) internal successors, (182), 7 states have internal predecessors, (182), 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 21:50:43,245 INFO L348 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2021-08-12 21:50:43,245 INFO L482 AbstractCegarLoop]: Abstraction has has 35 places, 47 transitions, 246 flow [2021-08-12 21:50:43,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 21:50:43,245 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:50:43,245 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:50:43,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-12 21:50:43,246 INFO L430 AbstractCegarLoop]: === Iteration 4 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, Process0Err0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:50:43,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:50:43,246 INFO L82 PathProgramCache]: Analyzing trace with hash 312980997, now seen corresponding path program 2 times [2021-08-12 21:50:43,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:50:43,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190125069] [2021-08-12 21:50:43,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:50:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:50:43,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:50:43,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:50:43,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:50:43,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 21:50:43,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:50:43,310 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 21:50:43,310 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:50:43,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190125069] [2021-08-12 21:50:43,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190125069] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:50:43,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:50:43,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 21:50:43,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910904169] [2021-08-12 21:50:43,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 21:50:43,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:50:43,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 21:50:43,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-12 21:50:43,317 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 26 [2021-08-12 21:50:43,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 47 transitions, 246 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 21:50:43,317 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:50:43,317 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 26 [2021-08-12 21:50:43,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:50:43,407 INFO L129 PetriNetUnfolder]: 59/196 cut-off events. [2021-08-12 21:50:43,407 INFO L130 PetriNetUnfolder]: For 111/143 co-relation queries the response was YES. [2021-08-12 21:50:43,410 INFO L84 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 196 events. 59/196 cut-off events. For 111/143 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 750 event pairs, 10 based on Foata normal form. 14/202 useless extension candidates. Maximal degree in co-relation 562. Up to 83 conditions per place. [2021-08-12 21:50:43,412 INFO L132 encePairwiseOnDemand]: 19/26 looper letters, 23 selfloop transitions, 16 changer transitions 0/57 dead transitions. [2021-08-12 21:50:43,412 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 57 transitions, 384 flow [2021-08-12 21:50:43,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 21:50:43,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 21:50:43,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2021-08-12 21:50:43,417 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7923076923076923 [2021-08-12 21:50:43,417 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 103 transitions. [2021-08-12 21:50:43,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 103 transitions. [2021-08-12 21:50:43,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:50:43,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 103 transitions. [2021-08-12 21:50:43,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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 21:50:43,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 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 21:50:43,420 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 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 21:50:43,420 INFO L348 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2021-08-12 21:50:43,420 INFO L482 AbstractCegarLoop]: Abstraction has has 39 places, 57 transitions, 384 flow [2021-08-12 21:50:43,421 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 21:50:43,421 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:50:43,421 INFO L266 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:50:43,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-12 21:50:43,422 INFO L430 AbstractCegarLoop]: === Iteration 5 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, Process0Err0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:50:43,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:50:43,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1610874611, now seen corresponding path program 1 times [2021-08-12 21:50:43,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:50:43,424 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953387296] [2021-08-12 21:50:43,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:50:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:50:43,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:50:43,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:50:43,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:50:43,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:50:43,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 21:50:43,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:50:43,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:50:43,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:50:43,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953387296] [2021-08-12 21:50:43,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953387296] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:50:43,513 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:50:43,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-12 21:50:43,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981885652] [2021-08-12 21:50:43,516 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-12 21:50:43,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:50:43,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-12 21:50:43,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-12 21:50:43,523 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 26 [2021-08-12 21:50:43,523 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 57 transitions, 384 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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 21:50:43,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:50:43,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 26 [2021-08-12 21:50:43,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:50:43,597 INFO L129 PetriNetUnfolder]: 39/140 cut-off events. [2021-08-12 21:50:43,597 INFO L130 PetriNetUnfolder]: For 162/192 co-relation queries the response was YES. [2021-08-12 21:50:43,598 INFO L84 FinitePrefix]: Finished finitePrefix Result has 505 conditions, 140 events. 39/140 cut-off events. For 162/192 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 418 event pairs, 6 based on Foata normal form. 14/150 useless extension candidates. Maximal degree in co-relation 482. Up to 64 conditions per place. [2021-08-12 21:50:43,600 INFO L132 encePairwiseOnDemand]: 19/26 looper letters, 18 selfloop transitions, 22 changer transitions 0/58 dead transitions. [2021-08-12 21:50:43,600 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 472 flow [2021-08-12 21:50:43,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-12 21:50:43,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-12 21:50:43,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2021-08-12 21:50:43,603 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7472527472527473 [2021-08-12 21:50:43,603 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 136 transitions. [2021-08-12 21:50:43,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 136 transitions. [2021-08-12 21:50:43,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:50:43,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 136 transitions. [2021-08-12 21:50:43,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 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 21:50:43,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 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 21:50:43,606 INFO L81 ComplementDD]: Finished complementDD. Result has 8 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 21:50:43,606 INFO L348 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2021-08-12 21:50:43,607 INFO L482 AbstractCegarLoop]: Abstraction has has 45 places, 58 transitions, 472 flow [2021-08-12 21:50:43,607 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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 21:50:43,607 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:50:43,607 INFO L266 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:50:43,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-12 21:50:43,608 INFO L430 AbstractCegarLoop]: === Iteration 6 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, Process0Err0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:50:43,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:50:43,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1026698523, now seen corresponding path program 2 times [2021-08-12 21:50:43,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:50:43,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915500413] [2021-08-12 21:50:43,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:50:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:50:43,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:50:43,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:50:43,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:50:43,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 21:50:43,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:50:43,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:50:43,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:50:43,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915500413] [2021-08-12 21:50:43,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915500413] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:50:43,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:50:43,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 21:50:43,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671030617] [2021-08-12 21:50:43,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 21:50:43,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:50:43,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 21:50:43,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-12 21:50:43,673 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 26 [2021-08-12 21:50:43,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 58 transitions, 472 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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 21:50:43,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:50:43,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 26 [2021-08-12 21:50:43,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:50:43,720 INFO L129 PetriNetUnfolder]: 37/135 cut-off events. [2021-08-12 21:50:43,720 INFO L130 PetriNetUnfolder]: For 290/342 co-relation queries the response was YES. [2021-08-12 21:50:43,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 135 events. 37/135 cut-off events. For 290/342 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 372 event pairs, 4 based on Foata normal form. 16/147 useless extension candidates. Maximal degree in co-relation 534. Up to 62 conditions per place. [2021-08-12 21:50:43,723 INFO L132 encePairwiseOnDemand]: 20/26 looper letters, 25 selfloop transitions, 17 changer transitions 0/60 dead transitions. [2021-08-12 21:50:43,723 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 60 transitions, 576 flow [2021-08-12 21:50:43,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 21:50:43,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 21:50:43,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2021-08-12 21:50:43,725 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7769230769230769 [2021-08-12 21:50:43,725 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 101 transitions. [2021-08-12 21:50:43,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 101 transitions. [2021-08-12 21:50:43,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:50:43,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 101 transitions. [2021-08-12 21:50:43,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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 21:50:43,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 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 21:50:43,727 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 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 21:50:43,727 INFO L348 CegarLoopForPetriNet]: 29 programPoint places, 20 predicate places. [2021-08-12 21:50:43,727 INFO L482 AbstractCegarLoop]: Abstraction has has 49 places, 60 transitions, 576 flow [2021-08-12 21:50:43,727 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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 21:50:43,727 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:50:43,727 INFO L266 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:50:43,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-12 21:50:43,728 INFO L430 AbstractCegarLoop]: === Iteration 7 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, Process0Err0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:50:43,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:50:43,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1459335517, now seen corresponding path program 1 times [2021-08-12 21:50:43,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:50:43,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150880559] [2021-08-12 21:50:43,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:50:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:50:43,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:50:43,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:50:43,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:50:43,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:50:43,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 21:50:43,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:43,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:50:43,786 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:50:43,786 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:50:43,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150880559] [2021-08-12 21:50:43,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150880559] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:50:43,787 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:50:43,787 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-12 21:50:43,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559621126] [2021-08-12 21:50:43,788 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-12 21:50:43,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:50:43,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-12 21:50:43,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-12 21:50:43,789 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 26 [2021-08-12 21:50:43,789 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 60 transitions, 576 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 21:50:43,789 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:50:43,789 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 26 [2021-08-12 21:50:43,789 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:50:43,838 INFO L129 PetriNetUnfolder]: 17/79 cut-off events. [2021-08-12 21:50:43,838 INFO L130 PetriNetUnfolder]: For 287/331 co-relation queries the response was YES. [2021-08-12 21:50:43,839 INFO L84 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 79 events. 17/79 cut-off events. For 287/331 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 152 event pairs, 0 based on Foata normal form. 16/95 useless extension candidates. Maximal degree in co-relation 395. Up to 43 conditions per place. [2021-08-12 21:50:43,841 INFO L132 encePairwiseOnDemand]: 20/26 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2021-08-12 21:50:43,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 54 transitions, 656 flow [2021-08-12 21:50:43,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-12 21:50:43,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-12 21:50:43,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2021-08-12 21:50:43,846 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7362637362637363 [2021-08-12 21:50:43,846 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 134 transitions. [2021-08-12 21:50:43,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 134 transitions. [2021-08-12 21:50:43,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:50:43,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 134 transitions. [2021-08-12 21:50:43,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 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 21:50:43,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 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 21:50:43,848 INFO L81 ComplementDD]: Finished complementDD. Result has 8 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 21:50:43,848 INFO L348 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2021-08-12 21:50:43,848 INFO L482 AbstractCegarLoop]: Abstraction has has 53 places, 54 transitions, 656 flow [2021-08-12 21:50:43,848 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 21:50:43,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-12 21:50:43,915 INFO L742 CegarLoopForPetriNet]: Computed Owicki-Gries annotation of size 8542 in 64061278ns [2021-08-12 21:50:43,917 INFO L113 kiGriesValidityCheck]: 21#(and (not v_np22_1) (not v_np23_1) v_np25_1 v_np27_1 (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (not v_np19_1) (not v_np26_1) (not v_np28_1) (not v_np0_1) v_np20_1) [2021-08-12 21:50:43,921 INFO L113 kiGriesValidityCheck]: 11#(or (and (not v_np25_1) (<= 1 n0) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np26_1 (<= 1 n1) v_np28_1 (not v_np5_1) (<= 0 n0) (<= (+ n0 1) n1) (not v_np3_1) (not v_np27_1) (not v_np9_1) (not v_np8_1) v_np10_1 (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) v_np16_1 (<= 2 n1) (not v_np18_1) (not v_np19_1) (<= 2 n0) v_np7_1 (not v_np0_1)) (and (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np26_1 v_np28_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) v_np10_1 (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np16_1) (not v_np15_1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (not v_np19_1) v_np2_1 (or (and (<= 1 n0) (<= 2 n0) (<= 0 n1) (= 0 critical) (<= 0 n0)) (and (<= 1 n0) (<= 0 n1) (= 0 critical)) (and (<= 2 n0) (<= 0 n1) (= 0 critical) (<= 0 n0))) v_np0_1) (and (not v_np25_1) (<= 1 n0) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np26_1 (<= 1 n1) (= 0 critical) v_np28_1 (not v_np5_1) (<= 0 n0) (<= (+ n0 1) n1) (not v_np27_1) (not v_np9_1) (not v_np8_1) v_np10_1 (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np16_1) (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) (<= 2 n1) (not v_np18_1) (not v_np19_1) v_np3_1 (<= 2 n0) v_np7_1 (not v_np0_1)) (and (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np26_1 v_np28_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) v_np10_1 (not v_np1_1) (not v_np11_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np16_1) (not v_np15_1) v_np14_1 (not v_np17_1) (not v_np21_1) (not v_np18_1) (not v_np19_1) v_np2_1 (not v_np0_1) (or (and (<= 1 n0) (<= 2 n0) (<= 0 n1) (= 0 critical) (<= 0 n0)) (and (<= 1 n0) (<= 0 n1) (= 0 critical)) (and (<= 2 n0) (<= 0 n1) (= 0 critical) (<= 0 n0)))) (and (not v_np25_1) (not v_np22_1) (not v_np20_1) v_np26_1 v_np28_1 (not v_np7_1) (not v_np3_1) (not v_np27_1) (not v_np9_1) (not v_np8_1) v_np10_1 (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np16_1) (not v_np15_1) (or (and (<= 1 n1) (<= 0 n0)) (and (<= 0 n1) (<= 2 n1) (<= 0 n0)) (and (<= 0 n1) (<= 1 n1) (<= 2 n1) (<= 0 n0))) (not v_np2_1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (not v_np19_1) v_np5_1 (not v_np0_1) v_np23_1) (and (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np26_1 v_np28_1 v_np9_1 (not v_np7_1) (not v_np3_1) (or (and (<= 0 n1) (<= 1 n1) (= 0 critical) (<= 2 n1) (<= 0 n0)) (and (<= 0 n1) (= 0 critical) (<= 2 n1) (<= 0 n0)) (and (<= 1 n1) (= 0 critical) (<= 0 n0))) (not v_np27_1) (not v_np8_1) v_np10_1 (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np16_1) (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (not v_np19_1) v_np5_1 (not v_np0_1)) (and (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np26_1 v_np28_1 (not v_np5_1) (not v_np3_1) (not v_np27_1) (not v_np9_1) (not v_np8_1) v_np10_1 (not v_np1_1) (not v_np11_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np16_1) (not v_np15_1) (not v_np2_1) v_np14_1 (not v_np17_1) (not v_np21_1) (not v_np18_1) (not v_np19_1) v_np7_1 (not v_np0_1) (or (and (<= 1 n0) (= 0 critical) (<= 2 n1) (<= (+ n0 1) n1)) (and (<= 2 n0) (= 0 critical) (<= 1 n1) (<= 0 n0) (<= (+ n0 1) n1)) (and (<= 1 n0) (<= 2 n0) (= 0 critical) (<= 1 n1) (<= 2 n1) (<= 0 n0) (<= (+ n0 1) n1)) (and (<= 1 n0) (<= 2 n0) (<= 1 n1) (= 0 critical) (<= 2 n1) (<= 0 n0) (<= (+ n0 1) n1)))) (and (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np26_1 v_np28_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) v_np10_1 (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_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) (or (and (<= 2 n0) (<= 1 n1) (= 0 critical) (<= (+ n1 1) n0)) (and (<= 1 n0) (<= 0 n1) (= 0 critical) (<= 2 n1) (<= (+ n1 1) n0)) (and (<= 1 n0) (<= 2 n0) (<= 0 n1) (<= 1 n1) (= 0 critical) (<= 2 n1) (<= (+ n1 1) n0))) v_np6_1 (not v_np0_1)) (and (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np26_1 v_np28_1 (not v_np7_1) (not v_np3_1) (or (and (<= 0 n1) (<= 1 n1) (= 0 critical) (<= 2 n1) (<= 0 n0)) (and (<= 0 n1) (= 0 critical) (<= 2 n1) (<= 0 n0)) (and (<= 1 n1) (= 0 critical) (<= 0 n0))) (not v_np27_1) (not v_np9_1) (not v_np8_1) v_np10_1 (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np12_1) (not v_np13_1) (not v_np16_1) (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (not v_np19_1) v_np4_1 v_np5_1 (not v_np0_1)) (and (not v_np25_1) (<= 1 n0) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np26_1 (<= 1 n1) (= 0 critical) v_np28_1 (not v_np5_1) (<= 0 n0) (<= (+ n0 1) n1) (not v_np3_1) (not v_np27_1) (not v_np9_1) (not v_np8_1) v_np10_1 (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np16_1) (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) (<= 2 n1) (not v_np18_1) (not v_np19_1) (<= 2 n0) v_np7_1 v_np0_1) (and (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np26_1 v_np28_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) v_np10_1 (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np16_1) (not v_np15_1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (not v_np19_1) v_np2_1 v_np6_1 (not v_np0_1) (or (and (<= 1 n0) (<= 2 n0) (<= 0 n1) (= 0 critical) (<= 0 n0)) (and (<= 1 n0) (<= 0 n1) (= 0 critical)) (and (<= 2 n0) (<= 0 n1) (= 0 critical) (<= 0 n0)))) (and (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np26_1 v_np28_1 (not v_np5_1) (not v_np3_1) (not v_np27_1) (not v_np9_1) (not v_np8_1) v_np10_1 (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np16_1) (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) (or (and (<= 2 n0) (<= 1 n1) (= 0 critical) (<= (+ n1 1) n0)) (and (<= 1 n0) (= 0 critical) (<= 2 n1) (<= (+ n0 1) n1)) (and (<= 1 n0) (<= 0 n1) (= 0 critical) (<= 2 n1) (<= (+ n1 1) n0)) (and (<= 2 n0) (= 0 critical) (<= 1 n1) (<= 0 n0) (<= (+ n0 1) n1)) (and (<= 1 n0) (<= 2 n0) (= 0 critical) (<= 1 n1) (<= 2 n1) (<= 0 n0) (<= (+ n0 1) n1)) (and (<= 1 n0) (<= 2 n0) (<= 1 n1) (= 0 critical) (<= 2 n1) (<= 0 n0) (<= (+ n0 1) n1)) (and (<= 1 n0) (<= 2 n0) (<= 0 n1) (<= 1 n1) (= 0 critical) (<= 2 n1) (<= (+ n1 1) n0))) (not v_np18_1) (not v_np19_1) v_np6_1 v_np7_1 (not v_np0_1)) (and (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np26_1 v_np28_1 (not v_np3_1) (or (and (<= 0 n1) (<= 1 n1) (= 0 critical) (<= 2 n1) (<= 0 n0)) (and (<= 0 n1) (= 0 critical) (<= 2 n1) (<= 0 n0)) (and (<= 1 n1) (= 0 critical) (<= 0 n0))) (not v_np27_1) (not v_np9_1) (not v_np8_1) v_np10_1 (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np16_1) (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (not v_np19_1) v_np5_1 v_np7_1 (not v_np0_1)) (and (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np26_1 v_np28_1 (or (and (<= 1 n0) (<= 0 n1)) (and (<= 1 n0) (<= 2 n0) (<= 0 n1) (<= 0 n0)) (and (<= 2 n0) (<= 0 n1) (<= 0 n0))) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np27_1) (not v_np9_1) (not v_np8_1) v_np10_1 (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np15_1) (not v_np17_1) (not v_np21_1) v_np16_1 (not v_np18_1) (not v_np19_1) v_np2_1 (not v_np0_1)) (and (not v_np25_1) (or (and (<= 0 n1) (<= 1 n1) (= 0 critical) (<= 0 n0)) (and (<= 0 n1) (= 0 critical) (<= 0 n0))) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np26_1 v_np28_1 (not v_np7_1) (not v_np3_1) (not v_np27_1) (not v_np9_1) (not v_np8_1) v_np10_1 (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np16_1) (not v_np15_1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (not v_np19_1) v_np2_1 v_np5_1 (not v_np0_1)) (and (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np26_1 v_np28_1 (not v_np5_1) (not v_np7_1) (not v_np27_1) (not v_np9_1) (not v_np8_1) v_np10_1 (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np16_1) (not v_np15_1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (not v_np19_1) v_np2_1 v_np3_1 (not v_np0_1) (or (and (<= 1 n0) (<= 2 n0) (<= 0 n1) (= 0 critical) (<= 0 n0)) (and (<= 1 n0) (<= 0 n1) (= 0 critical)) (and (<= 2 n0) (<= 0 n1) (= 0 critical) (<= 0 n0)))) (and (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np26_1 v_np28_1 (not v_np7_1) (not v_np3_1) (or (and (<= 0 n1) (<= 1 n1) (= 0 critical) (<= 2 n1) (<= 0 n0)) (and (<= 0 n1) (= 0 critical) (<= 2 n1) (<= 0 n0)) (and (<= 1 n1) (= 0 critical) (<= 0 n0))) (not v_np27_1) (not v_np9_1) (not v_np8_1) v_np10_1 (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_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) v_np5_1 (not v_np0_1))) [2021-08-12 21:50:43,940 INFO L748 CegarLoopForPetriNet]: Checked inductivity and non-interference of Owicki-Gries annotation in 27062570ns [2021-08-12 21:50:43,940 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 21:50:43,943 INFO L168 Benchmark]: Toolchain (without parser) took 1696.38 ms. Allocated memory is still 197.1 MB. Free memory was 177.1 MB in the beginning and 172.3 MB in the end (delta: 4.8 MB). Peak memory consumption was 5.8 MB. Max. memory is 8.0 GB. [2021-08-12 21:50:43,943 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.54 ms. Allocated memory is still 197.1 MB. Free memory was 178.2 MB in the beginning and 178.1 MB in the end (delta: 88.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-12 21:50:43,944 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.64 ms. Allocated memory is still 197.1 MB. Free memory was 177.0 MB in the beginning and 175.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-12 21:50:43,944 INFO L168 Benchmark]: Boogie Preprocessor took 19.91 ms. Allocated memory is still 197.1 MB. Free memory was 175.5 MB in the beginning and 174.7 MB in the end (delta: 854.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-12 21:50:43,944 INFO L168 Benchmark]: RCFGBuilder took 199.35 ms. Allocated memory is still 197.1 MB. Free memory was 174.6 MB in the beginning and 164.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-08-12 21:50:43,945 INFO L168 Benchmark]: TraceAbstraction took 1433.99 ms. Allocated memory is still 197.1 MB. Free memory was 164.0 MB in the beginning and 172.3 MB in the end (delta: -8.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-12 21:50:43,947 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 0.54 ms. Allocated memory is still 197.1 MB. Free memory was 178.2 MB in the beginning and 178.1 MB in the end (delta: 88.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 27.64 ms. Allocated memory is still 197.1 MB. Free memory was 177.0 MB in the beginning and 175.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 19.91 ms. Allocated memory is still 197.1 MB. Free memory was 175.5 MB in the beginning and 174.7 MB in the end (delta: 854.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 199.35 ms. Allocated memory is still 197.1 MB. Free memory was 174.6 MB in the beginning and 164.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1433.99 ms. Allocated memory is still 197.1 MB. Free memory was 164.0 MB in the beginning and 172.3 MB in the end (delta: -8.3 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...