/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/spaghetti.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 08:44:05,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 08:44:05,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 08:44:05,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-13 08:44:05,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 08:44:05,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 08:44:05,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 08:44:05,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 08:44:05,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 08:44:05,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 08:44:05,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 08:44:05,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 08:44:05,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 08:44:05,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 08:44:05,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 08:44:05,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 08:44:05,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 08:44:05,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 08:44:05,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 08:44:05,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 08:44:05,323 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 [2021-06-13 08:44:05,360 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 08:44:05,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 08:44:05,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 08:44:05,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 08:44:05,363 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 08:44:05,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 08:44:05,363 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 08:44:05,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 08:44:05,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 08:44:05,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 08:44:05,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 08:44:05,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 08:44:05,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 08:44:05,365 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 08:44:05,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 08:44:05,365 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 08:44:05,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 08:44:05,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 08:44:05,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 08:44:05,366 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 08:44:05,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 08:44:05,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 08:44:05,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 08:44:05,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 08:44:05,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 08:44:05,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 08:44:05,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 08:44:05,377 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 08:44:05,377 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 08:44:05,377 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 08:44:05,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 08:44:05,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 08:44:05,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 08:44:05,704 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-13 08:44:05,705 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-13 08:44:05,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/spaghetti.wvr.bpl [2021-06-13 08:44:05,705 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/spaghetti.wvr.bpl' [2021-06-13 08:44:05,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 08:44:05,730 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-13 08:44:05,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 08:44:05,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 08:44:05,731 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 08:44:05,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:44:05" (1/1) ... [2021-06-13 08:44:05,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:44:05" (1/1) ... [2021-06-13 08:44:05,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 08:44:05,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 08:44:05,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 08:44:05,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 08:44:05,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:44:05" (1/1) ... [2021-06-13 08:44:05,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:44:05" (1/1) ... [2021-06-13 08:44:05,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:44:05" (1/1) ... [2021-06-13 08:44:05,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:44:05" (1/1) ... [2021-06-13 08:44:05,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:44:05" (1/1) ... [2021-06-13 08:44:05,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:44:05" (1/1) ... [2021-06-13 08:44:05,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:44:05" (1/1) ... [2021-06-13 08:44:05,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 08:44:05,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 08:44:05,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 08:44:05,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 08:44:05,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:44:05" (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 [2021-06-13 08:44:05,860 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-13 08:44:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-13 08:44:05,862 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-13 08:44:05,863 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-13 08:44:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-13 08:44:05,863 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-13 08:44:05,864 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-13 08:44:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 08:44:05,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 08:44:05,864 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-13 08:44:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-13 08:44:05,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-13 08:44:05,865 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-13 08:44:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-13 08:44:05,865 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-13 08:44:05,866 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 08:44:05,996 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 08:44:05,996 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-13 08:44:05,997 INFO L202 PluginConnector]: Adding new model spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 08:44:05 BoogieIcfgContainer [2021-06-13 08:44:05,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 08:44:05,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 08:44:05,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 08:44:06,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 08:44:06,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:44:05" (1/2) ... [2021-06-13 08:44:06,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f90c226 and model type spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 08:44:06, skipping insertion in model container [2021-06-13 08:44:06,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 08:44:05" (2/2) ... [2021-06-13 08:44:06,004 INFO L111 eAbstractionObserver]: Analyzing ICFG spaghetti.wvr.bpl [2021-06-13 08:44:06,009 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 08:44:06,009 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 08:44:06,010 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 08:44:06,050 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-13 08:44:06,069 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-06-13 08:44:06,088 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 08:44:06,088 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 08:44:06,088 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 08:44:06,088 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 08:44:06,088 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 08:44:06,088 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 08:44:06,089 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 08:44:06,089 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 08:44:06,098 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 34 transitions, 100 flow [2021-06-13 08:44:06,120 INFO L129 PetriNetUnfolder]: 4/30 cut-off events. [2021-06-13 08:44:06,120 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-13 08:44:06,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 30 events. 4/30 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 61 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2021-06-13 08:44:06,124 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 34 transitions, 100 flow [2021-06-13 08:44:06,129 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 28 transitions, 80 flow [2021-06-13 08:44:06,142 INFO L129 PetriNetUnfolder]: 4/27 cut-off events. [2021-06-13 08:44:06,142 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-13 08:44:06,142 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:44:06,143 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:44:06,143 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:44:06,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:44:06,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1338509046, now seen corresponding path program 1 times [2021-06-13 08:44:06,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:44:06,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182537700] [2021-06-13 08:44:06,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:44:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:44:06,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:44:06,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:44:06,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:44:06,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:44:06,385 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:44:06,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:44:06,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:44:06,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:44:06,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:44:06,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:44:06,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182537700] [2021-06-13 08:44:06,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182537700] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:44:06,441 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:44:06,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 08:44:06,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837555315] [2021-06-13 08:44:06,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 08:44:06,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:44:06,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 08:44:06,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-13 08:44:06,471 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 34 [2021-06-13 08:44:06,474 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2021-06-13 08:44:06,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:44:06,474 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 34 [2021-06-13 08:44:06,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:44:06,696 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([87] L47-->thread4FINAL: Formula: (= v_x_1_12 0) InVars {} OutVars{x_1=v_x_1_12} AuxVars[] AssignedVars[x_1][25], [6#thread4FINALtrue, thread4Thread1of1ForFork2InUse, thread2Thread1of1ForFork0InUse, 9#L60true, 27#L26true, thread3Thread1of1ForFork1InUse, 28#L36true, thread1Thread1of1ForFork3InUse, 46#true, 14#L17true]) [2021-06-13 08:44:06,697 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-06-13 08:44:06,697 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-06-13 08:44:06,697 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-13 08:44:06,698 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-13 08:44:06,698 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([86] L47-->L49: Formula: (= v_x_1_8 (* v_x_1_9 10)) InVars {x_1=v_x_1_9} OutVars{x_1=v_x_1_8} AuxVars[] AssignedVars[x_1][26], [thread4Thread1of1ForFork2InUse, thread2Thread1of1ForFork0InUse, 9#L60true, 10#L49true, 27#L26true, thread3Thread1of1ForFork1InUse, 28#L36true, thread1Thread1of1ForFork3InUse, 46#true, 14#L17true]) [2021-06-13 08:44:06,698 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-06-13 08:44:06,698 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-06-13 08:44:06,699 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-13 08:44:06,699 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-13 08:44:06,720 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([87] L47-->thread4FINAL: Formula: (= v_x_1_12 0) InVars {} OutVars{x_1=v_x_1_12} AuxVars[] AssignedVars[x_1][23], [16#thread1FINALtrue, 51#(and (<= x_0 x_1) (<= x_0 0) (<= 0 x_0) (< x_1 (+ x_0 1))), 6#thread4FINALtrue, thread4Thread1of1ForFork2InUse, thread2Thread1of1ForFork0InUse, 9#L60true, 27#L26true, thread3Thread1of1ForFork1InUse, 28#L36true, thread1Thread1of1ForFork3InUse]) [2021-06-13 08:44:06,721 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-06-13 08:44:06,721 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-06-13 08:44:06,721 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-13 08:44:06,721 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-13 08:44:06,721 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([86] L47-->L49: Formula: (= v_x_1_8 (* v_x_1_9 10)) InVars {x_1=v_x_1_9} OutVars{x_1=v_x_1_8} AuxVars[] AssignedVars[x_1][24], [16#thread1FINALtrue, 48#(and (<= x_0 0) (<= 0 x_0)), thread4Thread1of1ForFork2InUse, thread2Thread1of1ForFork0InUse, 9#L60true, 10#L49true, 27#L26true, thread3Thread1of1ForFork1InUse, 28#L36true, thread1Thread1of1ForFork3InUse]) [2021-06-13 08:44:06,721 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-06-13 08:44:06,722 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-06-13 08:44:06,722 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-13 08:44:06,722 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-13 08:44:06,733 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([87] L47-->thread4FINAL: Formula: (= v_x_1_12 0) InVars {} OutVars{x_1=v_x_1_12} AuxVars[] AssignedVars[x_1][25], [33#L18true, 6#thread4FINALtrue, thread4Thread1of1ForFork2InUse, thread2Thread1of1ForFork0InUse, 9#L60true, 27#L26true, thread3Thread1of1ForFork1InUse, 28#L36true, thread1Thread1of1ForFork3InUse, 46#true]) [2021-06-13 08:44:06,733 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-13 08:44:06,733 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-13 08:44:06,733 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-13 08:44:06,733 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-06-13 08:44:06,734 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([86] L47-->L49: Formula: (= v_x_1_8 (* v_x_1_9 10)) InVars {x_1=v_x_1_9} OutVars{x_1=v_x_1_8} AuxVars[] AssignedVars[x_1][26], [33#L18true, thread4Thread1of1ForFork2InUse, thread2Thread1of1ForFork0InUse, 9#L60true, 10#L49true, 27#L26true, thread3Thread1of1ForFork1InUse, 28#L36true, thread1Thread1of1ForFork3InUse, 46#true]) [2021-06-13 08:44:06,734 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-13 08:44:06,734 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-06-13 08:44:06,734 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-13 08:44:06,734 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-13 08:44:06,796 INFO L129 PetriNetUnfolder]: 887/1286 cut-off events. [2021-06-13 08:44:06,797 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2021-06-13 08:44:06,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2502 conditions, 1286 events. 887/1286 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 5837 event pairs, 239 based on Foata normal form. 1/893 useless extension candidates. Maximal degree in co-relation 2477. Up to 664 conditions per place. [2021-06-13 08:44:06,814 INFO L132 encePairwiseOnDemand]: 25/34 looper letters, 29 selfloop transitions, 10 changer transitions 4/56 dead transitions. [2021-06-13 08:44:06,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 56 transitions, 222 flow [2021-06-13 08:44:06,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 08:44:06,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-13 08:44:06,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2021-06-13 08:44:06,826 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8529411764705882 [2021-06-13 08:44:06,826 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 116 transitions. [2021-06-13 08:44:06,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 116 transitions. [2021-06-13 08:44:06,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:44:06,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 116 transitions. [2021-06-13 08:44:06,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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) [2021-06-13 08:44:06,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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) [2021-06-13 08:44:06,845 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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) [2021-06-13 08:44:06,847 INFO L185 Difference]: Start difference. First operand has 37 places, 28 transitions, 80 flow. Second operand 4 states and 116 transitions. [2021-06-13 08:44:06,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 56 transitions, 222 flow [2021-06-13 08:44:06,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 56 transitions, 206 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-06-13 08:44:06,859 INFO L241 Difference]: Finished difference. Result has 35 places, 38 transitions, 142 flow [2021-06-13 08:44:06,861 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=35, PETRI_TRANSITIONS=38} [2021-06-13 08:44:06,862 INFO L335 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2021-06-13 08:44:06,862 INFO L482 AbstractCegarLoop]: Abstraction has has 35 places, 38 transitions, 142 flow [2021-06-13 08:44:06,862 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2021-06-13 08:44:06,862 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:44:06,863 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:44:06,863 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 08:44:06,863 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:44:06,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:44:06,865 INFO L82 PathProgramCache]: Analyzing trace with hash -921162618, now seen corresponding path program 2 times [2021-06-13 08:44:06,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:44:06,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302284088] [2021-06-13 08:44:06,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:44:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:44:06,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:44:06,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:44:06,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:44:06,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:44:06,941 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:44:06,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:44:06,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:44:06,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:44:06,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:44:06,958 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:44:06,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302284088] [2021-06-13 08:44:06,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302284088] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:44:06,961 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:44:06,961 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 08:44:06,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677675300] [2021-06-13 08:44:06,963 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 08:44:06,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:44:06,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 08:44:06,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-13 08:44:06,964 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 34 [2021-06-13 08:44:06,965 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 38 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2021-06-13 08:44:06,965 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:44:06,965 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 34 [2021-06-13 08:44:06,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:44:07,110 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([86] L47-->L49: Formula: (= v_x_1_8 (* v_x_1_9 10)) InVars {x_1=v_x_1_9} OutVars{x_1=v_x_1_8} AuxVars[] AssignedVars[x_1][25], [Black: 48#(and (<= x_0 0) (<= 0 x_0)), Black: 51#(and (<= x_0 x_1) (<= x_0 0) (<= 0 x_0) (< x_1 (+ x_0 1))), 57#true, 9#L60true, 10#L49true, 27#L26true, 28#L36true, 46#true, 14#L17true]) [2021-06-13 08:44:07,110 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-06-13 08:44:07,110 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-13 08:44:07,110 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-13 08:44:07,110 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-06-13 08:44:07,111 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([87] L47-->thread4FINAL: Formula: (= v_x_1_12 0) InVars {} OutVars{x_1=v_x_1_12} AuxVars[] AssignedVars[x_1][28], [6#thread4FINALtrue, Black: 48#(and (<= x_0 0) (<= 0 x_0)), Black: 51#(and (<= x_0 x_1) (<= x_0 0) (<= 0 x_0) (< x_1 (+ x_0 1))), 9#L60true, 27#L26true, 59#(and (<= 0 x_1) (<= x_1 0)), 28#L36true, 46#true, 14#L17true]) [2021-06-13 08:44:07,111 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-06-13 08:44:07,111 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-13 08:44:07,111 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-06-13 08:44:07,111 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-13 08:44:07,114 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([86] L47-->L49: Formula: (= v_x_1_8 (* v_x_1_9 10)) InVars {x_1=v_x_1_9} OutVars{x_1=v_x_1_8} AuxVars[] AssignedVars[x_1][25], [48#(and (<= x_0 0) (<= 0 x_0)), 16#thread1FINALtrue, Black: 51#(and (<= x_0 x_1) (<= x_0 0) (<= 0 x_0) (< x_1 (+ x_0 1))), Black: 46#true, 57#true, 9#L60true, 10#L49true, 27#L26true, 28#L36true]) [2021-06-13 08:44:07,115 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-06-13 08:44:07,115 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-13 08:44:07,115 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-13 08:44:07,115 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-06-13 08:44:07,115 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([87] L47-->thread4FINAL: Formula: (= v_x_1_12 0) InVars {} OutVars{x_1=v_x_1_12} AuxVars[] AssignedVars[x_1][30], [16#thread1FINALtrue, 51#(and (<= x_0 x_1) (<= x_0 0) (<= 0 x_0) (< x_1 (+ x_0 1))), Black: 48#(and (<= x_0 0) (<= 0 x_0)), 6#thread4FINALtrue, Black: 46#true, 9#L60true, 27#L26true, 59#(and (<= 0 x_1) (<= x_1 0)), 28#L36true]) [2021-06-13 08:44:07,115 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-06-13 08:44:07,115 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-13 08:44:07,115 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-13 08:44:07,115 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-06-13 08:44:07,137 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([86] L47-->L49: Formula: (= v_x_1_8 (* v_x_1_9 10)) InVars {x_1=v_x_1_9} OutVars{x_1=v_x_1_8} AuxVars[] AssignedVars[x_1][25], [33#L18true, Black: 48#(and (<= x_0 0) (<= 0 x_0)), Black: 51#(and (<= x_0 x_1) (<= x_0 0) (<= 0 x_0) (< x_1 (+ x_0 1))), 57#true, 9#L60true, 10#L49true, 27#L26true, 28#L36true, 46#true]) [2021-06-13 08:44:07,137 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-13 08:44:07,137 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-13 08:44:07,137 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-06-13 08:44:07,137 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-13 08:44:07,138 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([87] L47-->thread4FINAL: Formula: (= v_x_1_12 0) InVars {} OutVars{x_1=v_x_1_12} AuxVars[] AssignedVars[x_1][28], [33#L18true, 6#thread4FINALtrue, Black: 48#(and (<= x_0 0) (<= 0 x_0)), Black: 51#(and (<= x_0 x_1) (<= x_0 0) (<= 0 x_0) (< x_1 (+ x_0 1))), 9#L60true, 59#(and (<= 0 x_1) (<= x_1 0)), 27#L26true, 28#L36true, 46#true]) [2021-06-13 08:44:07,138 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-13 08:44:07,138 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-06-13 08:44:07,138 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-13 08:44:07,138 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-13 08:44:07,200 INFO L129 PetriNetUnfolder]: 993/1583 cut-off events. [2021-06-13 08:44:07,200 INFO L130 PetriNetUnfolder]: For 798/859 co-relation queries the response was YES. [2021-06-13 08:44:07,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3993 conditions, 1583 events. 993/1583 cut-off events. For 798/859 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8684 event pairs, 247 based on Foata normal form. 2/1560 useless extension candidates. Maximal degree in co-relation 3929. Up to 756 conditions per place. [2021-06-13 08:44:07,206 INFO L132 encePairwiseOnDemand]: 25/34 looper letters, 0 selfloop transitions, 0 changer transitions 72/72 dead transitions. [2021-06-13 08:44:07,206 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 72 transitions, 396 flow [2021-06-13 08:44:07,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 08:44:07,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-13 08:44:07,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2021-06-13 08:44:07,209 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8455882352941176 [2021-06-13 08:44:07,210 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 115 transitions. [2021-06-13 08:44:07,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 115 transitions. [2021-06-13 08:44:07,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:44:07,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 115 transitions. [2021-06-13 08:44:07,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2021-06-13 08:44:07,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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) [2021-06-13 08:44:07,213 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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) [2021-06-13 08:44:07,213 INFO L185 Difference]: Start difference. First operand has 35 places, 38 transitions, 142 flow. Second operand 4 states and 115 transitions. [2021-06-13 08:44:07,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 72 transitions, 396 flow [2021-06-13 08:44:07,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 72 transitions, 396 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-13 08:44:07,220 INFO L241 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2021-06-13 08:44:07,221 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2021-06-13 08:44:07,221 INFO L335 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2021-06-13 08:44:07,222 INFO L482 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2021-06-13 08:44:07,222 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2021-06-13 08:44:07,222 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 08:44:07,224 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 08:44:07,227 INFO L202 PluginConnector]: Adding new model spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 08:44:07 BasicIcfg [2021-06-13 08:44:07,227 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 08:44:07,229 INFO L168 Benchmark]: Toolchain (without parser) took 1497.44 ms. Allocated memory is still 194.0 MB. Free memory was 174.5 MB in the beginning and 145.7 MB in the end (delta: 28.8 MB). Peak memory consumption was 30.3 MB. Max. memory is 8.0 GB. [2021-06-13 08:44:07,229 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.14 ms. Allocated memory is still 194.0 MB. Free memory is still 175.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 08:44:07,230 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.72 ms. Allocated memory is still 194.0 MB. Free memory was 174.3 MB in the beginning and 173.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 08:44:07,231 INFO L168 Benchmark]: Boogie Preprocessor took 12.25 ms. Allocated memory is still 194.0 MB. Free memory was 173.0 MB in the beginning and 172.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 08:44:07,232 INFO L168 Benchmark]: RCFGBuilder took 222.20 ms. Allocated memory is still 194.0 MB. Free memory was 172.0 MB in the beginning and 161.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-06-13 08:44:07,233 INFO L168 Benchmark]: TraceAbstraction took 1228.09 ms. Allocated memory is still 194.0 MB. Free memory was 160.9 MB in the beginning and 145.7 MB in the end (delta: 15.2 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. [2021-06-13 08:44:07,238 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 0.14 ms. Allocated memory is still 194.0 MB. Free memory is still 175.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 30.72 ms. Allocated memory is still 194.0 MB. Free memory was 174.3 MB in the beginning and 173.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 12.25 ms. Allocated memory is still 194.0 MB. Free memory was 173.0 MB in the beginning and 172.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 222.20 ms. Allocated memory is still 194.0 MB. Free memory was 172.0 MB in the beginning and 161.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1228.09 ms. Allocated memory is still 194.0 MB. Free memory was 160.9 MB in the beginning and 145.7 MB in the end (delta: 15.2 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 66]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 9 procedures, 53 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 12.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1138.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 658.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 40.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 54 SDtfs, 14 SDslu, 14 SDs, 0 SdLazy, 100 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 151.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 109.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=1, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.1ms SsaConstructionTime, 51.7ms SatisfiabilityAnalysisTime, 242.3ms InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 160 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...