/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 17:47:38,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 17:47:38,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 17:47:38,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-25 17:47:38,496 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-RepeatedSemanticLbe.epf [2021-03-25 17:47:38,532 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 17:47:38,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 17:47:38,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 17:47:38,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 17:47:38,536 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 17:47:38,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 17:47:38,537 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 17:47:38,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 17:47:38,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 17:47:38,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 17:47:38,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 17:47:38,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 17:47:38,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 17:47:38,538 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 17:47:38,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 17:47:38,539 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 17:47:38,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 17:47:38,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 17:47:38,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 17:47:38,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 17:47:38,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 17:47:38,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 17:47:38,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 17:47:38,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 17:47:38,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 17:47:38,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 17:47:38,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 17:47:38,540 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 17:47:38,540 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 17:47:38,541 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 17:47:38,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 17:47:38,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 17:47:38,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 17:47:38,892 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 17:47:38,893 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 17:47:38,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl [2021-03-25 17:47:38,894 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl' [2021-03-25 17:47:38,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 17:47:38,934 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 17:47:38,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 17:47:38,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 17:47:38,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 17:47:38,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:47:38" (1/1) ... [2021-03-25 17:47:38,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:47:38" (1/1) ... [2021-03-25 17:47:38,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 17:47:38,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 17:47:38,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 17:47:38,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 17:47:38,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:47:38" (1/1) ... [2021-03-25 17:47:38,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:47:38" (1/1) ... [2021-03-25 17:47:38,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:47:38" (1/1) ... [2021-03-25 17:47:38,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:47:38" (1/1) ... [2021-03-25 17:47:38,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:47:38" (1/1) ... [2021-03-25 17:47:38,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:47:38" (1/1) ... [2021-03-25 17:47:38,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:47:38" (1/1) ... [2021-03-25 17:47:38,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 17:47:38,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 17:47:38,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 17:47:38,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 17:47:38,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:47:38" (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 [2021-03-25 17:47:39,029 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 17:47:39,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 17:47:39,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 17:47:39,029 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread1 given in one single declaration [2021-03-25 17:47:39,029 INFO L130 BoogieDeclarations]: Found specification of procedure Thread1 [2021-03-25 17:47:39,029 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread1 [2021-03-25 17:47:39,030 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 17:47:39,161 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 17:47:39,161 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-25 17:47:39,162 INFO L202 PluginConnector]: Adding new model cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:47:39 BoogieIcfgContainer [2021-03-25 17:47:39,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 17:47:39,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 17:47:39,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 17:47:39,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 17:47:39,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:47:38" (1/2) ... [2021-03-25 17:47:39,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fbfcfc and model type cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:47:39, skipping insertion in model container [2021-03-25 17:47:39,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:47:39" (2/2) ... [2021-03-25 17:47:39,169 INFO L111 eAbstractionObserver]: Analyzing ICFG cutoff_test.bpl [2021-03-25 17:47:39,176 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 17:47:39,179 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 17:47:39,180 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 17:47:39,212 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-03-25 17:47:39,227 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-25 17:47:39,260 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 17:47:39,260 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 17:47:39,261 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 17:47:39,262 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 17:47:39,262 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 17:47:39,263 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 17:47:39,263 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 17:47:39,263 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 17:47:39,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 16 places, 15 transitions, 38 flow [2021-03-25 17:47:39,291 INFO L129 PetriNetUnfolder]: 3/14 cut-off events. [2021-03-25 17:47:39,291 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 17:47:39,294 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. [2021-03-25 17:47:39,294 INFO L82 GeneralOperation]: Start removeDead. Operand has 16 places, 15 transitions, 38 flow [2021-03-25 17:47:39,297 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 13 places, 12 transitions, 30 flow [2021-03-25 17:47:39,298 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:47:39,312 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 13 places, 12 transitions, 30 flow [2021-03-25 17:47:39,316 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 13 places, 12 transitions, 30 flow [2021-03-25 17:47:39,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 13 places, 12 transitions, 30 flow [2021-03-25 17:47:39,330 INFO L129 PetriNetUnfolder]: 3/12 cut-off events. [2021-03-25 17:47:39,330 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 17:47:39,331 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. [2021-03-25 17:47:39,332 INFO L142 LiptonReduction]: Number of co-enabled transitions 28 [2021-03-25 17:47:39,444 INFO L154 LiptonReduction]: Checked pairs total: 32 [2021-03-25 17:47:39,444 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 17:47:39,446 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 149 [2021-03-25 17:47:39,460 INFO L129 PetriNetUnfolder]: 3/10 cut-off events. [2021-03-25 17:47:39,461 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 17:47:39,461 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:47:39,461 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:47:39,461 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:47:39,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:47:39,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1053270385, now seen corresponding path program 1 times [2021-03-25 17:47:39,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:47:39,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827512432] [2021-03-25 17:47:39,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:47:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:47:39,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:47:39,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:47:39,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:47:39,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:47:39,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:47:39,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:47:39,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:47:39,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827512432] [2021-03-25 17:47:39,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:47:39,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 17:47:39,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337263294] [2021-03-25 17:47:39,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:47:39,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:47:39,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:47:39,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:47:39,631 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 17 [2021-03-25 17:47:39,633 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 11 transitions, 28 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) [2021-03-25 17:47:39,633 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:47:39,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 17 [2021-03-25 17:47:39,634 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:47:39,667 INFO L129 PetriNetUnfolder]: 4/17 cut-off events. [2021-03-25 17:47:39,667 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 17:47:39,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 17 events. 4/17 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 1/16 useless extension candidates. Maximal degree in co-relation 21. Up to 6 conditions per place. [2021-03-25 17:47:39,669 INFO L132 encePairwiseOnDemand]: 14/17 looper letters, 3 selfloop transitions, 2 changer transitions 4/13 dead transitions. [2021-03-25 17:47:39,669 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 13 transitions, 44 flow [2021-03-25 17:47:39,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:47:39,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:47:39,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2021-03-25 17:47:39,679 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7843137254901961 [2021-03-25 17:47:39,679 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 40 transitions. [2021-03-25 17:47:39,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 40 transitions. [2021-03-25 17:47:39,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:47:39,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 40 transitions. [2021-03-25 17:47:39,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2021-03-25 17:47:39,686 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) [2021-03-25 17:47:39,687 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) [2021-03-25 17:47:39,688 INFO L185 Difference]: Start difference. First operand has 12 places, 11 transitions, 28 flow. Second operand 3 states and 40 transitions. [2021-03-25 17:47:39,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 13 transitions, 44 flow [2021-03-25 17:47:39,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 13 transitions, 40 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 17:47:39,693 INFO L241 Difference]: Finished difference. Result has 13 places, 8 transitions, 26 flow [2021-03-25 17:47:39,694 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=13, PETRI_TRANSITIONS=8} [2021-03-25 17:47:39,695 INFO L343 CegarLoopForPetriNet]: 12 programPoint places, 1 predicate places. [2021-03-25 17:47:39,695 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:47:39,695 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 13 places, 8 transitions, 26 flow [2021-03-25 17:47:39,696 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 13 places, 8 transitions, 26 flow [2021-03-25 17:47:39,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 12 places, 8 transitions, 26 flow [2021-03-25 17:47:39,701 INFO L129 PetriNetUnfolder]: 1/8 cut-off events. [2021-03-25 17:47:39,701 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 17:47:39,702 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. [2021-03-25 17:47:39,703 INFO L142 LiptonReduction]: Number of co-enabled transitions 10 [2021-03-25 17:47:39,704 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 17:47:39,704 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:47:39,704 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-03-25 17:47:39,706 INFO L480 AbstractCegarLoop]: Abstraction has has 12 places, 8 transitions, 26 flow [2021-03-25 17:47:39,706 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) [2021-03-25 17:47:39,707 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:47:39,707 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:47:39,707 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 17:47:39,707 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:47:39,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:47:39,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1439823025, now seen corresponding path program 2 times [2021-03-25 17:47:39,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:47:39,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515412865] [2021-03-25 17:47:39,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:47:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:47:39,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:47:39,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:47:39,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:47:39,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:47:39,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:47:39,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:47:39,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:47:39,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:47:39,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:47:39,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515412865] [2021-03-25 17:47:39,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:47:39,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:47:39,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443058063] [2021-03-25 17:47:39,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 17:47:39,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:47:39,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 17:47:39,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 17:47:39,754 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 17 [2021-03-25 17:47:39,755 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) [2021-03-25 17:47:39,755 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:47:39,755 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 17 [2021-03-25 17:47:39,755 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:47:39,768 INFO L129 PetriNetUnfolder]: 1/11 cut-off events. [2021-03-25 17:47:39,769 INFO L130 PetriNetUnfolder]: For 7/8 co-relation queries the response was YES. [2021-03-25 17:47:39,769 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 11 events. 1/11 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 8 event pairs, 0 based on Foata normal form. 2/13 useless extension candidates. Maximal degree in co-relation 6. Up to 4 conditions per place. [2021-03-25 17:47:39,769 INFO L132 encePairwiseOnDemand]: 13/17 looper letters, 2 selfloop transitions, 3 changer transitions 0/9 dead transitions. [2021-03-25 17:47:39,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 9 transitions, 38 flow [2021-03-25 17:47:39,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 17:47:39,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 17:47:39,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2021-03-25 17:47:39,771 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7352941176470589 [2021-03-25 17:47:39,771 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 50 transitions. [2021-03-25 17:47:39,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 50 transitions. [2021-03-25 17:47:39,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:47:39,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 50 transitions. [2021-03-25 17:47:39,772 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) [2021-03-25 17:47:39,772 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) [2021-03-25 17:47:39,772 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) [2021-03-25 17:47:39,773 INFO L185 Difference]: Start difference. First operand has 12 places, 8 transitions, 26 flow. Second operand 4 states and 50 transitions. [2021-03-25 17:47:39,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 9 transitions, 38 flow [2021-03-25 17:47:39,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 9 transitions, 32 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 17:47:39,774 INFO L241 Difference]: Finished difference. Result has 14 places, 9 transitions, 34 flow [2021-03-25 17:47:39,774 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} [2021-03-25 17:47:39,774 INFO L343 CegarLoopForPetriNet]: 12 programPoint places, 2 predicate places. [2021-03-25 17:47:39,774 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:47:39,775 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 14 places, 9 transitions, 34 flow [2021-03-25 17:47:39,775 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 14 places, 9 transitions, 34 flow [2021-03-25 17:47:39,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 14 places, 9 transitions, 34 flow [2021-03-25 17:47:39,778 INFO L129 PetriNetUnfolder]: 1/11 cut-off events. [2021-03-25 17:47:39,778 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 17:47:39,778 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 8 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. [2021-03-25 17:47:39,778 INFO L142 LiptonReduction]: Number of co-enabled transitions 8 [2021-03-25 17:47:39,791 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-25 17:47:39,792 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 17:47:39,792 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18 [2021-03-25 17:47:39,793 INFO L480 AbstractCegarLoop]: Abstraction has has 14 places, 9 transitions, 37 flow [2021-03-25 17:47:39,793 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) [2021-03-25 17:47:39,793 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:47:39,793 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:47:39,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 17:47:39,793 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:47:39,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:47:39,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1433999365, now seen corresponding path program 3 times [2021-03-25 17:47:39,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:47:39,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777019654] [2021-03-25 17:47:39,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:47:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 17:47:39,799 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 17:47:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 17:47:39,802 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 17:47:39,810 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 17:47:39,810 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 17:47:39,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 17:47:39,819 INFO L202 PluginConnector]: Adding new model cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:47:39 BasicIcfg [2021-03-25 17:47:39,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 17:47:39,821 INFO L168 Benchmark]: Toolchain (without parser) took 886.19 ms. Allocated memory is still 255.9 MB. Free memory was 236.7 MB in the beginning and 199.7 MB in the end (delta: 37.0 MB). Peak memory consumption was 38.9 MB. Max. memory is 16.0 GB. [2021-03-25 17:47:39,821 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 17:47:39,822 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.87 ms. Allocated memory is still 255.9 MB. Free memory was 236.6 MB in the beginning and 235.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 17:47:39,822 INFO L168 Benchmark]: Boogie Preprocessor took 14.05 ms. Allocated memory is still 255.9 MB. Free memory was 235.2 MB in the beginning and 234.3 MB in the end (delta: 915.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 17:47:39,823 INFO L168 Benchmark]: RCFGBuilder took 189.95 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 240.2 MB in the end (delta: -6.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.0 GB. [2021-03-25 17:47:39,823 INFO L168 Benchmark]: TraceAbstraction took 655.38 ms. Allocated memory is still 255.9 MB. Free memory was 239.5 MB in the beginning and 199.7 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.0 GB. [2021-03-25 17:47:39,825 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 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 21.87 ms. Allocated memory is still 255.9 MB. Free memory was 236.6 MB in the beginning and 235.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.05 ms. Allocated memory is still 255.9 MB. Free memory was 235.2 MB in the beginning and 234.3 MB in the end (delta: 915.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 189.95 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 240.2 MB in the end (delta: -6.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 655.38 ms. Allocated memory is still 255.9 MB. Free memory was 239.5 MB in the beginning and 199.7 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 128.1ms, 13 PlacesBefore, 12 PlacesAfterwards, 12 TransitionsBefore, 11 TransitionsAfterwards, 28 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 32 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 17, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 12, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 12, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 12, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 36, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 17, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 12, unknown conditional: 0, unknown unconditional: 12] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.1ms, 13 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: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.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.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: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.6ms, 14 PlacesBefore, 14 PlacesAfterwards, 9 TransitionsBefore, 9 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: 0, positive unconditional: 2, 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: 1, positive: 1, positive conditional: 0, positive unconditional: 1, 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: 1, positive: 1, positive conditional: 0, positive unconditional: 1, 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: 1, positive: 1, positive conditional: 0, positive unconditional: 1, 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: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - 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: 2.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 557.4ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 98.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 194.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 13 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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: 4.8ms SsaConstructionTime, 34.4ms SatisfiabilityAnalysisTime, 76.4ms 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...