/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-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 12:52:09,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 12:52:09,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 12:52:09,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 12:52:09,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 12:52:09,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 12:52:09,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 12:52:09,663 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-Hitting.epf [2021-08-13 12:52:09,678 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 12:52:09,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 12:52:09,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 12:52:09,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 12:52:09,679 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 12:52:09,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 12:52:09,680 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 12:52:09,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 12:52:09,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 12:52:09,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 12:52:09,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 12:52:09,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 12:52:09,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 12:52:09,680 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 12:52:09,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 12:52:09,681 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 12:52:09,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 12:52:09,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 12:52:09,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 12:52:09,681 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 12:52:09,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 12:52:09,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 12:52:09,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 12:52:09,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 12:52:09,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 12:52:09,682 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 12:52:09,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 12:52:09,682 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 12:52:09,683 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 12:52:09,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 12:52:09,683 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 12:52:09,683 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 12:52:09,683 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 12:52:09,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 12:52:09,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 12:52:09,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 12:52:09,956 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 12:52:09,957 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 12:52:09,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl [2021-08-13 12:52:09,958 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl' [2021-08-13 12:52:09,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 12:52:09,979 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 12:52:09,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 12:52:09,980 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 12:52:09,980 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 12:52:09,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:52:09" (1/1) ... [2021-08-13 12:52:09,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:52:09" (1/1) ... [2021-08-13 12:52:10,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 12:52:10,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 12:52:10,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 12:52:10,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 12:52:10,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:52:09" (1/1) ... [2021-08-13 12:52:10,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:52:09" (1/1) ... [2021-08-13 12:52:10,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:52:09" (1/1) ... [2021-08-13 12:52:10,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:52:09" (1/1) ... [2021-08-13 12:52:10,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:52:09" (1/1) ... [2021-08-13 12:52:10,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:52:09" (1/1) ... [2021-08-13 12:52:10,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:52:09" (1/1) ... [2021-08-13 12:52:10,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 12:52:10,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 12:52:10,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 12:52:10,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 12:52:10,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:52:09" (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 12:52:10,074 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-08-13 12:52:10,074 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-08-13 12:52:10,074 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-08-13 12:52:10,074 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-08-13 12:52:10,074 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-08-13 12:52:10,074 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-08-13 12:52:10,074 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-08-13 12:52:10,074 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-08-13 12:52:10,075 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-08-13 12:52:10,075 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-08-13 12:52:10,075 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-08-13 12:52:10,075 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-08-13 12:52:10,075 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-08-13 12:52:10,075 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-08-13 12:52:10,075 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-08-13 12:52:10,075 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 12:52:10,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 12:52:10,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 12:52:10,075 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-08-13 12:52:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-08-13 12:52:10,076 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-08-13 12:52:10,076 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-08-13 12:52:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-08-13 12:52:10,076 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-08-13 12:52:10,076 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-08-13 12:52:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-08-13 12:52:10,076 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-08-13 12:52:10,076 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-08-13 12:52:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-08-13 12:52:10,076 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-08-13 12:52:10,077 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 12:52:10,205 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 12:52:10,205 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 12:52:10,206 INFO L202 PluginConnector]: Adding new model example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 12:52:10 BoogieIcfgContainer [2021-08-13 12:52:10,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 12:52:10,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 12:52:10,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 12:52:10,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 12:52:10,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:52:09" (1/2) ... [2021-08-13 12:52:10,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@376b7cbd and model type example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 12:52:10, skipping insertion in model container [2021-08-13 12:52:10,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 12:52:10" (2/2) ... [2021-08-13 12:52:10,211 INFO L111 eAbstractionObserver]: Analyzing ICFG example_9.bpl [2021-08-13 12:52:10,215 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 12:52:10,215 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 12:52:10,216 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 12:52:10,361 INFO L149 ThreadInstanceAdder]: Constructed 81 joinOtherThreadTransitions. [2021-08-13 12:52:10,386 INFO L255 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-08-13 12:52:10,411 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 12:52:10,411 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 12:52:10,411 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 12:52:10,411 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 12:52:10,411 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 12:52:10,411 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 12:52:10,411 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 12:52:10,411 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 12:52:10,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 76 places, 120 transitions, 528 flow [2021-08-13 12:52:10,684 INFO L129 PetriNetUnfolder]: 1793/2334 cut-off events. [2021-08-13 12:52:10,685 INFO L130 PetriNetUnfolder]: For 2304/2304 co-relation queries the response was YES. [2021-08-13 12:52:10,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4666 conditions, 2334 events. 1793/2334 cut-off events. For 2304/2304 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8920 event pairs, 0 based on Foata normal form. 0/2333 useless extension candidates. Maximal degree in co-relation 2090. Up to 630 conditions per place. [2021-08-13 12:52:10,698 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 120 transitions, 528 flow [2021-08-13 12:52:10,723 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 109 transitions, 488 flow [2021-08-13 12:52:10,880 INFO L129 PetriNetUnfolder]: 1793/2331 cut-off events. [2021-08-13 12:52:10,880 INFO L130 PetriNetUnfolder]: For 2304/2304 co-relation queries the response was YES. [2021-08-13 12:52:10,880 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:10,881 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, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:10,881 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:10,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:10,888 INFO L82 PathProgramCache]: Analyzing trace with hash -921283741, now seen corresponding path program 1 times [2021-08-13 12:52:10,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:10,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763298260] [2021-08-13 12:52:10,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:11,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:11,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 12:52:11,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:11,038 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 12:52:11,038 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:11,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763298260] [2021-08-13 12:52:11,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763298260] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:11,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:11,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 12:52:11,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116913039] [2021-08-13 12:52:11,046 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 12:52:11,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:11,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 12:52:11,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 12:52:11,060 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2021-08-13 12:52:11,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 109 transitions, 488 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 12:52:11,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:11,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2021-08-13 12:52:11,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:11,176 INFO L129 PetriNetUnfolder]: 1001/1377 cut-off events. [2021-08-13 12:52:11,176 INFO L130 PetriNetUnfolder]: For 2025/2025 co-relation queries the response was YES. [2021-08-13 12:52:11,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2849 conditions, 1377 events. 1001/1377 cut-off events. For 2025/2025 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5747 event pairs, 0 based on Foata normal form. 163/1540 useless extension candidates. Maximal degree in co-relation 2075. Up to 280 conditions per place. [2021-08-13 12:52:11,187 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 4 selfloop transitions, 1 changer transitions 0/104 dead transitions. [2021-08-13 12:52:11,187 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 104 transitions, 473 flow [2021-08-13 12:52:11,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 12:52:11,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 12:52:11,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2021-08-13 12:52:11,199 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2021-08-13 12:52:11,200 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2021-08-13 12:52:11,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2021-08-13 12:52:11,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:11,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2021-08-13 12:52:11,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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 12:52:11,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 12:52:11,212 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 12:52:11,213 INFO L348 CegarLoopForPetriNet]: 65 programPoint places, 2 predicate places. [2021-08-13 12:52:11,213 INFO L482 AbstractCegarLoop]: Abstraction has has 67 places, 104 transitions, 473 flow [2021-08-13 12:52:11,213 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 12:52:11,213 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:11,213 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, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:11,214 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 12:52:11,214 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:11,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:11,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1919088689, now seen corresponding path program 1 times [2021-08-13 12:52:11,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:11,215 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744603376] [2021-08-13 12:52:11,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:11,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:11,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 12:52:11,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:11,259 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 12:52:11,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:11,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744603376] [2021-08-13 12:52:11,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744603376] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:11,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:11,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 12:52:11,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507840401] [2021-08-13 12:52:11,260 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 12:52:11,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:11,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 12:52:11,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 12:52:11,262 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2021-08-13 12:52:11,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 104 transitions, 473 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 12:52:11,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:11,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2021-08-13 12:52:11,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:11,358 INFO L129 PetriNetUnfolder]: 994/1369 cut-off events. [2021-08-13 12:52:11,358 INFO L130 PetriNetUnfolder]: For 1844/1844 co-relation queries the response was YES. [2021-08-13 12:52:11,362 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2991 conditions, 1369 events. 994/1369 cut-off events. For 1844/1844 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5772 event pairs, 0 based on Foata normal form. 1/1370 useless extension candidates. Maximal degree in co-relation 2186. Up to 280 conditions per place. [2021-08-13 12:52:11,371 INFO L132 encePairwiseOnDemand]: 118/120 looper letters, 8 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2021-08-13 12:52:11,372 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 103 transitions, 486 flow [2021-08-13 12:52:11,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 12:52:11,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 12:52:11,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2021-08-13 12:52:11,377 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2021-08-13 12:52:11,377 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2021-08-13 12:52:11,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2021-08-13 12:52:11,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:11,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2021-08-13 12:52:11,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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 12:52:11,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 12:52:11,381 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 12:52:11,381 INFO L348 CegarLoopForPetriNet]: 65 programPoint places, 4 predicate places. [2021-08-13 12:52:11,381 INFO L482 AbstractCegarLoop]: Abstraction has has 69 places, 103 transitions, 486 flow [2021-08-13 12:52:11,382 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 12:52:11,382 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:11,382 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, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:11,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 12:52:11,382 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:11,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:11,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1905061497, now seen corresponding path program 1 times [2021-08-13 12:52:11,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:11,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220552120] [2021-08-13 12:52:11,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:11,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:11,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 12:52:11,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:11,427 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 12:52:11,427 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:11,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220552120] [2021-08-13 12:52:11,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220552120] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:11,428 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:11,428 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 12:52:11,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110622151] [2021-08-13 12:52:11,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 12:52:11,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:11,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 12:52:11,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 12:52:11,430 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2021-08-13 12:52:11,431 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 103 transitions, 486 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 12:52:11,431 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:11,431 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2021-08-13 12:52:11,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:11,524 INFO L129 PetriNetUnfolder]: 946/1313 cut-off events. [2021-08-13 12:52:11,524 INFO L130 PetriNetUnfolder]: For 2091/2091 co-relation queries the response was YES. [2021-08-13 12:52:11,529 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3023 conditions, 1313 events. 946/1313 cut-off events. For 2091/2091 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5268 event pairs, 0 based on Foata normal form. 7/1320 useless extension candidates. Maximal degree in co-relation 2187. Up to 280 conditions per place. [2021-08-13 12:52:11,537 INFO L132 encePairwiseOnDemand]: 117/120 looper letters, 7 selfloop transitions, 1 changer transitions 0/101 dead transitions. [2021-08-13 12:52:11,537 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 101 transitions, 492 flow [2021-08-13 12:52:11,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 12:52:11,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 12:52:11,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2021-08-13 12:52:11,539 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2021-08-13 12:52:11,539 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2021-08-13 12:52:11,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2021-08-13 12:52:11,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:11,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2021-08-13 12:52:11,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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 12:52:11,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 12:52:11,541 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 12:52:11,541 INFO L348 CegarLoopForPetriNet]: 65 programPoint places, 6 predicate places. [2021-08-13 12:52:11,541 INFO L482 AbstractCegarLoop]: Abstraction has has 71 places, 101 transitions, 492 flow [2021-08-13 12:52:11,541 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 12:52:11,542 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:11,542 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, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:11,543 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 12:52:11,543 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:11,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:11,543 INFO L82 PathProgramCache]: Analyzing trace with hash 279625231, now seen corresponding path program 1 times [2021-08-13 12:52:11,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:11,544 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913966251] [2021-08-13 12:52:11,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:11,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:11,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 12:52:11,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:11,576 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 12:52:11,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:11,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913966251] [2021-08-13 12:52:11,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913966251] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:11,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:11,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 12:52:11,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020261752] [2021-08-13 12:52:11,577 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 12:52:11,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:11,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 12:52:11,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 12:52:11,579 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2021-08-13 12:52:11,579 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 101 transitions, 492 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 12:52:11,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:11,579 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2021-08-13 12:52:11,579 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:11,617 INFO L129 PetriNetUnfolder]: 329/506 cut-off events. [2021-08-13 12:52:11,618 INFO L130 PetriNetUnfolder]: For 1242/1242 co-relation queries the response was YES. [2021-08-13 12:52:11,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1178 conditions, 506 events. 329/506 cut-off events. For 1242/1242 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1946 event pairs, 0 based on Foata normal form. 148/654 useless extension candidates. Maximal degree in co-relation 1129. Up to 140 conditions per place. [2021-08-13 12:52:11,621 INFO L132 encePairwiseOnDemand]: 111/120 looper letters, 1 selfloop transitions, 1 changer transitions 0/85 dead transitions. [2021-08-13 12:52:11,621 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 85 transitions, 410 flow [2021-08-13 12:52:11,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 12:52:11,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 12:52:11,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2021-08-13 12:52:11,623 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2021-08-13 12:52:11,624 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2021-08-13 12:52:11,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2021-08-13 12:52:11,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:11,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2021-08-13 12:52:11,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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 12:52:11,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 12:52:11,626 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 12:52:11,626 INFO L348 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2021-08-13 12:52:11,626 INFO L482 AbstractCegarLoop]: Abstraction has has 73 places, 85 transitions, 410 flow [2021-08-13 12:52:11,626 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 12:52:11,626 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:11,626 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, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:11,627 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 12:52:11,627 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:11,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:11,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1370291771, now seen corresponding path program 1 times [2021-08-13 12:52:11,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:11,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123953688] [2021-08-13 12:52:11,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:11,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:11,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 12:52:11,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:11,661 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 12:52:11,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:11,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123953688] [2021-08-13 12:52:11,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123953688] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:11,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:11,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 12:52:11,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555673676] [2021-08-13 12:52:11,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 12:52:11,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:11,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 12:52:11,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 12:52:11,663 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2021-08-13 12:52:11,663 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 85 transitions, 410 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 12:52:11,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:11,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2021-08-13 12:52:11,664 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:11,693 INFO L129 PetriNetUnfolder]: 185/321 cut-off events. [2021-08-13 12:52:11,693 INFO L130 PetriNetUnfolder]: For 677/677 co-relation queries the response was YES. [2021-08-13 12:52:11,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 789 conditions, 321 events. 185/321 cut-off events. For 677/677 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1135 event pairs, 0 based on Foata normal form. 35/356 useless extension candidates. Maximal degree in co-relation 738. Up to 63 conditions per place. [2021-08-13 12:52:11,696 INFO L132 encePairwiseOnDemand]: 115/120 looper letters, 4 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2021-08-13 12:52:11,696 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 81 transitions, 400 flow [2021-08-13 12:52:11,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 12:52:11,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 12:52:11,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 339 transitions. [2021-08-13 12:52:11,697 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9416666666666667 [2021-08-13 12:52:11,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 339 transitions. [2021-08-13 12:52:11,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 339 transitions. [2021-08-13 12:52:11,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:11,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 339 transitions. [2021-08-13 12:52:11,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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 12:52:11,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 12:52:11,699 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 12:52:11,699 INFO L348 CegarLoopForPetriNet]: 65 programPoint places, 10 predicate places. [2021-08-13 12:52:11,699 INFO L482 AbstractCegarLoop]: Abstraction has has 75 places, 81 transitions, 400 flow [2021-08-13 12:52:11,699 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 12:52:11,699 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:11,699 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, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:11,699 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 12:52:11,699 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:11,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:11,700 INFO L82 PathProgramCache]: Analyzing trace with hash 2082203581, now seen corresponding path program 1 times [2021-08-13 12:52:11,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:11,700 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071068354] [2021-08-13 12:52:11,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:11,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:11,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 12:52:11,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:11,732 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 12:52:11,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:11,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071068354] [2021-08-13 12:52:11,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071068354] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:11,739 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:11,739 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 12:52:11,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177830256] [2021-08-13 12:52:11,740 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 12:52:11,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:11,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 12:52:11,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 12:52:11,743 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2021-08-13 12:52:11,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 81 transitions, 400 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 12:52:11,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:11,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2021-08-13 12:52:11,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:11,767 INFO L129 PetriNetUnfolder]: 140/261 cut-off events. [2021-08-13 12:52:11,767 INFO L130 PetriNetUnfolder]: For 561/561 co-relation queries the response was YES. [2021-08-13 12:52:11,768 INFO L84 FinitePrefix]: Finished finitePrefix Result has 680 conditions, 261 events. 140/261 cut-off events. For 561/561 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 936 event pairs, 0 based on Foata normal form. 10/271 useless extension candidates. Maximal degree in co-relation 627. Up to 63 conditions per place. [2021-08-13 12:52:11,769 INFO L132 encePairwiseOnDemand]: 116/120 looper letters, 5 selfloop transitions, 1 changer transitions 0/78 dead transitions. [2021-08-13 12:52:11,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 78 transitions, 397 flow [2021-08-13 12:52:11,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 12:52:11,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 12:52:11,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 339 transitions. [2021-08-13 12:52:11,770 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9416666666666667 [2021-08-13 12:52:11,770 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 339 transitions. [2021-08-13 12:52:11,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 339 transitions. [2021-08-13 12:52:11,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:11,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 339 transitions. [2021-08-13 12:52:11,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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 12:52:11,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 12:52:11,772 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 12:52:11,772 INFO L348 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2021-08-13 12:52:11,772 INFO L482 AbstractCegarLoop]: Abstraction has has 77 places, 78 transitions, 397 flow [2021-08-13 12:52:11,773 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 12:52:11,773 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:11,773 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, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:11,773 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 12:52:11,773 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:11,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:11,773 INFO L82 PathProgramCache]: Analyzing trace with hash 884852857, now seen corresponding path program 1 times [2021-08-13 12:52:11,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:11,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367720225] [2021-08-13 12:52:11,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:11,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:11,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 12:52:11,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:11,804 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 12:52:11,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:11,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367720225] [2021-08-13 12:52:11,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367720225] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:11,804 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:11,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 12:52:11,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816555518] [2021-08-13 12:52:11,805 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 12:52:11,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:11,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 12:52:11,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 12:52:11,806 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2021-08-13 12:52:11,806 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 78 transitions, 397 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 12:52:11,807 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:11,807 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2021-08-13 12:52:11,807 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:11,825 INFO L129 PetriNetUnfolder]: 21/79 cut-off events. [2021-08-13 12:52:11,825 INFO L130 PetriNetUnfolder]: For 216/216 co-relation queries the response was YES. [2021-08-13 12:52:11,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 79 events. 21/79 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 175 event pairs, 0 based on Foata normal form. 28/107 useless extension candidates. Maximal degree in co-relation 155. Up to 12 conditions per place. [2021-08-13 12:52:11,826 INFO L132 encePairwiseOnDemand]: 112/120 looper letters, 1 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2021-08-13 12:52:11,826 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 64 transitions, 321 flow [2021-08-13 12:52:11,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 12:52:11,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 12:52:11,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 339 transitions. [2021-08-13 12:52:11,828 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9416666666666667 [2021-08-13 12:52:11,828 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 339 transitions. [2021-08-13 12:52:11,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 339 transitions. [2021-08-13 12:52:11,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:11,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 339 transitions. [2021-08-13 12:52:11,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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 12:52:11,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 12:52:11,830 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 12:52:11,830 INFO L348 CegarLoopForPetriNet]: 65 programPoint places, 14 predicate places. [2021-08-13 12:52:11,830 INFO L482 AbstractCegarLoop]: Abstraction has has 79 places, 64 transitions, 321 flow [2021-08-13 12:52:11,830 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 12:52:11,830 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:11,830 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, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:11,830 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 12:52:11,830 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:11,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:11,831 INFO L82 PathProgramCache]: Analyzing trace with hash 458066203, now seen corresponding path program 1 times [2021-08-13 12:52:11,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:11,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268845683] [2021-08-13 12:52:11,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:11,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:11,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 12:52:11,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:11,854 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 12:52:11,854 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:11,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268845683] [2021-08-13 12:52:11,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268845683] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:11,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:11,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 12:52:11,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441685964] [2021-08-13 12:52:11,855 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 12:52:11,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:11,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 12:52:11,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 12:52:11,856 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2021-08-13 12:52:11,856 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 64 transitions, 321 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 12:52:11,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:11,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2021-08-13 12:52:11,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:11,864 INFO L129 PetriNetUnfolder]: 0/37 cut-off events. [2021-08-13 12:52:11,864 INFO L130 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2021-08-13 12:52:11,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 37 events. 0/37 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 0 based on Foata normal form. 6/43 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-08-13 12:52:11,865 INFO L132 encePairwiseOnDemand]: 113/120 looper letters, 1 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2021-08-13 12:52:11,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 37 transitions, 160 flow [2021-08-13 12:52:11,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 12:52:11,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 12:52:11,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 338 transitions. [2021-08-13 12:52:11,866 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9388888888888889 [2021-08-13 12:52:11,866 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 338 transitions. [2021-08-13 12:52:11,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 338 transitions. [2021-08-13 12:52:11,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:11,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 338 transitions. [2021-08-13 12:52:11,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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 12:52:11,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 12:52:11,867 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 12:52:11,867 INFO L348 CegarLoopForPetriNet]: 65 programPoint places, 16 predicate places. [2021-08-13 12:52:11,868 INFO L482 AbstractCegarLoop]: Abstraction has has 81 places, 37 transitions, 160 flow [2021-08-13 12:52:11,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 12:52:11,868 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:11,868 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, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:11,868 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 12:52:11,868 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:11,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:11,868 INFO L82 PathProgramCache]: Analyzing trace with hash 575177853, now seen corresponding path program 1 times [2021-08-13 12:52:11,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:11,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102992004] [2021-08-13 12:52:11,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:11,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:11,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:11,957 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:52:11,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:52:11,967 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:52:11,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:52:11,993 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 12:52:11,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 12:52:12,035 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-08-13 12:52:12,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-08-13 12:52:12,074 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-08-13 12:52:12,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 12:52:12,120 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-08-13 12:52:12,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-08-13 12:52:12,155 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-08-13 12:52:12,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-08-13 12:52:12,197 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-08-13 12:52:12,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-08-13 12:52:12,233 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 12:52:12,233 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:12,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102992004] [2021-08-13 12:52:12,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102992004] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:12,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:12,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-13 12:52:12,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752286451] [2021-08-13 12:52:12,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-08-13 12:52:12,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:12,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-13 12:52:12,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-08-13 12:52:12,236 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-08-13 12:52:12,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 37 transitions, 160 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 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 12:52:12,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:12,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-08-13 12:52:12,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:12,614 INFO L129 PetriNetUnfolder]: 2307/3992 cut-off events. [2021-08-13 12:52:12,614 INFO L130 PetriNetUnfolder]: For 381/381 co-relation queries the response was YES. [2021-08-13 12:52:12,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7374 conditions, 3992 events. 2307/3992 cut-off events. For 381/381 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 26972 event pairs, 769 based on Foata normal form. 1/3852 useless extension candidates. Maximal degree in co-relation 7277. Up to 1153 conditions per place. [2021-08-13 12:52:12,639 INFO L132 encePairwiseOnDemand]: 110/120 looper letters, 44 selfloop transitions, 8 changer transitions 1/80 dead transitions. [2021-08-13 12:52:12,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 80 transitions, 352 flow [2021-08-13 12:52:12,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 12:52:12,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 12:52:12,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-08-13 12:52:12,642 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9492424242424242 [2021-08-13 12:52:12,642 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-08-13 12:52:12,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-08-13 12:52:12,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:12,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-08-13 12:52:12,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 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 12:52:12,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 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 12:52:12,646 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 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 12:52:12,646 INFO L348 CegarLoopForPetriNet]: 65 programPoint places, 26 predicate places. [2021-08-13 12:52:12,647 INFO L482 AbstractCegarLoop]: Abstraction has has 91 places, 80 transitions, 352 flow [2021-08-13 12:52:12,647 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 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 12:52:12,647 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:12,647 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, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:12,647 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 12:52:12,647 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:12,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:12,648 INFO L82 PathProgramCache]: Analyzing trace with hash 621845817, now seen corresponding path program 2 times [2021-08-13 12:52:12,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:12,648 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715501111] [2021-08-13 12:52:12,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:12,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:12,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:12,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:12,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:12,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:12,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:12,702 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:52:12,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:52:12,712 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:12,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:12,727 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:52:12,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:52:12,746 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 12:52:12,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 12:52:12,770 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-08-13 12:52:12,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-08-13 12:52:12,834 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-08-13 12:52:12,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-08-13 12:52:12,894 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-08-13 12:52:12,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-08-13 12:52:12,932 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 12:52:12,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:12,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715501111] [2021-08-13 12:52:12,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715501111] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:12,933 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:12,933 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-13 12:52:12,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310430552] [2021-08-13 12:52:12,934 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-08-13 12:52:12,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:12,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-13 12:52:12,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-08-13 12:52:12,937 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-08-13 12:52:12,938 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 80 transitions, 352 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 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 12:52:12,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:12,938 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-08-13 12:52:12,938 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:13,521 INFO L129 PetriNetUnfolder]: 3107/6558 cut-off events. [2021-08-13 12:52:13,521 INFO L130 PetriNetUnfolder]: For 2539/7275 co-relation queries the response was YES. [2021-08-13 12:52:13,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17015 conditions, 6558 events. 3107/6558 cut-off events. For 2539/7275 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 57014 event pairs, 321 based on Foata normal form. 1/6417 useless extension candidates. Maximal degree in co-relation 16768. Up to 1789 conditions per place. [2021-08-13 12:52:13,575 INFO L132 encePairwiseOnDemand]: 110/120 looper letters, 154 selfloop transitions, 32 changer transitions 3/216 dead transitions. [2021-08-13 12:52:13,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 216 transitions, 1274 flow [2021-08-13 12:52:13,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 12:52:13,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 12:52:13,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-08-13 12:52:13,578 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9492424242424242 [2021-08-13 12:52:13,578 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-08-13 12:52:13,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-08-13 12:52:13,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:13,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-08-13 12:52:13,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 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 12:52:13,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 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 12:52:13,582 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 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 12:52:13,583 INFO L348 CegarLoopForPetriNet]: 65 programPoint places, 36 predicate places. [2021-08-13 12:52:13,583 INFO L482 AbstractCegarLoop]: Abstraction has has 101 places, 216 transitions, 1274 flow [2021-08-13 12:52:13,583 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 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 12:52:13,583 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:13,583 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, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:13,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 12:52:13,583 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:13,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:13,584 INFO L82 PathProgramCache]: Analyzing trace with hash 487729399, now seen corresponding path program 3 times [2021-08-13 12:52:13,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:13,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877346332] [2021-08-13 12:52:13,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:13,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:13,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:13,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:13,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:13,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:13,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:13,685 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:52:13,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:52:13,697 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:13,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:13,710 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:52:13,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:52:13,728 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 12:52:13,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 12:52:13,751 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-08-13 12:52:13,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-08-13 12:52:13,787 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-08-13 12:52:13,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-08-13 12:52:13,822 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-08-13 12:52:13,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-08-13 12:52:13,854 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 12:52:13,854 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:13,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877346332] [2021-08-13 12:52:13,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877346332] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:13,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:13,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-13 12:52:13,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976501182] [2021-08-13 12:52:13,855 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-08-13 12:52:13,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:13,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-13 12:52:13,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-08-13 12:52:13,856 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-08-13 12:52:13,857 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 216 transitions, 1274 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 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 12:52:13,857 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:13,857 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-08-13 12:52:13,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:14,743 INFO L129 PetriNetUnfolder]: 3986/9385 cut-off events. [2021-08-13 12:52:14,743 INFO L130 PetriNetUnfolder]: For 4958/14334 co-relation queries the response was YES. [2021-08-13 12:52:14,784 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30162 conditions, 9385 events. 3986/9385 cut-off events. For 4958/14334 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 94675 event pairs, 129 based on Foata normal form. 1/9205 useless extension candidates. Maximal degree in co-relation 29544. Up to 2462 conditions per place. [2021-08-13 12:52:14,837 INFO L132 encePairwiseOnDemand]: 110/120 looper letters, 444 selfloop transitions, 99 changer transitions 6/576 dead transitions. [2021-08-13 12:52:14,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 576 transitions, 4532 flow [2021-08-13 12:52:14,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 12:52:14,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 12:52:14,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-08-13 12:52:14,840 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9492424242424242 [2021-08-13 12:52:14,840 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-08-13 12:52:14,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-08-13 12:52:14,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:14,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-08-13 12:52:14,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 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 12:52:14,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 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 12:52:14,845 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 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 12:52:14,845 INFO L348 CegarLoopForPetriNet]: 65 programPoint places, 46 predicate places. [2021-08-13 12:52:14,845 INFO L482 AbstractCegarLoop]: Abstraction has has 111 places, 576 transitions, 4532 flow [2021-08-13 12:52:14,845 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 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 12:52:14,845 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:14,845 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, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:14,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 12:52:14,846 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:14,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:14,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1609061443, now seen corresponding path program 4 times [2021-08-13 12:52:14,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:14,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492224077] [2021-08-13 12:52:14,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:14,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:14,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:14,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:14,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:14,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:14,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:14,915 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:52:14,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:52:14,925 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:14,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:14,942 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:52:14,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:52:14,961 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 12:52:14,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 12:52:14,985 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-08-13 12:52:14,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-08-13 12:52:15,077 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-08-13 12:52:15,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-08-13 12:52:15,113 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-08-13 12:52:15,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-08-13 12:52:15,144 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 12:52:15,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:15,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492224077] [2021-08-13 12:52:15,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492224077] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:15,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:15,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-13 12:52:15,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741920301] [2021-08-13 12:52:15,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-08-13 12:52:15,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:15,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-13 12:52:15,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-08-13 12:52:15,146 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-08-13 12:52:15,146 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 576 transitions, 4532 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 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 12:52:15,147 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:15,147 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-08-13 12:52:15,147 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:16,778 INFO L129 PetriNetUnfolder]: 5158/13312 cut-off events. [2021-08-13 12:52:16,778 INFO L130 PetriNetUnfolder]: For 8620/24520 co-relation queries the response was YES. [2021-08-13 12:52:16,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50379 conditions, 13312 events. 5158/13312 cut-off events. For 8620/24520 co-relation queries the response was YES. Maximal size of possible extension queue 1356. Compared 151470 event pairs, 49 based on Foata normal form. 3/13068 useless extension candidates. Maximal degree in co-relation 48974. Up to 3418 conditions per place. [2021-08-13 12:52:16,896 INFO L132 encePairwiseOnDemand]: 110/120 looper letters, 1113 selfloop transitions, 289 changer transitions 8/1437 dead transitions. [2021-08-13 12:52:16,896 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 1437 transitions, 14240 flow [2021-08-13 12:52:16,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 12:52:16,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 12:52:16,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-08-13 12:52:16,898 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9492424242424242 [2021-08-13 12:52:16,898 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-08-13 12:52:16,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-08-13 12:52:16,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:16,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-08-13 12:52:16,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 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 12:52:16,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 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 12:52:16,902 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 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 12:52:16,902 INFO L348 CegarLoopForPetriNet]: 65 programPoint places, 56 predicate places. [2021-08-13 12:52:16,903 INFO L482 AbstractCegarLoop]: Abstraction has has 121 places, 1437 transitions, 14240 flow [2021-08-13 12:52:16,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 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 12:52:16,903 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:16,903 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, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:16,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-13 12:52:16,903 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:16,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:16,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1785429239, now seen corresponding path program 5 times [2021-08-13 12:52:16,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:16,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940422805] [2021-08-13 12:52:16,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:16,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:16,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:16,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:16,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:16,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:16,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:16,942 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:52:16,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:52:16,952 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:16,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:16,966 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:52:16,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:52:16,984 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 12:52:16,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 12:52:17,009 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-08-13 12:52:17,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-08-13 12:52:17,040 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-08-13 12:52:17,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-08-13 12:52:17,080 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-08-13 12:52:17,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-08-13 12:52:17,114 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 12:52:17,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:17,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940422805] [2021-08-13 12:52:17,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940422805] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:17,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:17,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-13 12:52:17,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223675189] [2021-08-13 12:52:17,115 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-08-13 12:52:17,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:17,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-13 12:52:17,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-08-13 12:52:17,116 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-08-13 12:52:17,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 1437 transitions, 14240 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 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 12:52:17,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:17,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-08-13 12:52:17,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:20,819 INFO L129 PetriNetUnfolder]: 6712/18837 cut-off events. [2021-08-13 12:52:20,819 INFO L130 PetriNetUnfolder]: For 15396/49044 co-relation queries the response was YES. [2021-08-13 12:52:20,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81227 conditions, 18837 events. 6712/18837 cut-off events. For 15396/49044 co-relation queries the response was YES. Maximal size of possible extension queue 2083. Compared 238692 event pairs, 17 based on Foata normal form. 23/18537 useless extension candidates. Maximal degree in co-relation 78751. Up to 4640 conditions per place. [2021-08-13 12:52:20,980 INFO L132 encePairwiseOnDemand]: 110/120 looper letters, 2480 selfloop transitions, 576 changer transitions 10/3093 dead transitions. [2021-08-13 12:52:20,980 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 3093 transitions, 36932 flow [2021-08-13 12:52:20,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 12:52:20,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 12:52:20,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-08-13 12:52:20,983 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9492424242424242 [2021-08-13 12:52:20,983 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-08-13 12:52:20,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-08-13 12:52:20,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:20,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-08-13 12:52:20,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 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 12:52:20,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 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 12:52:20,987 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 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 12:52:20,987 INFO L348 CegarLoopForPetriNet]: 65 programPoint places, 66 predicate places. [2021-08-13 12:52:20,987 INFO L482 AbstractCegarLoop]: Abstraction has has 131 places, 3093 transitions, 36932 flow [2021-08-13 12:52:20,988 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 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 12:52:20,988 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:20,988 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, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:20,988 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-13 12:52:20,988 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:20,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:20,988 INFO L82 PathProgramCache]: Analyzing trace with hash 2078575807, now seen corresponding path program 6 times [2021-08-13 12:52:20,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:20,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814228955] [2021-08-13 12:52:20,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:21,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:21,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:21,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:21,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:21,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:21,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:21,203 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:52:21,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:52:21,219 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:52:21,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:52:21,243 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:52:21,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:52:21,288 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 12:52:21,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 12:52:21,313 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-08-13 12:52:21,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-08-13 12:52:21,348 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-08-13 12:52:21,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-08-13 12:52:21,398 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-08-13 12:52:21,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-08-13 12:52:21,458 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 12:52:21,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:21,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814228955] [2021-08-13 12:52:21,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814228955] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:21,459 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:21,459 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-13 12:52:21,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100396395] [2021-08-13 12:52:21,459 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-08-13 12:52:21,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:21,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-13 12:52:21,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-08-13 12:52:21,461 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-08-13 12:52:21,461 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 3093 transitions, 36932 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 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 12:52:21,462 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:21,462 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-08-13 12:52:21,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:36,749 INFO L129 PetriNetUnfolder]: 8793/27358 cut-off events. [2021-08-13 12:52:36,749 INFO L130 PetriNetUnfolder]: For 29315/149922 co-relation queries the response was YES. [2021-08-13 12:52:36,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 130275 conditions, 27358 events. 8793/27358 cut-off events. For 29315/149922 co-relation queries the response was YES. Maximal size of possible extension queue 2968. Compared 385935 event pairs, 5 based on Foata normal form. 170/26881 useless extension candidates. Maximal degree in co-relation 125878. Up to 6519 conditions per place. [2021-08-13 12:52:36,989 INFO L132 encePairwiseOnDemand]: 110/120 looper letters, 5479 selfloop transitions, 1280 changer transitions 12/6798 dead transitions. [2021-08-13 12:52:36,989 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 6798 transitions, 94934 flow [2021-08-13 12:52:36,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 12:52:36,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 12:52:36,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-08-13 12:52:36,991 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9492424242424242 [2021-08-13 12:52:36,991 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-08-13 12:52:36,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-08-13 12:52:36,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:36,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-08-13 12:52:36,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 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 12:52:36,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 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 12:52:36,996 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 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 12:52:36,996 INFO L348 CegarLoopForPetriNet]: 65 programPoint places, 76 predicate places. [2021-08-13 12:52:36,996 INFO L482 AbstractCegarLoop]: Abstraction has has 141 places, 6798 transitions, 94934 flow [2021-08-13 12:52:36,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 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 12:52:36,997 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:36,997 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, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:36,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-13 12:52:36,997 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:36,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:36,997 INFO L82 PathProgramCache]: Analyzing trace with hash 421553101, now seen corresponding path program 7 times [2021-08-13 12:52:36,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:36,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412518009] [2021-08-13 12:52:36,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:37,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:37,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:37,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:37,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:37,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:37,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:37,052 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:52:37,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:52:37,061 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:52:37,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:52:37,075 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:52:37,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:52:37,094 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 12:52:37,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 12:52:37,121 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-08-13 12:52:37,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-08-13 12:52:37,164 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-08-13 12:52:37,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-08-13 12:52:37,197 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-08-13 12:52:37,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-08-13 12:52:37,226 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 12:52:37,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:37,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412518009] [2021-08-13 12:52:37,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412518009] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:37,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:37,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-13 12:52:37,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834000959] [2021-08-13 12:52:37,227 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-08-13 12:52:37,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:37,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-13 12:52:37,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-08-13 12:52:37,228 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-08-13 12:52:37,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 6798 transitions, 94934 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 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 12:52:37,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:37,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-08-13 12:52:37,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:54:08,368 INFO L129 PetriNetUnfolder]: 11498/38211 cut-off events. [2021-08-13 12:54:08,368 INFO L130 PetriNetUnfolder]: For 51774/548140 co-relation queries the response was YES. [2021-08-13 12:54:08,678 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200174 conditions, 38211 events. 11498/38211 cut-off events. For 51774/548140 co-relation queries the response was YES. Maximal size of possible extension queue 4443. Compared 585137 event pairs, 1 based on Foata normal form. 604/37940 useless extension candidates. Maximal degree in co-relation 192591. Up to 9470 conditions per place. [2021-08-13 12:54:08,985 INFO L132 encePairwiseOnDemand]: 110/120 looper letters, 11611 selfloop transitions, 2541 changer transitions 14/14193 dead transitions. [2021-08-13 12:54:08,985 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 14193 transitions, 226796 flow [2021-08-13 12:54:08,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 12:54:08,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 12:54:08,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-08-13 12:54:08,987 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9492424242424242 [2021-08-13 12:54:08,987 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-08-13 12:54:08,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-08-13 12:54:08,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:54:08,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-08-13 12:54:08,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 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 12:54:08,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 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 12:54:08,992 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 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 12:54:08,993 INFO L348 CegarLoopForPetriNet]: 65 programPoint places, 86 predicate places. [2021-08-13 12:54:08,993 INFO L482 AbstractCegarLoop]: Abstraction has has 151 places, 14193 transitions, 226796 flow [2021-08-13 12:54:09,002 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 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 12:54:09,002 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:54:09,002 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, 1, 1, 1, 1, 1, 1] [2021-08-13 12:54:09,002 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-13 12:54:09,002 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:54:09,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:54:09,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1802316839, now seen corresponding path program 8 times [2021-08-13 12:54:09,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:54:09,003 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239383308] [2021-08-13 12:54:09,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:54:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:54:09,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:09,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:54:09,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:09,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:54:09,029 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:54:09,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:54:09,035 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:54:09,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:54:09,045 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:54:09,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:54:09,057 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:54:09,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:54:09,076 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 12:54:09,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 12:54:09,101 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-08-13 12:54:09,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-08-13 12:54:09,132 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-08-13 12:54:09,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-08-13 12:54:09,172 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-08-13 12:54:09,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-08-13 12:54:09,208 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 12:54:09,208 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:54:09,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239383308] [2021-08-13 12:54:09,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239383308] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:54:09,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:54:09,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-13 12:54:09,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505650249] [2021-08-13 12:54:09,211 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-08-13 12:54:09,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:54:09,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-13 12:54:09,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-08-13 12:54:09,214 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-08-13 12:54:09,215 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 14193 transitions, 226796 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 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 12:54:09,215 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:54:09,215 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-08-13 12:54:09,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2021-08-13 13:01:40,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 13:01:40,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-13 13:01:40,527 WARN L547 AbstractCegarLoop]: Verification canceled [2021-08-13 13:01:40,529 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-13 13:01:40,531 WARN L188 ceAbstractionStarter]: Timeout [2021-08-13 13:01:40,531 INFO L202 PluginConnector]: Adding new model example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.08 01:01:40 BasicIcfg [2021-08-13 13:01:40,531 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-13 13:01:40,531 INFO L168 Benchmark]: Toolchain (without parser) took 570552.67 ms. Allocated memory was 202.4 MB in the beginning and 4.5 GB in the end (delta: 4.3 GB). Free memory was 182.9 MB in the beginning and 2.8 GB in the end (delta: -2.6 GB). Peak memory consumption was 4.0 GB. Max. memory is 8.0 GB. [2021-08-13 13:01:40,531 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 202.4 MB. Free memory is still 183.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-13 13:01:40,532 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.09 ms. Allocated memory is still 202.4 MB. Free memory was 182.9 MB in the beginning and 181.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-13 13:01:40,532 INFO L168 Benchmark]: Boogie Preprocessor took 11.67 ms. Allocated memory is still 202.4 MB. Free memory was 181.3 MB in the beginning and 180.3 MB in the end (delta: 968.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-13 13:01:40,532 INFO L168 Benchmark]: RCFGBuilder took 189.35 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 168.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-08-13 13:01:40,532 INFO L168 Benchmark]: TraceAbstraction took 570323.37 ms. Allocated memory was 202.4 MB in the beginning and 4.5 GB in the end (delta: 4.3 GB). Free memory was 167.6 MB in the beginning and 2.8 GB in the end (delta: -2.6 GB). Peak memory consumption was 4.0 GB. Max. memory is 8.0 GB. [2021-08-13 13:01:40,532 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 202.4 MB. Free memory is still 183.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 24.09 ms. Allocated memory is still 202.4 MB. Free memory was 182.9 MB in the beginning and 181.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 11.67 ms. Allocated memory is still 202.4 MB. Free memory was 181.3 MB in the beginning and 180.3 MB in the end (delta: 968.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 189.35 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 168.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 570323.37 ms. Allocated memory was 202.4 MB in the beginning and 4.5 GB in the end (delta: 4.3 GB). Free memory was 167.6 MB in the beginning and 2.8 GB in the end (delta: -2.6 GB). Peak memory consumption was 4.0 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 31]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (11states, 109/120 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 193476 conditions, 28634 events (12033/28633 cut-off events. For 53868/3610386 co-relation queries the response was YES. Maximal size of possible extension queue 4616. Compared 396400 event pairs, 0 based on Foata normal form. 3737/34504 useless extension candidates. Maximal degree in co-relation 193435. Up to 9566 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 19 procedures, 85 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 156.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 570119.9ms, OverallIterations: 16, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 566840.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 312.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 367 SDtfs, 376 SDslu, 328 SDs, 0 SdLazy, 649 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 493.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1932.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=226796occurred in iteration=15, InterpolantAutomatonStates: 101, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 32.1ms SsaConstructionTime, 83.6ms SatisfiabilityAnalysisTime, 2511.6ms InterpolantComputationTime, 592 NumberOfCodeBlocks, 592 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 576 ConstructedInterpolants, 0 QuantifiedInterpolants, 12310 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown