/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy6.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 19:32:10,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 19:32:10,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 19:32:10,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 19:32:10,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 19:32:10,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 19:32:10,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 19:32:10,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 19:32:10,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 19:32:10,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 19:32:10,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 19:32:10,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 19:32:10,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 19:32:10,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 19:32:10,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 19:32:10,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 19:32:10,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 19:32:10,801 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl-Hitting.epf [2021-08-13 19:32:10,834 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 19:32:10,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 19:32:10,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 19:32:10,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 19:32:10,838 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 19:32:10,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 19:32:10,838 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 19:32:10,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 19:32:10,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 19:32:10,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 19:32:10,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 19:32:10,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 19:32:10,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 19:32:10,840 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 19:32:10,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 19:32:10,840 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 19:32:10,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 19:32:10,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 19:32:10,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 19:32:10,841 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 19:32:10,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 19:32:10,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 19:32:10,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 19:32:10,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 19:32:10,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 19:32:10,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 19:32:10,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 19:32:10,843 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 19:32:10,843 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 19:32:10,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 19:32:10,843 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 19:32:10,843 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 19:32:10,844 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 19:32:10,844 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 19:32:11,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 19:32:11,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 19:32:11,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 19:32:11,232 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 19:32:11,233 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 19:32:11,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy6.wvr.bpl [2021-08-13 19:32:11,234 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy6.wvr.bpl' [2021-08-13 19:32:11,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 19:32:11,256 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 19:32:11,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 19:32:11,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 19:32:11,258 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 19:32:11,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:32:11" (1/1) ... [2021-08-13 19:32:11,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:32:11" (1/1) ... [2021-08-13 19:32:11,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 19:32:11,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 19:32:11,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 19:32:11,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 19:32:11,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:32:11" (1/1) ... [2021-08-13 19:32:11,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:32:11" (1/1) ... [2021-08-13 19:32:11,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:32:11" (1/1) ... [2021-08-13 19:32:11,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:32:11" (1/1) ... [2021-08-13 19:32:11,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:32:11" (1/1) ... [2021-08-13 19:32:11,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:32:11" (1/1) ... [2021-08-13 19:32:11,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:32:11" (1/1) ... [2021-08-13 19:32:11,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 19:32:11,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 19:32:11,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 19:32:11,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 19:32:11,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:32:11" (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 [2021-08-13 19:32:11,383 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-13 19:32:11,384 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-13 19:32:11,384 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-13 19:32:11,384 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-13 19:32:11,384 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-13 19:32:11,384 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-13 19:32:11,384 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 19:32:11,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 19:32:11,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 19:32:11,385 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 19:32:11,525 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 19:32:11,526 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 19:32:11,527 INFO L202 PluginConnector]: Adding new model easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 07:32:11 BoogieIcfgContainer [2021-08-13 19:32:11,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 19:32:11,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 19:32:11,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 19:32:11,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 19:32:11,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:32:11" (1/2) ... [2021-08-13 19:32:11,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@80d5932 and model type easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 07:32:11, skipping insertion in model container [2021-08-13 19:32:11,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 07:32:11" (2/2) ... [2021-08-13 19:32:11,534 INFO L111 eAbstractionObserver]: Analyzing ICFG easy6.wvr.bpl [2021-08-13 19:32:11,538 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 19:32:11,539 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 19:32:11,540 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 19:32:11,599 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-08-13 19:32:11,625 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-13 19:32:11,675 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 19:32:11,676 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 19:32:11,676 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 19:32:11,676 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 19:32:11,676 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 19:32:11,676 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 19:32:11,676 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 19:32:11,676 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 19:32:11,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 35 transitions, 86 flow [2021-08-13 19:32:11,711 INFO L129 PetriNetUnfolder]: 0/33 cut-off events. [2021-08-13 19:32:11,712 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-08-13 19:32:11,713 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 33 events. 0/33 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-08-13 19:32:11,714 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 35 transitions, 86 flow [2021-08-13 19:32:11,718 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 31 transitions, 74 flow [2021-08-13 19:32:11,729 INFO L129 PetriNetUnfolder]: 0/30 cut-off events. [2021-08-13 19:32:11,730 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-08-13 19:32:11,730 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 19:32:11,730 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 19:32:11,731 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 19:32:11,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 19:32:11,735 INFO L82 PathProgramCache]: Analyzing trace with hash 227240445, now seen corresponding path program 1 times [2021-08-13 19:32:11,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 19:32:11,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375326574] [2021-08-13 19:32:11,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 19:32:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 19:32:11,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:11,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:11,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:11,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:11,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:11,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:11,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:11,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:11,998 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-08-13 19:32:11,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:12,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:12,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 19:32:12,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 19:32:12,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375326574] [2021-08-13 19:32:12,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375326574] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 19:32:12,015 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 19:32:12,015 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 19:32:12,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492484419] [2021-08-13 19:32:12,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 19:32:12,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 19:32:12,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 19:32:12,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 19:32:12,044 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 35 [2021-08-13 19:32:12,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 74 flow. Second operand has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 7 states have internal predecessors, (202), 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) [2021-08-13 19:32:12,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 19:32:12,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 35 [2021-08-13 19:32:12,050 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 19:32:12,220 INFO L129 PetriNetUnfolder]: 1/63 cut-off events. [2021-08-13 19:32:12,220 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-08-13 19:32:12,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 63 events. 1/63 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 162 event pairs, 0 based on Foata normal form. 1/64 useless extension candidates. Maximal degree in co-relation 64. Up to 5 conditions per place. [2021-08-13 19:32:12,222 INFO L132 encePairwiseOnDemand]: 29/35 looper letters, 7 selfloop transitions, 7 changer transitions 2/41 dead transitions. [2021-08-13 19:32:12,222 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 126 flow [2021-08-13 19:32:12,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 19:32:12,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 19:32:12,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 241 transitions. [2021-08-13 19:32:12,235 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8607142857142858 [2021-08-13 19:32:12,235 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 241 transitions. [2021-08-13 19:32:12,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 241 transitions. [2021-08-13 19:32:12,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 19:32:12,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 241 transitions. [2021-08-13 19:32:12,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 30.125) internal successors, (241), 8 states have internal predecessors, (241), 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) [2021-08-13 19:32:12,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 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) [2021-08-13 19:32:12,259 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 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) [2021-08-13 19:32:12,259 INFO L348 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2021-08-13 19:32:12,259 INFO L482 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 126 flow [2021-08-13 19:32:12,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 7 states have internal predecessors, (202), 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) [2021-08-13 19:32:12,260 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 19:32:12,260 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 19:32:12,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 19:32:12,261 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 19:32:12,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 19:32:12,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1955713021, now seen corresponding path program 2 times [2021-08-13 19:32:12,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 19:32:12,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065358320] [2021-08-13 19:32:12,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 19:32:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 19:32:12,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:12,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:12,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:12,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 19:32:12,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:12,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 19:32:12,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:12,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 19:32:12,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:12,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:12,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:12,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 19:32:12,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:12,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 19:32:12,354 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 19:32:12,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065358320] [2021-08-13 19:32:12,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065358320] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 19:32:12,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 19:32:12,355 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 19:32:12,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709176850] [2021-08-13 19:32:12,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 19:32:12,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 19:32:12,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 19:32:12,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-13 19:32:12,358 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 35 [2021-08-13 19:32:12,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 126 flow. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 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) [2021-08-13 19:32:12,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 19:32:12,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 35 [2021-08-13 19:32:12,359 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 19:32:12,510 INFO L129 PetriNetUnfolder]: 40/257 cut-off events. [2021-08-13 19:32:12,511 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2021-08-13 19:32:12,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 257 events. 40/257 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1473 event pairs, 4 based on Foata normal form. 2/255 useless extension candidates. Maximal degree in co-relation 401. Up to 29 conditions per place. [2021-08-13 19:32:12,514 INFO L132 encePairwiseOnDemand]: 26/35 looper letters, 18 selfloop transitions, 17 changer transitions 4/68 dead transitions. [2021-08-13 19:32:12,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 68 transitions, 254 flow [2021-08-13 19:32:12,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 19:32:12,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 19:32:12,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 254 transitions. [2021-08-13 19:32:12,528 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8063492063492064 [2021-08-13 19:32:12,530 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 254 transitions. [2021-08-13 19:32:12,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 254 transitions. [2021-08-13 19:32:12,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 19:32:12,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 254 transitions. [2021-08-13 19:32:12,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 28.22222222222222) internal successors, (254), 9 states have internal predecessors, (254), 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) [2021-08-13 19:32:12,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 35.0) internal successors, (350), 10 states have internal predecessors, (350), 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) [2021-08-13 19:32:12,537 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 35.0) internal successors, (350), 10 states have internal predecessors, (350), 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) [2021-08-13 19:32:12,538 INFO L348 CegarLoopForPetriNet]: 38 programPoint places, 15 predicate places. [2021-08-13 19:32:12,538 INFO L482 AbstractCegarLoop]: Abstraction has has 53 places, 68 transitions, 254 flow [2021-08-13 19:32:12,539 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 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) [2021-08-13 19:32:12,539 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 19:32:12,539 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 19:32:12,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 19:32:12,539 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 19:32:12,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 19:32:12,540 INFO L82 PathProgramCache]: Analyzing trace with hash 123548063, now seen corresponding path program 3 times [2021-08-13 19:32:12,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 19:32:12,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306814710] [2021-08-13 19:32:12,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 19:32:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 19:32:12,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:12,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:12,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:12,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:12,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:12,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:12,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 19:32:12,560 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 19:32:12,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306814710] [2021-08-13 19:32:12,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306814710] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 19:32:12,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 19:32:12,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 19:32:12,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154128734] [2021-08-13 19:32:12,561 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 19:32:12,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 19:32:12,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 19:32:12,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 19:32:12,563 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 35 [2021-08-13 19:32:12,563 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 68 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2021-08-13 19:32:12,563 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 19:32:12,563 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 35 [2021-08-13 19:32:12,563 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 19:32:12,599 INFO L129 PetriNetUnfolder]: 39/264 cut-off events. [2021-08-13 19:32:12,599 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2021-08-13 19:32:12,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 264 events. 39/264 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1516 event pairs, 5 based on Foata normal form. 4/262 useless extension candidates. Maximal degree in co-relation 426. Up to 28 conditions per place. [2021-08-13 19:32:12,601 INFO L132 encePairwiseOnDemand]: 32/35 looper letters, 2 selfloop transitions, 2 changer transitions 4/68 dead transitions. [2021-08-13 19:32:12,601 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 68 transitions, 262 flow [2021-08-13 19:32:12,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 19:32:12,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 19:32:12,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2021-08-13 19:32:12,603 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2021-08-13 19:32:12,603 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 95 transitions. [2021-08-13 19:32:12,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 95 transitions. [2021-08-13 19:32:12,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 19:32:12,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 95 transitions. [2021-08-13 19:32:12,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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) [2021-08-13 19:32:12,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2021-08-13 19:32:12,605 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2021-08-13 19:32:12,605 INFO L348 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places. [2021-08-13 19:32:12,605 INFO L482 AbstractCegarLoop]: Abstraction has has 55 places, 68 transitions, 262 flow [2021-08-13 19:32:12,605 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2021-08-13 19:32:12,605 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 19:32:12,605 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 19:32:12,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 19:32:12,606 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 19:32:12,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 19:32:12,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1481902567, now seen corresponding path program 4 times [2021-08-13 19:32:12,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 19:32:12,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567315251] [2021-08-13 19:32:12,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 19:32:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 19:32:12,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:12,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:12,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:12,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 19:32:12,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:12,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 19:32:12,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:12,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 19:32:12,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:12,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:12,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:12,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 19:32:12,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:12,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:12,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 19:32:12,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 19:32:12,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567315251] [2021-08-13 19:32:12,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567315251] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 19:32:12,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 19:32:12,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 19:32:12,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981451776] [2021-08-13 19:32:12,699 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 19:32:12,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 19:32:12,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 19:32:12,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-13 19:32:12,701 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 35 [2021-08-13 19:32:12,702 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 68 transitions, 262 flow. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 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) [2021-08-13 19:32:12,702 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 19:32:12,702 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 35 [2021-08-13 19:32:12,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 19:32:12,837 INFO L129 PetriNetUnfolder]: 30/228 cut-off events. [2021-08-13 19:32:12,837 INFO L130 PetriNetUnfolder]: For 70/92 co-relation queries the response was YES. [2021-08-13 19:32:12,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 228 events. 30/228 cut-off events. For 70/92 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1241 event pairs, 1 based on Foata normal form. 11/236 useless extension candidates. Maximal degree in co-relation 462. Up to 35 conditions per place. [2021-08-13 19:32:12,842 INFO L132 encePairwiseOnDemand]: 26/35 looper letters, 21 selfloop transitions, 20 changer transitions 17/87 dead transitions. [2021-08-13 19:32:12,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 87 transitions, 450 flow [2021-08-13 19:32:12,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 19:32:12,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 19:32:12,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 251 transitions. [2021-08-13 19:32:12,844 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7968253968253968 [2021-08-13 19:32:12,844 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 251 transitions. [2021-08-13 19:32:12,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 251 transitions. [2021-08-13 19:32:12,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 19:32:12,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 251 transitions. [2021-08-13 19:32:12,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 27.88888888888889) internal successors, (251), 9 states have internal predecessors, (251), 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) [2021-08-13 19:32:12,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 35.0) internal successors, (350), 10 states have internal predecessors, (350), 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) [2021-08-13 19:32:12,848 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 35.0) internal successors, (350), 10 states have internal predecessors, (350), 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) [2021-08-13 19:32:12,849 INFO L348 CegarLoopForPetriNet]: 38 programPoint places, 25 predicate places. [2021-08-13 19:32:12,849 INFO L482 AbstractCegarLoop]: Abstraction has has 63 places, 87 transitions, 450 flow [2021-08-13 19:32:12,849 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 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) [2021-08-13 19:32:12,849 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 19:32:12,849 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 19:32:12,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 19:32:12,850 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 19:32:12,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 19:32:12,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1182978785, now seen corresponding path program 5 times [2021-08-13 19:32:12,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 19:32:12,854 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99629132] [2021-08-13 19:32:12,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 19:32:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 19:32:12,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:12,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:12,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:12,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:12,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:12,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:12,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 19:32:12,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 19:32:12,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99629132] [2021-08-13 19:32:12,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99629132] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 19:32:12,886 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 19:32:12,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 19:32:12,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935463946] [2021-08-13 19:32:12,910 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 19:32:12,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 19:32:12,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 19:32:12,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 19:32:12,911 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 35 [2021-08-13 19:32:12,911 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 87 transitions, 450 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2021-08-13 19:32:12,912 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 19:32:12,912 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 35 [2021-08-13 19:32:12,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 19:32:12,938 INFO L129 PetriNetUnfolder]: 20/195 cut-off events. [2021-08-13 19:32:12,938 INFO L130 PetriNetUnfolder]: For 53/69 co-relation queries the response was YES. [2021-08-13 19:32:12,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 195 events. 20/195 cut-off events. For 53/69 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1000 event pairs, 2 based on Foata normal form. 3/197 useless extension candidates. Maximal degree in co-relation 402. Up to 27 conditions per place. [2021-08-13 19:32:12,940 INFO L132 encePairwiseOnDemand]: 32/35 looper letters, 2 selfloop transitions, 2 changer transitions 20/85 dead transitions. [2021-08-13 19:32:12,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 85 transitions, 446 flow [2021-08-13 19:32:12,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 19:32:12,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 19:32:12,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2021-08-13 19:32:12,941 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2021-08-13 19:32:12,941 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 95 transitions. [2021-08-13 19:32:12,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 95 transitions. [2021-08-13 19:32:12,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 19:32:12,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 95 transitions. [2021-08-13 19:32:12,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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) [2021-08-13 19:32:12,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2021-08-13 19:32:12,942 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2021-08-13 19:32:12,943 INFO L348 CegarLoopForPetriNet]: 38 programPoint places, 27 predicate places. [2021-08-13 19:32:12,943 INFO L482 AbstractCegarLoop]: Abstraction has has 65 places, 85 transitions, 446 flow [2021-08-13 19:32:12,943 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2021-08-13 19:32:12,943 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 19:32:12,943 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 19:32:12,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 19:32:12,943 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 19:32:12,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 19:32:12,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1404838709, now seen corresponding path program 6 times [2021-08-13 19:32:12,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 19:32:12,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738074632] [2021-08-13 19:32:12,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 19:32:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 19:32:12,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:12,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:12,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:12,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 19:32:12,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:12,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:13,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:13,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:13,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:13,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:13,059 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-08-13 19:32:13,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 19:32:13,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:13,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 19:32:13,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 19:32:13,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738074632] [2021-08-13 19:32:13,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738074632] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 19:32:13,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 19:32:13,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 19:32:13,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214544866] [2021-08-13 19:32:13,075 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 19:32:13,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 19:32:13,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 19:32:13,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-13 19:32:13,077 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 35 [2021-08-13 19:32:13,077 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 85 transitions, 446 flow. Second operand has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2021-08-13 19:32:13,077 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 19:32:13,077 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 35 [2021-08-13 19:32:13,077 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 19:32:13,258 INFO L129 PetriNetUnfolder]: 38/309 cut-off events. [2021-08-13 19:32:13,258 INFO L130 PetriNetUnfolder]: For 236/298 co-relation queries the response was YES. [2021-08-13 19:32:13,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 309 events. 38/309 cut-off events. For 236/298 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1951 event pairs, 2 based on Foata normal form. 9/316 useless extension candidates. Maximal degree in co-relation 755. Up to 46 conditions per place. [2021-08-13 19:32:13,260 INFO L132 encePairwiseOnDemand]: 25/35 looper letters, 28 selfloop transitions, 27 changer transitions 24/108 dead transitions. [2021-08-13 19:32:13,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 108 transitions, 738 flow [2021-08-13 19:32:13,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 19:32:13,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 19:32:13,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 280 transitions. [2021-08-13 19:32:13,262 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8 [2021-08-13 19:32:13,262 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 280 transitions. [2021-08-13 19:32:13,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 280 transitions. [2021-08-13 19:32:13,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 19:32:13,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 280 transitions. [2021-08-13 19:32:13,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 28.0) internal successors, (280), 10 states have internal predecessors, (280), 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) [2021-08-13 19:32:13,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 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) [2021-08-13 19:32:13,264 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 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) [2021-08-13 19:32:13,265 INFO L348 CegarLoopForPetriNet]: 38 programPoint places, 36 predicate places. [2021-08-13 19:32:13,265 INFO L482 AbstractCegarLoop]: Abstraction has has 74 places, 108 transitions, 738 flow [2021-08-13 19:32:13,265 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2021-08-13 19:32:13,265 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 19:32:13,265 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 19:32:13,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 19:32:13,265 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 19:32:13,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 19:32:13,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1942577855, now seen corresponding path program 7 times [2021-08-13 19:32:13,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 19:32:13,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736952812] [2021-08-13 19:32:13,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 19:32:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 19:32:13,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:13,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 19:32:13,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:13,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:13,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:13,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:13,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:13,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 19:32:13,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:13,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 19:32:13,362 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 19:32:13,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736952812] [2021-08-13 19:32:13,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736952812] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 19:32:13,364 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 19:32:13,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 19:32:13,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826341109] [2021-08-13 19:32:13,365 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 19:32:13,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 19:32:13,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 19:32:13,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-13 19:32:13,367 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 35 [2021-08-13 19:32:13,367 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 108 transitions, 738 flow. Second operand has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2021-08-13 19:32:13,367 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 19:32:13,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 35 [2021-08-13 19:32:13,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 19:32:13,533 INFO L129 PetriNetUnfolder]: 29/287 cut-off events. [2021-08-13 19:32:13,533 INFO L130 PetriNetUnfolder]: For 403/487 co-relation queries the response was YES. [2021-08-13 19:32:13,534 INFO L84 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 287 events. 29/287 cut-off events. For 403/487 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1785 event pairs, 2 based on Foata normal form. 3/289 useless extension candidates. Maximal degree in co-relation 802. Up to 42 conditions per place. [2021-08-13 19:32:13,535 INFO L132 encePairwiseOnDemand]: 25/35 looper letters, 27 selfloop transitions, 25 changer transitions 24/105 dead transitions. [2021-08-13 19:32:13,535 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 105 transitions, 862 flow [2021-08-13 19:32:13,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 19:32:13,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 19:32:13,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 279 transitions. [2021-08-13 19:32:13,537 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7971428571428572 [2021-08-13 19:32:13,537 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 279 transitions. [2021-08-13 19:32:13,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 279 transitions. [2021-08-13 19:32:13,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 19:32:13,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 279 transitions. [2021-08-13 19:32:13,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 27.9) internal successors, (279), 10 states have internal predecessors, (279), 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) [2021-08-13 19:32:13,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 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) [2021-08-13 19:32:13,539 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 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) [2021-08-13 19:32:13,539 INFO L348 CegarLoopForPetriNet]: 38 programPoint places, 45 predicate places. [2021-08-13 19:32:13,539 INFO L482 AbstractCegarLoop]: Abstraction has has 83 places, 105 transitions, 862 flow [2021-08-13 19:32:13,541 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2021-08-13 19:32:13,541 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 19:32:13,541 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 19:32:13,541 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 19:32:13,541 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 19:32:13,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 19:32:13,542 INFO L82 PathProgramCache]: Analyzing trace with hash -530629941, now seen corresponding path program 8 times [2021-08-13 19:32:13,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 19:32:13,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296093683] [2021-08-13 19:32:13,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 19:32:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 19:32:13,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:13,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:13,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:13,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:13,622 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-08-13 19:32:13,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:13,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:13,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 19:32:13,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 19:32:13,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296093683] [2021-08-13 19:32:13,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296093683] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 19:32:13,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 19:32:13,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 19:32:13,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538667195] [2021-08-13 19:32:13,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 19:32:13,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 19:32:13,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 19:32:13,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 19:32:13,644 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 35 [2021-08-13 19:32:13,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 105 transitions, 862 flow. Second operand has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 7 states have internal predecessors, (202), 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) [2021-08-13 19:32:13,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 19:32:13,645 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 35 [2021-08-13 19:32:13,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 19:32:13,753 INFO L129 PetriNetUnfolder]: 29/281 cut-off events. [2021-08-13 19:32:13,753 INFO L130 PetriNetUnfolder]: For 430/516 co-relation queries the response was YES. [2021-08-13 19:32:13,754 INFO L84 FinitePrefix]: Finished finitePrefix Result has 928 conditions, 281 events. 29/281 cut-off events. For 430/516 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1753 event pairs, 2 based on Foata normal form. 3/283 useless extension candidates. Maximal degree in co-relation 858. Up to 42 conditions per place. [2021-08-13 19:32:13,755 INFO L132 encePairwiseOnDemand]: 29/35 looper letters, 4 selfloop transitions, 8 changer transitions 51/106 dead transitions. [2021-08-13 19:32:13,755 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 106 transitions, 900 flow [2021-08-13 19:32:13,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 19:32:13,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 19:32:13,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 240 transitions. [2021-08-13 19:32:13,756 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2021-08-13 19:32:13,756 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 240 transitions. [2021-08-13 19:32:13,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 240 transitions. [2021-08-13 19:32:13,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 19:32:13,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 240 transitions. [2021-08-13 19:32:13,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 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) [2021-08-13 19:32:13,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 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) [2021-08-13 19:32:13,758 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 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) [2021-08-13 19:32:13,759 INFO L348 CegarLoopForPetriNet]: 38 programPoint places, 52 predicate places. [2021-08-13 19:32:13,759 INFO L482 AbstractCegarLoop]: Abstraction has has 90 places, 106 transitions, 900 flow [2021-08-13 19:32:13,759 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 7 states have internal predecessors, (202), 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) [2021-08-13 19:32:13,759 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 19:32:13,759 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 19:32:13,759 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 19:32:13,760 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 19:32:13,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 19:32:13,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1020076079, now seen corresponding path program 9 times [2021-08-13 19:32:13,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 19:32:13,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024721689] [2021-08-13 19:32:13,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 19:32:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 19:32:13,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:13,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 19:32:13,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:13,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:13,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:13,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:13,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:13,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:13,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:13,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:13,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 19:32:13,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 19:32:13,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024721689] [2021-08-13 19:32:13,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024721689] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 19:32:13,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 19:32:13,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 19:32:13,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989034760] [2021-08-13 19:32:13,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 19:32:13,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 19:32:13,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 19:32:13,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-08-13 19:32:13,869 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 35 [2021-08-13 19:32:13,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 106 transitions, 900 flow. Second operand has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2021-08-13 19:32:13,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 19:32:13,869 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 35 [2021-08-13 19:32:13,869 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 19:32:14,054 INFO L129 PetriNetUnfolder]: 28/282 cut-off events. [2021-08-13 19:32:14,055 INFO L130 PetriNetUnfolder]: For 693/813 co-relation queries the response was YES. [2021-08-13 19:32:14,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1037 conditions, 282 events. 28/282 cut-off events. For 693/813 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1751 event pairs, 2 based on Foata normal form. 7/288 useless extension candidates. Maximal degree in co-relation 964. Up to 42 conditions per place. [2021-08-13 19:32:14,056 INFO L132 encePairwiseOnDemand]: 25/35 looper letters, 11 selfloop transitions, 15 changer transitions 52/105 dead transitions. [2021-08-13 19:32:14,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 105 transitions, 1036 flow [2021-08-13 19:32:14,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 19:32:14,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 19:32:14,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 282 transitions. [2021-08-13 19:32:14,058 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8057142857142857 [2021-08-13 19:32:14,058 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 282 transitions. [2021-08-13 19:32:14,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 282 transitions. [2021-08-13 19:32:14,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 19:32:14,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 282 transitions. [2021-08-13 19:32:14,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 28.2) internal successors, (282), 10 states have internal predecessors, (282), 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) [2021-08-13 19:32:14,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 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) [2021-08-13 19:32:14,061 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 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) [2021-08-13 19:32:14,061 INFO L348 CegarLoopForPetriNet]: 38 programPoint places, 61 predicate places. [2021-08-13 19:32:14,061 INFO L482 AbstractCegarLoop]: Abstraction has has 99 places, 105 transitions, 1036 flow [2021-08-13 19:32:14,061 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2021-08-13 19:32:14,061 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 19:32:14,062 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 19:32:14,062 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 19:32:14,062 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 19:32:14,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 19:32:14,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1608246209, now seen corresponding path program 10 times [2021-08-13 19:32:14,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 19:32:14,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540323725] [2021-08-13 19:32:14,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 19:32:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 19:32:14,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:14,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 19:32:14,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:14,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:14,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:14,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:14,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:14,138 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-08-13 19:32:14,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:14,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:14,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 19:32:14,151 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 19:32:14,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540323725] [2021-08-13 19:32:14,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540323725] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 19:32:14,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 19:32:14,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 19:32:14,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528354443] [2021-08-13 19:32:14,152 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 19:32:14,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 19:32:14,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 19:32:14,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-08-13 19:32:14,153 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 35 [2021-08-13 19:32:14,154 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 105 transitions, 1036 flow. Second operand has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2021-08-13 19:32:14,154 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 19:32:14,154 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 35 [2021-08-13 19:32:14,154 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 19:32:14,311 INFO L129 PetriNetUnfolder]: 21/236 cut-off events. [2021-08-13 19:32:14,312 INFO L130 PetriNetUnfolder]: For 849/965 co-relation queries the response was YES. [2021-08-13 19:32:14,312 INFO L84 FinitePrefix]: Finished finitePrefix Result has 976 conditions, 236 events. 21/236 cut-off events. For 849/965 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1361 event pairs, 2 based on Foata normal form. 1/236 useless extension candidates. Maximal degree in co-relation 912. Up to 33 conditions per place. [2021-08-13 19:32:14,313 INFO L132 encePairwiseOnDemand]: 25/35 looper letters, 9 selfloop transitions, 7 changer transitions 59/102 dead transitions. [2021-08-13 19:32:14,313 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 102 transitions, 1140 flow [2021-08-13 19:32:14,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 19:32:14,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 19:32:14,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 281 transitions. [2021-08-13 19:32:14,317 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8028571428571428 [2021-08-13 19:32:14,317 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 281 transitions. [2021-08-13 19:32:14,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 281 transitions. [2021-08-13 19:32:14,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 19:32:14,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 281 transitions. [2021-08-13 19:32:14,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 28.1) internal successors, (281), 10 states have internal predecessors, (281), 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) [2021-08-13 19:32:14,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 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) [2021-08-13 19:32:14,319 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 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) [2021-08-13 19:32:14,319 INFO L348 CegarLoopForPetriNet]: 38 programPoint places, 70 predicate places. [2021-08-13 19:32:14,319 INFO L482 AbstractCegarLoop]: Abstraction has has 108 places, 102 transitions, 1140 flow [2021-08-13 19:32:14,320 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2021-08-13 19:32:14,320 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 19:32:14,320 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 19:32:14,320 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 19:32:14,320 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 19:32:14,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 19:32:14,321 INFO L82 PathProgramCache]: Analyzing trace with hash 2039470923, now seen corresponding path program 11 times [2021-08-13 19:32:14,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 19:32:14,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890572208] [2021-08-13 19:32:14,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 19:32:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 19:32:14,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:14,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 19:32:14,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:14,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:14,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:14,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:14,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:14,376 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-08-13 19:32:14,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 19:32:14,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:14,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 19:32:14,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 19:32:14,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890572208] [2021-08-13 19:32:14,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890572208] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 19:32:14,389 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 19:32:14,389 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 19:32:14,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763069938] [2021-08-13 19:32:14,389 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 19:32:14,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 19:32:14,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 19:32:14,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-13 19:32:14,390 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 35 [2021-08-13 19:32:14,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 102 transitions, 1140 flow. Second operand has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2021-08-13 19:32:14,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 19:32:14,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 35 [2021-08-13 19:32:14,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 19:32:14,572 INFO L129 PetriNetUnfolder]: 30/272 cut-off events. [2021-08-13 19:32:14,573 INFO L130 PetriNetUnfolder]: For 1426/1554 co-relation queries the response was YES. [2021-08-13 19:32:14,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1239 conditions, 272 events. 30/272 cut-off events. For 1426/1554 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1631 event pairs, 2 based on Foata normal form. 11/282 useless extension candidates. Maximal degree in co-relation 1170. Up to 45 conditions per place. [2021-08-13 19:32:14,574 INFO L132 encePairwiseOnDemand]: 25/35 looper letters, 8 selfloop transitions, 12 changer transitions 64/111 dead transitions. [2021-08-13 19:32:14,574 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 111 transitions, 1424 flow [2021-08-13 19:32:14,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 19:32:14,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 19:32:14,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 281 transitions. [2021-08-13 19:32:14,576 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8028571428571428 [2021-08-13 19:32:14,576 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 281 transitions. [2021-08-13 19:32:14,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 281 transitions. [2021-08-13 19:32:14,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 19:32:14,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 281 transitions. [2021-08-13 19:32:14,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 28.1) internal successors, (281), 10 states have internal predecessors, (281), 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) [2021-08-13 19:32:14,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 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) [2021-08-13 19:32:14,578 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 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) [2021-08-13 19:32:14,578 INFO L348 CegarLoopForPetriNet]: 38 programPoint places, 79 predicate places. [2021-08-13 19:32:14,579 INFO L482 AbstractCegarLoop]: Abstraction has has 117 places, 111 transitions, 1424 flow [2021-08-13 19:32:14,579 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2021-08-13 19:32:14,579 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 19:32:14,579 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 19:32:14,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 19:32:14,579 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 19:32:14,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 19:32:14,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1714403733, now seen corresponding path program 12 times [2021-08-13 19:32:14,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 19:32:14,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649204357] [2021-08-13 19:32:14,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 19:32:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 19:32:14,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:14,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 19:32:14,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:14,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:14,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:14,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:14,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:14,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 19:32:14,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:14,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 19:32:14,650 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 19:32:14,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649204357] [2021-08-13 19:32:14,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649204357] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 19:32:14,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 19:32:14,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 19:32:14,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113106185] [2021-08-13 19:32:14,650 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 19:32:14,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 19:32:14,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 19:32:14,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-13 19:32:14,651 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 35 [2021-08-13 19:32:14,652 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 111 transitions, 1424 flow. Second operand has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2021-08-13 19:32:14,652 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 19:32:14,652 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 35 [2021-08-13 19:32:14,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 19:32:14,821 INFO L129 PetriNetUnfolder]: 21/250 cut-off events. [2021-08-13 19:32:14,821 INFO L130 PetriNetUnfolder]: For 1544/1634 co-relation queries the response was YES. [2021-08-13 19:32:14,822 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1231 conditions, 250 events. 21/250 cut-off events. For 1544/1634 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1483 event pairs, 2 based on Foata normal form. 5/254 useless extension candidates. Maximal degree in co-relation 1159. Up to 36 conditions per place. [2021-08-13 19:32:14,823 INFO L132 encePairwiseOnDemand]: 25/35 looper letters, 7 selfloop transitions, 7 changer transitions 67/108 dead transitions. [2021-08-13 19:32:14,823 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 108 transitions, 1528 flow [2021-08-13 19:32:14,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 19:32:14,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 19:32:14,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 280 transitions. [2021-08-13 19:32:14,825 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8 [2021-08-13 19:32:14,825 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 280 transitions. [2021-08-13 19:32:14,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 280 transitions. [2021-08-13 19:32:14,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 19:32:14,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 280 transitions. [2021-08-13 19:32:14,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 28.0) internal successors, (280), 10 states have internal predecessors, (280), 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) [2021-08-13 19:32:14,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 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) [2021-08-13 19:32:14,829 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 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) [2021-08-13 19:32:14,829 INFO L348 CegarLoopForPetriNet]: 38 programPoint places, 88 predicate places. [2021-08-13 19:32:14,829 INFO L482 AbstractCegarLoop]: Abstraction has has 126 places, 108 transitions, 1528 flow [2021-08-13 19:32:14,829 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2021-08-13 19:32:14,829 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 19:32:14,829 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 19:32:14,830 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-13 19:32:14,830 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 19:32:14,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 19:32:14,831 INFO L82 PathProgramCache]: Analyzing trace with hash 773312577, now seen corresponding path program 13 times [2021-08-13 19:32:14,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 19:32:14,832 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580263725] [2021-08-13 19:32:14,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 19:32:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 19:32:14,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:14,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 19:32:14,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:14,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:14,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:14,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:14,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:14,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:14,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:14,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:14,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 19:32:14,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 19:32:14,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580263725] [2021-08-13 19:32:14,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580263725] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 19:32:14,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 19:32:14,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 19:32:14,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753107021] [2021-08-13 19:32:14,918 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 19:32:14,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 19:32:14,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 19:32:14,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-13 19:32:14,919 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 35 [2021-08-13 19:32:14,920 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 108 transitions, 1528 flow. Second operand has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2021-08-13 19:32:14,920 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 19:32:14,920 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 35 [2021-08-13 19:32:14,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 19:32:15,076 INFO L129 PetriNetUnfolder]: 20/251 cut-off events. [2021-08-13 19:32:15,076 INFO L130 PetriNetUnfolder]: For 1930/2012 co-relation queries the response was YES. [2021-08-13 19:32:15,076 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1324 conditions, 251 events. 20/251 cut-off events. For 1930/2012 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1495 event pairs, 2 based on Foata normal form. 9/259 useless extension candidates. Maximal degree in co-relation 1249. Up to 36 conditions per place. [2021-08-13 19:32:15,077 INFO L132 encePairwiseOnDemand]: 25/35 looper letters, 2 selfloop transitions, 10 changer transitions 69/107 dead transitions. [2021-08-13 19:32:15,077 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 107 transitions, 1660 flow [2021-08-13 19:32:15,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 19:32:15,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 19:32:15,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 279 transitions. [2021-08-13 19:32:15,079 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7971428571428572 [2021-08-13 19:32:15,079 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 279 transitions. [2021-08-13 19:32:15,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 279 transitions. [2021-08-13 19:32:15,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 19:32:15,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 279 transitions. [2021-08-13 19:32:15,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 27.9) internal successors, (279), 10 states have internal predecessors, (279), 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) [2021-08-13 19:32:15,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 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) [2021-08-13 19:32:15,081 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 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) [2021-08-13 19:32:15,081 INFO L348 CegarLoopForPetriNet]: 38 programPoint places, 97 predicate places. [2021-08-13 19:32:15,081 INFO L482 AbstractCegarLoop]: Abstraction has has 135 places, 107 transitions, 1660 flow [2021-08-13 19:32:15,082 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2021-08-13 19:32:15,082 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 19:32:15,082 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 19:32:15,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-13 19:32:15,082 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 19:32:15,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 19:32:15,082 INFO L82 PathProgramCache]: Analyzing trace with hash -645640009, now seen corresponding path program 14 times [2021-08-13 19:32:15,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 19:32:15,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581219423] [2021-08-13 19:32:15,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 19:32:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 19:32:15,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:15,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:15,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:15,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 19:32:15,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:15,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:15,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:15,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:15,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:15,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:15,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:15,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:15,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:15,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:15,137 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-08-13 19:32:15,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 19:32:15,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 19:32:15,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 19:32:15,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 19:32:15,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 19:32:15,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581219423] [2021-08-13 19:32:15,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581219423] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 19:32:15,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 19:32:15,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 19:32:15,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832727713] [2021-08-13 19:32:15,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 19:32:15,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 19:32:15,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 19:32:15,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-13 19:32:15,150 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 35 [2021-08-13 19:32:15,151 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 107 transitions, 1660 flow. Second operand has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2021-08-13 19:32:15,151 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 19:32:15,151 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 35 [2021-08-13 19:32:15,151 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 19:32:15,318 INFO L129 PetriNetUnfolder]: 13/205 cut-off events. [2021-08-13 19:32:15,318 INFO L130 PetriNetUnfolder]: For 1880/1910 co-relation queries the response was YES. [2021-08-13 19:32:15,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1191 conditions, 205 events. 13/205 cut-off events. For 1880/1910 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1161 event pairs, 2 based on Foata normal form. 3/207 useless extension candidates. Maximal degree in co-relation 1125. Up to 26 conditions per place. [2021-08-13 19:32:15,319 INFO L132 encePairwiseOnDemand]: 25/35 looper letters, 0 selfloop transitions, 0 changer transitions 95/95 dead transitions. [2021-08-13 19:32:15,319 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 95 transitions, 1694 flow [2021-08-13 19:32:15,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 19:32:15,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 19:32:15,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 278 transitions. [2021-08-13 19:32:15,320 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7942857142857143 [2021-08-13 19:32:15,320 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 278 transitions. [2021-08-13 19:32:15,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 278 transitions. [2021-08-13 19:32:15,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 19:32:15,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 278 transitions. [2021-08-13 19:32:15,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 27.8) internal successors, (278), 10 states have internal predecessors, (278), 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) [2021-08-13 19:32:15,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 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) [2021-08-13 19:32:15,322 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 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) [2021-08-13 19:32:15,322 INFO L348 CegarLoopForPetriNet]: 38 programPoint places, 102 predicate places. [2021-08-13 19:32:15,323 INFO L482 AbstractCegarLoop]: Abstraction has has 140 places, 95 transitions, 1694 flow [2021-08-13 19:32:15,323 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2021-08-13 19:32:15,323 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown