/usr/bin/java -Xmx16000000000 -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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 03:54:50,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 03:54:50,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 03:54:50,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-29 03:54:50,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-29 03:54:50,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-29 03:54:50,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-29 03:54:50,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-29 03:54:50,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-29 03:54:50,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-29 03:54:50,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-29 03:54:50,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2021-04-29 03:54:50,985 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-RepeatedSemanticLbeWithPredicates.epf [2021-04-29 03:54:51,042 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 03:54:51,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 03:54:51,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 03:54:51,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 03:54:51,047 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 03:54:51,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 03:54:51,047 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 03:54:51,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 03:54:51,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 03:54:51,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 03:54:51,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 03:54:51,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 03:54:51,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 03:54:51,050 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 03:54:51,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 03:54:51,050 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 03:54:51,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 03:54:51,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 03:54:51,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 03:54:51,051 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 03:54:51,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 03:54:51,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 03:54:51,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 03:54:51,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 03:54:51,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 03:54:51,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 03:54:51,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 03:54:51,053 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 03:54:51,053 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 03:54:51,053 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 03:54:51,054 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 03:54:51,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 03:54:51,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 03:54:51,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 03:54:51,491 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-04-29 03:54:51,492 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-04-29 03:54:51,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl [2021-04-29 03:54:51,493 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl' [2021-04-29 03:54:51,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 03:54:51,566 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-29 03:54:51,567 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 03:54:51,567 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 03:54:51,568 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 03:54:51,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:54:51" (1/1) ... [2021-04-29 03:54:51,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:54:51" (1/1) ... [2021-04-29 03:54:51,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 03:54:51,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 03:54:51,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 03:54:51,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 03:54:51,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:54:51" (1/1) ... [2021-04-29 03:54:51,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:54:51" (1/1) ... [2021-04-29 03:54:51,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:54:51" (1/1) ... [2021-04-29 03:54:51,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:54:51" (1/1) ... [2021-04-29 03:54:51,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:54:51" (1/1) ... [2021-04-29 03:54:51,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:54:51" (1/1) ... [2021-04-29 03:54:51,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:54:51" (1/1) ... [2021-04-29 03:54:51,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 03:54:51,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 03:54:51,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 03:54:51,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 03:54:51,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:54:51" (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 [2021-04-29 03:54:51,710 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-04-29 03:54:51,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 03:54:51,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 03:54:51,711 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread1 given in one single declaration [2021-04-29 03:54:51,711 INFO L130 BoogieDeclarations]: Found specification of procedure Thread1 [2021-04-29 03:54:51,711 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread1 [2021-04-29 03:54:51,712 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-29 03:54:51,865 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 03:54:51,865 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-04-29 03:54:51,867 INFO L202 PluginConnector]: Adding new model cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 03:54:51 BoogieIcfgContainer [2021-04-29 03:54:51,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 03:54:51,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 03:54:51,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 03:54:51,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 03:54:51,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:54:51" (1/2) ... [2021-04-29 03:54:51,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb42a21 and model type cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 03:54:51, skipping insertion in model container [2021-04-29 03:54:51,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 03:54:51" (2/2) ... [2021-04-29 03:54:51,875 INFO L111 eAbstractionObserver]: Analyzing ICFG cutoff_test.bpl [2021-04-29 03:54:51,882 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 03:54:51,886 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 03:54:51,887 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 03:54:51,914 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-04-29 03:54:51,936 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-04-29 03:54:51,962 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 03:54:51,962 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 03:54:51,962 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 03:54:51,962 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 03:54:51,963 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 03:54:51,963 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 03:54:51,963 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 03:54:51,963 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 03:54:51,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 16 places, 15 transitions, 38 flow [2021-04-29 03:54:51,995 INFO L129 PetriNetUnfolder]: 3/14 cut-off events. [2021-04-29 03:54:51,995 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-04-29 03:54:51,998 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19 conditions, 14 events. 3/14 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 9. Up to 2 conditions per place. [2021-04-29 03:54:51,999 INFO L82 GeneralOperation]: Start removeDead. Operand has 16 places, 15 transitions, 38 flow [2021-04-29 03:54:52,003 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 13 places, 12 transitions, 30 flow [2021-04-29 03:54:52,005 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:54:52,022 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 13 places, 12 transitions, 30 flow [2021-04-29 03:54:52,026 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 13 places, 12 transitions, 30 flow [2021-04-29 03:54:52,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 13 places, 12 transitions, 30 flow [2021-04-29 03:54:52,033 INFO L129 PetriNetUnfolder]: 3/12 cut-off events. [2021-04-29 03:54:52,033 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-04-29 03:54:52,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17 conditions, 12 events. 3/12 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 0/9 useless extension candidates. Maximal degree in co-relation 9. Up to 2 conditions per place. [2021-04-29 03:54:52,036 INFO L146 LiptonReduction]: Number of co-enabled transitions 28 [2021-04-29 03:54:52,101 INFO L158 LiptonReduction]: Checked pairs total: 36 [2021-04-29 03:54:52,101 INFO L160 LiptonReduction]: Total number of compositions: 2 [2021-04-29 03:54:52,104 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 100 [2021-04-29 03:54:52,119 INFO L129 PetriNetUnfolder]: 4/12 cut-off events. [2021-04-29 03:54:52,119 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-04-29 03:54:52,119 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:54:52,120 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:54:52,120 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 03:54:52,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:54:52,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1053270385, now seen corresponding path program 1 times [2021-04-29 03:54:52,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:54:52,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984437424] [2021-04-29 03:54:52,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:54:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:54:52,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:54:52,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:54:52,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:54:52,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:54:52,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:54:52,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:54:52,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:54:52,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984437424] [2021-04-29 03:54:52,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:54:52,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-29 03:54:52,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434008177] [2021-04-29 03:54:52,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 03:54:52,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:54:52,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 03:54:52,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 03:54:52,319 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 17 [2021-04-29 03:54:52,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 13 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2021-04-29 03:54:52,321 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:54:52,321 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 17 [2021-04-29 03:54:52,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:54:52,357 INFO L129 PetriNetUnfolder]: 6/24 cut-off events. [2021-04-29 03:54:52,357 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 03:54:52,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 24 events. 6/24 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 50 event pairs, 0 based on Foata normal form. 1/19 useless extension candidates. Maximal degree in co-relation 34. Up to 10 conditions per place. [2021-04-29 03:54:52,361 INFO L132 encePairwiseOnDemand]: 13/17 looper letters, 3 selfloop transitions, 2 changer transitions 7/16 dead transitions. [2021-04-29 03:54:52,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 16 transitions, 54 flow [2021-04-29 03:54:52,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 03:54:52,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 03:54:52,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2021-04-29 03:54:52,387 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8235294117647058 [2021-04-29 03:54:52,391 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 42 transitions. [2021-04-29 03:54:52,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 42 transitions. [2021-04-29 03:54:52,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:54:52,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 42 transitions. [2021-04-29 03:54:52,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-04-29 03:54:52,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 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) [2021-04-29 03:54:52,414 INFO L81 ComplementDD]: Finished complementDD. Result 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) [2021-04-29 03:54:52,419 INFO L185 Difference]: Start difference. First operand has 13 places, 13 transitions, 32 flow. Second operand 3 states and 42 transitions. [2021-04-29 03:54:52,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 16 transitions, 54 flow [2021-04-29 03:54:52,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 16 transitions, 50 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 03:54:52,431 INFO L241 Difference]: Finished difference. Result has 14 places, 8 transitions, 26 flow [2021-04-29 03:54:52,433 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=14, PETRI_TRANSITIONS=8} [2021-04-29 03:54:52,440 INFO L343 CegarLoopForPetriNet]: 13 programPoint places, 1 predicate places. [2021-04-29 03:54:52,440 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:54:52,441 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 14 places, 8 transitions, 26 flow [2021-04-29 03:54:52,441 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 14 places, 8 transitions, 26 flow [2021-04-29 03:54:52,442 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 12 places, 8 transitions, 26 flow [2021-04-29 03:54:52,449 INFO L129 PetriNetUnfolder]: 1/8 cut-off events. [2021-04-29 03:54:52,449 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-04-29 03:54:52,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16 conditions, 8 events. 1/8 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 0/8 useless extension candidates. Maximal degree in co-relation 5. Up to 3 conditions per place. [2021-04-29 03:54:52,453 INFO L146 LiptonReduction]: Number of co-enabled transitions 10 [2021-04-29 03:54:52,470 INFO L158 LiptonReduction]: Checked pairs total: 3 [2021-04-29 03:54:52,471 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:54:52,471 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 31 [2021-04-29 03:54:52,473 INFO L480 AbstractCegarLoop]: Abstraction has has 12 places, 8 transitions, 26 flow [2021-04-29 03:54:52,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2021-04-29 03:54:52,473 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:54:52,474 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:54:52,474 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 03:54:52,474 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 03:54:52,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:54:52,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1439823025, now seen corresponding path program 2 times [2021-04-29 03:54:52,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:54:52,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042999978] [2021-04-29 03:54:52,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:54:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:54:52,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:54:52,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:54:52,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:54:52,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:54:52,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:54:52,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:54:52,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:54:52,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:54:52,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:54:52,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042999978] [2021-04-29 03:54:52,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:54:52,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 03:54:52,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218367981] [2021-04-29 03:54:52,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 03:54:52,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:54:52,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 03:54:52,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-29 03:54:52,517 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 17 [2021-04-29 03:54:52,517 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 8 transitions, 26 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-04-29 03:54:52,517 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:54:52,518 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 17 [2021-04-29 03:54:52,518 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:54:52,540 INFO L129 PetriNetUnfolder]: 1/11 cut-off events. [2021-04-29 03:54:52,541 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-04-29 03:54:52,541 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 11 events. 1/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 6. Up to 4 conditions per place. [2021-04-29 03:54:52,541 INFO L132 encePairwiseOnDemand]: 13/17 looper letters, 2 selfloop transitions, 3 changer transitions 0/9 dead transitions. [2021-04-29 03:54:52,542 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 9 transitions, 38 flow [2021-04-29 03:54:52,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 03:54:52,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 03:54:52,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2021-04-29 03:54:52,544 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7352941176470589 [2021-04-29 03:54:52,544 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 50 transitions. [2021-04-29 03:54:52,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 50 transitions. [2021-04-29 03:54:52,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:54:52,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 50 transitions. [2021-04-29 03:54:52,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-04-29 03:54:52,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2021-04-29 03:54:52,547 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2021-04-29 03:54:52,547 INFO L185 Difference]: Start difference. First operand has 12 places, 8 transitions, 26 flow. Second operand 4 states and 50 transitions. [2021-04-29 03:54:52,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 9 transitions, 38 flow [2021-04-29 03:54:52,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 9 transitions, 32 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-04-29 03:54:52,550 INFO L241 Difference]: Finished difference. Result has 14 places, 9 transitions, 34 flow [2021-04-29 03:54:52,550 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=34, PETRI_PLACES=14, PETRI_TRANSITIONS=9} [2021-04-29 03:54:52,551 INFO L343 CegarLoopForPetriNet]: 13 programPoint places, 1 predicate places. [2021-04-29 03:54:52,551 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:54:52,551 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 14 places, 9 transitions, 34 flow [2021-04-29 03:54:52,552 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 14 places, 9 transitions, 34 flow [2021-04-29 03:54:52,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 14 places, 9 transitions, 34 flow [2021-04-29 03:54:52,557 INFO L129 PetriNetUnfolder]: 1/11 cut-off events. [2021-04-29 03:54:52,557 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-04-29 03:54:52,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 11 events. 1/11 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 7. Up to 4 conditions per place. [2021-04-29 03:54:52,558 INFO L146 LiptonReduction]: Number of co-enabled transitions 8 [2021-04-29 03:54:52,630 INFO L158 LiptonReduction]: Checked pairs total: 2 [2021-04-29 03:54:52,631 INFO L160 LiptonReduction]: Total number of compositions: 1 [2021-04-29 03:54:52,634 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 83 [2021-04-29 03:54:52,636 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 42 flow [2021-04-29 03:54:52,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-04-29 03:54:52,639 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:54:52,639 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:54:52,640 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 03:54:52,640 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 03:54:52,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:54:52,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1433999365, now seen corresponding path program 3 times [2021-04-29 03:54:52,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:54:52,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524748424] [2021-04-29 03:54:52,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:54:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-29 03:54:52,661 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-29 03:54:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-29 03:54:52,667 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-29 03:54:52,682 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-04-29 03:54:52,683 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-04-29 03:54:52,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-29 03:54:52,697 INFO L202 PluginConnector]: Adding new model cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 03:54:52 BasicIcfg [2021-04-29 03:54:52,697 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 03:54:52,699 INFO L168 Benchmark]: Toolchain (without parser) took 1175.43 ms. Allocated memory is still 314.6 MB. Free memory was 297.8 MB in the beginning and 293.1 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.0 GB. [2021-04-29 03:54:52,700 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 314.6 MB. Free memory was 298.9 MB in the beginning and 298.8 MB in the end (delta: 78.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 03:54:52,701 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.28 ms. Allocated memory is still 314.6 MB. Free memory was 294.9 MB in the beginning and 293.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 03:54:52,702 INFO L168 Benchmark]: Boogie Preprocessor took 18.02 ms. Allocated memory is still 314.6 MB. Free memory was 293.4 MB in the beginning and 292.5 MB in the end (delta: 929.7 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 03:54:52,703 INFO L168 Benchmark]: RCFGBuilder took 246.95 ms. Allocated memory is still 314.6 MB. Free memory was 292.5 MB in the beginning and 294.4 MB in the end (delta: -1.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.0 GB. [2021-04-29 03:54:52,704 INFO L168 Benchmark]: TraceAbstraction took 828.03 ms. Allocated memory is still 314.6 MB. Free memory was 294.0 MB in the beginning and 293.1 MB in the end (delta: 880.7 kB). Peak memory consumption was 1.2 MB. Max. memory is 16.0 GB. [2021-04-29 03:54:52,707 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 0.21 ms. Allocated memory is still 314.6 MB. Free memory was 298.9 MB in the beginning and 298.8 MB in the end (delta: 78.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 33.28 ms. Allocated memory is still 314.6 MB. Free memory was 294.9 MB in the beginning and 293.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.02 ms. Allocated memory is still 314.6 MB. Free memory was 293.4 MB in the beginning and 292.5 MB in the end (delta: 929.7 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 246.95 ms. Allocated memory is still 314.6 MB. Free memory was 292.5 MB in the beginning and 294.4 MB in the end (delta: -1.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 828.03 ms. Allocated memory is still 314.6 MB. Free memory was 294.0 MB in the beginning and 293.1 MB in the end (delta: 880.7 kB). Peak memory consumption was 1.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 75.0ms, 13 PlacesBefore, 13 PlacesAfterwards, 12 TransitionsBefore, 13 TransitionsAfterwards, 28 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 36 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 17, positive: 12, positive conditional: 12, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 10, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 10, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 10, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 25, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 17, positive: 4, positive conditional: 4, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 10, unknown conditional: 10, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 10, Positive cache size: 8, Positive conditional cache size: 8, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 2, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 29.5ms, 14 PlacesBefore, 12 PlacesAfterwards, 8 TransitionsBefore, 8 TransitionsAfterwards, 10 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 11, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 11, negative conditional: 11, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 11, Positive cache size: 8, Positive conditional cache size: 8, Positive unconditional cache size: 0, Negative cache size: 3, Negative conditional cache size: 3, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 79.1ms, 14 PlacesBefore, 15 PlacesAfterwards, 9 TransitionsBefore, 10 TransitionsAfterwards, 8 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 10, Positive conditional cache size: 10, Positive unconditional cache size: 0, Negative cache size: 3, Negative conditional cache size: 3, Negative unconditional cache size: 0 - CounterExampleResult [Line: 26]: assertion can be violated assertion can be violated We found a FailurePath: [L20] FORK 0 fork 1 Thread1(); [L22] 0 x := 0; VAL [x=0] [L37] 1 x := x + 1; [L23] 0 x := 2 * x; VAL [x=2] [L25] JOIN 1 join 1; VAL [x=2] [L26] 0 assert x != 2; VAL [x=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 727.2ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 163.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 150.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 16 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=2, InterpolantAutomatonStates: 7, 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: 9.5ms SsaConstructionTime, 34.9ms SatisfiabilityAnalysisTime, 80.4ms InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...