/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/weaver-benchmarks/generated/parallel/misc-2-unrolled.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 19:37:43,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 19:37:43,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 19:37:43,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 19:37:43,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 19:37:43,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 19:37:43,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 19:37:43,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 19:37:43,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 19:37:43,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 19:37:43,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 19:37:43,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 19:37:43,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 19:37:43,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 19:37:43,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 19:37:43,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 19:37:43,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 19:37:43,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 19:37:43,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 19:37:43,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 19:37:43,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 19:37:43,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 19:37:43,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 19:37:43,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 19:37:43,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 19:37:43,570 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 19:37:43,604 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 19:37:43,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 19:37:43,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 19:37:43,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 19:37:43,607 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 19:37:43,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 19:37:43,608 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 19:37:43,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 19:37:43,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 19:37:43,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 19:37:43,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 19:37:43,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 19:37:43,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 19:37:43,610 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 19:37:43,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 19:37:43,610 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 19:37:43,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 19:37:43,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 19:37:43,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 19:37:43,611 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 19:37:43,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 19:37:43,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 19:37:43,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 19:37:43,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 19:37:43,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 19:37:43,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 19:37:43,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 19:37:43,612 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 19:37:43,612 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 19:37:43,612 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 19:37:43,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 19:37:43,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 19:37:43,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 19:37:43,926 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 19:37:43,928 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 19:37:43,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled.wvr.bpl [2021-03-25 19:37:43,929 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled.wvr.bpl' [2021-03-25 19:37:43,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 19:37:43,970 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 19:37:43,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 19:37:43,971 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 19:37:43,971 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 19:37:43,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:37:43" (1/1) ... [2021-03-25 19:37:43,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:37:43" (1/1) ... [2021-03-25 19:37:43,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 19:37:43,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 19:37:43,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 19:37:43,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 19:37:44,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:37:43" (1/1) ... [2021-03-25 19:37:44,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:37:43" (1/1) ... [2021-03-25 19:37:44,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:37:43" (1/1) ... [2021-03-25 19:37:44,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:37:43" (1/1) ... [2021-03-25 19:37:44,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:37:43" (1/1) ... [2021-03-25 19:37:44,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:37:43" (1/1) ... [2021-03-25 19:37:44,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:37:43" (1/1) ... [2021-03-25 19:37:44,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 19:37:44,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 19:37:44,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 19:37:44,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 19:37:44,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:37:43" (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 19:37:44,074 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 19:37:44,074 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 19:37:44,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 19:37:44,076 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 19:37:44,077 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 19:37:44,077 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 19:37:44,077 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 19:37:44,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 19:37:44,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 19:37:44,078 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 19:37:44,262 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 19:37:44,262 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 19:37:44,263 INFO L202 PluginConnector]: Adding new model misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:37:44 BoogieIcfgContainer [2021-03-25 19:37:44,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 19:37:44,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 19:37:44,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 19:37:44,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 19:37:44,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:37:43" (1/2) ... [2021-03-25 19:37:44,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad2cbb8 and model type misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 07:37:44, skipping insertion in model container [2021-03-25 19:37:44,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:37:44" (2/2) ... [2021-03-25 19:37:44,269 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-2-unrolled.wvr.bpl [2021-03-25 19:37:44,278 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 19:37:44,287 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 19:37:44,288 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 19:37:44,341 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-25 19:37:44,385 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 19:37:44,403 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 19:37:44,404 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 19:37:44,404 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 19:37:44,404 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 19:37:44,404 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 19:37:44,404 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 19:37:44,404 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 19:37:44,404 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 19:37:44,427 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 25 transitions, 66 flow [2021-03-25 19:37:44,443 INFO L129 PetriNetUnfolder]: 2/23 cut-off events. [2021-03-25 19:37:44,444 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 19:37:44,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 23 events. 2/23 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2021-03-25 19:37:44,446 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 25 transitions, 66 flow [2021-03-25 19:37:44,457 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 54 flow [2021-03-25 19:37:44,458 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:37:44,468 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 26 places, 21 transitions, 54 flow [2021-03-25 19:37:44,471 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 26 places, 21 transitions, 54 flow [2021-03-25 19:37:44,477 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 21 transitions, 54 flow [2021-03-25 19:37:44,496 INFO L129 PetriNetUnfolder]: 2/21 cut-off events. [2021-03-25 19:37:44,496 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 19:37:44,498 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 2/21 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2021-03-25 19:37:44,501 INFO L142 LiptonReduction]: Number of co-enabled transitions 126 [2021-03-25 19:37:44,718 INFO L154 LiptonReduction]: Checked pairs total: 44 [2021-03-25 19:37:44,718 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-25 19:37:44,720 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 263 [2021-03-25 19:37:44,734 INFO L129 PetriNetUnfolder]: 2/13 cut-off events. [2021-03-25 19:37:44,734 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 19:37:44,735 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:37:44,735 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:37:44,735 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:37:44,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:37:44,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1498116862, now seen corresponding path program 1 times [2021-03-25 19:37:44,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:37:44,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892122985] [2021-03-25 19:37:44,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:37:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:37:44,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:44,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:37:44,842 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 19:37:44,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892122985] [2021-03-25 19:37:44,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:37:44,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 19:37:44,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241509344] [2021-03-25 19:37:44,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 19:37:44,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:37:44,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 19:37:44,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 19:37:44,861 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 32 [2021-03-25 19:37:44,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 14 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:37:44,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:37:44,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 32 [2021-03-25 19:37:44,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:37:44,883 INFO L129 PetriNetUnfolder]: 9/33 cut-off events. [2021-03-25 19:37:44,883 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-25 19:37:44,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 33 events. 9/33 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 70 event pairs, 0 based on Foata normal form. 1/29 useless extension candidates. Maximal degree in co-relation 42. Up to 16 conditions per place. [2021-03-25 19:37:44,885 INFO L132 encePairwiseOnDemand]: 28/32 looper letters, 5 selfloop transitions, 3 changer transitions 0/16 dead transitions. [2021-03-25 19:37:44,885 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 16 transitions, 60 flow [2021-03-25 19:37:44,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 19:37:44,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 19:37:44,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2021-03-25 19:37:44,893 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.71875 [2021-03-25 19:37:44,893 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 69 transitions. [2021-03-25 19:37:44,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 69 transitions. [2021-03-25 19:37:44,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:37:44,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 69 transitions. [2021-03-25 19:37:44,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 19:37:44,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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 19:37:44,901 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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 19:37:44,902 INFO L185 Difference]: Start difference. First operand has 19 places, 14 transitions, 40 flow. Second operand 3 states and 69 transitions. [2021-03-25 19:37:44,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 16 transitions, 60 flow [2021-03-25 19:37:44,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 16 transitions, 52 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 19:37:44,906 INFO L241 Difference]: Finished difference. Result has 18 places, 16 transitions, 51 flow [2021-03-25 19:37:44,907 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=51, PETRI_PLACES=18, PETRI_TRANSITIONS=16} [2021-03-25 19:37:44,908 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, -1 predicate places. [2021-03-25 19:37:44,908 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:37:44,908 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 18 places, 16 transitions, 51 flow [2021-03-25 19:37:44,908 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 18 places, 16 transitions, 51 flow [2021-03-25 19:37:44,909 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 18 places, 16 transitions, 51 flow [2021-03-25 19:37:44,914 INFO L129 PetriNetUnfolder]: 6/27 cut-off events. [2021-03-25 19:37:44,914 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 19:37:44,914 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 27 events. 6/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 60 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 27. Up to 9 conditions per place. [2021-03-25 19:37:44,915 INFO L142 LiptonReduction]: Number of co-enabled transitions 58 [2021-03-25 19:37:44,956 INFO L154 LiptonReduction]: Checked pairs total: 5 [2021-03-25 19:37:44,956 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 19:37:44,956 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 48 [2021-03-25 19:37:44,957 INFO L480 AbstractCegarLoop]: Abstraction has has 18 places, 16 transitions, 51 flow [2021-03-25 19:37:44,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:37:44,958 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:37:44,958 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:37:44,958 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 19:37:44,958 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:37:44,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:37:44,959 INFO L82 PathProgramCache]: Analyzing trace with hash 372496654, now seen corresponding path program 1 times [2021-03-25 19:37:44,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:37:44,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26754461] [2021-03-25 19:37:44,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:37:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:37:44,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:37:45,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 19:37:45,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:37:45,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:37:45,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26754461] [2021-03-25 19:37:45,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:37:45,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 19:37:45,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308677880] [2021-03-25 19:37:45,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 19:37:45,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:37:45,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 19:37:45,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 19:37:45,022 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 33 [2021-03-25 19:37:45,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 16 transitions, 51 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 19:37:45,023 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:37:45,023 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 33 [2021-03-25 19:37:45,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:37:45,084 INFO L129 PetriNetUnfolder]: 31/77 cut-off events. [2021-03-25 19:37:45,084 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-25 19:37:45,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 77 events. 31/77 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 260 event pairs, 3 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 140. Up to 25 conditions per place. [2021-03-25 19:37:45,085 INFO L132 encePairwiseOnDemand]: 26/33 looper letters, 14 selfloop transitions, 9 changer transitions 0/31 dead transitions. [2021-03-25 19:37:45,086 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 31 transitions, 133 flow [2021-03-25 19:37:45,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 19:37:45,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 19:37:45,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2021-03-25 19:37:45,088 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6303030303030303 [2021-03-25 19:37:45,088 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 104 transitions. [2021-03-25 19:37:45,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 104 transitions. [2021-03-25 19:37:45,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:37:45,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 104 transitions. [2021-03-25 19:37:45,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:37:45,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 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 19:37:45,091 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 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 19:37:45,091 INFO L185 Difference]: Start difference. First operand has 18 places, 16 transitions, 51 flow. Second operand 5 states and 104 transitions. [2021-03-25 19:37:45,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 31 transitions, 133 flow [2021-03-25 19:37:45,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 31 transitions, 130 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 19:37:45,093 INFO L241 Difference]: Finished difference. Result has 24 places, 23 transitions, 110 flow [2021-03-25 19:37:45,093 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=110, PETRI_PLACES=24, PETRI_TRANSITIONS=23} [2021-03-25 19:37:45,094 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2021-03-25 19:37:45,094 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:37:45,094 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 23 transitions, 110 flow [2021-03-25 19:37:45,094 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 23 transitions, 110 flow [2021-03-25 19:37:45,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 23 transitions, 110 flow [2021-03-25 19:37:45,106 INFO L129 PetriNetUnfolder]: 16/56 cut-off events. [2021-03-25 19:37:45,106 INFO L130 PetriNetUnfolder]: For 31/35 co-relation queries the response was YES. [2021-03-25 19:37:45,107 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 56 events. 16/56 cut-off events. For 31/35 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 173 event pairs, 0 based on Foata normal form. 2/54 useless extension candidates. Maximal degree in co-relation 110. Up to 20 conditions per place. [2021-03-25 19:37:45,108 INFO L142 LiptonReduction]: Number of co-enabled transitions 66 [2021-03-25 19:37:45,157 INFO L154 LiptonReduction]: Checked pairs total: 8 [2021-03-25 19:37:45,158 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 19:37:45,158 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 64 [2021-03-25 19:37:45,159 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 23 transitions, 110 flow [2021-03-25 19:37:45,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 19:37:45,159 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:37:45,159 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:37:45,159 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 19:37:45,160 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:37:45,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:37:45,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1649652338, now seen corresponding path program 2 times [2021-03-25 19:37:45,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:37:45,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243729488] [2021-03-25 19:37:45,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:37:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:37:45,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:37:45,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:37:45,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:37:45,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:37:45,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243729488] [2021-03-25 19:37:45,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659350615] [2021-03-25 19:37:45,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-03-25 19:37:45,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-25 19:37:45,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 19:37:45,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-25 19:37:45,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 19:37:45,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:37:45,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:37:45,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:37:45,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-25 19:37:45,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:37:45,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:37:45,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:37:45,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:37:45,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:37:45,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:37:45,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:37:45,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:37:45,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:37:45,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:37:45,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 19:37:45,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 19:37:45,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:37:45,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:37:45,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:37:45,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:37:45,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:37:45,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:37:45,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:37:45,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:37:45,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:37:45,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:37:45,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:37:45,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:37:45,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:37:45,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:37:45,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:37:45,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:37:45,353 INFO L142 QuantifierPusher]: treesize reduction 13, result has 7.1 percent of original size [2021-03-25 19:37:45,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:37:45,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:37:45,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:37:45,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:37:45,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:37:45,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:37:45,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:37:45,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:37:45,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:37:45,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:37:45,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:37:45,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 19:37:45,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-03-25 19:37:45,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146192288] [2021-03-25 19:37:45,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 19:37:45,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:37:45,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 19:37:45,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 19:37:45,376 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2021-03-25 19:37:45,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 23 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 19:37:45,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:37:45,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2021-03-25 19:37:45,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:37:45,433 INFO L129 PetriNetUnfolder]: 28/68 cut-off events. [2021-03-25 19:37:45,433 INFO L130 PetriNetUnfolder]: For 69/72 co-relation queries the response was YES. [2021-03-25 19:37:45,434 INFO L84 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 68 events. 28/68 cut-off events. For 69/72 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 201 event pairs, 3 based on Foata normal form. 5/73 useless extension candidates. Maximal degree in co-relation 192. Up to 23 conditions per place. [2021-03-25 19:37:45,434 INFO L132 encePairwiseOnDemand]: 27/35 looper letters, 14 selfloop transitions, 10 changer transitions 6/37 dead transitions. [2021-03-25 19:37:45,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 37 transitions, 233 flow [2021-03-25 19:37:45,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 19:37:45,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 19:37:45,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2021-03-25 19:37:45,436 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6057142857142858 [2021-03-25 19:37:45,436 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 106 transitions. [2021-03-25 19:37:45,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 106 transitions. [2021-03-25 19:37:45,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:37:45,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 106 transitions. [2021-03-25 19:37:45,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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 19:37:45,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 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 19:37:45,439 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 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 19:37:45,439 INFO L185 Difference]: Start difference. First operand has 24 places, 23 transitions, 110 flow. Second operand 5 states and 106 transitions. [2021-03-25 19:37:45,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 37 transitions, 233 flow [2021-03-25 19:37:45,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 37 transitions, 233 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 19:37:45,442 INFO L241 Difference]: Finished difference. Result has 31 places, 24 transitions, 152 flow [2021-03-25 19:37:45,442 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2021-03-25 19:37:45,442 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 12 predicate places. [2021-03-25 19:37:45,443 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:37:45,443 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 24 transitions, 152 flow [2021-03-25 19:37:45,443 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 24 transitions, 152 flow [2021-03-25 19:37:45,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 24 transitions, 152 flow [2021-03-25 19:37:45,449 INFO L129 PetriNetUnfolder]: 12/44 cut-off events. [2021-03-25 19:37:45,449 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2021-03-25 19:37:45,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 44 events. 12/44 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 125 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 125. Up to 16 conditions per place. [2021-03-25 19:37:45,450 INFO L142 LiptonReduction]: Number of co-enabled transitions 64 [2021-03-25 19:37:45,484 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 19:37:45,485 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 19:37:45,485 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 43 [2021-03-25 19:37:45,485 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 155 flow [2021-03-25 19:37:45,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 19:37:45,486 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:37:45,486 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:37:45,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-03-25 19:37:45,713 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:37:45,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:37:45,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1238082067, now seen corresponding path program 1 times [2021-03-25 19:37:45,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:37:45,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874372663] [2021-03-25 19:37:45,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:37:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:37:45,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:37:45,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 19:37:45,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:37:45,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:37:45,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874372663] [2021-03-25 19:37:45,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:37:45,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 19:37:45,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810114940] [2021-03-25 19:37:45,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 19:37:45,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:37:45,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 19:37:45,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 19:37:45,753 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 36 [2021-03-25 19:37:45,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 19:37:45,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:37:45,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 36 [2021-03-25 19:37:45,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:37:45,843 INFO L129 PetriNetUnfolder]: 35/90 cut-off events. [2021-03-25 19:37:45,843 INFO L130 PetriNetUnfolder]: For 210/213 co-relation queries the response was YES. [2021-03-25 19:37:45,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 90 events. 35/90 cut-off events. For 210/213 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 292 event pairs, 0 based on Foata normal form. 4/94 useless extension candidates. Maximal degree in co-relation 321. Up to 36 conditions per place. [2021-03-25 19:37:45,846 INFO L132 encePairwiseOnDemand]: 29/36 looper letters, 27 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2021-03-25 19:37:45,846 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 376 flow [2021-03-25 19:37:45,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 19:37:45,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 19:37:45,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2021-03-25 19:37:45,852 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6055555555555555 [2021-03-25 19:37:45,852 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 109 transitions. [2021-03-25 19:37:45,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 109 transitions. [2021-03-25 19:37:45,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:37:45,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 109 transitions. [2021-03-25 19:37:45,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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 19:37:45,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 states have internal predecessors, (216), 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 19:37:45,859 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 states have internal predecessors, (216), 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 19:37:45,859 INFO L185 Difference]: Start difference. First operand has 31 places, 24 transitions, 155 flow. Second operand 5 states and 109 transitions. [2021-03-25 19:37:45,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 376 flow [2021-03-25 19:37:45,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 45 transitions, 374 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-03-25 19:37:45,867 INFO L241 Difference]: Finished difference. Result has 38 places, 33 transitions, 259 flow [2021-03-25 19:37:45,867 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=259, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2021-03-25 19:37:45,868 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 19 predicate places. [2021-03-25 19:37:45,868 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:37:45,868 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 33 transitions, 259 flow [2021-03-25 19:37:45,868 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 33 transitions, 259 flow [2021-03-25 19:37:45,869 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 33 transitions, 259 flow [2021-03-25 19:37:45,882 INFO L129 PetriNetUnfolder]: 32/85 cut-off events. [2021-03-25 19:37:45,882 INFO L130 PetriNetUnfolder]: For 297/308 co-relation queries the response was YES. [2021-03-25 19:37:45,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 85 events. 32/85 cut-off events. For 297/308 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 291 event pairs, 2 based on Foata normal form. 5/88 useless extension candidates. Maximal degree in co-relation 311. Up to 31 conditions per place. [2021-03-25 19:37:45,886 INFO L142 LiptonReduction]: Number of co-enabled transitions 66 [2021-03-25 19:37:45,949 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:37:45,949 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 19:37:45,949 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 81 [2021-03-25 19:37:45,952 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 267 flow [2021-03-25 19:37:45,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 19:37:45,953 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:37:45,953 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:37:45,953 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 19:37:45,953 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:37:45,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:37:45,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1012869199, now seen corresponding path program 2 times [2021-03-25 19:37:45,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:37:45,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790373035] [2021-03-25 19:37:45,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:37:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:37:45,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:37:45,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:37:45,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:45,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:37:45,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:37:45,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790373035] [2021-03-25 19:37:45,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:37:45,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 19:37:46,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959684415] [2021-03-25 19:37:46,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 19:37:46,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:37:46,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 19:37:46,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 19:37:46,002 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2021-03-25 19:37:46,002 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 19:37:46,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:37:46,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2021-03-25 19:37:46,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:37:46,075 INFO L129 PetriNetUnfolder]: 32/80 cut-off events. [2021-03-25 19:37:46,076 INFO L130 PetriNetUnfolder]: For 306/307 co-relation queries the response was YES. [2021-03-25 19:37:46,076 INFO L84 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 80 events. 32/80 cut-off events. For 306/307 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 240 event pairs, 1 based on Foata normal form. 5/85 useless extension candidates. Maximal degree in co-relation 357. Up to 30 conditions per place. [2021-03-25 19:37:46,077 INFO L132 encePairwiseOnDemand]: 29/38 looper letters, 22 selfloop transitions, 9 changer transitions 7/45 dead transitions. [2021-03-25 19:37:46,077 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 446 flow [2021-03-25 19:37:46,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 19:37:46,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 19:37:46,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2021-03-25 19:37:46,079 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2021-03-25 19:37:46,079 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 110 transitions. [2021-03-25 19:37:46,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 110 transitions. [2021-03-25 19:37:46,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:37:46,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 110 transitions. [2021-03-25 19:37:46,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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 19:37:46,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 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 19:37:46,082 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 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 19:37:46,082 INFO L185 Difference]: Start difference. First operand has 38 places, 33 transitions, 267 flow. Second operand 5 states and 110 transitions. [2021-03-25 19:37:46,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 446 flow [2021-03-25 19:37:46,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 430 flow, removed 8 selfloop flow, removed 0 redundant places. [2021-03-25 19:37:46,087 INFO L241 Difference]: Finished difference. Result has 45 places, 28 transitions, 247 flow [2021-03-25 19:37:46,087 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=247, PETRI_PLACES=45, PETRI_TRANSITIONS=28} [2021-03-25 19:37:46,087 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 26 predicate places. [2021-03-25 19:37:46,087 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:37:46,087 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 28 transitions, 247 flow [2021-03-25 19:37:46,088 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 28 transitions, 247 flow [2021-03-25 19:37:46,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 28 transitions, 247 flow [2021-03-25 19:37:46,100 INFO L129 PetriNetUnfolder]: 25/62 cut-off events. [2021-03-25 19:37:46,100 INFO L130 PetriNetUnfolder]: For 300/310 co-relation queries the response was YES. [2021-03-25 19:37:46,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 62 events. 25/62 cut-off events. For 300/310 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 170 event pairs, 2 based on Foata normal form. 4/64 useless extension candidates. Maximal degree in co-relation 280. Up to 24 conditions per place. [2021-03-25 19:37:46,102 INFO L142 LiptonReduction]: Number of co-enabled transitions 58 [2021-03-25 19:37:46,104 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:37:46,104 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:37:46,104 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17 [2021-03-25 19:37:46,106 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 28 transitions, 247 flow [2021-03-25 19:37:46,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 19:37:46,107 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:37:46,107 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:37:46,107 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 19:37:46,107 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:37:46,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:37:46,107 INFO L82 PathProgramCache]: Analyzing trace with hash -48063774, now seen corresponding path program 1 times [2021-03-25 19:37:46,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:37:46,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218556535] [2021-03-25 19:37:46,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:37:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:37:46,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:46,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:37:46,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:46,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:37:46,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:46,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:37:46,186 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 19:37:46,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:37:46,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-25 19:37:46,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218556535] [2021-03-25 19:37:46,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:37:46,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 19:37:46,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600716046] [2021-03-25 19:37:46,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 19:37:46,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:37:46,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 19:37:46,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 19:37:46,191 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2021-03-25 19:37:46,191 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 28 transitions, 247 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 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 19:37:46,191 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:37:46,191 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2021-03-25 19:37:46,191 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:37:46,228 INFO L129 PetriNetUnfolder]: 19/61 cut-off events. [2021-03-25 19:37:46,228 INFO L130 PetriNetUnfolder]: For 340/345 co-relation queries the response was YES. [2021-03-25 19:37:46,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 61 events. 19/61 cut-off events. For 340/345 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 173 event pairs, 1 based on Foata normal form. 3/64 useless extension candidates. Maximal degree in co-relation 286. Up to 24 conditions per place. [2021-03-25 19:37:46,229 INFO L132 encePairwiseOnDemand]: 33/38 looper letters, 8 selfloop transitions, 2 changer transitions 9/34 dead transitions. [2021-03-25 19:37:46,229 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 34 transitions, 358 flow [2021-03-25 19:37:46,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 19:37:46,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 19:37:46,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2021-03-25 19:37:46,231 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.625 [2021-03-25 19:37:46,231 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 95 transitions. [2021-03-25 19:37:46,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 95 transitions. [2021-03-25 19:37:46,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:37:46,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 95 transitions. [2021-03-25 19:37:46,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 19:37:46,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 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 19:37:46,232 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 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 19:37:46,232 INFO L185 Difference]: Start difference. First operand has 44 places, 28 transitions, 247 flow. Second operand 4 states and 95 transitions. [2021-03-25 19:37:46,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 34 transitions, 358 flow [2021-03-25 19:37:46,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 34 transitions, 335 flow, removed 10 selfloop flow, removed 2 redundant places. [2021-03-25 19:37:46,235 INFO L241 Difference]: Finished difference. Result has 46 places, 25 transitions, 215 flow [2021-03-25 19:37:46,236 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=215, PETRI_PLACES=46, PETRI_TRANSITIONS=25} [2021-03-25 19:37:46,236 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 27 predicate places. [2021-03-25 19:37:46,236 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:37:46,236 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 25 transitions, 215 flow [2021-03-25 19:37:46,236 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 25 transitions, 215 flow [2021-03-25 19:37:46,237 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 25 transitions, 215 flow [2021-03-25 19:37:46,241 INFO L129 PetriNetUnfolder]: 15/43 cut-off events. [2021-03-25 19:37:46,241 INFO L130 PetriNetUnfolder]: For 158/158 co-relation queries the response was YES. [2021-03-25 19:37:46,242 INFO L84 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 43 events. 15/43 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 81 event pairs, 1 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 179. Up to 16 conditions per place. [2021-03-25 19:37:46,242 INFO L142 LiptonReduction]: Number of co-enabled transitions 28 [2021-03-25 19:37:46,244 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:37:46,244 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:37:46,244 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-25 19:37:46,247 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 25 transitions, 215 flow [2021-03-25 19:37:46,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 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 19:37:46,247 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:37:46,248 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:37:46,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 19:37:46,248 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:37:46,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:37:46,249 INFO L82 PathProgramCache]: Analyzing trace with hash 406169857, now seen corresponding path program 1 times [2021-03-25 19:37:46,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:37:46,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892028430] [2021-03-25 19:37:46,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:37:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:37:46,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:46,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:37:46,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:46,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:37:46,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:37:46,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:37:46,315 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-25 19:37:46,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:37:46,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-25 19:37:46,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892028430] [2021-03-25 19:37:46,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:37:46,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 19:37:46,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163837215] [2021-03-25 19:37:46,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 19:37:46,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:37:46,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 19:37:46,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 19:37:46,321 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2021-03-25 19:37:46,321 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 25 transitions, 215 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 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 19:37:46,321 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:37:46,321 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2021-03-25 19:37:46,321 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:37:46,339 INFO L129 PetriNetUnfolder]: 13/40 cut-off events. [2021-03-25 19:37:46,340 INFO L130 PetriNetUnfolder]: For 158/159 co-relation queries the response was YES. [2021-03-25 19:37:46,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 40 events. 13/40 cut-off events. For 158/159 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 77 event pairs, 0 based on Foata normal form. 2/42 useless extension candidates. Maximal degree in co-relation 180. Up to 15 conditions per place. [2021-03-25 19:37:46,340 INFO L132 encePairwiseOnDemand]: 34/38 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2021-03-25 19:37:46,340 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 26 transitions, 252 flow [2021-03-25 19:37:46,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 19:37:46,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 19:37:46,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2021-03-25 19:37:46,341 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2021-03-25 19:37:46,341 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 88 transitions. [2021-03-25 19:37:46,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 88 transitions. [2021-03-25 19:37:46,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:37:46,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 88 transitions. [2021-03-25 19:37:46,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 19:37:46,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 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 19:37:46,343 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 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 19:37:46,343 INFO L185 Difference]: Start difference. First operand has 44 places, 25 transitions, 215 flow. Second operand 4 states and 88 transitions. [2021-03-25 19:37:46,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 26 transitions, 252 flow [2021-03-25 19:37:46,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 26 transitions, 244 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 19:37:46,345 INFO L241 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2021-03-25 19:37:46,345 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2021-03-25 19:37:46,346 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 23 predicate places. [2021-03-25 19:37:46,346 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:37:46,346 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 0 transitions, 0 flow [2021-03-25 19:37:46,346 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 0 transitions, 0 flow [2021-03-25 19:37:46,346 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 19:37:46,346 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 19:37:46,346 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 19:37:46,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 19:37:46,347 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 19:37:46,354 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:37:46,354 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:37:46,354 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-25 19:37:46,355 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 19:37:46,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 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 19:37:46,355 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 19:37:46,358 INFO L202 PluginConnector]: Adding new model misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 07:37:46 BasicIcfg [2021-03-25 19:37:46,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 19:37:46,359 INFO L168 Benchmark]: Toolchain (without parser) took 2389.07 ms. Allocated memory was 255.9 MB in the beginning and 350.2 MB in the end (delta: 94.4 MB). Free memory was 236.3 MB in the beginning and 334.5 MB in the end (delta: -98.2 MB). Peak memory consumption was 73.4 MB. Max. memory is 16.0 GB. [2021-03-25 19:37:46,361 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 19:37:46,361 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.53 ms. Allocated memory is still 255.9 MB. Free memory was 236.3 MB in the beginning and 234.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 19:37:46,361 INFO L168 Benchmark]: Boogie Preprocessor took 15.87 ms. Allocated memory is still 255.9 MB. Free memory was 234.9 MB in the beginning and 234.0 MB in the end (delta: 928.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 19:37:46,361 INFO L168 Benchmark]: RCFGBuilder took 248.29 ms. Allocated memory is still 255.9 MB. Free memory was 233.8 MB in the beginning and 240.1 MB in the end (delta: -6.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.0 GB. [2021-03-25 19:37:46,362 INFO L168 Benchmark]: TraceAbstraction took 2093.67 ms. Allocated memory was 255.9 MB in the beginning and 350.2 MB in the end (delta: 94.4 MB). Free memory was 239.0 MB in the beginning and 334.5 MB in the end (delta: -95.5 MB). Peak memory consumption was 74.0 MB. Max. memory is 16.0 GB. [2021-03-25 19:37:46,363 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 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.53 ms. Allocated memory is still 255.9 MB. Free memory was 236.3 MB in the beginning and 234.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 15.87 ms. Allocated memory is still 255.9 MB. Free memory was 234.9 MB in the beginning and 234.0 MB in the end (delta: 928.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 248.29 ms. Allocated memory is still 255.9 MB. Free memory was 233.8 MB in the beginning and 240.1 MB in the end (delta: -6.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2093.67 ms. Allocated memory was 255.9 MB in the beginning and 350.2 MB in the end (delta: 94.4 MB). Free memory was 239.0 MB in the beginning and 334.5 MB in the end (delta: -95.5 MB). Peak memory consumption was 74.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 247.8ms, 26 PlacesBefore, 19 PlacesAfterwards, 21 TransitionsBefore, 14 TransitionsAfterwards, 126 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 44 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 44, positive: 44, positive conditional: 0, positive unconditional: 44, 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: 44, positive: 44, positive conditional: 0, positive unconditional: 44, 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: 44, positive: 44, positive conditional: 0, positive unconditional: 44, 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: 44, positive: 40, positive conditional: 0, positive unconditional: 40, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 29, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 44, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 44, unknown conditional: 0, unknown unconditional: 44] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 47.8ms, 18 PlacesBefore, 18 PlacesAfterwards, 16 TransitionsBefore, 16 TransitionsAfterwards, 58 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 5 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, 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: 5, positive: 5, positive conditional: 0, positive unconditional: 5, 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: 5, positive: 5, positive conditional: 0, positive unconditional: 5, 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: 5, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 15, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 63.3ms, 24 PlacesBefore, 24 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 66 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 8 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, 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: 6, positive: 6, positive conditional: 0, positive unconditional: 6, 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: 6, positive: 6, positive conditional: 0, positive unconditional: 6, 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: 6, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 10, Positive cache size: 10, Positive conditional cache size: 0, Positive unconditional cache size: 10, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 41.6ms, 31 PlacesBefore, 31 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 64 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.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] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , 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 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 80.8ms, 38 PlacesBefore, 38 PlacesAfterwards, 33 TransitionsBefore, 33 TransitionsAfterwards, 66 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.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] , 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: 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] , Statistics on independence cache: Total cache size (in pairs): 8, Positive cache size: 8, Positive conditional cache size: 0, Positive unconditional cache size: 8, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.7ms, 45 PlacesBefore, 44 PlacesAfterwards, 28 TransitionsBefore, 28 TransitionsAfterwards, 58 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.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] , 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: 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] , Statistics on independence cache: Total cache size (in pairs): 8, Positive cache size: 8, Positive conditional cache size: 0, Positive unconditional cache size: 8, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.6ms, 46 PlacesBefore, 44 PlacesAfterwards, 25 TransitionsBefore, 25 TransitionsAfterwards, 28 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.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] , 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: 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] , Statistics on independence cache: Total cache size (in pairs): 8, Positive cache size: 8, Positive conditional cache size: 0, Positive unconditional cache size: 8, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.3ms, 42 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.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] , 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: 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] , Statistics on independence cache: Total cache size (in pairs): 8, Positive cache size: 8, Positive conditional cache size: 0, Positive unconditional cache size: 8, 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1957.7ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 461.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 327.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 15 SDtfs, 34 SDslu, 4 SDs, 0 SdLazy, 179 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 151.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 102.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=267occurred in iteration=4, InterpolantAutomatonStates: 31, 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: 13.6ms SsaConstructionTime, 90.6ms SatisfiabilityAnalysisTime, 388.0ms InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 341 SizeOfPredicates, 2 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 7/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...