/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/simple-equiv.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-12 00:33:06,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-12 00:33:06,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-12 00:33:06,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-12 00:33:06,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-12 00:33:06,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-12 00:33:06,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-12 00:33:06,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-12 00:33:06,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-12 00:33:06,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-12 00:33:06,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-12 00:33:06,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-12 00:33:06,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-12 00:33:06,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-12 00:33:06,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-12 00:33:06,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-12 00:33:06,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-12 00:33:06,090 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-SemanticLbe.epf [2021-03-12 00:33:06,122 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-12 00:33:06,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-12 00:33:06,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-12 00:33:06,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-12 00:33:06,126 INFO L138 SettingsManager]: * Use SBE=true [2021-03-12 00:33:06,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-12 00:33:06,126 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-12 00:33:06,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-12 00:33:06,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-12 00:33:06,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-12 00:33:06,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-12 00:33:06,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-12 00:33:06,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-12 00:33:06,128 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-12 00:33:06,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-12 00:33:06,128 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-12 00:33:06,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-12 00:33:06,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-12 00:33:06,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-12 00:33:06,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-12 00:33:06,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-12 00:33:06,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-12 00:33:06,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-12 00:33:06,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-12 00:33:06,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-12 00:33:06,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-12 00:33:06,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-12 00:33:06,130 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-12 00:33:06,130 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-12 00:33:06,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-12 00:33:06,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-12 00:33:06,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-12 00:33:06,449 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-12 00:33:06,450 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-12 00:33:06,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/simple-equiv.wvr.bpl [2021-03-12 00:33:06,451 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/simple-equiv.wvr.bpl' [2021-03-12 00:33:06,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-12 00:33:06,490 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-12 00:33:06,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-12 00:33:06,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-12 00:33:06,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-12 00:33:06,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:33:06" (1/1) ... [2021-03-12 00:33:06,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:33:06" (1/1) ... [2021-03-12 00:33:06,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-12 00:33:06,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-12 00:33:06,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-12 00:33:06,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-12 00:33:06,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:33:06" (1/1) ... [2021-03-12 00:33:06,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:33:06" (1/1) ... [2021-03-12 00:33:06,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:33:06" (1/1) ... [2021-03-12 00:33:06,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:33:06" (1/1) ... [2021-03-12 00:33:06,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:33:06" (1/1) ... [2021-03-12 00:33:06,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:33:06" (1/1) ... [2021-03-12 00:33:06,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:33:06" (1/1) ... [2021-03-12 00:33:06,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-12 00:33:06,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-12 00:33:06,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-12 00:33:06,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-12 00:33:06,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:33:06" (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 [2021-03-12 00:33:06,590 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-12 00:33:06,591 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-12 00:33:06,591 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-12 00:33:06,592 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-12 00:33:06,592 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-12 00:33:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-12 00:33:06,593 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-12 00:33:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-12 00:33:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-12 00:33:06,593 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-12 00:33:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-12 00:33:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-12 00:33:06,594 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-12 00:33:06,711 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-12 00:33:06,712 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-12 00:33:06,713 INFO L202 PluginConnector]: Adding new model simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 12:33:06 BoogieIcfgContainer [2021-03-12 00:33:06,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-12 00:33:06,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-12 00:33:06,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-12 00:33:06,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-12 00:33:06,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:33:06" (1/2) ... [2021-03-12 00:33:06,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b1847e and model type simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.03 12:33:06, skipping insertion in model container [2021-03-12 00:33:06,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 12:33:06" (2/2) ... [2021-03-12 00:33:06,718 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-equiv.wvr.bpl [2021-03-12 00:33:06,723 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-12 00:33:06,725 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-12 00:33:06,726 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-12 00:33:06,756 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-12 00:33:06,771 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-12 00:33:06,788 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-12 00:33:06,788 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-12 00:33:06,788 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-12 00:33:06,789 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-12 00:33:06,789 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-12 00:33:06,789 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-12 00:33:06,789 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-12 00:33:06,789 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-12 00:33:06,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 23 transitions, 70 flow [2021-03-12 00:33:06,814 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-12 00:33:06,814 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-12 00:33:06,815 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 20 events. 0/20 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-12 00:33:06,815 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 23 transitions, 70 flow [2021-03-12 00:33:06,818 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 18 transitions, 54 flow [2021-03-12 00:33:06,822 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-12 00:33:06,840 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 18 transitions, 54 flow [2021-03-12 00:33:06,843 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 18 transitions, 54 flow [2021-03-12 00:33:06,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 18 transitions, 54 flow [2021-03-12 00:33:06,850 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-12 00:33:06,850 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-12 00:33:06,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 18 events. 0/18 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-12 00:33:06,851 INFO L116 LiptonReduction]: Number of co-enabled transitions 84 [2021-03-12 00:33:06,997 INFO L131 LiptonReduction]: Checked pairs total: 95 [2021-03-12 00:33:06,997 INFO L133 LiptonReduction]: Total number of compositions: 7 [2021-03-12 00:33:06,998 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 179 [2021-03-12 00:33:07,007 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-12 00:33:07,007 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-12 00:33:07,008 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:33:07,008 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:33:07,008 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:33:07,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:33:07,012 INFO L82 PathProgramCache]: Analyzing trace with hash 691621274, now seen corresponding path program 1 times [2021-03-12 00:33:07,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:33:07,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893550153] [2021-03-12 00:33:07,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:33:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:33:07,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:07,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:33:07,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:07,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:33:07,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:07,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:33:07,237 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-12 00:33:07,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:33:07,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:33:07,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893550153] [2021-03-12 00:33:07,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:33:07,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-12 00:33:07,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004586023] [2021-03-12 00:33:07,251 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-12 00:33:07,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:33:07,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-12 00:33:07,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-12 00:33:07,270 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 30 [2021-03-12 00:33:07,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 11 transitions, 40 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2021-03-12 00:33:07,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:33:07,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 30 [2021-03-12 00:33:07,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:33:07,328 INFO L129 PetriNetUnfolder]: 4/22 cut-off events. [2021-03-12 00:33:07,328 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-12 00:33:07,336 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 22 events. 4/22 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 33 event pairs, 0 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 30. Up to 9 conditions per place. [2021-03-12 00:33:07,337 INFO L132 encePairwiseOnDemand]: 25/30 looper letters, 3 selfloop transitions, 5 changer transitions 3/17 dead transitions. [2021-03-12 00:33:07,337 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 17 transitions, 74 flow [2021-03-12 00:33:07,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 00:33:07,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-12 00:33:07,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2021-03-12 00:33:07,349 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5466666666666666 [2021-03-12 00:33:07,349 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 82 transitions. [2021-03-12 00:33:07,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 82 transitions. [2021-03-12 00:33:07,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:33:07,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 82 transitions. [2021-03-12 00:33:07,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:07,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 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) [2021-03-12 00:33:07,359 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 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) [2021-03-12 00:33:07,361 INFO L185 Difference]: Start difference. First operand has 21 places, 11 transitions, 40 flow. Second operand 5 states and 82 transitions. [2021-03-12 00:33:07,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 17 transitions, 74 flow [2021-03-12 00:33:07,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 17 transitions, 62 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-03-12 00:33:07,367 INFO L241 Difference]: Finished difference. Result has 21 places, 14 transitions, 61 flow [2021-03-12 00:33:07,369 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=61, PETRI_PLACES=21, PETRI_TRANSITIONS=14} [2021-03-12 00:33:07,369 INFO L335 CegarLoopForPetriNet]: 21 programPoint places, 0 predicate places. [2021-03-12 00:33:07,369 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 14 transitions, 61 flow [2021-03-12 00:33:07,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2021-03-12 00:33:07,370 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:33:07,370 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:33:07,370 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-12 00:33:07,370 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:33:07,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:33:07,372 INFO L82 PathProgramCache]: Analyzing trace with hash 949246154, now seen corresponding path program 2 times [2021-03-12 00:33:07,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:33:07,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134838889] [2021-03-12 00:33:07,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:33:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:33:07,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:07,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:33:07,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:07,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:33:07,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:07,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:33:07,469 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-12 00:33:07,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:33:07,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:33:07,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134838889] [2021-03-12 00:33:07,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:33:07,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-12 00:33:07,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133784557] [2021-03-12 00:33:07,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-12 00:33:07,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:33:07,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-12 00:33:07,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-12 00:33:07,482 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 30 [2021-03-12 00:33:07,483 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 14 transitions, 61 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2021-03-12 00:33:07,483 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:33:07,483 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 30 [2021-03-12 00:33:07,483 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:33:07,518 INFO L129 PetriNetUnfolder]: 2/23 cut-off events. [2021-03-12 00:33:07,518 INFO L130 PetriNetUnfolder]: For 15/21 co-relation queries the response was YES. [2021-03-12 00:33:07,519 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 23 events. 2/23 cut-off events. For 15/21 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 33 event pairs, 1 based on Foata normal form. 3/25 useless extension candidates. Maximal degree in co-relation 44. Up to 11 conditions per place. [2021-03-12 00:33:07,519 INFO L132 encePairwiseOnDemand]: 25/30 looper letters, 3 selfloop transitions, 2 changer transitions 5/16 dead transitions. [2021-03-12 00:33:07,519 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 16 transitions, 93 flow [2021-03-12 00:33:07,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 00:33:07,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-12 00:33:07,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2021-03-12 00:33:07,523 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.54 [2021-03-12 00:33:07,526 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 81 transitions. [2021-03-12 00:33:07,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 81 transitions. [2021-03-12 00:33:07,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:33:07,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 81 transitions. [2021-03-12 00:33:07,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-03-12 00:33:07,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 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) [2021-03-12 00:33:07,535 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 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) [2021-03-12 00:33:07,535 INFO L185 Difference]: Start difference. First operand has 21 places, 14 transitions, 61 flow. Second operand 5 states and 81 transitions. [2021-03-12 00:33:07,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 16 transitions, 93 flow [2021-03-12 00:33:07,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 85 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-12 00:33:07,538 INFO L241 Difference]: Finished difference. Result has 24 places, 11 transitions, 50 flow [2021-03-12 00:33:07,539 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=50, PETRI_PLACES=24, PETRI_TRANSITIONS=11} [2021-03-12 00:33:07,539 INFO L335 CegarLoopForPetriNet]: 21 programPoint places, 3 predicate places. [2021-03-12 00:33:07,539 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 11 transitions, 50 flow [2021-03-12 00:33:07,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2021-03-12 00:33:07,539 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:33:07,540 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:33:07,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-12 00:33:07,540 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:33:07,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:33:07,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1829807698, now seen corresponding path program 3 times [2021-03-12 00:33:07,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:33:07,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077782801] [2021-03-12 00:33:07,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:33:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:33:07,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:07,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:33:07,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:07,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:33:07,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:07,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:33:07,621 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-12 00:33:07,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:33:07,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:33:07,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077782801] [2021-03-12 00:33:07,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:33:07,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-12 00:33:07,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302175488] [2021-03-12 00:33:07,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-12 00:33:07,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:33:07,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-12 00:33:07,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-12 00:33:07,629 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 30 [2021-03-12 00:33:07,629 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 11 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2021-03-12 00:33:07,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:33:07,630 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 30 [2021-03-12 00:33:07,630 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:33:07,649 INFO L129 PetriNetUnfolder]: 1/13 cut-off events. [2021-03-12 00:33:07,649 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-03-12 00:33:07,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 13 events. 1/13 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 1/14 useless extension candidates. Maximal degree in co-relation 24. Up to 6 conditions per place. [2021-03-12 00:33:07,650 INFO L132 encePairwiseOnDemand]: 25/30 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2021-03-12 00:33:07,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 12 transitions, 74 flow [2021-03-12 00:33:07,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 00:33:07,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-12 00:33:07,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2021-03-12 00:33:07,652 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5133333333333333 [2021-03-12 00:33:07,652 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 77 transitions. [2021-03-12 00:33:07,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 77 transitions. [2021-03-12 00:33:07,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:33:07,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 77 transitions. [2021-03-12 00:33:07,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:07,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 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) [2021-03-12 00:33:07,655 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 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) [2021-03-12 00:33:07,655 INFO L185 Difference]: Start difference. First operand has 24 places, 11 transitions, 50 flow. Second operand 5 states and 77 transitions. [2021-03-12 00:33:07,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 12 transitions, 74 flow [2021-03-12 00:33:07,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 12 transitions, 48 flow, removed 8 selfloop flow, removed 7 redundant places. [2021-03-12 00:33:07,656 INFO L241 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2021-03-12 00:33:07,656 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2021-03-12 00:33:07,657 INFO L335 CegarLoopForPetriNet]: 21 programPoint places, -4 predicate places. [2021-03-12 00:33:07,657 INFO L480 AbstractCegarLoop]: Abstraction has has 17 places, 0 transitions, 0 flow [2021-03-12 00:33:07,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2021-03-12 00:33:07,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-12 00:33:07,660 INFO L202 PluginConnector]: Adding new model simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.03 12:33:07 BasicIcfg [2021-03-12 00:33:07,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-12 00:33:07,662 INFO L168 Benchmark]: Toolchain (without parser) took 1174.04 ms. Allocated memory is still 360.7 MB. Free memory was 341.1 MB in the beginning and 280.3 MB in the end (delta: 60.8 MB). Peak memory consumption was 63.3 MB. Max. memory is 16.0 GB. [2021-03-12 00:33:07,662 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 360.7 MB. Free memory was 342.2 MB in the beginning and 342.1 MB in the end (delta: 75.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-12 00:33:07,663 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.63 ms. Allocated memory is still 360.7 MB. Free memory was 340.6 MB in the beginning and 339.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-12 00:33:07,664 INFO L168 Benchmark]: Boogie Preprocessor took 13.09 ms. Allocated memory is still 360.7 MB. Free memory was 339.1 MB in the beginning and 338.3 MB in the end (delta: 867.0 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-12 00:33:07,668 INFO L168 Benchmark]: RCFGBuilder took 184.86 ms. Allocated memory is still 360.7 MB. Free memory was 338.2 MB in the beginning and 328.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-12 00:33:07,668 INFO L168 Benchmark]: TraceAbstraction took 946.38 ms. Allocated memory is still 360.7 MB. Free memory was 328.2 MB in the beginning and 280.3 MB in the end (delta: 48.0 MB). Peak memory consumption was 50.7 MB. Max. memory is 16.0 GB. [2021-03-12 00:33:07,671 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 360.7 MB. Free memory was 342.2 MB in the beginning and 342.1 MB in the end (delta: 75.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.63 ms. Allocated memory is still 360.7 MB. Free memory was 340.6 MB in the beginning and 339.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.09 ms. Allocated memory is still 360.7 MB. Free memory was 339.1 MB in the beginning and 338.3 MB in the end (delta: 867.0 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * RCFGBuilder took 184.86 ms. Allocated memory is still 360.7 MB. Free memory was 338.2 MB in the beginning and 328.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 946.38 ms. Allocated memory is still 360.7 MB. Free memory was 328.2 MB in the beginning and 280.3 MB in the end (delta: 48.0 MB). Peak memory consumption was 50.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 154.9ms, 28 PlacesBefore, 21 PlacesAfterwards, 18 TransitionsBefore, 11 TransitionsAfterwards, 84 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 95 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 95, positive: 95, positive conditional: 0, positive unconditional: 95, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 59, positive: 59, positive conditional: 0, positive unconditional: 59, 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: 59, positive: 56, positive conditional: 0, positive unconditional: 56, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 21, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 95, positive: 36, positive conditional: 0, positive unconditional: 36, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 59, unknown conditional: 0, unknown unconditional: 59] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 45]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 872.8ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 194.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 214.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 71 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 49.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 95.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=1, InterpolantAutomatonStates: 15, 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: 9.1ms SsaConstructionTime, 30.9ms SatisfiabilityAnalysisTime, 318.1ms InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 186 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 correct! Received shutdown request...