/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/sum_invariant.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 12:45:55,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 12:45:55,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 12:45:55,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 12:45:55,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 12:45:55,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 12:45:55,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 12:45:55,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 12:45:55,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 12:45:55,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 12:45:55,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 12:45:55,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 12:45:55,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 12:45:55,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 12:45:55,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 12:45:55,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 12:45:55,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 12:45:55,233 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 12:45:55,269 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 12:45:55,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 12:45:55,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 12:45:55,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 12:45:55,274 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 12:45:55,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 12:45:55,274 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 12:45:55,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 12:45:55,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 12:45:55,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 12:45:55,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 12:45:55,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 12:45:55,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 12:45:55,276 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 12:45:55,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 12:45:55,276 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 12:45:55,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 12:45:55,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 12:45:55,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 12:45:55,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 12:45:55,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 12:45:55,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 12:45:55,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 12:45:55,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 12:45:55,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 12:45:55,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 12:45:55,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 12:45:55,278 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 12:45:55,279 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 12:45:55,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 12:45:55,279 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 12:45:55,279 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 12:45:55,279 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 12:45:55,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 12:45:55,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 12:45:55,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 12:45:55,635 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 12:45:55,636 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 12:45:55,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/sum_invariant.bpl [2021-08-13 12:45:55,637 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/sum_invariant.bpl' [2021-08-13 12:45:55,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 12:45:55,661 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 12:45:55,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 12:45:55,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 12:45:55,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 12:45:55,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:45:55" (1/1) ... [2021-08-13 12:45:55,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:45:55" (1/1) ... [2021-08-13 12:45:55,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 12:45:55,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 12:45:55,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 12:45:55,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 12:45:55,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:45:55" (1/1) ... [2021-08-13 12:45:55,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:45:55" (1/1) ... [2021-08-13 12:45:55,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:45:55" (1/1) ... [2021-08-13 12:45:55,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:45:55" (1/1) ... [2021-08-13 12:45:55,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:45:55" (1/1) ... [2021-08-13 12:45:55,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:45:55" (1/1) ... [2021-08-13 12:45:55,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:45:55" (1/1) ... [2021-08-13 12:45:55,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 12:45:55,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 12:45:55,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 12:45:55,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 12:45:55,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:45:55" (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 12:45:55,784 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 12:45:55,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 12:45:55,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 12:45:55,784 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-08-13 12:45:55,785 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-08-13 12:45:55,785 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-08-13 12:45:55,786 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 12:45:55,931 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 12:45:55,931 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 12:45:55,933 INFO L202 PluginConnector]: Adding new model sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 12:45:55 BoogieIcfgContainer [2021-08-13 12:45:55,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 12:45:55,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 12:45:55,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 12:45:55,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 12:45:55,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:45:55" (1/2) ... [2021-08-13 12:45:55,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@673dbcf7 and model type sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 12:45:55, skipping insertion in model container [2021-08-13 12:45:55,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 12:45:55" (2/2) ... [2021-08-13 12:45:55,941 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_invariant.bpl [2021-08-13 12:45:55,950 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 12:45:55,951 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 12:45:55,952 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 12:45:55,985 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:55,986 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:55,987 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:55,987 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:55,988 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:55,989 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:55,991 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:55,991 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:55,992 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:55,992 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:55,993 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:55,993 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:55,995 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:55,996 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:55,997 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:55,997 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:55,997 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:55,998 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:55,999 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:55,999 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:55,999 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:55,999 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:56,000 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:56,000 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:56,003 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:56,009 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:56,011 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:56,012 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:45:56,029 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-08-13 12:45:56,048 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-13 12:45:56,066 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 12:45:56,066 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 12:45:56,066 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 12:45:56,066 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 12:45:56,066 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 12:45:56,067 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 12:45:56,067 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 12:45:56,067 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 12:45:56,077 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 44 transitions, 156 flow [2021-08-13 12:45:56,109 INFO L129 PetriNetUnfolder]: 17/56 cut-off events. [2021-08-13 12:45:56,109 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-08-13 12:45:56,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 56 events. 17/56 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 140 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 49. Up to 12 conditions per place. [2021-08-13 12:45:56,113 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 44 transitions, 156 flow [2021-08-13 12:45:56,117 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 136 flow [2021-08-13 12:45:56,143 INFO L129 PetriNetUnfolder]: 17/53 cut-off events. [2021-08-13 12:45:56,143 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-08-13 12:45:56,143 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:45:56,144 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] [2021-08-13 12:45:56,144 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:45:56,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:45:56,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1761666906, now seen corresponding path program 1 times [2021-08-13 12:45:56,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:45:56,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974025447] [2021-08-13 12:45:56,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:45:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:45:56,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:56,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:45:56,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:56,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 12:45:56,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:56,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:45:56,333 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 12:45:56,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:45:56,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974025447] [2021-08-13 12:45:56,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974025447] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:45:56,335 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:45:56,335 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 12:45:56,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303232247] [2021-08-13 12:45:56,342 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 12:45:56,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:45:56,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 12:45:56,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 12:45:56,355 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 44 [2021-08-13 12:45:56,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 12:45:56,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:45:56,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 44 [2021-08-13 12:45:56,360 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:45:56,397 INFO L129 PetriNetUnfolder]: 5/35 cut-off events. [2021-08-13 12:45:56,397 INFO L130 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2021-08-13 12:45:56,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 35 events. 5/35 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 7/42 useless extension candidates. Maximal degree in co-relation 40. Up to 6 conditions per place. [2021-08-13 12:45:56,399 INFO L132 encePairwiseOnDemand]: 40/44 looper letters, 1 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2021-08-13 12:45:56,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 110 flow [2021-08-13 12:45:56,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 12:45:56,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 12:45:56,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2021-08-13 12:45:56,419 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9242424242424242 [2021-08-13 12:45:56,420 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2021-08-13 12:45:56,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2021-08-13 12:45:56,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:45:56,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2021-08-13 12:45:56,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 12:45:56,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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 12:45:56,431 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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 12:45:56,432 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2021-08-13 12:45:56,432 INFO L482 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 110 flow [2021-08-13 12:45:56,432 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 12:45:56,432 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:45:56,433 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] [2021-08-13 12:45:56,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 12:45:56,434 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:45:56,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:45:56,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1414257378, now seen corresponding path program 1 times [2021-08-13 12:45:56,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:45:56,436 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694306835] [2021-08-13 12:45:56,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:45:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:45:56,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:56,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:56,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:56,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:56,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:56,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:56,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:56,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:56,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:56,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:56,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:56,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:56,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:56,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:56,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:56,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:56,639 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:45:56,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:45:56,645 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 12:45:56,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:45:56,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694306835] [2021-08-13 12:45:56,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694306835] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:45:56,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:45:56,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:45:56,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222638454] [2021-08-13 12:45:56,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:45:56,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:45:56,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:45:56,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:45:56,664 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:45:56,665 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 110 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 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 12:45:56,665 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:45:56,665 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:45:56,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:45:57,088 INFO L129 PetriNetUnfolder]: 908/1702 cut-off events. [2021-08-13 12:45:57,089 INFO L130 PetriNetUnfolder]: For 449/449 co-relation queries the response was YES. [2021-08-13 12:45:57,097 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3529 conditions, 1702 events. 908/1702 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 10338 event pairs, 246 based on Foata normal form. 1/1699 useless extension candidates. Maximal degree in co-relation 3344. Up to 710 conditions per place. [2021-08-13 12:45:57,110 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 41 selfloop transitions, 21 changer transitions 0/76 dead transitions. [2021-08-13 12:45:57,110 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 76 transitions, 354 flow [2021-08-13 12:45:57,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:45:57,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:45:57,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 238 transitions. [2021-08-13 12:45:57,117 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2021-08-13 12:45:57,117 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 238 transitions. [2021-08-13 12:45:57,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 238 transitions. [2021-08-13 12:45:57,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:45:57,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 238 transitions. [2021-08-13 12:45:57,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.0) internal successors, (238), 7 states have internal predecessors, (238), 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 12:45:57,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 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 12:45:57,124 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 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 12:45:57,125 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 8 predicate places. [2021-08-13 12:45:57,125 INFO L482 AbstractCegarLoop]: Abstraction has has 47 places, 76 transitions, 354 flow [2021-08-13 12:45:57,126 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 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 12:45:57,126 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:45:57,126 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] [2021-08-13 12:45:57,126 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 12:45:57,126 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:45:57,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:45:57,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1088069582, now seen corresponding path program 1 times [2021-08-13 12:45:57,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:45:57,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029710964] [2021-08-13 12:45:57,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:45:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:45:57,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:57,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:45:57,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:57,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 12:45:57,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:57,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:45:57,174 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 12:45:57,174 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:45:57,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029710964] [2021-08-13 12:45:57,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029710964] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:45:57,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:45:57,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 12:45:57,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451766224] [2021-08-13 12:45:57,175 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 12:45:57,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:45:57,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 12:45:57,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 12:45:57,177 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 44 [2021-08-13 12:45:57,177 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 76 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 12:45:57,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:45:57,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 44 [2021-08-13 12:45:57,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:45:57,305 INFO L129 PetriNetUnfolder]: 872/1602 cut-off events. [2021-08-13 12:45:57,305 INFO L130 PetriNetUnfolder]: For 592/592 co-relation queries the response was YES. [2021-08-13 12:45:57,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3347 conditions, 1602 events. 872/1602 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 9344 event pairs, 246 based on Foata normal form. 64/1666 useless extension candidates. Maximal degree in co-relation 3233. Up to 710 conditions per place. [2021-08-13 12:45:57,318 INFO L132 encePairwiseOnDemand]: 41/44 looper letters, 1 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2021-08-13 12:45:57,318 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 72 transitions, 344 flow [2021-08-13 12:45:57,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 12:45:57,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 12:45:57,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2021-08-13 12:45:57,320 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2021-08-13 12:45:57,320 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 121 transitions. [2021-08-13 12:45:57,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 121 transitions. [2021-08-13 12:45:57,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:45:57,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 121 transitions. [2021-08-13 12:45:57,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 12:45:57,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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 12:45:57,321 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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 12:45:57,321 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 10 predicate places. [2021-08-13 12:45:57,322 INFO L482 AbstractCegarLoop]: Abstraction has has 49 places, 72 transitions, 344 flow [2021-08-13 12:45:57,322 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 12:45:57,322 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:45:57,322 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] [2021-08-13 12:45:57,322 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 12:45:57,322 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:45:57,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:45:57,323 INFO L82 PathProgramCache]: Analyzing trace with hash 263185920, now seen corresponding path program 2 times [2021-08-13 12:45:57,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:45:57,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432568336] [2021-08-13 12:45:57,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:45:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:45:57,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:57,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:57,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:57,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:57,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:57,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:57,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:57,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:57,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:57,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:57,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:57,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:57,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:57,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:45:57,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:57,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:57,417 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:45:57,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:45:57,421 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 12:45:57,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:45:57,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432568336] [2021-08-13 12:45:57,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432568336] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:45:57,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:45:57,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:45:57,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287923737] [2021-08-13 12:45:57,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:45:57,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:45:57,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:45:57,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:45:57,425 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:45:57,426 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 72 transitions, 344 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:45:57,426 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:45:57,426 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:45:57,427 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:45:57,735 INFO L129 PetriNetUnfolder]: 894/1679 cut-off events. [2021-08-13 12:45:57,735 INFO L130 PetriNetUnfolder]: For 410/410 co-relation queries the response was YES. [2021-08-13 12:45:57,739 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4873 conditions, 1679 events. 894/1679 cut-off events. For 410/410 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10053 event pairs, 247 based on Foata normal form. 1/1680 useless extension candidates. Maximal degree in co-relation 4733. Up to 756 conditions per place. [2021-08-13 12:45:57,749 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 51 selfloop transitions, 35 changer transitions 2/98 dead transitions. [2021-08-13 12:45:57,750 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 98 transitions, 624 flow [2021-08-13 12:45:57,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:45:57,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:45:57,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-08-13 12:45:57,752 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7642045454545454 [2021-08-13 12:45:57,752 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-08-13 12:45:57,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-08-13 12:45:57,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:45:57,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-08-13 12:45:57,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.625) internal successors, (269), 8 states have internal predecessors, (269), 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 12:45:57,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:45:57,755 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:45:57,755 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 17 predicate places. [2021-08-13 12:45:57,755 INFO L482 AbstractCegarLoop]: Abstraction has has 56 places, 98 transitions, 624 flow [2021-08-13 12:45:57,756 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:45:57,756 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:45:57,756 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] [2021-08-13 12:45:57,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 12:45:57,757 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:45:57,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:45:57,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1249715524, now seen corresponding path program 3 times [2021-08-13 12:45:57,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:45:57,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092987854] [2021-08-13 12:45:57,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:45:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:45:57,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:57,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:57,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:57,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:57,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:57,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:57,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:57,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:57,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:57,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:57,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:57,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:57,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:57,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:45:57,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:57,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:57,882 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:45:57,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:45:57,888 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 12:45:57,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:45:57,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092987854] [2021-08-13 12:45:57,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092987854] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:45:57,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:45:57,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:45:57,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339369948] [2021-08-13 12:45:57,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:45:57,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:45:57,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:45:57,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:45:57,891 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:45:57,891 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 98 transitions, 624 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:45:57,891 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:45:57,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:45:57,894 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:45:58,190 INFO L129 PetriNetUnfolder]: 916/1741 cut-off events. [2021-08-13 12:45:58,191 INFO L130 PetriNetUnfolder]: For 427/427 co-relation queries the response was YES. [2021-08-13 12:45:58,195 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6474 conditions, 1741 events. 916/1741 cut-off events. For 427/427 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 10659 event pairs, 254 based on Foata normal form. 1/1742 useless extension candidates. Maximal degree in co-relation 6301. Up to 802 conditions per place. [2021-08-13 12:45:58,206 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 75 selfloop transitions, 37 changer transitions 2/124 dead transitions. [2021-08-13 12:45:58,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 124 transitions, 1008 flow [2021-08-13 12:45:58,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:45:58,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:45:58,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-08-13 12:45:58,208 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7642045454545454 [2021-08-13 12:45:58,208 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-08-13 12:45:58,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-08-13 12:45:58,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:45:58,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-08-13 12:45:58,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.625) internal successors, (269), 8 states have internal predecessors, (269), 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 12:45:58,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:45:58,210 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:45:58,211 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 24 predicate places. [2021-08-13 12:45:58,211 INFO L482 AbstractCegarLoop]: Abstraction has has 63 places, 124 transitions, 1008 flow [2021-08-13 12:45:58,211 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:45:58,211 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:45:58,211 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] [2021-08-13 12:45:58,211 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 12:45:58,211 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:45:58,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:45:58,212 INFO L82 PathProgramCache]: Analyzing trace with hash -466014492, now seen corresponding path program 4 times [2021-08-13 12:45:58,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:45:58,212 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268329338] [2021-08-13 12:45:58,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:45:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:45:58,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:58,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:58,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:58,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:58,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:58,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:58,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:58,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:58,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:58,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:58,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:58,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:58,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:58,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:45:58,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:58,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:58,327 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:45:58,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:45:58,331 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 12:45:58,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:45:58,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268329338] [2021-08-13 12:45:58,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268329338] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:45:58,337 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:45:58,337 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:45:58,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893708655] [2021-08-13 12:45:58,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:45:58,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:45:58,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:45:58,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:45:58,339 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:45:58,339 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 124 transitions, 1008 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:45:58,339 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:45:58,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:45:58,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:45:58,646 INFO L129 PetriNetUnfolder]: 947/1865 cut-off events. [2021-08-13 12:45:58,646 INFO L130 PetriNetUnfolder]: For 489/489 co-relation queries the response was YES. [2021-08-13 12:45:58,652 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8300 conditions, 1865 events. 947/1865 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 11961 event pairs, 251 based on Foata normal form. 1/1866 useless extension candidates. Maximal degree in co-relation 8086. Up to 858 conditions per place. [2021-08-13 12:45:58,666 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 106 selfloop transitions, 35 changer transitions 4/155 dead transitions. [2021-08-13 12:45:58,666 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 155 transitions, 1571 flow [2021-08-13 12:45:58,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:45:58,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:45:58,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 270 transitions. [2021-08-13 12:45:58,668 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2021-08-13 12:45:58,668 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 270 transitions. [2021-08-13 12:45:58,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 270 transitions. [2021-08-13 12:45:58,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:45:58,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 270 transitions. [2021-08-13 12:45:58,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.75) internal successors, (270), 8 states have internal predecessors, (270), 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 12:45:58,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:45:58,670 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:45:58,670 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 31 predicate places. [2021-08-13 12:45:58,670 INFO L482 AbstractCegarLoop]: Abstraction has has 70 places, 155 transitions, 1571 flow [2021-08-13 12:45:58,670 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:45:58,670 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:45:58,671 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] [2021-08-13 12:45:58,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 12:45:58,671 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:45:58,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:45:58,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1968692424, now seen corresponding path program 5 times [2021-08-13 12:45:58,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:45:58,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174746348] [2021-08-13 12:45:58,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:45:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:45:58,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:58,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:58,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:58,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:58,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:58,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:58,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:58,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:58,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:58,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:45:58,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:58,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:45:58,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:58,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:45:58,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:58,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:58,787 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:45:58,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:45:58,793 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 12:45:58,793 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:45:58,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174746348] [2021-08-13 12:45:58,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174746348] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:45:58,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:45:58,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:45:58,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381243943] [2021-08-13 12:45:58,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:45:58,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:45:58,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:45:58,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:45:58,815 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:45:58,816 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 155 transitions, 1571 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:45:58,816 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:45:58,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:45:58,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:45:59,196 INFO L129 PetriNetUnfolder]: 1068/2163 cut-off events. [2021-08-13 12:45:59,196 INFO L130 PetriNetUnfolder]: For 575/575 co-relation queries the response was YES. [2021-08-13 12:45:59,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11217 conditions, 2163 events. 1068/2163 cut-off events. For 575/575 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 14765 event pairs, 178 based on Foata normal form. 1/2164 useless extension candidates. Maximal degree in co-relation 10951. Up to 1144 conditions per place. [2021-08-13 12:45:59,222 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 173 selfloop transitions, 55 changer transitions 9/247 dead transitions. [2021-08-13 12:45:59,223 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 247 transitions, 3000 flow [2021-08-13 12:45:59,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:45:59,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:45:59,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-08-13 12:45:59,224 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-08-13 12:45:59,225 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-08-13 12:45:59,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-08-13 12:45:59,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:45:59,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-08-13 12:45:59,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.111111111111114) internal successors, (298), 9 states have internal predecessors, (298), 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 12:45:59,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:45:59,227 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:45:59,227 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 39 predicate places. [2021-08-13 12:45:59,227 INFO L482 AbstractCegarLoop]: Abstraction has has 78 places, 247 transitions, 3000 flow [2021-08-13 12:45:59,228 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:45:59,228 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:45:59,228 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] [2021-08-13 12:45:59,228 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 12:45:59,229 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:45:59,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:45:59,229 INFO L82 PathProgramCache]: Analyzing trace with hash -770218848, now seen corresponding path program 6 times [2021-08-13 12:45:59,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:45:59,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100896309] [2021-08-13 12:45:59,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:45:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:45:59,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:59,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:59,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:59,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:59,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:59,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:59,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:59,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:59,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:59,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:45:59,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:59,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:59,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:59,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:45:59,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:59,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:59,325 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:45:59,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:45:59,328 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 12:45:59,328 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:45:59,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100896309] [2021-08-13 12:45:59,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100896309] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:45:59,329 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:45:59,329 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:45:59,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443062421] [2021-08-13 12:45:59,330 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:45:59,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:45:59,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:45:59,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:45:59,331 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:45:59,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 247 transitions, 3000 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:45:59,331 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:45:59,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:45:59,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:45:59,757 INFO L129 PetriNetUnfolder]: 1080/2200 cut-off events. [2021-08-13 12:45:59,757 INFO L130 PetriNetUnfolder]: For 583/583 co-relation queries the response was YES. [2021-08-13 12:45:59,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13124 conditions, 2200 events. 1080/2200 cut-off events. For 583/583 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 15157 event pairs, 178 based on Foata normal form. 1/2201 useless extension candidates. Maximal degree in co-relation 12855. Up to 1175 conditions per place. [2021-08-13 12:45:59,794 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 206 selfloop transitions, 50 changer transitions 11/277 dead transitions. [2021-08-13 12:45:59,794 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 277 transitions, 3894 flow [2021-08-13 12:45:59,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:45:59,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:45:59,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 268 transitions. [2021-08-13 12:45:59,796 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2021-08-13 12:45:59,796 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 268 transitions. [2021-08-13 12:45:59,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 268 transitions. [2021-08-13 12:45:59,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:45:59,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 268 transitions. [2021-08-13 12:45:59,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.5) internal successors, (268), 8 states have internal predecessors, (268), 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 12:45:59,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:45:59,798 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:45:59,798 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 46 predicate places. [2021-08-13 12:45:59,799 INFO L482 AbstractCegarLoop]: Abstraction has has 85 places, 277 transitions, 3894 flow [2021-08-13 12:45:59,799 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:45:59,799 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:45:59,799 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] [2021-08-13 12:45:59,799 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 12:45:59,799 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:45:59,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:45:59,799 INFO L82 PathProgramCache]: Analyzing trace with hash -889785942, now seen corresponding path program 7 times [2021-08-13 12:45:59,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:45:59,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959400577] [2021-08-13 12:45:59,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:45:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:45:59,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:59,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:59,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:59,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:59,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:59,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:59,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:59,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:59,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:59,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:45:59,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:59,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:45:59,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:59,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:45:59,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:45:59,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:45:59,902 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:45:59,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:45:59,905 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 12:45:59,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:45:59,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959400577] [2021-08-13 12:45:59,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959400577] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:45:59,908 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:45:59,908 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:45:59,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881282957] [2021-08-13 12:45:59,908 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:45:59,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:45:59,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:45:59,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:45:59,910 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:45:59,910 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 277 transitions, 3894 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:45:59,910 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:45:59,910 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:45:59,910 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:46:00,441 INFO L129 PetriNetUnfolder]: 1116/2309 cut-off events. [2021-08-13 12:46:00,442 INFO L130 PetriNetUnfolder]: For 626/626 co-relation queries the response was YES. [2021-08-13 12:46:00,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15445 conditions, 2309 events. 1116/2309 cut-off events. For 626/626 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 16193 event pairs, 178 based on Foata normal form. 1/2308 useless extension candidates. Maximal degree in co-relation 15154. Up to 1242 conditions per place. [2021-08-13 12:46:00,470 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 214 selfloop transitions, 70 changer transitions 20/314 dead transitions. [2021-08-13 12:46:00,471 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 314 transitions, 5020 flow [2021-08-13 12:46:00,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:46:00,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:46:00,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-08-13 12:46:00,472 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-08-13 12:46:00,472 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-08-13 12:46:00,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-08-13 12:46:00,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:46:00,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-08-13 12:46:00,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.111111111111114) internal successors, (298), 9 states have internal predecessors, (298), 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 12:46:00,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:00,474 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:00,475 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 54 predicate places. [2021-08-13 12:46:00,475 INFO L482 AbstractCegarLoop]: Abstraction has has 93 places, 314 transitions, 5020 flow [2021-08-13 12:46:00,475 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:00,475 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:46:00,475 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] [2021-08-13 12:46:00,475 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 12:46:00,475 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:46:00,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:46:00,476 INFO L82 PathProgramCache]: Analyzing trace with hash 449096972, now seen corresponding path program 8 times [2021-08-13 12:46:00,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:46:00,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334835939] [2021-08-13 12:46:00,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:46:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:46:00,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:00,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:00,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:00,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:00,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:00,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:00,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:00,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:00,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:00,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:00,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:00,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:00,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:00,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:00,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:00,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:00,650 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:46:00,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:46:00,655 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 12:46:00,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:46:00,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334835939] [2021-08-13 12:46:00,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334835939] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:46:00,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:46:00,655 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:46:00,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324095294] [2021-08-13 12:46:00,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:46:00,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:46:00,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:46:00,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:46:00,658 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:46:00,658 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 314 transitions, 5020 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:00,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:46:00,658 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:46:00,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:46:01,210 INFO L129 PetriNetUnfolder]: 1131/2358 cut-off events. [2021-08-13 12:46:01,210 INFO L130 PetriNetUnfolder]: For 649/649 co-relation queries the response was YES. [2021-08-13 12:46:01,219 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17567 conditions, 2358 events. 1131/2358 cut-off events. For 649/649 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 16731 event pairs, 175 based on Foata normal form. 1/2356 useless extension candidates. Maximal degree in co-relation 17263. Up to 1276 conditions per place. [2021-08-13 12:46:01,239 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 204 selfloop transitions, 92 changer transitions 28/334 dead transitions. [2021-08-13 12:46:01,239 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 334 transitions, 5988 flow [2021-08-13 12:46:01,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:46:01,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:46:01,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 301 transitions. [2021-08-13 12:46:01,241 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.76010101010101 [2021-08-13 12:46:01,241 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 301 transitions. [2021-08-13 12:46:01,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 301 transitions. [2021-08-13 12:46:01,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:46:01,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 301 transitions. [2021-08-13 12:46:01,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.44444444444444) internal successors, (301), 9 states have internal predecessors, (301), 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 12:46:01,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:01,244 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:01,244 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 62 predicate places. [2021-08-13 12:46:01,244 INFO L482 AbstractCegarLoop]: Abstraction has has 101 places, 334 transitions, 5988 flow [2021-08-13 12:46:01,244 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:01,244 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:46:01,245 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] [2021-08-13 12:46:01,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 12:46:01,245 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:46:01,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:46:01,246 INFO L82 PathProgramCache]: Analyzing trace with hash -741333820, now seen corresponding path program 9 times [2021-08-13 12:46:01,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:46:01,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156807571] [2021-08-13 12:46:01,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:46:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:46:01,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:01,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:01,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:01,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:01,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:01,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:01,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:01,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:01,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:01,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:01,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:01,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:46:01,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:01,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:01,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:01,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:01,368 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:46:01,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:46:01,372 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 12:46:01,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:46:01,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156807571] [2021-08-13 12:46:01,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156807571] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:46:01,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:46:01,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:46:01,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249506932] [2021-08-13 12:46:01,373 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:46:01,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:46:01,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:46:01,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:46:01,374 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:46:01,374 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 334 transitions, 5988 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:01,375 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:46:01,375 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:46:01,375 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:46:01,938 INFO L129 PetriNetUnfolder]: 1177/2509 cut-off events. [2021-08-13 12:46:01,938 INFO L130 PetriNetUnfolder]: For 673/673 co-relation queries the response was YES. [2021-08-13 12:46:01,951 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20440 conditions, 2509 events. 1177/2509 cut-off events. For 673/673 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 18374 event pairs, 157 based on Foata normal form. 1/2509 useless extension candidates. Maximal degree in co-relation 20129. Up to 1374 conditions per place. [2021-08-13 12:46:01,978 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 284 selfloop transitions, 91 changer transitions 57/442 dead transitions. [2021-08-13 12:46:01,978 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 442 transitions, 8796 flow [2021-08-13 12:46:01,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:46:01,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:46:01,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 299 transitions. [2021-08-13 12:46:01,980 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2021-08-13 12:46:01,980 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 299 transitions. [2021-08-13 12:46:01,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 299 transitions. [2021-08-13 12:46:01,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:46:01,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 299 transitions. [2021-08-13 12:46:01,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.22222222222222) internal successors, (299), 9 states have internal predecessors, (299), 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 12:46:01,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:01,983 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:01,983 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 70 predicate places. [2021-08-13 12:46:01,983 INFO L482 AbstractCegarLoop]: Abstraction has has 109 places, 442 transitions, 8796 flow [2021-08-13 12:46:01,983 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:01,983 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:46:01,984 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] [2021-08-13 12:46:01,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 12:46:01,984 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:46:01,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:46:01,984 INFO L82 PathProgramCache]: Analyzing trace with hash -852093036, now seen corresponding path program 10 times [2021-08-13 12:46:01,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:46:01,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363901183] [2021-08-13 12:46:01,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:46:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:46:01,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:01,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:02,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:02,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:02,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:02,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:02,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:02,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:02,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:02,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:02,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:02,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:02,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:02,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:02,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:02,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:02,063 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:46:02,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:46:02,067 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 12:46:02,068 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:46:02,068 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363901183] [2021-08-13 12:46:02,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363901183] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:46:02,068 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:46:02,068 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:46:02,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443373843] [2021-08-13 12:46:02,069 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:46:02,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:46:02,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:46:02,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:46:02,070 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:46:02,070 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 442 transitions, 8796 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:46:02,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:46:02,071 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:46:02,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:46:02,655 INFO L129 PetriNetUnfolder]: 1189/2551 cut-off events. [2021-08-13 12:46:02,655 INFO L130 PetriNetUnfolder]: For 695/695 co-relation queries the response was YES. [2021-08-13 12:46:02,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22698 conditions, 2551 events. 1189/2551 cut-off events. For 695/695 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 18935 event pairs, 157 based on Foata normal form. 1/2549 useless extension candidates. Maximal degree in co-relation 22380. Up to 1427 conditions per place. [2021-08-13 12:46:02,688 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 330 selfloop transitions, 62 changer transitions 57/459 dead transitions. [2021-08-13 12:46:02,688 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 459 transitions, 10034 flow [2021-08-13 12:46:02,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:46:02,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:46:02,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 267 transitions. [2021-08-13 12:46:02,689 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7585227272727273 [2021-08-13 12:46:02,689 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 267 transitions. [2021-08-13 12:46:02,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 267 transitions. [2021-08-13 12:46:02,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:46:02,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 267 transitions. [2021-08-13 12:46:02,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.375) internal successors, (267), 8 states have internal predecessors, (267), 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 12:46:02,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:46:02,693 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:46:02,693 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 77 predicate places. [2021-08-13 12:46:02,693 INFO L482 AbstractCegarLoop]: Abstraction has has 116 places, 459 transitions, 10034 flow [2021-08-13 12:46:02,694 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:46:02,694 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:46:02,694 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] [2021-08-13 12:46:02,694 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-13 12:46:02,694 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:46:02,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:46:02,695 INFO L82 PathProgramCache]: Analyzing trace with hash 934782332, now seen corresponding path program 11 times [2021-08-13 12:46:02,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:46:02,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832174344] [2021-08-13 12:46:02,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:46:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:46:02,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:02,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:02,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:02,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:02,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:02,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:02,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:02,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:02,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:02,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:02,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:02,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:46:02,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:02,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:02,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:02,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:02,784 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:46:02,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:46:02,787 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 12:46:02,788 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:46:02,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832174344] [2021-08-13 12:46:02,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832174344] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:46:02,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:46:02,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:46:02,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857834494] [2021-08-13 12:46:02,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:46:02,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:46:02,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:46:02,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:46:02,791 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:46:02,791 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 459 transitions, 10034 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:02,791 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:46:02,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:46:02,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:46:03,554 INFO L129 PetriNetUnfolder]: 1209/2651 cut-off events. [2021-08-13 12:46:03,555 INFO L130 PetriNetUnfolder]: For 748/748 co-relation queries the response was YES. [2021-08-13 12:46:03,563 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25352 conditions, 2651 events. 1209/2651 cut-off events. For 748/748 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 20166 event pairs, 157 based on Foata normal form. 1/2649 useless extension candidates. Maximal degree in co-relation 25001. Up to 1479 conditions per place. [2021-08-13 12:46:03,588 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 329 selfloop transitions, 94 changer transitions 62/495 dead transitions. [2021-08-13 12:46:03,589 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 495 transitions, 11796 flow [2021-08-13 12:46:03,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:46:03,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:46:03,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-08-13 12:46:03,590 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 12:46:03,590 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-08-13 12:46:03,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-08-13 12:46:03,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:46:03,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-08-13 12:46:03,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 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 12:46:03,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:03,592 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:03,593 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 85 predicate places. [2021-08-13 12:46:03,593 INFO L482 AbstractCegarLoop]: Abstraction has has 124 places, 495 transitions, 11796 flow [2021-08-13 12:46:03,593 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:03,593 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:46:03,593 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] [2021-08-13 12:46:03,593 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-13 12:46:03,593 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:46:03,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:46:03,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1485732086, now seen corresponding path program 12 times [2021-08-13 12:46:03,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:46:03,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833025202] [2021-08-13 12:46:03,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:46:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:46:03,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:03,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:03,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:03,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:03,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:03,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:03,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:03,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:03,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:03,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:03,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:03,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:03,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:03,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:03,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:03,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:03,675 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:46:03,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:46:03,678 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 12:46:03,679 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:46:03,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833025202] [2021-08-13 12:46:03,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833025202] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:46:03,679 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:46:03,679 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:46:03,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912552839] [2021-08-13 12:46:03,679 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:46:03,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:46:03,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:46:03,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:46:03,680 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:46:03,681 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 495 transitions, 11796 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:03,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:46:03,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:46:03,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:46:04,428 INFO L129 PetriNetUnfolder]: 1222/2697 cut-off events. [2021-08-13 12:46:04,429 INFO L130 PetriNetUnfolder]: For 787/787 co-relation queries the response was YES. [2021-08-13 12:46:04,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27741 conditions, 2697 events. 1222/2697 cut-off events. For 787/787 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 20690 event pairs, 155 based on Foata normal form. 1/2696 useless extension candidates. Maximal degree in co-relation 27358. Up to 1505 conditions per place. [2021-08-13 12:46:04,458 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 308 selfloop transitions, 112 changer transitions 81/511 dead transitions. [2021-08-13 12:46:04,458 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 511 transitions, 13182 flow [2021-08-13 12:46:04,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:46:04,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:46:04,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 300 transitions. [2021-08-13 12:46:04,460 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2021-08-13 12:46:04,460 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 300 transitions. [2021-08-13 12:46:04,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 300 transitions. [2021-08-13 12:46:04,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:46:04,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 300 transitions. [2021-08-13 12:46:04,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.333333333333336) internal successors, (300), 9 states have internal predecessors, (300), 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 12:46:04,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:04,464 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:04,464 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 93 predicate places. [2021-08-13 12:46:04,464 INFO L482 AbstractCegarLoop]: Abstraction has has 132 places, 511 transitions, 13182 flow [2021-08-13 12:46:04,464 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:04,464 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:46:04,465 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] [2021-08-13 12:46:04,465 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-13 12:46:04,465 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:46:04,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:46:04,465 INFO L82 PathProgramCache]: Analyzing trace with hash -738542674, now seen corresponding path program 13 times [2021-08-13 12:46:04,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:46:04,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743567648] [2021-08-13 12:46:04,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:46:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:46:04,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:04,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:04,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:04,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:04,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:04,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:04,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:04,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:04,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:04,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:04,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:04,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:04,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:04,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:04,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:04,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:04,622 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:46:04,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:46:04,625 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 12:46:04,625 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:46:04,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743567648] [2021-08-13 12:46:04,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743567648] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:46:04,626 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:46:04,626 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:46:04,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256208079] [2021-08-13 12:46:04,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:46:04,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:46:04,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:46:04,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:46:04,628 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:46:04,628 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 511 transitions, 13182 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:46:04,628 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:46:04,628 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:46:04,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:46:05,314 INFO L129 PetriNetUnfolder]: 1279/2864 cut-off events. [2021-08-13 12:46:05,314 INFO L130 PetriNetUnfolder]: For 844/844 co-relation queries the response was YES. [2021-08-13 12:46:05,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31399 conditions, 2864 events. 1279/2864 cut-off events. For 844/844 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 22525 event pairs, 155 based on Foata normal form. 1/2862 useless extension candidates. Maximal degree in co-relation 30982. Up to 1577 conditions per place. [2021-08-13 12:46:05,345 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 384 selfloop transitions, 75 changer transitions 96/565 dead transitions. [2021-08-13 12:46:05,345 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 565 transitions, 15696 flow [2021-08-13 12:46:05,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:46:05,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:46:05,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-08-13 12:46:05,347 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7642045454545454 [2021-08-13 12:46:05,347 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-08-13 12:46:05,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-08-13 12:46:05,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:46:05,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-08-13 12:46:05,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.625) internal successors, (269), 8 states have internal predecessors, (269), 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 12:46:05,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:46:05,349 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:46:05,349 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 100 predicate places. [2021-08-13 12:46:05,349 INFO L482 AbstractCegarLoop]: Abstraction has has 139 places, 565 transitions, 15696 flow [2021-08-13 12:46:05,349 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:46:05,349 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:46:05,349 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] [2021-08-13 12:46:05,349 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-13 12:46:05,349 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:46:05,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:46:05,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1272456132, now seen corresponding path program 14 times [2021-08-13 12:46:05,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:46:05,350 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453767590] [2021-08-13 12:46:05,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:46:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:46:05,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:05,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:05,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:05,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:05,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:05,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:05,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:05,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:05,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:05,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:05,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:05,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:46:05,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:05,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:05,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:05,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:05,499 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:46:05,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:46:05,502 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 12:46:05,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:46:05,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453767590] [2021-08-13 12:46:05,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453767590] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:46:05,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:46:05,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:46:05,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603405322] [2021-08-13 12:46:05,505 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:46:05,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:46:05,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:46:05,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:46:05,506 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:46:05,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 565 transitions, 15696 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:05,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:46:05,507 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:46:05,507 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:46:06,410 INFO L129 PetriNetUnfolder]: 1323/3007 cut-off events. [2021-08-13 12:46:06,410 INFO L130 PetriNetUnfolder]: For 904/904 co-relation queries the response was YES. [2021-08-13 12:46:06,419 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34871 conditions, 3007 events. 1323/3007 cut-off events. For 904/904 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 24149 event pairs, 155 based on Foata normal form. 1/3005 useless extension candidates. Maximal degree in co-relation 34427. Up to 1660 conditions per place. [2021-08-13 12:46:06,441 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 414 selfloop transitions, 78 changer transitions 110/612 dead transitions. [2021-08-13 12:46:06,441 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 612 transitions, 18216 flow [2021-08-13 12:46:06,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:46:06,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:46:06,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-08-13 12:46:06,445 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-08-13 12:46:06,445 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-08-13 12:46:06,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-08-13 12:46:06,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:46:06,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-08-13 12:46:06,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.111111111111114) internal successors, (298), 9 states have internal predecessors, (298), 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 12:46:06,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:06,448 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:06,448 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 108 predicate places. [2021-08-13 12:46:06,448 INFO L482 AbstractCegarLoop]: Abstraction has has 147 places, 612 transitions, 18216 flow [2021-08-13 12:46:06,448 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:06,448 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:46:06,448 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] [2021-08-13 12:46:06,448 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-13 12:46:06,448 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:46:06,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:46:06,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1809580578, now seen corresponding path program 15 times [2021-08-13 12:46:06,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:46:06,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370046728] [2021-08-13 12:46:06,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:46:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:46:06,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:06,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:06,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:06,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:06,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:06,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:06,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:06,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:06,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:06,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:06,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:06,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:46:06,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:06,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:06,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:06,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:06,535 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:46:06,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:46:06,542 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 12:46:06,542 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:46:06,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370046728] [2021-08-13 12:46:06,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370046728] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:46:06,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:46:06,543 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:46:06,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444001792] [2021-08-13 12:46:06,543 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:46:06,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:46:06,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:46:06,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:46:06,544 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:46:06,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 612 transitions, 18216 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:06,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:46:06,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:46:06,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:46:07,546 INFO L129 PetriNetUnfolder]: 1342/3101 cut-off events. [2021-08-13 12:46:07,546 INFO L130 PetriNetUnfolder]: For 960/960 co-relation queries the response was YES. [2021-08-13 12:46:07,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37935 conditions, 3101 events. 1342/3101 cut-off events. For 960/960 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 25369 event pairs, 159 based on Foata normal form. 1/3099 useless extension candidates. Maximal degree in co-relation 37464. Up to 1708 conditions per place. [2021-08-13 12:46:07,584 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 402 selfloop transitions, 112 changer transitions 124/648 dead transitions. [2021-08-13 12:46:07,584 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 648 transitions, 20572 flow [2021-08-13 12:46:07,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:46:07,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:46:07,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 299 transitions. [2021-08-13 12:46:07,586 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2021-08-13 12:46:07,586 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 299 transitions. [2021-08-13 12:46:07,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 299 transitions. [2021-08-13 12:46:07,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:46:07,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 299 transitions. [2021-08-13 12:46:07,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.22222222222222) internal successors, (299), 9 states have internal predecessors, (299), 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 12:46:07,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:07,587 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:07,588 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 116 predicate places. [2021-08-13 12:46:07,588 INFO L482 AbstractCegarLoop]: Abstraction has has 155 places, 648 transitions, 20572 flow [2021-08-13 12:46:07,588 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:07,588 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:46:07,588 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] [2021-08-13 12:46:07,588 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-13 12:46:07,589 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:46:07,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:46:07,589 INFO L82 PathProgramCache]: Analyzing trace with hash -185273474, now seen corresponding path program 16 times [2021-08-13 12:46:07,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:46:07,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602835171] [2021-08-13 12:46:07,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:46:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:46:07,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:07,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:07,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:07,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:07,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:07,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:07,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:07,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:07,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:07,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:07,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:07,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:07,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:07,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:07,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:07,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:07,669 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:46:07,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:46:07,672 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 12:46:07,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:46:07,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602835171] [2021-08-13 12:46:07,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602835171] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:46:07,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:46:07,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:46:07,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430670524] [2021-08-13 12:46:07,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:46:07,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:46:07,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:46:07,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:46:07,674 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:46:07,675 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 648 transitions, 20572 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:07,675 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:46:07,675 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:46:07,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:46:08,981 INFO L129 PetriNetUnfolder]: 1347/3130 cut-off events. [2021-08-13 12:46:08,981 INFO L130 PetriNetUnfolder]: For 1004/1004 co-relation queries the response was YES. [2021-08-13 12:46:08,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40465 conditions, 3130 events. 1347/3130 cut-off events. For 1004/1004 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 25820 event pairs, 159 based on Foata normal form. 1/3128 useless extension candidates. Maximal degree in co-relation 39968. Up to 1721 conditions per place. [2021-08-13 12:46:09,010 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 384 selfloop transitions, 134 changer transitions 129/657 dead transitions. [2021-08-13 12:46:09,010 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 657 transitions, 22154 flow [2021-08-13 12:46:09,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:46:09,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:46:09,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 301 transitions. [2021-08-13 12:46:09,011 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.76010101010101 [2021-08-13 12:46:09,011 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 301 transitions. [2021-08-13 12:46:09,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 301 transitions. [2021-08-13 12:46:09,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:46:09,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 301 transitions. [2021-08-13 12:46:09,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.44444444444444) internal successors, (301), 9 states have internal predecessors, (301), 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 12:46:09,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:09,013 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:09,013 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 124 predicate places. [2021-08-13 12:46:09,014 INFO L482 AbstractCegarLoop]: Abstraction has has 163 places, 657 transitions, 22154 flow [2021-08-13 12:46:09,014 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:09,014 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:46:09,014 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] [2021-08-13 12:46:09,014 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-13 12:46:09,014 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:46:09,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:46:09,014 INFO L82 PathProgramCache]: Analyzing trace with hash 980497248, now seen corresponding path program 17 times [2021-08-13 12:46:09,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:46:09,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442298070] [2021-08-13 12:46:09,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:46:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:46:09,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:09,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:09,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:09,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:09,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:09,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:09,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:09,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:09,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:09,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:09,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:09,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:46:09,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:09,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:09,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:09,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:09,094 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:46:09,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:46:09,097 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 12:46:09,098 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:46:09,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442298070] [2021-08-13 12:46:09,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442298070] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:46:09,098 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:46:09,098 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:46:09,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752541398] [2021-08-13 12:46:09,098 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:46:09,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:46:09,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:46:09,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:46:09,099 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:46:09,100 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 657 transitions, 22154 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:09,100 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:46:09,100 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:46:09,100 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:46:10,275 INFO L129 PetriNetUnfolder]: 1404/3380 cut-off events. [2021-08-13 12:46:10,275 INFO L130 PetriNetUnfolder]: For 1132/1132 co-relation queries the response was YES. [2021-08-13 12:46:10,282 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45292 conditions, 3380 events. 1404/3380 cut-off events. For 1132/1132 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 29105 event pairs, 154 based on Foata normal form. 1/3378 useless extension candidates. Maximal degree in co-relation 44746. Up to 1851 conditions per place. [2021-08-13 12:46:10,301 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 512 selfloop transitions, 90 changer transitions 162/774 dead transitions. [2021-08-13 12:46:10,302 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 774 transitions, 27710 flow [2021-08-13 12:46:10,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:46:10,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:46:10,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-08-13 12:46:10,309 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 12:46:10,310 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-08-13 12:46:10,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-08-13 12:46:10,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:46:10,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-08-13 12:46:10,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 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 12:46:10,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:10,313 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:10,314 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 132 predicate places. [2021-08-13 12:46:10,314 INFO L482 AbstractCegarLoop]: Abstraction has has 171 places, 774 transitions, 27710 flow [2021-08-13 12:46:10,314 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:10,314 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:46:10,314 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] [2021-08-13 12:46:10,314 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-13 12:46:10,314 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:46:10,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:46:10,315 INFO L82 PathProgramCache]: Analyzing trace with hash 523850460, now seen corresponding path program 18 times [2021-08-13 12:46:10,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:46:10,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265685157] [2021-08-13 12:46:10,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:46:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:46:10,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:10,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:10,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:10,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:10,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:10,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:10,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:10,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:10,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:10,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:10,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:10,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:46:10,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:10,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:10,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:10,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:10,413 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:46:10,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:46:10,416 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 12:46:10,416 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:46:10,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265685157] [2021-08-13 12:46:10,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265685157] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:46:10,416 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:46:10,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:46:10,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819604377] [2021-08-13 12:46:10,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:46:10,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:46:10,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:46:10,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:46:10,417 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:46:10,418 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 774 transitions, 27710 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:10,418 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:46:10,418 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:46:10,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:46:11,796 INFO L129 PetriNetUnfolder]: 1416/3465 cut-off events. [2021-08-13 12:46:11,797 INFO L130 PetriNetUnfolder]: For 1195/1195 co-relation queries the response was YES. [2021-08-13 12:46:11,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48626 conditions, 3465 events. 1416/3465 cut-off events. For 1195/1195 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 30368 event pairs, 154 based on Foata normal form. 1/3461 useless extension candidates. Maximal degree in co-relation 48048. Up to 1896 conditions per place. [2021-08-13 12:46:11,824 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 496 selfloop transitions, 128 changer transitions 200/834 dead transitions. [2021-08-13 12:46:11,824 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 834 transitions, 31518 flow [2021-08-13 12:46:11,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:46:11,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:46:11,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-08-13 12:46:11,829 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 12:46:11,829 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-08-13 12:46:11,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-08-13 12:46:11,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:46:11,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-08-13 12:46:11,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 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 12:46:11,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:11,832 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:11,832 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 140 predicate places. [2021-08-13 12:46:11,832 INFO L482 AbstractCegarLoop]: Abstraction has has 179 places, 834 transitions, 31518 flow [2021-08-13 12:46:11,832 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:11,832 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:46:11,832 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] [2021-08-13 12:46:11,832 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-13 12:46:11,833 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:46:11,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:46:11,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1046380510, now seen corresponding path program 19 times [2021-08-13 12:46:11,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:46:11,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22874670] [2021-08-13 12:46:11,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:46:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:46:11,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:11,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:11,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:11,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:11,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:11,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:11,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:11,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:11,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:11,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:11,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:11,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:46:11,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:11,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:11,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:11,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:11,917 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:46:11,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:46:11,921 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 12:46:11,922 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:46:11,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22874670] [2021-08-13 12:46:11,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22874670] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:46:11,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:46:11,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:46:11,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120000832] [2021-08-13 12:46:11,922 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:46:11,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:46:11,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:46:11,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:46:11,923 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:46:11,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 834 transitions, 31518 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:11,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:46:11,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:46:11,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:46:13,595 INFO L129 PetriNetUnfolder]: 1427/3555 cut-off events. [2021-08-13 12:46:13,596 INFO L130 PetriNetUnfolder]: For 1260/1260 co-relation queries the response was YES. [2021-08-13 12:46:13,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52112 conditions, 3555 events. 1427/3555 cut-off events. For 1260/1260 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 31708 event pairs, 163 based on Foata normal form. 1/3550 useless extension candidates. Maximal degree in co-relation 51502. Up to 1944 conditions per place. [2021-08-13 12:46:13,630 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 510 selfloop transitions, 129 changer transitions 223/872 dead transitions. [2021-08-13 12:46:13,631 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 872 transitions, 34686 flow [2021-08-13 12:46:13,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:46:13,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:46:13,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 296 transitions. [2021-08-13 12:46:13,632 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7474747474747475 [2021-08-13 12:46:13,632 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 296 transitions. [2021-08-13 12:46:13,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 296 transitions. [2021-08-13 12:46:13,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:46:13,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 296 transitions. [2021-08-13 12:46:13,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.888888888888886) internal successors, (296), 9 states have internal predecessors, (296), 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 12:46:13,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:13,634 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:13,634 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 148 predicate places. [2021-08-13 12:46:13,634 INFO L482 AbstractCegarLoop]: Abstraction has has 187 places, 872 transitions, 34686 flow [2021-08-13 12:46:13,634 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:13,634 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:46:13,635 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] [2021-08-13 12:46:13,635 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-13 12:46:13,635 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:46:13,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:46:13,635 INFO L82 PathProgramCache]: Analyzing trace with hash -206023826, now seen corresponding path program 20 times [2021-08-13 12:46:13,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:46:13,636 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977376786] [2021-08-13 12:46:13,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:46:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:46:13,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:13,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:13,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:13,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:13,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:13,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:13,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:13,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:13,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:13,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:13,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:13,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:13,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:13,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:13,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:13,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:13,688 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:46:13,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:46:13,691 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 12:46:13,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:46:13,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977376786] [2021-08-13 12:46:13,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977376786] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:46:13,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:46:13,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:46:13,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759859253] [2021-08-13 12:46:13,692 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:46:13,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:46:13,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:46:13,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:46:13,693 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:46:13,694 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 872 transitions, 34686 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 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 12:46:13,694 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:46:13,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:46:13,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:46:15,825 INFO L129 PetriNetUnfolder]: 1494/3729 cut-off events. [2021-08-13 12:46:15,825 INFO L130 PetriNetUnfolder]: For 1379/1379 co-relation queries the response was YES. [2021-08-13 12:46:15,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56979 conditions, 3729 events. 1494/3729 cut-off events. For 1379/1379 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 33678 event pairs, 104 based on Foata normal form. 1/3724 useless extension candidates. Maximal degree in co-relation 56310. Up to 2163 conditions per place. [2021-08-13 12:46:15,871 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 619 selfloop transitions, 48 changer transitions 223/900 dead transitions. [2021-08-13 12:46:15,872 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 900 transitions, 37621 flow [2021-08-13 12:46:15,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:46:15,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:46:15,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2021-08-13 12:46:15,873 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7694805194805194 [2021-08-13 12:46:15,873 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 237 transitions. [2021-08-13 12:46:15,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 237 transitions. [2021-08-13 12:46:15,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:46:15,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 237 transitions. [2021-08-13 12:46:15,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 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 12:46:15,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 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 12:46:15,874 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 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 12:46:15,874 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 154 predicate places. [2021-08-13 12:46:15,874 INFO L482 AbstractCegarLoop]: Abstraction has has 193 places, 900 transitions, 37621 flow [2021-08-13 12:46:15,874 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 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 12:46:15,874 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:46:15,874 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] [2021-08-13 12:46:15,874 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-13 12:46:15,874 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:46:15,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:46:15,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1672089880, now seen corresponding path program 21 times [2021-08-13 12:46:15,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:46:15,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859151907] [2021-08-13 12:46:15,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:46:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:46:15,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:15,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:16,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:16,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:16,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:16,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:16,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:16,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:16,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:16,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:16,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:16,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:16,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:16,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:16,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:16,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:16,050 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:46:16,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:46:16,115 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 12:46:16,115 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:46:16,115 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859151907] [2021-08-13 12:46:16,115 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859151907] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:46:16,116 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:46:16,116 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:46:16,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024924000] [2021-08-13 12:46:16,116 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:46:16,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:46:16,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:46:16,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:46:16,117 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:46:16,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 900 transitions, 37621 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:46:16,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:46:16,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:46:16,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:46:18,679 INFO L129 PetriNetUnfolder]: 1516/3789 cut-off events. [2021-08-13 12:46:18,679 INFO L130 PetriNetUnfolder]: For 1427/1427 co-relation queries the response was YES. [2021-08-13 12:46:18,690 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60685 conditions, 3789 events. 1516/3789 cut-off events. For 1427/1427 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 34368 event pairs, 108 based on Foata normal form. 1/3784 useless extension candidates. Maximal degree in co-relation 60015. Up to 2212 conditions per place. [2021-08-13 12:46:18,712 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 629 selfloop transitions, 65 changer transitions 223/927 dead transitions. [2021-08-13 12:46:18,712 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 927 transitions, 40589 flow [2021-08-13 12:46:18,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:46:18,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:46:18,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 268 transitions. [2021-08-13 12:46:18,713 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2021-08-13 12:46:18,714 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 268 transitions. [2021-08-13 12:46:18,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 268 transitions. [2021-08-13 12:46:18,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:46:18,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 268 transitions. [2021-08-13 12:46:18,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.5) internal successors, (268), 8 states have internal predecessors, (268), 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 12:46:18,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:46:18,715 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:46:18,715 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 161 predicate places. [2021-08-13 12:46:18,715 INFO L482 AbstractCegarLoop]: Abstraction has has 200 places, 927 transitions, 40589 flow [2021-08-13 12:46:18,715 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:46:18,716 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:46:18,716 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] [2021-08-13 12:46:18,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-13 12:46:18,716 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:46:18,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:46:18,716 INFO L82 PathProgramCache]: Analyzing trace with hash -174073140, now seen corresponding path program 22 times [2021-08-13 12:46:18,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:46:18,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600745719] [2021-08-13 12:46:18,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:46:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:46:18,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:18,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:18,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:18,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:18,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:18,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:18,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:18,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:18,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:18,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:18,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:18,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:18,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:18,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:18,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:18,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:18,787 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:46:18,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:46:18,789 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 12:46:18,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:46:18,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600745719] [2021-08-13 12:46:18,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600745719] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:46:18,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:46:18,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:46:18,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297228788] [2021-08-13 12:46:18,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:46:18,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:46:18,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:46:18,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:46:18,791 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:46:18,791 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 927 transitions, 40589 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:46:18,791 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:46:18,791 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:46:18,791 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:46:21,386 INFO L129 PetriNetUnfolder]: 1546/3899 cut-off events. [2021-08-13 12:46:21,386 INFO L130 PetriNetUnfolder]: For 1523/1523 co-relation queries the response was YES. [2021-08-13 12:46:21,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64742 conditions, 3899 events. 1546/3899 cut-off events. For 1523/1523 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 35849 event pairs, 98 based on Foata normal form. 1/3894 useless extension candidates. Maximal degree in co-relation 64016. Up to 2268 conditions per place. [2021-08-13 12:46:21,424 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 634 selfloop transitions, 94 changer transitions 223/961 dead transitions. [2021-08-13 12:46:21,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 961 transitions, 44027 flow [2021-08-13 12:46:21,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:46:21,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:46:21,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 270 transitions. [2021-08-13 12:46:21,425 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2021-08-13 12:46:21,425 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 270 transitions. [2021-08-13 12:46:21,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 270 transitions. [2021-08-13 12:46:21,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:46:21,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 270 transitions. [2021-08-13 12:46:21,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.75) internal successors, (270), 8 states have internal predecessors, (270), 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 12:46:21,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:46:21,427 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:46:21,427 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 168 predicate places. [2021-08-13 12:46:21,427 INFO L482 AbstractCegarLoop]: Abstraction has has 207 places, 961 transitions, 44027 flow [2021-08-13 12:46:21,427 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:46:21,427 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:46:21,427 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] [2021-08-13 12:46:21,427 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-13 12:46:21,427 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:46:21,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:46:21,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1398778186, now seen corresponding path program 23 times [2021-08-13 12:46:21,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:46:21,429 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425511083] [2021-08-13 12:46:21,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:46:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:46:21,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:21,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:21,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:21,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:21,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:21,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:21,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:21,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:21,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:21,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:21,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:21,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:21,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:21,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:21,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:21,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:21,489 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:46:21,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:46:21,492 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 12:46:21,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:46:21,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425511083] [2021-08-13 12:46:21,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425511083] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:46:21,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:46:21,493 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:46:21,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282181266] [2021-08-13 12:46:21,493 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:46:21,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:46:21,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:46:21,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:46:21,494 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:46:21,494 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 961 transitions, 44027 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:46:21,494 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:46:21,494 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:46:21,494 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:46:24,592 INFO L129 PetriNetUnfolder]: 1622/4111 cut-off events. [2021-08-13 12:46:24,592 INFO L130 PetriNetUnfolder]: For 1630/1630 co-relation queries the response was YES. [2021-08-13 12:46:24,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70746 conditions, 4111 events. 1622/4111 cut-off events. For 1630/1630 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 38395 event pairs, 76 based on Foata normal form. 1/4106 useless extension candidates. Maximal degree in co-relation 69957. Up to 2399 conditions per place. [2021-08-13 12:46:24,638 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 733 selfloop transitions, 59 changer transitions 224/1026 dead transitions. [2021-08-13 12:46:24,638 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 1026 transitions, 49074 flow [2021-08-13 12:46:24,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:46:24,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:46:24,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 268 transitions. [2021-08-13 12:46:24,640 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2021-08-13 12:46:24,640 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 268 transitions. [2021-08-13 12:46:24,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 268 transitions. [2021-08-13 12:46:24,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:46:24,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 268 transitions. [2021-08-13 12:46:24,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.5) internal successors, (268), 8 states have internal predecessors, (268), 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 12:46:24,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:46:24,642 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:46:24,642 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 175 predicate places. [2021-08-13 12:46:24,642 INFO L482 AbstractCegarLoop]: Abstraction has has 214 places, 1026 transitions, 49074 flow [2021-08-13 12:46:24,642 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:46:24,642 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:46:24,642 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] [2021-08-13 12:46:24,642 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-13 12:46:24,642 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:46:24,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:46:24,643 INFO L82 PathProgramCache]: Analyzing trace with hash -442799866, now seen corresponding path program 24 times [2021-08-13 12:46:24,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:46:24,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539975937] [2021-08-13 12:46:24,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:46:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:46:24,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:24,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:24,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:24,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:24,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:24,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:24,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:24,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:24,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:24,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:24,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:24,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:24,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:24,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:24,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:24,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:24,732 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:46:24,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:46:24,735 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 12:46:24,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:46:24,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539975937] [2021-08-13 12:46:24,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539975937] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:46:24,736 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:46:24,736 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:46:24,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003566018] [2021-08-13 12:46:24,737 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:46:24,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:46:24,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:46:24,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:46:24,738 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:46:24,738 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 1026 transitions, 49074 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:46:24,738 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:46:24,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:46:24,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:46:28,081 INFO L129 PetriNetUnfolder]: 1635/4163 cut-off events. [2021-08-13 12:46:28,082 INFO L130 PetriNetUnfolder]: For 1694/1694 co-relation queries the response was YES. [2021-08-13 12:46:28,102 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74310 conditions, 4163 events. 1635/4163 cut-off events. For 1694/1694 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 39052 event pairs, 79 based on Foata normal form. 1/4157 useless extension candidates. Maximal degree in co-relation 73495. Up to 2426 conditions per place. [2021-08-13 12:46:28,139 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 740 selfloop transitions, 82 changer transitions 225/1057 dead transitions. [2021-08-13 12:46:28,139 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 1057 transitions, 52656 flow [2021-08-13 12:46:28,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:46:28,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:46:28,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-08-13 12:46:28,140 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7642045454545454 [2021-08-13 12:46:28,141 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-08-13 12:46:28,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-08-13 12:46:28,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:46:28,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-08-13 12:46:28,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.625) internal successors, (269), 8 states have internal predecessors, (269), 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 12:46:28,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:46:28,142 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:46:28,142 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 182 predicate places. [2021-08-13 12:46:28,143 INFO L482 AbstractCegarLoop]: Abstraction has has 221 places, 1057 transitions, 52656 flow [2021-08-13 12:46:28,143 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:46:28,143 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:46:28,143 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] [2021-08-13 12:46:28,143 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-13 12:46:28,143 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:46:28,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:46:28,143 INFO L82 PathProgramCache]: Analyzing trace with hash -649609574, now seen corresponding path program 25 times [2021-08-13 12:46:28,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:46:28,144 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991686510] [2021-08-13 12:46:28,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:46:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:46:28,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:28,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:28,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:28,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:28,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:28,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:28,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:28,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:28,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:28,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:28,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:28,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:28,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:28,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:28,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:28,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:28,224 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:46:28,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:46:28,226 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 12:46:28,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:46:28,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991686510] [2021-08-13 12:46:28,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991686510] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:46:28,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:46:28,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:46:28,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867034791] [2021-08-13 12:46:28,227 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:46:28,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:46:28,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:46:28,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:46:28,228 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:46:28,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 1057 transitions, 52656 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:28,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:46:28,228 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:46:28,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:46:32,330 INFO L129 PetriNetUnfolder]: 1652/4224 cut-off events. [2021-08-13 12:46:32,330 INFO L130 PetriNetUnfolder]: For 1759/1759 co-relation queries the response was YES. [2021-08-13 12:46:32,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78094 conditions, 4224 events. 1652/4224 cut-off events. For 1759/1759 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 39899 event pairs, 79 based on Foata normal form. 1/4219 useless extension candidates. Maximal degree in co-relation 77241. Up to 2459 conditions per place. [2021-08-13 12:46:32,373 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 708 selfloop transitions, 112 changer transitions 248/1078 dead transitions. [2021-08-13 12:46:32,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 1078 transitions, 55842 flow [2021-08-13 12:46:32,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:46:32,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:46:32,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 300 transitions. [2021-08-13 12:46:32,374 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2021-08-13 12:46:32,374 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 300 transitions. [2021-08-13 12:46:32,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 300 transitions. [2021-08-13 12:46:32,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:46:32,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 300 transitions. [2021-08-13 12:46:32,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.333333333333336) internal successors, (300), 9 states have internal predecessors, (300), 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 12:46:32,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:32,376 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:32,376 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 190 predicate places. [2021-08-13 12:46:32,376 INFO L482 AbstractCegarLoop]: Abstraction has has 229 places, 1078 transitions, 55842 flow [2021-08-13 12:46:32,376 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:32,376 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:46:32,376 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] [2021-08-13 12:46:32,376 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-13 12:46:32,376 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:46:32,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:46:32,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1618659668, now seen corresponding path program 26 times [2021-08-13 12:46:32,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:46:32,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909480016] [2021-08-13 12:46:32,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:46:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:46:32,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:32,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:32,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:32,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:32,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:32,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:32,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:32,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:32,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:32,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:32,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:32,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:32,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:32,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:32,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:32,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:32,450 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:46:32,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:46:32,452 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 12:46:32,453 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:46:32,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909480016] [2021-08-13 12:46:32,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909480016] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:46:32,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:46:32,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:46:32,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823737578] [2021-08-13 12:46:32,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:46:32,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:46:32,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:46:32,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:46:32,454 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:46:32,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 1078 transitions, 55842 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:32,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:46:32,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:46:32,455 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:46:36,860 INFO L129 PetriNetUnfolder]: 1654/4255 cut-off events. [2021-08-13 12:46:36,860 INFO L130 PetriNetUnfolder]: For 1827/1827 co-relation queries the response was YES. [2021-08-13 12:46:36,873 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81440 conditions, 4255 events. 1654/4255 cut-off events. For 1827/1827 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 40380 event pairs, 84 based on Foata normal form. 1/4250 useless extension candidates. Maximal degree in co-relation 80566. Up to 2474 conditions per place. [2021-08-13 12:46:36,899 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 666 selfloop transitions, 101 changer transitions 316/1093 dead transitions. [2021-08-13 12:46:36,899 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 1093 transitions, 58788 flow [2021-08-13 12:46:36,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:46:36,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:46:36,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 301 transitions. [2021-08-13 12:46:36,900 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.76010101010101 [2021-08-13 12:46:36,900 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 301 transitions. [2021-08-13 12:46:36,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 301 transitions. [2021-08-13 12:46:36,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:46:36,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 301 transitions. [2021-08-13 12:46:36,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.44444444444444) internal successors, (301), 9 states have internal predecessors, (301), 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 12:46:36,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:36,901 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:36,902 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 198 predicate places. [2021-08-13 12:46:36,902 INFO L482 AbstractCegarLoop]: Abstraction has has 237 places, 1093 transitions, 58788 flow [2021-08-13 12:46:36,902 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:36,902 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:46:36,902 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] [2021-08-13 12:46:36,902 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-13 12:46:36,902 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:46:36,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:46:36,903 INFO L82 PathProgramCache]: Analyzing trace with hash 802891898, now seen corresponding path program 27 times [2021-08-13 12:46:36,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:46:36,903 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951651085] [2021-08-13 12:46:36,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:46:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:46:36,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:36,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:36,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:36,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:36,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:36,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:36,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:36,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:36,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:36,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:36,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:36,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:36,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:36,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:36,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:36,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:36,983 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:46:36,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:46:36,985 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 12:46:36,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:46:36,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951651085] [2021-08-13 12:46:36,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951651085] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:46:36,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:46:36,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:46:36,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610771524] [2021-08-13 12:46:36,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:46:36,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:46:36,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:46:36,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:46:36,986 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:46:36,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 1093 transitions, 58788 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:46:36,986 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:46:36,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:46:36,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:46:41,521 INFO L129 PetriNetUnfolder]: 1674/4327 cut-off events. [2021-08-13 12:46:41,521 INFO L130 PetriNetUnfolder]: For 1913/1913 co-relation queries the response was YES. [2021-08-13 12:46:41,535 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85554 conditions, 4327 events. 1674/4327 cut-off events. For 1913/1913 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 41391 event pairs, 76 based on Foata normal form. 1/4322 useless extension candidates. Maximal degree in co-relation 84647. Up to 2514 conditions per place. [2021-08-13 12:46:41,562 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 727 selfloop transitions, 72 changer transitions 339/1148 dead transitions. [2021-08-13 12:46:41,562 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 1148 transitions, 64094 flow [2021-08-13 12:46:41,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:46:41,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:46:41,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-08-13 12:46:41,563 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7642045454545454 [2021-08-13 12:46:41,564 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-08-13 12:46:41,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-08-13 12:46:41,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:46:41,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-08-13 12:46:41,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.625) internal successors, (269), 8 states have internal predecessors, (269), 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 12:46:41,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:46:41,565 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:46:41,565 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 205 predicate places. [2021-08-13 12:46:41,565 INFO L482 AbstractCegarLoop]: Abstraction has has 244 places, 1148 transitions, 64094 flow [2021-08-13 12:46:41,565 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:46:41,565 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:46:41,565 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] [2021-08-13 12:46:41,566 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-13 12:46:41,566 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:46:41,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:46:41,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1060028758, now seen corresponding path program 28 times [2021-08-13 12:46:41,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:46:41,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478569693] [2021-08-13 12:46:41,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:46:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:46:41,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:41,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:41,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:41,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:41,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:41,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:41,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:41,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:41,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:41,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:41,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:41,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:41,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:41,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:41,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:41,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:41,635 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:46:41,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:46:41,638 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 12:46:41,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:46:41,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478569693] [2021-08-13 12:46:41,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478569693] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:46:41,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:46:41,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:46:41,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399058828] [2021-08-13 12:46:41,638 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:46:41,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:46:41,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:46:41,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:46:41,639 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:46:41,639 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 1148 transitions, 64094 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:46:41,639 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:46:41,639 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:46:41,639 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:46:46,485 INFO L129 PetriNetUnfolder]: 1743/4509 cut-off events. [2021-08-13 12:46:46,486 INFO L130 PetriNetUnfolder]: For 2020/2020 co-relation queries the response was YES. [2021-08-13 12:46:46,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92417 conditions, 4509 events. 1743/4509 cut-off events. For 2020/2020 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 43449 event pairs, 83 based on Foata normal form. 1/4503 useless extension candidates. Maximal degree in co-relation 91481. Up to 2645 conditions per place. [2021-08-13 12:46:46,529 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 791 selfloop transitions, 90 changer transitions 344/1235 dead transitions. [2021-08-13 12:46:46,529 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 1235 transitions, 71436 flow [2021-08-13 12:46:46,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:46:46,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:46:46,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 267 transitions. [2021-08-13 12:46:46,530 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7585227272727273 [2021-08-13 12:46:46,530 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 267 transitions. [2021-08-13 12:46:46,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 267 transitions. [2021-08-13 12:46:46,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:46:46,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 267 transitions. [2021-08-13 12:46:46,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.375) internal successors, (267), 8 states have internal predecessors, (267), 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 12:46:46,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:46:46,531 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:46:46,531 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 212 predicate places. [2021-08-13 12:46:46,531 INFO L482 AbstractCegarLoop]: Abstraction has has 251 places, 1235 transitions, 71436 flow [2021-08-13 12:46:46,531 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:46:46,531 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:46:46,532 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] [2021-08-13 12:46:46,532 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-13 12:46:46,532 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:46:46,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:46:46,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1860646236, now seen corresponding path program 29 times [2021-08-13 12:46:46,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:46:46,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328182489] [2021-08-13 12:46:46,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:46:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:46:46,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:46,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:46,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:46,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:46,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:46,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:46,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:46,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:46,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:46,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:46,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:46,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:46,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:46,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:46,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:46,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:46,597 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:46:46,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:46:46,599 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 12:46:46,599 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:46:46,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328182489] [2021-08-13 12:46:46,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328182489] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:46:46,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:46:46,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:46:46,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255388858] [2021-08-13 12:46:46,599 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:46:46,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:46:46,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:46:46,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:46:46,600 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:46:46,601 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 1235 transitions, 71436 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:46:46,601 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:46:46,601 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:46:46,601 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:46:52,308 INFO L129 PetriNetUnfolder]: 1758/4559 cut-off events. [2021-08-13 12:46:52,309 INFO L130 PetriNetUnfolder]: For 2093/2093 co-relation queries the response was YES. [2021-08-13 12:46:52,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96558 conditions, 4559 events. 1758/4559 cut-off events. For 2093/2093 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 44151 event pairs, 83 based on Foata normal form. 1/4553 useless extension candidates. Maximal degree in co-relation 95608. Up to 2701 conditions per place. [2021-08-13 12:46:52,353 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 829 selfloop transitions, 70 changer transitions 350/1259 dead transitions. [2021-08-13 12:46:52,353 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 1259 transitions, 75326 flow [2021-08-13 12:46:52,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:46:52,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:46:52,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 266 transitions. [2021-08-13 12:46:52,354 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7556818181818182 [2021-08-13 12:46:52,354 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 266 transitions. [2021-08-13 12:46:52,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 266 transitions. [2021-08-13 12:46:52,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:46:52,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 266 transitions. [2021-08-13 12:46:52,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.25) internal successors, (266), 8 states have internal predecessors, (266), 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 12:46:52,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:46:52,355 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:46:52,356 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 219 predicate places. [2021-08-13 12:46:52,356 INFO L482 AbstractCegarLoop]: Abstraction has has 258 places, 1259 transitions, 75326 flow [2021-08-13 12:46:52,356 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:46:52,356 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:46:52,356 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] [2021-08-13 12:46:52,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-13 12:46:52,356 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:46:52,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:46:52,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1040241570, now seen corresponding path program 30 times [2021-08-13 12:46:52,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:46:52,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700149026] [2021-08-13 12:46:52,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:46:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:46:52,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:52,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:52,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:52,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:52,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:52,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:52,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:52,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:52,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:52,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:52,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:52,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:52,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:52,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:52,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:52,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:52,431 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:46:52,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:46:52,434 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 12:46:52,434 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:46:52,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700149026] [2021-08-13 12:46:52,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700149026] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:46:52,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:46:52,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:46:52,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267863350] [2021-08-13 12:46:52,434 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:46:52,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:46:52,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:46:52,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:46:52,435 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:46:52,435 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 1259 transitions, 75326 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:52,435 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:46:52,435 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:46:52,436 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:46:58,042 INFO L129 PetriNetUnfolder]: 1769/4607 cut-off events. [2021-08-13 12:46:58,042 INFO L130 PetriNetUnfolder]: For 2166/2166 co-relation queries the response was YES. [2021-08-13 12:46:58,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100472 conditions, 4607 events. 1769/4607 cut-off events. For 2166/2166 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 44773 event pairs, 86 based on Foata normal form. 1/4601 useless extension candidates. Maximal degree in co-relation 99497. Up to 2725 conditions per place. [2021-08-13 12:46:58,088 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 784 selfloop transitions, 125 changer transitions 357/1276 dead transitions. [2021-08-13 12:46:58,088 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 1276 transitions, 78878 flow [2021-08-13 12:46:58,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:46:58,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:46:58,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 299 transitions. [2021-08-13 12:46:58,089 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2021-08-13 12:46:58,089 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 299 transitions. [2021-08-13 12:46:58,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 299 transitions. [2021-08-13 12:46:58,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:46:58,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 299 transitions. [2021-08-13 12:46:58,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.22222222222222) internal successors, (299), 9 states have internal predecessors, (299), 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 12:46:58,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:58,091 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:46:58,091 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 227 predicate places. [2021-08-13 12:46:58,092 INFO L482 AbstractCegarLoop]: Abstraction has has 266 places, 1276 transitions, 78878 flow [2021-08-13 12:46:58,092 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:58,092 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:46:58,092 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] [2021-08-13 12:46:58,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-13 12:46:58,092 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:46:58,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:46:58,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1477888140, now seen corresponding path program 31 times [2021-08-13 12:46:58,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:46:58,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918545356] [2021-08-13 12:46:58,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:46:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:46:58,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:58,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:58,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:58,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:58,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:58,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:58,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:58,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:58,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:58,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:58,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:58,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:46:58,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:58,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:46:58,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:58,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:46:58,166 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:46:58,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:46:58,169 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 12:46:58,169 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:46:58,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918545356] [2021-08-13 12:46:58,169 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918545356] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:46:58,169 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:46:58,169 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:46:58,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791908189] [2021-08-13 12:46:58,170 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:46:58,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:46:58,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:46:58,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:46:58,170 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:46:58,171 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 1276 transitions, 78878 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:46:58,171 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:46:58,171 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:46:58,171 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:47:03,890 INFO L129 PetriNetUnfolder]: 1792/4668 cut-off events. [2021-08-13 12:47:03,890 INFO L130 PetriNetUnfolder]: For 2238/2238 co-relation queries the response was YES. [2021-08-13 12:47:03,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104969 conditions, 4668 events. 1792/4668 cut-off events. For 2238/2238 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 45549 event pairs, 82 based on Foata normal form. 1/4662 useless extension candidates. Maximal degree in co-relation 103975. Up to 2766 conditions per place. [2021-08-13 12:47:03,943 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 825 selfloop transitions, 106 changer transitions 358/1299 dead transitions. [2021-08-13 12:47:03,944 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 1299 transitions, 82882 flow [2021-08-13 12:47:03,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:47:03,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:47:03,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-08-13 12:47:03,945 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 12:47:03,945 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-08-13 12:47:03,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-08-13 12:47:03,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:47:03,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-08-13 12:47:03,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 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 12:47:03,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:47:03,946 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:47:03,946 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 235 predicate places. [2021-08-13 12:47:03,947 INFO L482 AbstractCegarLoop]: Abstraction has has 274 places, 1299 transitions, 82882 flow [2021-08-13 12:47:03,947 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:47:03,947 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:47:03,947 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] [2021-08-13 12:47:03,947 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-13 12:47:03,947 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:47:03,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:47:03,947 INFO L82 PathProgramCache]: Analyzing trace with hash 71468734, now seen corresponding path program 32 times [2021-08-13 12:47:03,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:47:03,948 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264527987] [2021-08-13 12:47:03,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:47:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:47:03,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:03,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:03,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:03,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:03,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:03,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:47:03,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:03,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:03,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:03,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:47:03,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:03,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:47:03,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:03,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:47:04,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:04,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:04,017 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:47:04,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:47:04,019 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 12:47:04,019 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:47:04,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264527987] [2021-08-13 12:47:04,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264527987] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:47:04,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:47:04,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:47:04,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457711771] [2021-08-13 12:47:04,019 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:47:04,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:47:04,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:47:04,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:47:04,020 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:47:04,020 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 1299 transitions, 82882 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:47:04,020 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:47:04,020 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:47:04,020 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:47:10,435 INFO L129 PetriNetUnfolder]: 1828/4766 cut-off events. [2021-08-13 12:47:10,435 INFO L130 PetriNetUnfolder]: For 2309/2309 co-relation queries the response was YES. [2021-08-13 12:47:10,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110325 conditions, 4766 events. 1828/4766 cut-off events. For 2309/2309 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 46688 event pairs, 83 based on Foata normal form. 1/4760 useless extension candidates. Maximal degree in co-relation 109309. Up to 2830 conditions per place. [2021-08-13 12:47:10,484 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 890 selfloop transitions, 79 changer transitions 359/1338 dead transitions. [2021-08-13 12:47:10,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 1338 transitions, 88034 flow [2021-08-13 12:47:10,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:47:10,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:47:10,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-08-13 12:47:10,485 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 12:47:10,485 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-08-13 12:47:10,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-08-13 12:47:10,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:47:10,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-08-13 12:47:10,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 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 12:47:10,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:47:10,487 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:47:10,487 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 243 predicate places. [2021-08-13 12:47:10,487 INFO L482 AbstractCegarLoop]: Abstraction has has 282 places, 1338 transitions, 88034 flow [2021-08-13 12:47:10,487 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:47:10,487 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:47:10,487 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] [2021-08-13 12:47:10,487 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-13 12:47:10,487 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:47:10,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:47:10,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1077126890, now seen corresponding path program 33 times [2021-08-13 12:47:10,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:47:10,488 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895924578] [2021-08-13 12:47:10,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:47:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:47:10,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:10,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:10,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:10,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:10,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:10,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:47:10,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:10,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:10,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:10,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:47:10,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:10,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:47:10,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:10,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:47:10,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:10,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:10,577 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:47:10,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:47:10,580 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 12:47:10,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:47:10,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895924578] [2021-08-13 12:47:10,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895924578] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:47:10,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:47:10,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 12:47:10,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144034098] [2021-08-13 12:47:10,580 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 12:47:10,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:47:10,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 12:47:10,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 12:47:10,581 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:47:10,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 1338 transitions, 88034 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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 12:47:10,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:47:10,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:47:10,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:47:17,671 INFO L129 PetriNetUnfolder]: 1851/4842 cut-off events. [2021-08-13 12:47:17,671 INFO L130 PetriNetUnfolder]: For 2405/2405 co-relation queries the response was YES. [2021-08-13 12:47:17,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114944 conditions, 4842 events. 1851/4842 cut-off events. For 2405/2405 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 47720 event pairs, 90 based on Foata normal form. 1/4835 useless extension candidates. Maximal degree in co-relation 113886. Up to 2868 conditions per place. [2021-08-13 12:47:17,721 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 815 selfloop transitions, 148 changer transitions 389/1362 dead transitions. [2021-08-13 12:47:17,721 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 1362 transitions, 92322 flow [2021-08-13 12:47:17,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 12:47:17,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 12:47:17,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 330 transitions. [2021-08-13 12:47:17,722 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 12:47:17,722 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 330 transitions. [2021-08-13 12:47:17,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 330 transitions. [2021-08-13 12:47:17,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:47:17,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 330 transitions. [2021-08-13 12:47:17,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 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 12:47:17,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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 12:47:17,724 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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 12:47:17,724 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 252 predicate places. [2021-08-13 12:47:17,724 INFO L482 AbstractCegarLoop]: Abstraction has has 291 places, 1362 transitions, 92322 flow [2021-08-13 12:47:17,724 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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 12:47:17,724 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:47:17,725 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] [2021-08-13 12:47:17,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-13 12:47:17,725 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:47:17,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:47:17,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1826824290, now seen corresponding path program 34 times [2021-08-13 12:47:17,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:47:17,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315918428] [2021-08-13 12:47:17,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:47:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:47:17,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:17,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:17,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:17,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:17,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:17,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:47:17,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:17,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:17,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:17,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:47:17,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:17,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:47:17,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:17,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:47:17,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:17,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:17,792 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:47:17,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:47:17,795 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 12:47:17,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:47:17,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315918428] [2021-08-13 12:47:17,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315918428] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:47:17,795 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:47:17,795 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:47:17,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774124855] [2021-08-13 12:47:17,795 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:47:17,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:47:17,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:47:17,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:47:17,796 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:47:17,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 1362 transitions, 92322 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:47:17,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:47:17,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:47:17,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:47:24,858 INFO L129 PetriNetUnfolder]: 1870/4926 cut-off events. [2021-08-13 12:47:24,858 INFO L130 PetriNetUnfolder]: For 2500/2500 co-relation queries the response was YES. [2021-08-13 12:47:24,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120011 conditions, 4926 events. 1870/4926 cut-off events. For 2500/2500 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 48866 event pairs, 92 based on Foata normal form. 1/4919 useless extension candidates. Maximal degree in co-relation 118920. Up to 2917 conditions per place. [2021-08-13 12:47:25,079 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 902 selfloop transitions, 98 changer transitions 397/1407 dead transitions. [2021-08-13 12:47:25,080 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 1407 transitions, 98176 flow [2021-08-13 12:47:25,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:47:25,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:47:25,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-08-13 12:47:25,081 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-08-13 12:47:25,081 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-08-13 12:47:25,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-08-13 12:47:25,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:47:25,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-08-13 12:47:25,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.111111111111114) internal successors, (298), 9 states have internal predecessors, (298), 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 12:47:25,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:47:25,082 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:47:25,082 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 260 predicate places. [2021-08-13 12:47:25,082 INFO L482 AbstractCegarLoop]: Abstraction has has 299 places, 1407 transitions, 98176 flow [2021-08-13 12:47:25,082 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:47:25,082 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:47:25,083 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] [2021-08-13 12:47:25,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-13 12:47:25,083 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:47:25,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:47:25,083 INFO L82 PathProgramCache]: Analyzing trace with hash -879345990, now seen corresponding path program 35 times [2021-08-13 12:47:25,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:47:25,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596635911] [2021-08-13 12:47:25,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:47:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:47:25,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:25,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:25,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:25,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:25,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:25,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:47:25,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:25,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:25,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:25,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:47:25,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:25,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:25,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:25,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:25,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:25,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:25,158 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:47:25,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:47:25,161 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 12:47:25,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:47:25,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596635911] [2021-08-13 12:47:25,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596635911] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:47:25,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:47:25,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:47:25,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383815237] [2021-08-13 12:47:25,162 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:47:25,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:47:25,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:47:25,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:47:25,163 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:47:25,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 1407 transitions, 98176 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:47:25,164 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:47:25,164 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:47:25,164 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:47:33,785 INFO L129 PetriNetUnfolder]: 1889/5003 cut-off events. [2021-08-13 12:47:33,785 INFO L130 PetriNetUnfolder]: For 2606/2606 co-relation queries the response was YES. [2021-08-13 12:47:33,803 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124737 conditions, 5003 events. 1889/5003 cut-off events. For 2606/2606 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 49990 event pairs, 100 based on Foata normal form. 1/4997 useless extension candidates. Maximal degree in co-relation 123595. Up to 2953 conditions per place. [2021-08-13 12:47:33,841 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 884 selfloop transitions, 137 changer transitions 397/1428 dead transitions. [2021-08-13 12:47:33,842 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 1428 transitions, 102507 flow [2021-08-13 12:47:33,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:47:33,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:47:33,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 302 transitions. [2021-08-13 12:47:33,843 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7626262626262627 [2021-08-13 12:47:33,843 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 302 transitions. [2021-08-13 12:47:33,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 302 transitions. [2021-08-13 12:47:33,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:47:33,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 302 transitions. [2021-08-13 12:47:33,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.55555555555556) internal successors, (302), 9 states have internal predecessors, (302), 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 12:47:33,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:47:33,844 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:47:33,844 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 268 predicate places. [2021-08-13 12:47:33,844 INFO L482 AbstractCegarLoop]: Abstraction has has 307 places, 1428 transitions, 102507 flow [2021-08-13 12:47:33,844 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:47:33,844 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:47:33,845 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] [2021-08-13 12:47:33,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-13 12:47:33,845 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:47:33,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:47:33,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1908959384, now seen corresponding path program 36 times [2021-08-13 12:47:33,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:47:33,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777347536] [2021-08-13 12:47:33,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:47:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:47:33,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:33,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:33,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:33,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:33,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:33,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:47:33,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:33,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:33,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:33,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:47:33,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:33,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:47:33,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:33,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:47:33,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:33,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:33,922 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:47:33,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:47:33,925 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 12:47:33,925 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:47:33,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777347536] [2021-08-13 12:47:33,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777347536] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:47:33,925 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:47:33,925 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:47:33,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647734398] [2021-08-13 12:47:33,928 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:47:33,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:47:33,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:47:33,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:47:33,930 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:47:33,930 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 1428 transitions, 102507 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:47:33,930 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:47:33,930 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:47:33,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:47:42,267 INFO L129 PetriNetUnfolder]: 1912/5098 cut-off events. [2021-08-13 12:47:42,268 INFO L130 PetriNetUnfolder]: For 2712/2712 co-relation queries the response was YES. [2021-08-13 12:47:42,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 130040 conditions, 5098 events. 1912/5098 cut-off events. For 2712/2712 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 51388 event pairs, 97 based on Foata normal form. 1/5089 useless extension candidates. Maximal degree in co-relation 128860. Up to 3003 conditions per place. [2021-08-13 12:47:42,322 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 953 selfloop transitions, 104 changer transitions 398/1465 dead transitions. [2021-08-13 12:47:42,322 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 1465 transitions, 108081 flow [2021-08-13 12:47:42,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:47:42,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:47:42,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 296 transitions. [2021-08-13 12:47:42,323 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7474747474747475 [2021-08-13 12:47:42,323 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 296 transitions. [2021-08-13 12:47:42,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 296 transitions. [2021-08-13 12:47:42,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:47:42,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 296 transitions. [2021-08-13 12:47:42,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.888888888888886) internal successors, (296), 9 states have internal predecessors, (296), 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 12:47:42,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:47:42,324 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:47:42,325 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 276 predicate places. [2021-08-13 12:47:42,325 INFO L482 AbstractCegarLoop]: Abstraction has has 315 places, 1465 transitions, 108081 flow [2021-08-13 12:47:42,325 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:47:42,325 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:47:42,325 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] [2021-08-13 12:47:42,325 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-13 12:47:42,325 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:47:42,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:47:42,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1917158512, now seen corresponding path program 37 times [2021-08-13 12:47:42,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:47:42,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491325430] [2021-08-13 12:47:42,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:47:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:47:42,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:42,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:42,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:42,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:42,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:42,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:47:42,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:42,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:42,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:42,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:47:42,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:42,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:47:42,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:42,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:47:42,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:42,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:42,394 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:47:42,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:47:42,397 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 12:47:42,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:47:42,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491325430] [2021-08-13 12:47:42,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491325430] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:47:42,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:47:42,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:47:42,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068117552] [2021-08-13 12:47:42,398 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:47:42,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:47:42,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:47:42,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:47:42,398 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:47:42,398 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 1465 transitions, 108081 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:47:42,398 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:47:42,398 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:47:42,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:47:51,393 INFO L129 PetriNetUnfolder]: 1947/5204 cut-off events. [2021-08-13 12:47:51,393 INFO L130 PetriNetUnfolder]: For 2799/2799 co-relation queries the response was YES. [2021-08-13 12:47:51,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136142 conditions, 5204 events. 1947/5204 cut-off events. For 2799/2799 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 52745 event pairs, 97 based on Foata normal form. 1/5195 useless extension candidates. Maximal degree in co-relation 134952. Up to 3072 conditions per place. [2021-08-13 12:47:51,455 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1019 selfloop transitions, 83 changer transitions 401/1513 dead transitions. [2021-08-13 12:47:51,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 1513 transitions, 114639 flow [2021-08-13 12:47:51,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:47:51,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:47:51,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-08-13 12:47:51,457 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 12:47:51,457 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-08-13 12:47:51,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-08-13 12:47:51,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:47:51,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-08-13 12:47:51,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 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 12:47:51,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:47:51,457 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:47:51,458 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 284 predicate places. [2021-08-13 12:47:51,458 INFO L482 AbstractCegarLoop]: Abstraction has has 323 places, 1513 transitions, 114639 flow [2021-08-13 12:47:51,458 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:47:51,458 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:47:51,458 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] [2021-08-13 12:47:51,458 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-13 12:47:51,458 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:47:51,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:47:51,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1004688822, now seen corresponding path program 38 times [2021-08-13 12:47:51,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:47:51,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740269908] [2021-08-13 12:47:51,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:47:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:47:51,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:51,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:51,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:51,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:51,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:51,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:47:51,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:51,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:51,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:51,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:47:51,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:51,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:47:51,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:51,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:47:51,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:47:51,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:47:51,525 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:47:51,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:47:51,527 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 12:47:51,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:47:51,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740269908] [2021-08-13 12:47:51,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740269908] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:47:51,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:47:51,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:47:51,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459335293] [2021-08-13 12:47:51,528 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:47:51,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:47:51,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:47:51,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:47:51,529 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:47:51,529 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 1513 transitions, 114639 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:47:51,529 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:47:51,529 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:47:51,529 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:48:02,278 INFO L129 PetriNetUnfolder]: 1965/5292 cut-off events. [2021-08-13 12:48:02,278 INFO L130 PetriNetUnfolder]: For 2899/2899 co-relation queries the response was YES. [2021-08-13 12:48:02,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141468 conditions, 5292 events. 1965/5292 cut-off events. For 2899/2899 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 54059 event pairs, 98 based on Foata normal form. 1/5283 useless extension candidates. Maximal degree in co-relation 140235. Up to 3117 conditions per place. [2021-08-13 12:48:02,431 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 991 selfloop transitions, 141 changer transitions 410/1552 dead transitions. [2021-08-13 12:48:02,431 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 1552 transitions, 120687 flow [2021-08-13 12:48:02,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:48:02,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:48:02,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-08-13 12:48:02,432 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-08-13 12:48:02,432 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-08-13 12:48:02,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-08-13 12:48:02,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:48:02,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-08-13 12:48:02,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.111111111111114) internal successors, (298), 9 states have internal predecessors, (298), 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 12:48:02,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:48:02,433 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:48:02,433 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 292 predicate places. [2021-08-13 12:48:02,433 INFO L482 AbstractCegarLoop]: Abstraction has has 331 places, 1552 transitions, 120687 flow [2021-08-13 12:48:02,433 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:48:02,434 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:48:02,434 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] [2021-08-13 12:48:02,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-08-13 12:48:02,434 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:48:02,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:48:02,434 INFO L82 PathProgramCache]: Analyzing trace with hash 537517516, now seen corresponding path program 39 times [2021-08-13 12:48:02,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:48:02,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571656837] [2021-08-13 12:48:02,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:48:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:48:02,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:02,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:48:02,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:02,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:48:02,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:02,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:48:02,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:02,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:48:02,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:02,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:48:02,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:02,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:48:02,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:02,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:48:02,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:02,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:48:02,521 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:48:02,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:48:02,523 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 12:48:02,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:48:02,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571656837] [2021-08-13 12:48:02,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571656837] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:48:02,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:48:02,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 12:48:02,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748158431] [2021-08-13 12:48:02,524 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 12:48:02,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:48:02,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 12:48:02,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 12:48:02,524 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:48:02,525 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 1552 transitions, 120687 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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 12:48:02,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:48:02,525 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:48:02,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:48:15,526 INFO L129 PetriNetUnfolder]: 1967/5319 cut-off events. [2021-08-13 12:48:15,527 INFO L130 PetriNetUnfolder]: For 2995/2995 co-relation queries the response was YES. [2021-08-13 12:48:15,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145368 conditions, 5319 events. 1967/5319 cut-off events. For 2995/2995 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 54497 event pairs, 98 based on Foata normal form. 1/5310 useless extension candidates. Maximal degree in co-relation 144100. Up to 3125 conditions per place. [2021-08-13 12:48:15,590 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 945 selfloop transitions, 166 changer transitions 439/1560 dead transitions. [2021-08-13 12:48:15,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 1560 transitions, 124411 flow [2021-08-13 12:48:15,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 12:48:15,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 12:48:15,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 333 transitions. [2021-08-13 12:48:15,591 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7568181818181818 [2021-08-13 12:48:15,591 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 333 transitions. [2021-08-13 12:48:15,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 333 transitions. [2021-08-13 12:48:15,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:48:15,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 333 transitions. [2021-08-13 12:48:15,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.3) internal successors, (333), 10 states have internal predecessors, (333), 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 12:48:15,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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 12:48:15,593 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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 12:48:15,593 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 301 predicate places. [2021-08-13 12:48:15,593 INFO L482 AbstractCegarLoop]: Abstraction has has 340 places, 1560 transitions, 124411 flow [2021-08-13 12:48:15,593 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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 12:48:15,593 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:48:15,593 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] [2021-08-13 12:48:15,593 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-13 12:48:15,593 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:48:15,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:48:15,594 INFO L82 PathProgramCache]: Analyzing trace with hash 266684192, now seen corresponding path program 40 times [2021-08-13 12:48:15,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:48:15,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108171537] [2021-08-13 12:48:15,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:48:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:48:15,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:15,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:48:15,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:15,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:48:15,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:15,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:48:15,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:15,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:48:15,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:15,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:48:15,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:15,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:48:15,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:15,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:48:15,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:15,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:48:15,683 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:48:15,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:48:15,685 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 12:48:15,686 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:48:15,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108171537] [2021-08-13 12:48:15,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108171537] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:48:15,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:48:15,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 12:48:15,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433681978] [2021-08-13 12:48:15,686 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 12:48:15,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:48:15,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 12:48:15,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 12:48:15,688 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:48:15,689 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 1560 transitions, 124411 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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 12:48:15,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:48:15,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:48:15,689 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:48:27,481 INFO L129 PetriNetUnfolder]: 1973/5363 cut-off events. [2021-08-13 12:48:27,481 INFO L130 PetriNetUnfolder]: For 3096/3096 co-relation queries the response was YES. [2021-08-13 12:48:27,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149908 conditions, 5363 events. 1973/5363 cut-off events. For 3096/3096 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 55158 event pairs, 97 based on Foata normal form. 1/5353 useless extension candidates. Maximal degree in co-relation 148623. Up to 3148 conditions per place. [2021-08-13 12:48:27,547 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1015 selfloop transitions, 106 changer transitions 452/1583 dead transitions. [2021-08-13 12:48:27,547 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 1583 transitions, 129397 flow [2021-08-13 12:48:27,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 12:48:27,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 12:48:27,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 330 transitions. [2021-08-13 12:48:27,548 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 12:48:27,548 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 330 transitions. [2021-08-13 12:48:27,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 330 transitions. [2021-08-13 12:48:27,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:48:27,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 330 transitions. [2021-08-13 12:48:27,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 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 12:48:27,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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 12:48:27,549 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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 12:48:27,550 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 310 predicate places. [2021-08-13 12:48:27,550 INFO L482 AbstractCegarLoop]: Abstraction has has 349 places, 1583 transitions, 129397 flow [2021-08-13 12:48:27,550 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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 12:48:27,550 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:48:27,550 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] [2021-08-13 12:48:27,550 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-13 12:48:27,550 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:48:27,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:48:27,550 INFO L82 PathProgramCache]: Analyzing trace with hash -675565692, now seen corresponding path program 41 times [2021-08-13 12:48:27,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:48:27,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006131502] [2021-08-13 12:48:27,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:48:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:48:27,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:27,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:48:27,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:27,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:48:27,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:27,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:48:27,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:27,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:48:27,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:27,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:48:27,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:27,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:48:27,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:27,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:48:27,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:27,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:48:27,630 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:48:27,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:48:27,632 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 12:48:27,632 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:48:27,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006131502] [2021-08-13 12:48:27,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006131502] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:48:27,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:48:27,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 12:48:27,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583062366] [2021-08-13 12:48:27,633 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 12:48:27,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:48:27,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 12:48:27,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 12:48:27,633 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:48:27,634 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 1583 transitions, 129397 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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 12:48:27,634 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:48:27,634 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:48:27,634 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:48:40,166 INFO L129 PetriNetUnfolder]: 1974/5400 cut-off events. [2021-08-13 12:48:40,167 INFO L130 PetriNetUnfolder]: For 3188/3188 co-relation queries the response was YES. [2021-08-13 12:48:40,187 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154113 conditions, 5400 events. 1974/5400 cut-off events. For 3188/3188 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 55771 event pairs, 98 based on Foata normal form. 1/5391 useless extension candidates. Maximal degree in co-relation 152805. Up to 3162 conditions per place. [2021-08-13 12:48:40,232 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 962 selfloop transitions, 141 changer transitions 512/1625 dead transitions. [2021-08-13 12:48:40,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 1625 transitions, 136071 flow [2021-08-13 12:48:40,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 12:48:40,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 12:48:40,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 331 transitions. [2021-08-13 12:48:40,234 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7522727272727273 [2021-08-13 12:48:40,234 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 331 transitions. [2021-08-13 12:48:40,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 331 transitions. [2021-08-13 12:48:40,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:48:40,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 331 transitions. [2021-08-13 12:48:40,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.1) internal successors, (331), 10 states have internal predecessors, (331), 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 12:48:40,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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 12:48:40,235 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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 12:48:40,235 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 319 predicate places. [2021-08-13 12:48:40,235 INFO L482 AbstractCegarLoop]: Abstraction has has 358 places, 1625 transitions, 136071 flow [2021-08-13 12:48:40,235 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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 12:48:40,235 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:48:40,236 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] [2021-08-13 12:48:40,236 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-08-13 12:48:40,236 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:48:40,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:48:40,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1225973418, now seen corresponding path program 42 times [2021-08-13 12:48:40,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:48:40,236 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104518763] [2021-08-13 12:48:40,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:48:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:48:40,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:40,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:48:40,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:40,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:48:40,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:40,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:48:40,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:40,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:48:40,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:40,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:48:40,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:40,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:48:40,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:40,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:48:40,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:40,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:48:40,312 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:48:40,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:48:40,315 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 12:48:40,315 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:48:40,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104518763] [2021-08-13 12:48:40,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104518763] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:48:40,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:48:40,315 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:48:40,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718319095] [2021-08-13 12:48:40,316 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:48:40,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:48:40,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:48:40,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:48:40,316 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:48:40,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 1625 transitions, 136071 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:48:40,317 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:48:40,317 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:48:40,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:48:53,102 INFO L129 PetriNetUnfolder]: 1976/5421 cut-off events. [2021-08-13 12:48:53,102 INFO L130 PetriNetUnfolder]: For 3289/3289 co-relation queries the response was YES. [2021-08-13 12:48:53,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158032 conditions, 5421 events. 1976/5421 cut-off events. For 3289/3289 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 56168 event pairs, 98 based on Foata normal form. 1/5412 useless extension candidates. Maximal degree in co-relation 156692. Up to 3169 conditions per place. [2021-08-13 12:48:53,173 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 990 selfloop transitions, 120 changer transitions 519/1639 dead transitions. [2021-08-13 12:48:53,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 1639 transitions, 140505 flow [2021-08-13 12:48:53,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:48:53,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:48:53,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 299 transitions. [2021-08-13 12:48:53,174 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2021-08-13 12:48:53,174 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 299 transitions. [2021-08-13 12:48:53,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 299 transitions. [2021-08-13 12:48:53,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:48:53,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 299 transitions. [2021-08-13 12:48:53,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.22222222222222) internal successors, (299), 9 states have internal predecessors, (299), 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 12:48:53,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:48:53,175 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:48:53,176 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 327 predicate places. [2021-08-13 12:48:53,176 INFO L482 AbstractCegarLoop]: Abstraction has has 366 places, 1639 transitions, 140505 flow [2021-08-13 12:48:53,176 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:48:53,176 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:48:53,176 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] [2021-08-13 12:48:53,176 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-08-13 12:48:53,176 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:48:53,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:48:53,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1571260094, now seen corresponding path program 43 times [2021-08-13 12:48:53,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:48:53,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803720563] [2021-08-13 12:48:53,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:48:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:48:53,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:53,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:48:53,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:53,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:48:53,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:53,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:48:53,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:53,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:48:53,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:53,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:48:53,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:53,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:48:53,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:53,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:48:53,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:48:53,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:48:53,263 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:48:53,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:48:53,265 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 12:48:53,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:48:53,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803720563] [2021-08-13 12:48:53,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803720563] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:48:53,266 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:48:53,266 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 12:48:53,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699964933] [2021-08-13 12:48:53,266 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 12:48:53,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:48:53,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 12:48:53,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 12:48:53,267 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:48:53,267 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 1639 transitions, 140505 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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 12:48:53,267 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:48:53,267 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:48:53,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:49:06,047 INFO L129 PetriNetUnfolder]: 1980/5453 cut-off events. [2021-08-13 12:49:06,048 INFO L130 PetriNetUnfolder]: For 3392/3392 co-relation queries the response was YES. [2021-08-13 12:49:06,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162281 conditions, 5453 events. 1980/5453 cut-off events. For 3392/3392 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 56611 event pairs, 102 based on Foata normal form. 1/5443 useless extension candidates. Maximal degree in co-relation 160931. Up to 3183 conditions per place. [2021-08-13 12:49:06,125 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 954 selfloop transitions, 163 changer transitions 526/1653 dead transitions. [2021-08-13 12:49:06,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 1653 transitions, 144995 flow [2021-08-13 12:49:06,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 12:49:06,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 12:49:06,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 329 transitions. [2021-08-13 12:49:06,126 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7477272727272727 [2021-08-13 12:49:06,126 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 329 transitions. [2021-08-13 12:49:06,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 329 transitions. [2021-08-13 12:49:06,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:49:06,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 329 transitions. [2021-08-13 12:49:06,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.9) internal successors, (329), 10 states have internal predecessors, (329), 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 12:49:06,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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 12:49:06,127 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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 12:49:06,127 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 336 predicate places. [2021-08-13 12:49:06,127 INFO L482 AbstractCegarLoop]: Abstraction has has 375 places, 1653 transitions, 144995 flow [2021-08-13 12:49:06,128 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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 12:49:06,128 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:49:06,128 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] [2021-08-13 12:49:06,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-08-13 12:49:06,128 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:49:06,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:49:06,128 INFO L82 PathProgramCache]: Analyzing trace with hash -913927208, now seen corresponding path program 44 times [2021-08-13 12:49:06,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:49:06,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219086419] [2021-08-13 12:49:06,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:49:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:49:06,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:06,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:49:06,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:06,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:49:06,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:06,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:49:06,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:06,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:49:06,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:06,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:49:06,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:06,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:49:06,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:06,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:49:06,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:06,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:49:06,195 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:49:06,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:49:06,197 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 12:49:06,198 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:49:06,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219086419] [2021-08-13 12:49:06,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219086419] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:49:06,198 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:49:06,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:49:06,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199838297] [2021-08-13 12:49:06,199 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:49:06,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:49:06,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:49:06,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:49:06,200 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:49:06,200 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 1653 transitions, 144995 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:49:06,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:49:06,200 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:49:06,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:49:19,439 INFO L129 PetriNetUnfolder]: 1990/5499 cut-off events. [2021-08-13 12:49:19,439 INFO L130 PetriNetUnfolder]: For 3499/3499 co-relation queries the response was YES. [2021-08-13 12:49:19,461 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166967 conditions, 5499 events. 1990/5499 cut-off events. For 3499/3499 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 57363 event pairs, 102 based on Foata normal form. 1/5489 useless extension candidates. Maximal degree in co-relation 165596. Up to 3206 conditions per place. [2021-08-13 12:49:19,509 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1049 selfloop transitions, 74 changer transitions 539/1672 dead transitions. [2021-08-13 12:49:19,509 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 1672 transitions, 149991 flow [2021-08-13 12:49:19,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:49:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:49:19,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-08-13 12:49:19,514 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7642045454545454 [2021-08-13 12:49:19,514 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-08-13 12:49:19,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-08-13 12:49:19,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:49:19,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-08-13 12:49:19,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.625) internal successors, (269), 8 states have internal predecessors, (269), 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 12:49:19,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:49:19,516 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:49:19,516 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 343 predicate places. [2021-08-13 12:49:19,516 INFO L482 AbstractCegarLoop]: Abstraction has has 382 places, 1672 transitions, 149991 flow [2021-08-13 12:49:19,516 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:49:19,516 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:49:19,516 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] [2021-08-13 12:49:19,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-08-13 12:49:19,516 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:49:19,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:49:19,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1203032748, now seen corresponding path program 45 times [2021-08-13 12:49:19,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:49:19,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736833637] [2021-08-13 12:49:19,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:49:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:49:19,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:19,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:49:19,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:19,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:49:19,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:19,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:49:19,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:19,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:49:19,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:19,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:49:19,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:19,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:49:19,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:19,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:49:19,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:19,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:49:19,583 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:49:19,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:49:19,585 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 12:49:19,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:49:19,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736833637] [2021-08-13 12:49:19,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736833637] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:49:19,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:49:19,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:49:19,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267757494] [2021-08-13 12:49:19,586 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:49:19,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:49:19,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:49:19,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:49:19,587 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:49:19,587 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 1672 transitions, 149991 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:49:19,587 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:49:19,587 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:49:19,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:49:33,063 INFO L129 PetriNetUnfolder]: 1991/5516 cut-off events. [2021-08-13 12:49:33,063 INFO L130 PetriNetUnfolder]: For 3596/3596 co-relation queries the response was YES. [2021-08-13 12:49:33,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170902 conditions, 5516 events. 1991/5516 cut-off events. For 3596/3596 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 57603 event pairs, 102 based on Foata normal form. 1/5507 useless extension candidates. Maximal degree in co-relation 169499. Up to 3212 conditions per place. [2021-08-13 12:49:33,131 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 984 selfloop transitions, 145 changer transitions 539/1678 dead transitions. [2021-08-13 12:49:33,131 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 1678 transitions, 153867 flow [2021-08-13 12:49:33,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:49:33,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:49:33,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 301 transitions. [2021-08-13 12:49:33,132 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.76010101010101 [2021-08-13 12:49:33,133 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 301 transitions. [2021-08-13 12:49:33,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 301 transitions. [2021-08-13 12:49:33,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:49:33,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 301 transitions. [2021-08-13 12:49:33,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.44444444444444) internal successors, (301), 9 states have internal predecessors, (301), 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 12:49:33,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:49:33,134 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:49:33,134 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 351 predicate places. [2021-08-13 12:49:33,134 INFO L482 AbstractCegarLoop]: Abstraction has has 390 places, 1678 transitions, 153867 flow [2021-08-13 12:49:33,134 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:49:33,134 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:49:33,134 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] [2021-08-13 12:49:33,134 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-08-13 12:49:33,134 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:49:33,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:49:33,135 INFO L82 PathProgramCache]: Analyzing trace with hash 525432470, now seen corresponding path program 46 times [2021-08-13 12:49:33,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:49:33,135 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305968321] [2021-08-13 12:49:33,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:49:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:49:33,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:33,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:49:33,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:33,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:49:33,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:33,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:49:33,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:33,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:49:33,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:33,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:49:33,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:33,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:49:33,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:33,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:49:33,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:33,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:49:33,213 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:49:33,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:49:33,216 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 12:49:33,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:49:33,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305968321] [2021-08-13 12:49:33,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305968321] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:49:33,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:49:33,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 12:49:33,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794544948] [2021-08-13 12:49:33,217 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 12:49:33,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:49:33,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 12:49:33,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 12:49:33,218 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:49:33,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 1678 transitions, 153867 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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 12:49:33,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:49:33,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:49:33,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:49:47,018 INFO L129 PetriNetUnfolder]: 1992/5531 cut-off events. [2021-08-13 12:49:47,018 INFO L130 PetriNetUnfolder]: For 3698/3698 co-relation queries the response was YES. [2021-08-13 12:49:47,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 174799 conditions, 5531 events. 1992/5531 cut-off events. For 3698/3698 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 57815 event pairs, 102 based on Foata normal form. 1/5521 useless extension candidates. Maximal degree in co-relation 173393. Up to 3217 conditions per place. [2021-08-13 12:49:47,089 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 925 selfloop transitions, 168 changer transitions 580/1683 dead transitions. [2021-08-13 12:49:47,090 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 1683 transitions, 157673 flow [2021-08-13 12:49:47,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 12:49:47,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 12:49:47,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 332 transitions. [2021-08-13 12:49:47,091 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7545454545454545 [2021-08-13 12:49:47,091 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 332 transitions. [2021-08-13 12:49:47,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 332 transitions. [2021-08-13 12:49:47,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:49:47,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 332 transitions. [2021-08-13 12:49:47,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.2) internal successors, (332), 10 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 12:49:47,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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 12:49:47,092 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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 12:49:47,092 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 360 predicate places. [2021-08-13 12:49:47,092 INFO L482 AbstractCegarLoop]: Abstraction has has 399 places, 1683 transitions, 157673 flow [2021-08-13 12:49:47,092 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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 12:49:47,093 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:49:47,093 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] [2021-08-13 12:49:47,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-08-13 12:49:47,093 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:49:47,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:49:47,093 INFO L82 PathProgramCache]: Analyzing trace with hash -331082602, now seen corresponding path program 47 times [2021-08-13 12:49:47,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:49:47,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163614576] [2021-08-13 12:49:47,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:49:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:49:47,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:47,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:49:47,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:47,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:49:47,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:47,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:49:47,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:47,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:49:47,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:47,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:49:47,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:47,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:49:47,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:47,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:49:47,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:49:47,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:49:47,161 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:49:47,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:49:47,164 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 12:49:47,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:49:47,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163614576] [2021-08-13 12:49:47,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163614576] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:49:47,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:49:47,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:49:47,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702668357] [2021-08-13 12:49:47,165 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:49:47,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:49:47,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:49:47,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:49:47,165 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:49:47,166 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 1683 transitions, 157673 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:49:47,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:49:47,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:49:47,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:01,776 INFO L129 PetriNetUnfolder]: 1995/5560 cut-off events. [2021-08-13 12:50:01,776 INFO L130 PetriNetUnfolder]: For 3801/3801 co-relation queries the response was YES. [2021-08-13 12:50:01,801 INFO L84 FinitePrefix]: Finished finitePrefix Result has 179189 conditions, 5560 events. 1995/5560 cut-off events. For 3801/3801 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 58329 event pairs, 102 based on Foata normal form. 1/5549 useless extension candidates. Maximal degree in co-relation 177770. Up to 3232 conditions per place. [2021-08-13 12:50:01,850 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 976 selfloop transitions, 111 changer transitions 601/1698 dead transitions. [2021-08-13 12:50:01,850 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 1698 transitions, 162459 flow [2021-08-13 12:50:01,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:50:01,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:50:01,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 301 transitions. [2021-08-13 12:50:01,851 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.76010101010101 [2021-08-13 12:50:01,851 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 301 transitions. [2021-08-13 12:50:01,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 301 transitions. [2021-08-13 12:50:01,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:01,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 301 transitions. [2021-08-13 12:50:01,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.44444444444444) internal successors, (301), 9 states have internal predecessors, (301), 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 12:50:01,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:50:01,852 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:50:01,852 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 368 predicate places. [2021-08-13 12:50:01,852 INFO L482 AbstractCegarLoop]: Abstraction has has 407 places, 1698 transitions, 162459 flow [2021-08-13 12:50:01,852 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:50:01,852 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:01,852 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] [2021-08-13 12:50:01,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-08-13 12:50:01,852 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:01,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:01,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1896213522, now seen corresponding path program 48 times [2021-08-13 12:50:01,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:01,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120356605] [2021-08-13 12:50:01,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:01,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:01,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:01,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:01,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:01,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:01,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:50:01,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:01,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:01,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:01,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:50:01,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:01,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:50:01,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:01,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:50:01,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:01,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:01,949 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:50:01,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:50:01,951 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 12:50:01,952 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:01,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120356605] [2021-08-13 12:50:01,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120356605] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:01,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:01,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 12:50:01,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031487521] [2021-08-13 12:50:01,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 12:50:01,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:01,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 12:50:01,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 12:50:01,953 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:50:01,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 1698 transitions, 162459 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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 12:50:01,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:01,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:50:01,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:16,374 INFO L129 PetriNetUnfolder]: 1997/5592 cut-off events. [2021-08-13 12:50:16,374 INFO L130 PetriNetUnfolder]: For 3919/3919 co-relation queries the response was YES. [2021-08-13 12:50:16,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 183336 conditions, 5592 events. 1997/5592 cut-off events. For 3919/3919 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 58855 event pairs, 102 based on Foata normal form. 1/5581 useless extension candidates. Maximal degree in co-relation 181873. Up to 3241 conditions per place. [2021-08-13 12:50:16,449 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 976 selfloop transitions, 97 changer transitions 624/1707 dead transitions. [2021-08-13 12:50:16,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 1707 transitions, 166717 flow [2021-08-13 12:50:16,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 12:50:16,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 12:50:16,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 330 transitions. [2021-08-13 12:50:16,450 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 12:50:16,450 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 330 transitions. [2021-08-13 12:50:16,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 330 transitions. [2021-08-13 12:50:16,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:16,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 330 transitions. [2021-08-13 12:50:16,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 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 12:50:16,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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 12:50:16,451 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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 12:50:16,451 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 377 predicate places. [2021-08-13 12:50:16,451 INFO L482 AbstractCegarLoop]: Abstraction has has 416 places, 1707 transitions, 166717 flow [2021-08-13 12:50:16,451 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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 12:50:16,451 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:16,451 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] [2021-08-13 12:50:16,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-08-13 12:50:16,451 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:16,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:16,451 INFO L82 PathProgramCache]: Analyzing trace with hash 417293454, now seen corresponding path program 49 times [2021-08-13 12:50:16,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:16,452 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923894586] [2021-08-13 12:50:16,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:16,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:16,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:16,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:16,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:16,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:16,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:50:16,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:16,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:16,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:16,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:50:16,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:16,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:50:16,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:16,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:50:16,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:16,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:16,539 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:50:16,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:50:16,545 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 12:50:16,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:16,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923894586] [2021-08-13 12:50:16,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923894586] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:16,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:16,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 12:50:16,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242279268] [2021-08-13 12:50:16,546 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 12:50:16,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:16,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 12:50:16,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 12:50:16,547 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:50:16,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 1707 transitions, 166717 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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 12:50:16,547 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:16,547 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:50:16,547 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:32,048 INFO L129 PetriNetUnfolder]: 2000/5635 cut-off events. [2021-08-13 12:50:32,049 INFO L130 PetriNetUnfolder]: For 4041/4041 co-relation queries the response was YES. [2021-08-13 12:50:32,076 INFO L84 FinitePrefix]: Finished finitePrefix Result has 187856 conditions, 5635 events. 2000/5635 cut-off events. For 4041/4041 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 59603 event pairs, 107 based on Foata normal form. 1/5624 useless extension candidates. Maximal degree in co-relation 186362. Up to 3257 conditions per place. [2021-08-13 12:50:32,133 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 926 selfloop transitions, 134 changer transitions 653/1723 dead transitions. [2021-08-13 12:50:32,133 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 1723 transitions, 171711 flow [2021-08-13 12:50:32,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 12:50:32,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 12:50:32,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 331 transitions. [2021-08-13 12:50:32,134 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7522727272727273 [2021-08-13 12:50:32,134 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 331 transitions. [2021-08-13 12:50:32,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 331 transitions. [2021-08-13 12:50:32,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:32,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 331 transitions. [2021-08-13 12:50:32,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.1) internal successors, (331), 10 states have internal predecessors, (331), 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 12:50:32,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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 12:50:32,135 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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 12:50:32,135 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 386 predicate places. [2021-08-13 12:50:32,135 INFO L482 AbstractCegarLoop]: Abstraction has has 425 places, 1723 transitions, 171711 flow [2021-08-13 12:50:32,135 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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 12:50:32,135 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:32,135 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] [2021-08-13 12:50:32,136 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-08-13 12:50:32,136 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:32,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:32,136 INFO L82 PathProgramCache]: Analyzing trace with hash 2002461008, now seen corresponding path program 50 times [2021-08-13 12:50:32,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:32,136 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286115465] [2021-08-13 12:50:32,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:32,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:32,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:32,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:32,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:32,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:32,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:50:32,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:32,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:50:32,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:32,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:50:32,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:32,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:32,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:32,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:32,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:32,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:32,187 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:50:32,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:50:32,189 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 12:50:32,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:32,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286115465] [2021-08-13 12:50:32,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286115465] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:32,189 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:32,190 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:50:32,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953195794] [2021-08-13 12:50:32,191 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:50:32,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:32,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:50:32,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:50:32,192 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:50:32,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 1723 transitions, 171711 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 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 12:50:32,192 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:32,192 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:50:32,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:48,156 INFO L129 PetriNetUnfolder]: 2023/5703 cut-off events. [2021-08-13 12:50:48,156 INFO L130 PetriNetUnfolder]: For 4175/4175 co-relation queries the response was YES. [2021-08-13 12:50:48,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193494 conditions, 5703 events. 2023/5703 cut-off events. For 4175/4175 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 60449 event pairs, 75 based on Foata normal form. 1/5692 useless extension candidates. Maximal degree in co-relation 191968. Up to 3429 conditions per place. [2021-08-13 12:50:48,230 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1046 selfloop transitions, 28 changer transitions 658/1742 dead transitions. [2021-08-13 12:50:48,230 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 1742 transitions, 177095 flow [2021-08-13 12:50:48,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:50:48,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:50:48,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 235 transitions. [2021-08-13 12:50:48,231 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.762987012987013 [2021-08-13 12:50:48,231 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 235 transitions. [2021-08-13 12:50:48,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 235 transitions. [2021-08-13 12:50:48,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:48,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 235 transitions. [2021-08-13 12:50:48,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 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 12:50:48,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 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 12:50:48,232 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 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 12:50:48,232 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 392 predicate places. [2021-08-13 12:50:48,232 INFO L482 AbstractCegarLoop]: Abstraction has has 431 places, 1742 transitions, 177095 flow [2021-08-13 12:50:48,232 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 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 12:50:48,232 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:48,232 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] [2021-08-13 12:50:48,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-08-13 12:50:48,232 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:48,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:48,232 INFO L82 PathProgramCache]: Analyzing trace with hash -56511068, now seen corresponding path program 51 times [2021-08-13 12:50:48,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:48,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047923636] [2021-08-13 12:50:48,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:48,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:48,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:48,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:48,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:48,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:48,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:50:48,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:48,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:50:48,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:48,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:50:48,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:48,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:50:48,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:48,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:50:48,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:48,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:48,320 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:50:48,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:50:48,322 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 12:50:48,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:48,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047923636] [2021-08-13 12:50:48,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047923636] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:48,323 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:48,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:50:48,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604159393] [2021-08-13 12:50:48,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:50:48,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:48,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:50:48,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:50:48,324 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:50:48,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 1742 transitions, 177095 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:50:48,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:48,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:50:48,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:05,309 INFO L129 PetriNetUnfolder]: 2050/5768 cut-off events. [2021-08-13 12:51:05,309 INFO L130 PetriNetUnfolder]: For 4290/4290 co-relation queries the response was YES. [2021-08-13 12:51:05,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 199440 conditions, 5768 events. 2050/5768 cut-off events. For 4290/4290 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 61251 event pairs, 67 based on Foata normal form. 1/5757 useless extension candidates. Maximal degree in co-relation 197889. Up to 3471 conditions per place. [2021-08-13 12:51:05,386 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1024 selfloop transitions, 70 changer transitions 662/1766 dead transitions. [2021-08-13 12:51:05,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 1766 transitions, 183055 flow [2021-08-13 12:51:05,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:51:05,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:51:05,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 296 transitions. [2021-08-13 12:51:05,387 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7474747474747475 [2021-08-13 12:51:05,387 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 296 transitions. [2021-08-13 12:51:05,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 296 transitions. [2021-08-13 12:51:05,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:05,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 296 transitions. [2021-08-13 12:51:05,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.888888888888886) internal successors, (296), 9 states have internal predecessors, (296), 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 12:51:05,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:51:05,388 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:51:05,388 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 400 predicate places. [2021-08-13 12:51:05,388 INFO L482 AbstractCegarLoop]: Abstraction has has 439 places, 1766 transitions, 183055 flow [2021-08-13 12:51:05,388 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:51:05,389 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:05,389 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] [2021-08-13 12:51:05,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-08-13 12:51:05,389 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:51:05,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:05,389 INFO L82 PathProgramCache]: Analyzing trace with hash 2013022430, now seen corresponding path program 52 times [2021-08-13 12:51:05,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:05,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867957239] [2021-08-13 12:51:05,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:05,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:05,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:05,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:05,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:05,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:05,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:51:05,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:05,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:05,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:05,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:51:05,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:05,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:05,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:05,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:05,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:05,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:05,447 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:51:05,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:51:05,449 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 12:51:05,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:05,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867957239] [2021-08-13 12:51:05,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867957239] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:05,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:05,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:05,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045433813] [2021-08-13 12:51:05,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:05,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:05,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:05,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:05,451 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:51:05,451 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 1766 transitions, 183055 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:51:05,451 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:05,451 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:51:05,451 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:23,646 INFO L129 PetriNetUnfolder]: 2072/5835 cut-off events. [2021-08-13 12:51:23,646 INFO L130 PetriNetUnfolder]: For 4422/4422 co-relation queries the response was YES. [2021-08-13 12:51:23,672 INFO L84 FinitePrefix]: Finished finitePrefix Result has 205584 conditions, 5835 events. 2072/5835 cut-off events. For 4422/4422 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 62135 event pairs, 69 based on Foata normal form. 1/5824 useless extension candidates. Maximal degree in co-relation 204023. Up to 3515 conditions per place. [2021-08-13 12:51:23,725 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1050 selfloop transitions, 61 changer transitions 668/1789 dead transitions. [2021-08-13 12:51:23,726 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 1789 transitions, 189030 flow [2021-08-13 12:51:23,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:23,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:23,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 268 transitions. [2021-08-13 12:51:23,727 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2021-08-13 12:51:23,727 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 268 transitions. [2021-08-13 12:51:23,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 268 transitions. [2021-08-13 12:51:23,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:23,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 268 transitions. [2021-08-13 12:51:23,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.5) internal successors, (268), 8 states have internal predecessors, (268), 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 12:51:23,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:51:23,728 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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 12:51:23,728 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 407 predicate places. [2021-08-13 12:51:23,728 INFO L482 AbstractCegarLoop]: Abstraction has has 446 places, 1789 transitions, 189030 flow [2021-08-13 12:51:23,728 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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 12:51:23,728 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:23,729 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] [2021-08-13 12:51:23,729 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-08-13 12:51:23,729 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:51:23,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:23,729 INFO L82 PathProgramCache]: Analyzing trace with hash 2123415800, now seen corresponding path program 53 times [2021-08-13 12:51:23,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:23,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371041833] [2021-08-13 12:51:23,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:23,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:23,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:23,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:23,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:23,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:23,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:51:23,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:23,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:23,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:23,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:51:23,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:23,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:23,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:23,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:51:23,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:23,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:23,799 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:51:23,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:51:23,801 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 12:51:23,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:23,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371041833] [2021-08-13 12:51:23,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371041833] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:23,801 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:23,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:23,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955889364] [2021-08-13 12:51:23,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:51:23,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:23,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:51:23,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:51:23,802 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:51:23,803 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 1789 transitions, 189030 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:51:23,803 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:23,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:51:23,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:42,900 INFO L129 PetriNetUnfolder]: 2078/5861 cut-off events. [2021-08-13 12:51:42,901 INFO L130 PetriNetUnfolder]: For 4539/4539 co-relation queries the response was YES. [2021-08-13 12:51:42,927 INFO L84 FinitePrefix]: Finished finitePrefix Result has 209966 conditions, 5861 events. 2078/5861 cut-off events. For 4539/4539 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 62492 event pairs, 69 based on Foata normal form. 1/5850 useless extension candidates. Maximal degree in co-relation 208377. Up to 3525 conditions per place. [2021-08-13 12:51:42,982 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1011 selfloop transitions, 97 changer transitions 681/1799 dead transitions. [2021-08-13 12:51:42,982 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 1799 transitions, 193668 flow [2021-08-13 12:51:42,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:51:42,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:51:42,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 299 transitions. [2021-08-13 12:51:42,983 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2021-08-13 12:51:42,983 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 299 transitions. [2021-08-13 12:51:42,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 299 transitions. [2021-08-13 12:51:42,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:42,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 299 transitions. [2021-08-13 12:51:42,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.22222222222222) internal successors, (299), 9 states have internal predecessors, (299), 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 12:51:42,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:51:42,984 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:51:42,984 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 415 predicate places. [2021-08-13 12:51:42,984 INFO L482 AbstractCegarLoop]: Abstraction has has 454 places, 1799 transitions, 193668 flow [2021-08-13 12:51:42,984 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:51:42,984 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:42,984 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] [2021-08-13 12:51:42,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-08-13 12:51:42,984 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:51:42,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:42,985 INFO L82 PathProgramCache]: Analyzing trace with hash 530696372, now seen corresponding path program 54 times [2021-08-13 12:51:42,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:42,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115177580] [2021-08-13 12:51:42,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:42,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:42,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:42,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:42,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:43,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:43,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:51:43,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:43,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:43,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:43,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:51:43,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:43,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:43,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:43,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:51:43,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:43,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:43,053 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:51:43,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:51:43,055 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 12:51:43,055 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:43,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115177580] [2021-08-13 12:51:43,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115177580] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:43,056 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:43,056 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:43,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821597072] [2021-08-13 12:51:43,056 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:51:43,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:43,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:51:43,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:51:43,057 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:51:43,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 1799 transitions, 193668 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:51:43,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:43,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:51:43,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:02,705 INFO L129 PetriNetUnfolder]: 2119/5974 cut-off events. [2021-08-13 12:52:02,705 INFO L130 PetriNetUnfolder]: For 4681/4681 co-relation queries the response was YES. [2021-08-13 12:52:02,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217442 conditions, 5974 events. 2119/5974 cut-off events. For 4681/4681 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 63964 event pairs, 69 based on Foata normal form. 1/5963 useless extension candidates. Maximal degree in co-relation 215811. Up to 3590 conditions per place. [2021-08-13 12:52:02,787 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1083 selfloop transitions, 66 changer transitions 681/1840 dead transitions. [2021-08-13 12:52:02,787 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 1840 transitions, 201756 flow [2021-08-13 12:52:02,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:52:02,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:52:02,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 296 transitions. [2021-08-13 12:52:02,788 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7474747474747475 [2021-08-13 12:52:02,788 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 296 transitions. [2021-08-13 12:52:02,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 296 transitions. [2021-08-13 12:52:02,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:02,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 296 transitions. [2021-08-13 12:52:02,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.888888888888886) internal successors, (296), 9 states have internal predecessors, (296), 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 12:52:02,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:52:02,789 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:52:02,789 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 423 predicate places. [2021-08-13 12:52:02,789 INFO L482 AbstractCegarLoop]: Abstraction has has 462 places, 1840 transitions, 201756 flow [2021-08-13 12:52:02,789 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:52:02,789 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:02,789 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] [2021-08-13 12:52:02,790 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-08-13 12:52:02,790 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:52:02,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:02,790 INFO L82 PathProgramCache]: Analyzing trace with hash -563931126, now seen corresponding path program 55 times [2021-08-13 12:52:02,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:02,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968459782] [2021-08-13 12:52:02,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:02,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:02,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:02,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:02,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:02,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:02,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:52:02,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:02,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:02,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:02,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:52:02,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:02,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:02,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:02,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:52:02,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:02,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:02,861 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:52:02,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:52:02,864 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 12:52:02,864 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:02,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968459782] [2021-08-13 12:52:02,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968459782] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:02,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:02,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:02,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015498836] [2021-08-13 12:52:02,865 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:52:02,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:02,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:52:02,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:52:02,865 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:52:02,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1840 transitions, 201756 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:52:02,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:02,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:52:02,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:24,041 INFO L129 PetriNetUnfolder]: 2141/6054 cut-off events. [2021-08-13 12:52:24,041 INFO L130 PetriNetUnfolder]: For 4817/4817 co-relation queries the response was YES. [2021-08-13 12:52:24,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 223688 conditions, 6054 events. 2141/6054 cut-off events. For 4817/4817 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 65111 event pairs, 72 based on Foata normal form. 1/6043 useless extension candidates. Maximal degree in co-relation 222020. Up to 3631 conditions per place. [2021-08-13 12:52:24,123 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1096 selfloop transitions, 81 changer transitions 701/1888 dead transitions. [2021-08-13 12:52:24,123 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 1888 transitions, 210792 flow [2021-08-13 12:52:24,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:52:24,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:52:24,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-08-13 12:52:24,125 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 12:52:24,125 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-08-13 12:52:24,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-08-13 12:52:24,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:24,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-08-13 12:52:24,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 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 12:52:24,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:52:24,126 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:52:24,126 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 431 predicate places. [2021-08-13 12:52:24,126 INFO L482 AbstractCegarLoop]: Abstraction has has 470 places, 1888 transitions, 210792 flow [2021-08-13 12:52:24,126 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:52:24,126 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:24,126 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] [2021-08-13 12:52:24,126 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-08-13 12:52:24,126 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:52:24,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:24,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1895493834, now seen corresponding path program 56 times [2021-08-13 12:52:24,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:24,126 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074482845] [2021-08-13 12:52:24,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:24,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:24,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:24,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:24,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:24,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:24,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:52:24,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:24,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:24,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:24,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:52:24,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:24,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:24,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:24,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:24,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:24,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:24,199 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:52:24,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:52:24,201 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 12:52:24,201 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:24,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074482845] [2021-08-13 12:52:24,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074482845] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:24,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:24,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:24,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282665536] [2021-08-13 12:52:24,202 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:52:24,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:24,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:52:24,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:52:24,202 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:52:24,203 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 1888 transitions, 210792 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:52:24,203 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:24,203 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:52:24,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:47,345 INFO L129 PetriNetUnfolder]: 2183/6172 cut-off events. [2021-08-13 12:52:47,345 INFO L130 PetriNetUnfolder]: For 4998/4998 co-relation queries the response was YES. [2021-08-13 12:52:47,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230879 conditions, 6172 events. 2183/6172 cut-off events. For 4998/4998 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 66626 event pairs, 69 based on Foata normal form. 1/6161 useless extension candidates. Maximal degree in co-relation 229128. Up to 3686 conditions per place. [2021-08-13 12:52:47,431 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1102 selfloop transitions, 97 changer transitions 707/1916 dead transitions. [2021-08-13 12:52:47,431 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 1916 transitions, 217770 flow [2021-08-13 12:52:47,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:52:47,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 12:52:47,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 300 transitions. [2021-08-13 12:52:47,432 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2021-08-13 12:52:47,432 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 300 transitions. [2021-08-13 12:52:47,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 300 transitions. [2021-08-13 12:52:47,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:47,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 300 transitions. [2021-08-13 12:52:47,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.333333333333336) internal successors, (300), 9 states have internal predecessors, (300), 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 12:52:47,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:52:47,434 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 12:52:47,434 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 439 predicate places. [2021-08-13 12:52:47,434 INFO L482 AbstractCegarLoop]: Abstraction has has 478 places, 1916 transitions, 217770 flow [2021-08-13 12:52:47,434 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:52:47,434 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:47,434 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] [2021-08-13 12:52:47,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-08-13 12:52:47,435 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:52:47,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:47,435 INFO L82 PathProgramCache]: Analyzing trace with hash 2069782428, now seen corresponding path program 57 times [2021-08-13 12:52:47,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:47,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182381052] [2021-08-13 12:52:47,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:47,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:47,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:47,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:47,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:47,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:47,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:52:47,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:47,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:47,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:47,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:52:47,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:47,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:47,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:47,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:52:47,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:47,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:47,516 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:52:47,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:52:47,518 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 12:52:47,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:47,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182381052] [2021-08-13 12:52:47,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182381052] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:47,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:47,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 12:52:47,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953949628] [2021-08-13 12:52:47,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 12:52:47,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:47,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 12:52:47,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 12:52:47,519 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:52:47,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 1916 transitions, 217770 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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 12:52:47,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:47,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:52:47,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:53:12,502 INFO L129 PetriNetUnfolder]: 2216/6278 cut-off events. [2021-08-13 12:53:12,502 INFO L130 PetriNetUnfolder]: For 5146/5146 co-relation queries the response was YES. [2021-08-13 12:53:12,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 239044 conditions, 6278 events. 2216/6278 cut-off events. For 5146/5146 co-relation queries the response was YES. Maximal size of possible extension queue 725. Compared 68121 event pairs, 69 based on Foata normal form. 1/6266 useless extension candidates. Maximal degree in co-relation 237283. Up to 3757 conditions per place. [2021-08-13 12:53:12,590 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1067 selfloop transitions, 163 changer transitions 723/1963 dead transitions. [2021-08-13 12:53:12,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 1963 transitions, 227059 flow [2021-08-13 12:53:12,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 12:53:12,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 12:53:12,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2021-08-13 12:53:12,591 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7454545454545455 [2021-08-13 12:53:12,591 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 328 transitions. [2021-08-13 12:53:12,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 328 transitions. [2021-08-13 12:53:12,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:53:12,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 328 transitions. [2021-08-13 12:53:12,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.8) internal successors, (328), 10 states have internal predecessors, (328), 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 12:53:12,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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 12:53:12,592 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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 12:53:12,593 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 448 predicate places. [2021-08-13 12:53:12,593 INFO L482 AbstractCegarLoop]: Abstraction has has 487 places, 1963 transitions, 227059 flow [2021-08-13 12:53:12,593 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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 12:53:12,593 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:53:12,593 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] [2021-08-13 12:53:12,593 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-08-13 12:53:12,593 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:53:12,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:53:12,593 INFO L82 PathProgramCache]: Analyzing trace with hash 641038620, now seen corresponding path program 58 times [2021-08-13 12:53:12,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:53:12,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917409365] [2021-08-13 12:53:12,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:53:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:53:12,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:12,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:53:12,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:12,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:53:12,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:12,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:53:12,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:12,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:53:12,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:12,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:53:12,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:12,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:53:12,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:12,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:53:12,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:12,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:53:12,670 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:53:12,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:53:12,672 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 12:53:12,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:53:12,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917409365] [2021-08-13 12:53:12,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917409365] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:53:12,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:53:12,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 12:53:12,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978549528] [2021-08-13 12:53:12,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 12:53:12,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:53:12,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 12:53:12,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 12:53:12,675 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:53:12,675 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 1963 transitions, 227059 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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 12:53:12,675 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:53:12,675 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:53:12,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:53:38,579 INFO L129 PetriNetUnfolder]: 2221/6304 cut-off events. [2021-08-13 12:53:38,580 INFO L130 PetriNetUnfolder]: For 5272/5272 co-relation queries the response was YES. [2021-08-13 12:53:38,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 243825 conditions, 6304 events. 2221/6304 cut-off events. For 5272/5272 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 68525 event pairs, 69 based on Foata normal form. 1/6292 useless extension candidates. Maximal degree in co-relation 242054. Up to 3769 conditions per place. [2021-08-13 12:53:38,668 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1078 selfloop transitions, 143 changer transitions 744/1975 dead transitions. [2021-08-13 12:53:38,669 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 1975 transitions, 232381 flow [2021-08-13 12:53:38,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 12:53:38,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 12:53:38,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 331 transitions. [2021-08-13 12:53:38,670 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7522727272727273 [2021-08-13 12:53:38,670 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 331 transitions. [2021-08-13 12:53:38,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 331 transitions. [2021-08-13 12:53:38,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:53:38,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 331 transitions. [2021-08-13 12:53:38,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.1) internal successors, (331), 10 states have internal predecessors, (331), 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 12:53:38,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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 12:53:38,671 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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 12:53:38,671 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 457 predicate places. [2021-08-13 12:53:38,671 INFO L482 AbstractCegarLoop]: Abstraction has has 496 places, 1975 transitions, 232381 flow [2021-08-13 12:53:38,671 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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 12:53:38,671 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:53:38,671 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] [2021-08-13 12:53:38,672 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-08-13 12:53:38,672 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:53:38,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:53:38,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1171145366, now seen corresponding path program 59 times [2021-08-13 12:53:38,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:53:38,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337308909] [2021-08-13 12:53:38,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:53:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:53:38,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:38,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:53:38,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:38,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:53:38,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:38,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:53:38,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:38,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:53:38,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:38,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:53:38,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:38,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:53:38,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:38,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:53:38,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:38,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:53:38,764 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:53:38,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:53:38,767 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 12:53:38,767 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:53:38,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337308909] [2021-08-13 12:53:38,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337308909] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:53:38,767 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:53:38,767 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 12:53:38,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354370143] [2021-08-13 12:53:38,767 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 12:53:38,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:53:38,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 12:53:38,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 12:53:38,768 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:53:38,768 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 1975 transitions, 232381 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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 12:53:38,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:53:38,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:53:38,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:54:06,038 INFO L129 PetriNetUnfolder]: 2229/6338 cut-off events. [2021-08-13 12:54:06,038 INFO L130 PetriNetUnfolder]: For 5396/5396 co-relation queries the response was YES. [2021-08-13 12:54:06,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 249059 conditions, 6338 events. 2229/6338 cut-off events. For 5396/5396 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 69003 event pairs, 71 based on Foata normal form. 1/6325 useless extension candidates. Maximal degree in co-relation 247266. Up to 3788 conditions per place. [2021-08-13 12:54:06,130 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1129 selfloop transitions, 108 changer transitions 747/1994 dead transitions. [2021-08-13 12:54:06,130 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 1994 transitions, 238591 flow [2021-08-13 12:54:06,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 12:54:06,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 12:54:06,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2021-08-13 12:54:06,131 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7454545454545455 [2021-08-13 12:54:06,131 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 328 transitions. [2021-08-13 12:54:06,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 328 transitions. [2021-08-13 12:54:06,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:54:06,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 328 transitions. [2021-08-13 12:54:06,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.8) internal successors, (328), 10 states have internal predecessors, (328), 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 12:54:06,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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 12:54:06,132 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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 12:54:06,132 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 466 predicate places. [2021-08-13 12:54:06,132 INFO L482 AbstractCegarLoop]: Abstraction has has 505 places, 1994 transitions, 238591 flow [2021-08-13 12:54:06,132 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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 12:54:06,132 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:54:06,132 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] [2021-08-13 12:54:06,132 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-08-13 12:54:06,132 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:54:06,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:54:06,133 INFO L82 PathProgramCache]: Analyzing trace with hash 18580558, now seen corresponding path program 60 times [2021-08-13 12:54:06,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:54:06,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480671666] [2021-08-13 12:54:06,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:54:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:54:06,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:06,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:54:06,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:06,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:54:06,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:06,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:54:06,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:06,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:54:06,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:06,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:54:06,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:06,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:54:06,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:06,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:54:06,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:06,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:54:06,215 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:54:06,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:54:06,217 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 12:54:06,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:54:06,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480671666] [2021-08-13 12:54:06,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480671666] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:54:06,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:54:06,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 12:54:06,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325920024] [2021-08-13 12:54:06,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 12:54:06,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:54:06,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 12:54:06,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 12:54:06,219 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:54:06,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 1994 transitions, 238591 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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 12:54:06,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:54:06,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:54:06,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:54:37,248 INFO L129 PetriNetUnfolder]: 2242/6389 cut-off events. [2021-08-13 12:54:37,248 INFO L130 PetriNetUnfolder]: For 5545/5545 co-relation queries the response was YES. [2021-08-13 12:54:37,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 254595 conditions, 6389 events. 2242/6389 cut-off events. For 5545/5545 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 69792 event pairs, 74 based on Foata normal form. 1/6377 useless extension candidates. Maximal degree in co-relation 252756. Up to 3811 conditions per place. [2021-08-13 12:54:37,341 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1095 selfloop transitions, 143 changer transitions 786/2034 dead transitions. [2021-08-13 12:54:37,341 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 2034 transitions, 247439 flow [2021-08-13 12:54:37,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 12:54:37,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 12:54:37,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 329 transitions. [2021-08-13 12:54:37,342 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7477272727272727 [2021-08-13 12:54:37,342 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 329 transitions. [2021-08-13 12:54:37,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 329 transitions. [2021-08-13 12:54:37,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:54:37,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 329 transitions. [2021-08-13 12:54:37,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.9) internal successors, (329), 10 states have internal predecessors, (329), 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 12:54:37,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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 12:54:37,343 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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 12:54:37,343 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 475 predicate places. [2021-08-13 12:54:37,343 INFO L482 AbstractCegarLoop]: Abstraction has has 514 places, 2034 transitions, 247439 flow [2021-08-13 12:54:37,343 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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 12:54:37,343 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:54:37,344 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] [2021-08-13 12:54:37,344 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-08-13 12:54:37,344 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:54:37,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:54:37,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1722035282, now seen corresponding path program 61 times [2021-08-13 12:54:37,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:54:37,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841177232] [2021-08-13 12:54:37,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:54:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:54:37,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:37,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:54:37,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:37,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:54:37,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:37,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:54:37,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:37,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:54:37,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:37,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 12:54:37,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:37,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:54:37,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:37,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:54:37,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:37,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:54:37,407 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 12:54:37,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 12:54:37,410 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 12:54:37,410 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:54:37,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841177232] [2021-08-13 12:54:37,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841177232] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:54:37,410 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:54:37,411 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:54:37,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491100387] [2021-08-13 12:54:37,411 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 12:54:37,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:54:37,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 12:54:37,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 12:54:37,412 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 12:54:37,412 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 2034 transitions, 247439 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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 12:54:37,412 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:54:37,412 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 12:54:37,412 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2021-08-13 12:54:57,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 12:54:57,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-08-13 12:54:57,451 WARN L547 AbstractCegarLoop]: Verification canceled [2021-08-13 12:54:57,453 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-13 12:54:57,454 WARN L188 ceAbstractionStarter]: Timeout [2021-08-13 12:54:57,455 INFO L202 PluginConnector]: Adding new model sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.08 12:54:57 BasicIcfg [2021-08-13 12:54:57,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-13 12:54:57,455 INFO L168 Benchmark]: Toolchain (without parser) took 541794.09 ms. Allocated memory was 183.5 MB in the beginning and 4.4 GB in the end (delta: 4.3 GB). Free memory was 164.3 MB in the beginning and 2.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 2.6 GB. Max. memory is 8.0 GB. [2021-08-13 12:54:57,455 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 183.5 MB. Free memory is still 165.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-13 12:54:57,455 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.31 ms. Allocated memory is still 183.5 MB. Free memory was 164.3 MB in the beginning and 162.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-13 12:54:57,455 INFO L168 Benchmark]: Boogie Preprocessor took 13.70 ms. Allocated memory is still 183.5 MB. Free memory was 162.8 MB in the beginning and 161.9 MB in the end (delta: 875.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-13 12:54:57,455 INFO L168 Benchmark]: RCFGBuilder took 225.34 ms. Allocated memory is still 183.5 MB. Free memory was 161.9 MB in the beginning and 153.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-08-13 12:54:57,455 INFO L168 Benchmark]: TraceAbstraction took 541519.55 ms. Allocated memory was 183.5 MB in the beginning and 4.4 GB in the end (delta: 4.3 GB). Free memory was 152.5 MB in the beginning and 2.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 2.6 GB. Max. memory is 8.0 GB. [2021-08-13 12:54:57,456 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 0.13 ms. Allocated memory is still 183.5 MB. Free memory is still 165.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 27.31 ms. Allocated memory is still 183.5 MB. Free memory was 164.3 MB in the beginning and 162.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.70 ms. Allocated memory is still 183.5 MB. Free memory was 162.8 MB in the beginning and 161.9 MB in the end (delta: 875.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 225.34 ms. Allocated memory is still 183.5 MB. Free memory was 161.9 MB in the beginning and 153.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 541519.55 ms. Allocated memory was 183.5 MB in the beginning and 4.4 GB in the end (delta: 4.3 GB). Free memory was 152.5 MB in the beginning and 2.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 2.6 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 25/44 universal loopers) in iteration 63,while PetriNetUnfolder was constructing finite prefix that currently has 203518 conditions, 3995 events (1851/3994 cut-off events. For 843/843 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 38029 event pairs, 61 based on Foata normal form. 0/4709 useless extension candidates. Maximal degree in co-relation 203200. Up to 2970 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 6 procedures, 42 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 25.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 541389.6ms, OverallIterations: 63, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 535246.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 50.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1951 SDtfs, 1278 SDslu, 6586 SDs, 0 SdLazy, 17538 SolverSat, 437 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7673.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 555 GetRequests, 74 SyntacticMatches, 61 SemanticMatches, 420 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3405.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=247439occurred in iteration=62, InterpolantAutomatonStates: 537, 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: 59.0ms SsaConstructionTime, 207.1ms SatisfiabilityAnalysisTime, 5398.4ms InterpolantComputationTime, 1638 NumberOfCodeBlocks, 1638 NumberOfCodeBlocksAsserted, 63 NumberOfCheckSat, 1575 ConstructedInterpolants, 0 QuantifiedInterpolants, 11607 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 63 InterpolantComputations, 63 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