/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/weaver-benchmarks/generated/bench/exp2x6.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 13:06:59,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 13:06:59,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 13:06:59,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 13:06:59,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 13:06:59,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 13:06:59,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 13:06:59,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 13:06:59,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 13:06:59,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 13:06:59,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 13:06:59,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-13 13:06:59,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 13:06:59,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 13:06:59,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 13:06:59,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 13:06:59,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 13:06:59,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 13:06:59,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 13:06:59,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 13:06:59,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 13:06:59,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 13:06:59,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 13:06:59,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 13:06:59,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-13 13:06:59,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-13 13:06:59,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-13 13:06:59,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-13 13:06:59,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-13 13:06:59,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-13 13:06:59,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-13 13:06:59,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-13 13:06:59,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-13 13:06:59,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-13 13:06:59,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-13 13:06:59,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-13 13:06:59,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-13 13:06:59,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-13 13:06:59,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 13:06:59,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 13:06:59,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 13:06:59,572 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 13:06:59,612 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 13:06:59,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 13:06:59,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 13:06:59,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 13:06:59,613 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 13:06:59,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 13:06:59,613 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 13:06:59,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 13:06:59,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 13:06:59,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 13:06:59,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 13:06:59,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 13:06:59,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 13:06:59,614 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 13:06:59,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 13:06:59,614 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 13:06:59,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 13:06:59,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 13:06:59,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 13:06:59,615 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 13:06:59,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 13:06:59,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 13:06:59,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 13:06:59,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 13:06:59,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 13:06:59,615 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 13:06:59,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 13:06:59,616 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 13:06:59,616 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 13:06:59,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 13:06:59,616 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 13:06:59,616 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 13:06:59,616 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 13:06:59,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 13:06:59,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 13:06:59,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 13:06:59,921 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 13:06:59,922 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 13:06:59,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x6.wvr.bpl [2021-08-13 13:06:59,923 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x6.wvr.bpl' [2021-08-13 13:06:59,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 13:06:59,939 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 13:06:59,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 13:06:59,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 13:06:59,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 13:06:59,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 01:06:59" (1/1) ... [2021-08-13 13:06:59,952 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 01:06:59" (1/1) ... [2021-08-13 13:06:59,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 13:06:59,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 13:06:59,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 13:06:59,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 13:06:59,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 01:06:59" (1/1) ... [2021-08-13 13:06:59,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 01:06:59" (1/1) ... [2021-08-13 13:06:59,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 01:06:59" (1/1) ... [2021-08-13 13:06:59,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 01:06:59" (1/1) ... [2021-08-13 13:06:59,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 01:06:59" (1/1) ... [2021-08-13 13:06:59,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 01:06:59" (1/1) ... [2021-08-13 13:06:59,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 01:06:59" (1/1) ... [2021-08-13 13:06:59,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 13:06:59,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 13:06:59,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 13:06:59,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 13:06:59,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 01:06:59" (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 13:07:00,015 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-13 13:07:00,015 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-13 13:07:00,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-13 13:07:00,016 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-13 13:07:00,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-13 13:07:00,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-13 13:07:00,016 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 13:07:00,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 13:07:00,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 13:07:00,017 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-13 13:07:00,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-13 13:07:00,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-13 13:07:00,017 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-08-13 13:07:00,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-08-13 13:07:00,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-08-13 13:07:00,018 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 13:07:00,186 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 13:07:00,186 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 13:07:00,187 INFO L202 PluginConnector]: Adding new model exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 01:07:00 BoogieIcfgContainer [2021-08-13 13:07:00,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 13:07:00,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 13:07:00,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 13:07:00,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 13:07:00,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 01:06:59" (1/2) ... [2021-08-13 13:07:00,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f066f71 and model type exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 01:07:00, skipping insertion in model container [2021-08-13 13:07:00,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 01:07:00" (2/2) ... [2021-08-13 13:07:00,192 INFO L111 eAbstractionObserver]: Analyzing ICFG exp2x6.wvr.bpl [2021-08-13 13:07:00,196 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 13:07:00,196 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 13:07:00,213 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 13:07:00,286 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-08-13 13:07:00,301 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-13 13:07:00,335 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 13:07:00,335 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 13:07:00,335 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 13:07:00,335 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 13:07:00,335 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 13:07:00,335 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 13:07:00,335 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 13:07:00,335 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 13:07:00,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 45 transitions, 122 flow [2021-08-13 13:07:00,407 INFO L129 PetriNetUnfolder]: 4/41 cut-off events. [2021-08-13 13:07:00,407 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-08-13 13:07:00,410 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 41 events. 4/41 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 100 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2021-08-13 13:07:00,410 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 45 transitions, 122 flow [2021-08-13 13:07:00,413 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 39 transitions, 102 flow [2021-08-13 13:07:00,448 INFO L129 PetriNetUnfolder]: 4/38 cut-off events. [2021-08-13 13:07:00,448 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-08-13 13:07:00,449 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:07:00,449 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 13:07:00,449 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 13:07:00,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:07:00,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1191194427, now seen corresponding path program 1 times [2021-08-13 13:07:00,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:07:00,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894413009] [2021-08-13 13:07:00,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:07:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:07:00,644 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-08-13 13:07:00,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 13:07:00,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:00,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:00,662 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 13:07:00,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:07:00,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894413009] [2021-08-13 13:07:00,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894413009] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:07:00,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:07:00,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-13 13:07:00,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855482279] [2021-08-13 13:07:00,669 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 13:07:00,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:07:00,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 13:07:00,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 13:07:00,680 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 13:07:00,682 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:00,682 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:07:00,682 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 13:07:00,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:07:00,874 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([116] L51-->thread4FINAL: Formula: (not (< v_x4_7 v_n_7)) InVars {x4=v_x4_7, n=v_n_7} OutVars{x4=v_x4_7, n=v_n_7} AuxVars[] AssignedVars[][24], [18#L29true, 51#true, 53#true, 55#true, 57#true, 26#L18true, 58#true, 45#L66true, 15#L40true, 47#thread4FINALtrue]) [2021-08-13 13:07:00,874 INFO L384 tUnfolder$Statistics]: this new event has 11 ancestors and is cut-off event [2021-08-13 13:07:00,874 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-08-13 13:07:00,874 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-08-13 13:07:00,874 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-08-13 13:07:00,875 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([115] L51-->L52: Formula: (< v_x4_8 v_n_8) InVars {x4=v_x4_8, n=v_n_8} OutVars{x4=v_x4_8, n=v_n_8} AuxVars[] AssignedVars[][25], [18#L29true, 51#true, 53#true, 55#true, 57#true, 26#L18true, 58#true, 45#L66true, 15#L40true, 31#L52true]) [2021-08-13 13:07:00,875 INFO L384 tUnfolder$Statistics]: this new event has 11 ancestors and is cut-off event [2021-08-13 13:07:00,875 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-08-13 13:07:00,875 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-08-13 13:07:00,876 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-08-13 13:07:00,902 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([116] L51-->thread4FINAL: Formula: (not (< v_x4_7 v_n_7)) InVars {x4=v_x4_7, n=v_n_7} OutVars{x4=v_x4_7, n=v_n_7} AuxVars[] AssignedVars[][24], [18#L29true, 51#true, 53#true, 55#true, 57#true, 58#true, 10#L19true, 45#L66true, 47#thread4FINALtrue, 15#L40true]) [2021-08-13 13:07:00,902 INFO L384 tUnfolder$Statistics]: this new event has 12 ancestors and is cut-off event [2021-08-13 13:07:00,902 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 13:07:00,902 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 13:07:00,902 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 13:07:00,903 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([115] L51-->L52: Formula: (< v_x4_8 v_n_8) InVars {x4=v_x4_8, n=v_n_8} OutVars{x4=v_x4_8, n=v_n_8} AuxVars[] AssignedVars[][25], [18#L29true, 51#true, 53#true, 55#true, 57#true, 58#true, 10#L19true, 45#L66true, 31#L52true, 15#L40true]) [2021-08-13 13:07:00,903 INFO L384 tUnfolder$Statistics]: this new event has 12 ancestors and is cut-off event [2021-08-13 13:07:00,903 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 13:07:00,903 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 13:07:00,903 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 13:07:00,910 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([116] L51-->thread4FINAL: Formula: (not (< v_x4_7 v_n_7)) InVars {x4=v_x4_7, n=v_n_7} OutVars{x4=v_x4_7, n=v_n_7} AuxVars[] AssignedVars[][24], [18#L29true, 51#true, 53#true, 55#true, 57#true, 9#thread1FINALtrue, 58#true, 45#L66true, 47#thread4FINALtrue, 15#L40true]) [2021-08-13 13:07:00,911 INFO L384 tUnfolder$Statistics]: this new event has 12 ancestors and is cut-off event [2021-08-13 13:07:00,911 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 13:07:00,911 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 13:07:00,911 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 13:07:00,911 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([115] L51-->L52: Formula: (< v_x4_8 v_n_8) InVars {x4=v_x4_8, n=v_n_8} OutVars{x4=v_x4_8, n=v_n_8} AuxVars[] AssignedVars[][25], [18#L29true, 51#true, 53#true, 55#true, 57#true, 9#thread1FINALtrue, 58#true, 45#L66true, 31#L52true, 15#L40true]) [2021-08-13 13:07:00,911 INFO L384 tUnfolder$Statistics]: this new event has 12 ancestors and is cut-off event [2021-08-13 13:07:00,911 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 13:07:00,911 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 13:07:00,911 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 13:07:00,947 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([116] L51-->thread4FINAL: Formula: (not (< v_x4_7 v_n_7)) InVars {x4=v_x4_7, n=v_n_7} OutVars{x4=v_x4_7, n=v_n_7} AuxVars[] AssignedVars[][24], [18#L29true, 51#true, 36#L20true, 53#true, 55#true, 57#true, 58#true, 45#L66true, 47#thread4FINALtrue, 15#L40true]) [2021-08-13 13:07:00,947 INFO L384 tUnfolder$Statistics]: this new event has 13 ancestors and is cut-off event [2021-08-13 13:07:00,947 INFO L387 tUnfolder$Statistics]: existing Event has 13 ancestors and is cut-off event [2021-08-13 13:07:00,947 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-08-13 13:07:00,947 INFO L387 tUnfolder$Statistics]: existing Event has 13 ancestors and is cut-off event [2021-08-13 13:07:00,947 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([115] L51-->L52: Formula: (< v_x4_8 v_n_8) InVars {x4=v_x4_8, n=v_n_8} OutVars{x4=v_x4_8, n=v_n_8} AuxVars[] AssignedVars[][25], [18#L29true, 51#true, 36#L20true, 53#true, 55#true, 57#true, 58#true, 45#L66true, 31#L52true, 15#L40true]) [2021-08-13 13:07:00,947 INFO L384 tUnfolder$Statistics]: this new event has 13 ancestors and is cut-off event [2021-08-13 13:07:00,947 INFO L387 tUnfolder$Statistics]: existing Event has 13 ancestors and is cut-off event [2021-08-13 13:07:00,947 INFO L387 tUnfolder$Statistics]: existing Event has 13 ancestors and is cut-off event [2021-08-13 13:07:00,947 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-08-13 13:07:00,990 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([116] L51-->thread4FINAL: Formula: (not (< v_x4_7 v_n_7)) InVars {x4=v_x4_7, n=v_n_7} OutVars{x4=v_x4_7, n=v_n_7} AuxVars[] AssignedVars[][24], [18#L29true, 51#true, 53#true, 55#true, 57#true, 41#L21true, 58#true, 45#L66true, 47#thread4FINALtrue, 15#L40true]) [2021-08-13 13:07:00,990 INFO L384 tUnfolder$Statistics]: this new event has 14 ancestors and is cut-off event [2021-08-13 13:07:00,990 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-08-13 13:07:00,991 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-08-13 13:07:00,991 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-08-13 13:07:00,991 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([115] L51-->L52: Formula: (< v_x4_8 v_n_8) InVars {x4=v_x4_8, n=v_n_8} OutVars{x4=v_x4_8, n=v_n_8} AuxVars[] AssignedVars[][25], [18#L29true, 51#true, 53#true, 55#true, 57#true, 41#L21true, 58#true, 45#L66true, 31#L52true, 15#L40true]) [2021-08-13 13:07:00,991 INFO L384 tUnfolder$Statistics]: this new event has 14 ancestors and is cut-off event [2021-08-13 13:07:00,992 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-08-13 13:07:00,992 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-08-13 13:07:00,992 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-08-13 13:07:01,066 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([116] L51-->thread4FINAL: Formula: (not (< v_x4_7 v_n_7)) InVars {x4=v_x4_7, n=v_n_7} OutVars{x4=v_x4_7, n=v_n_7} AuxVars[] AssignedVars[][24], [17#L22true, 18#L29true, 51#true, 53#true, 55#true, 57#true, 58#true, 45#L66true, 47#thread4FINALtrue, 15#L40true]) [2021-08-13 13:07:01,071 INFO L384 tUnfolder$Statistics]: this new event has 15 ancestors and is cut-off event [2021-08-13 13:07:01,071 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-08-13 13:07:01,071 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-08-13 13:07:01,071 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-08-13 13:07:01,072 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([115] L51-->L52: Formula: (< v_x4_8 v_n_8) InVars {x4=v_x4_8, n=v_n_8} OutVars{x4=v_x4_8, n=v_n_8} AuxVars[] AssignedVars[][25], [17#L22true, 18#L29true, 51#true, 53#true, 55#true, 57#true, 58#true, 45#L66true, 31#L52true, 15#L40true]) [2021-08-13 13:07:01,072 INFO L384 tUnfolder$Statistics]: this new event has 15 ancestors and is cut-off event [2021-08-13 13:07:01,072 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-08-13 13:07:01,072 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-08-13 13:07:01,072 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-08-13 13:07:01,206 INFO L129 PetriNetUnfolder]: 5212/7020 cut-off events. [2021-08-13 13:07:01,206 INFO L130 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2021-08-13 13:07:01,217 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13938 conditions, 7020 events. 5212/7020 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 32472 event pairs, 1884 based on Foata normal form. 1/5609 useless extension candidates. Maximal degree in co-relation 13911. Up to 6632 conditions per place. [2021-08-13 13:07:01,249 INFO L132 encePairwiseOnDemand]: 39/45 looper letters, 33 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2021-08-13 13:07:01,249 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 51 transitions, 202 flow [2021-08-13 13:07:01,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 13:07:01,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 13:07:01,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2021-08-13 13:07:01,258 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6888888888888889 [2021-08-13 13:07:01,258 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 93 transitions. [2021-08-13 13:07:01,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 93 transitions. [2021-08-13 13:07:01,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:07:01,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 93 transitions. [2021-08-13 13:07:01,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:01,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:01,273 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:01,274 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2021-08-13 13:07:01,274 INFO L482 AbstractCegarLoop]: Abstraction has has 50 places, 51 transitions, 202 flow [2021-08-13 13:07:01,274 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:01,274 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:07:01,274 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] [2021-08-13 13:07:01,274 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 13:07:01,275 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 13:07:01,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:07:01,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1608113992, now seen corresponding path program 1 times [2021-08-13 13:07:01,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:07:01,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192717030] [2021-08-13 13:07:01,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:07:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:07:01,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:01,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:01,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:01,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:01,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:01,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:01,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 13:07:01,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:07:01,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192717030] [2021-08-13 13:07:01,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192717030] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:07:01,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:07:01,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 13:07:01,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171114380] [2021-08-13 13:07:01,330 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 13:07:01,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:07:01,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 13:07:01,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 13:07:01,332 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 13:07:01,333 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 51 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:01,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:07:01,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 13:07:01,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:07:01,895 INFO L129 PetriNetUnfolder]: 7703/10664 cut-off events. [2021-08-13 13:07:01,896 INFO L130 PetriNetUnfolder]: For 3317/3447 co-relation queries the response was YES. [2021-08-13 13:07:01,907 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28241 conditions, 10664 events. 7703/10664 cut-off events. For 3317/3447 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 55250 event pairs, 2425 based on Foata normal form. 4/8566 useless extension candidates. Maximal degree in co-relation 28199. Up to 10023 conditions per place. [2021-08-13 13:07:01,985 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 53 selfloop transitions, 12 changer transitions 0/88 dead transitions. [2021-08-13 13:07:01,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 88 transitions, 480 flow [2021-08-13 13:07:01,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 13:07:01,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 13:07:01,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 180 transitions. [2021-08-13 13:07:01,991 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8 [2021-08-13 13:07:01,991 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 180 transitions. [2021-08-13 13:07:01,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 180 transitions. [2021-08-13 13:07:01,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:07:01,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 180 transitions. [2021-08-13 13:07:01,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:01,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 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 13:07:01,995 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 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 13:07:01,996 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 6 predicate places. [2021-08-13 13:07:01,996 INFO L482 AbstractCegarLoop]: Abstraction has has 54 places, 88 transitions, 480 flow [2021-08-13 13:07:01,996 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:01,996 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:07:01,996 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] [2021-08-13 13:07:01,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 13:07:01,997 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 13:07:01,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:07:01,997 INFO L82 PathProgramCache]: Analyzing trace with hash 375731404, now seen corresponding path program 2 times [2021-08-13 13:07:01,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:07:01,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454309646] [2021-08-13 13:07:01,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:07:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:07:02,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:02,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:02,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:02,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:02,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:02,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:02,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 13:07:02,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:07:02,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454309646] [2021-08-13 13:07:02,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454309646] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:07:02,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:07:02,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 13:07:02,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970764307] [2021-08-13 13:07:02,042 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 13:07:02,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:07:02,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 13:07:02,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 13:07:02,043 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 13:07:02,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 88 transitions, 480 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:02,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:07:02,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 13:07:02,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:07:02,592 INFO L129 PetriNetUnfolder]: 7075/9753 cut-off events. [2021-08-13 13:07:02,593 INFO L130 PetriNetUnfolder]: For 9262/9538 co-relation queries the response was YES. [2021-08-13 13:07:02,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32475 conditions, 9753 events. 7075/9753 cut-off events. For 9262/9538 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 49166 event pairs, 2164 based on Foata normal form. 13/7892 useless extension candidates. Maximal degree in co-relation 32435. Up to 9148 conditions per place. [2021-08-13 13:07:02,644 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 90 selfloop transitions, 18 changer transitions 0/131 dead transitions. [2021-08-13 13:07:02,644 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 131 transitions, 954 flow [2021-08-13 13:07:02,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 13:07:02,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 13:07:02,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2021-08-13 13:07:02,646 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7911111111111111 [2021-08-13 13:07:02,646 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 178 transitions. [2021-08-13 13:07:02,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 178 transitions. [2021-08-13 13:07:02,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:07:02,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 178 transitions. [2021-08-13 13:07:02,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:02,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 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 13:07:02,647 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 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 13:07:02,648 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 10 predicate places. [2021-08-13 13:07:02,648 INFO L482 AbstractCegarLoop]: Abstraction has has 58 places, 131 transitions, 954 flow [2021-08-13 13:07:02,648 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:02,648 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:07:02,648 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] [2021-08-13 13:07:02,648 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 13:07:02,648 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 13:07:02,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:07:02,649 INFO L82 PathProgramCache]: Analyzing trace with hash 815941149, now seen corresponding path program 1 times [2021-08-13 13:07:02,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:07:02,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378153120] [2021-08-13 13:07:02,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:07:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:07:02,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:02,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:02,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:02,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:02,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:02,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:02,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 13:07:02,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:07:02,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378153120] [2021-08-13 13:07:02,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378153120] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:07:02,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:07:02,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 13:07:02,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39861307] [2021-08-13 13:07:02,668 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 13:07:02,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:07:02,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 13:07:02,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 13:07:02,669 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 13:07:02,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 131 transitions, 954 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:02,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:07:02,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 13:07:02,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:07:03,208 INFO L129 PetriNetUnfolder]: 7208/9938 cut-off events. [2021-08-13 13:07:03,208 INFO L130 PetriNetUnfolder]: For 18981/19887 co-relation queries the response was YES. [2021-08-13 13:07:03,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39852 conditions, 9938 events. 7208/9938 cut-off events. For 18981/19887 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 50342 event pairs, 1980 based on Foata normal form. 32/8105 useless extension candidates. Maximal degree in co-relation 39808. Up to 9375 conditions per place. [2021-08-13 13:07:03,267 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 113 selfloop transitions, 17 changer transitions 0/153 dead transitions. [2021-08-13 13:07:03,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 153 transitions, 1390 flow [2021-08-13 13:07:03,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 13:07:03,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 13:07:03,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2021-08-13 13:07:03,268 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7911111111111111 [2021-08-13 13:07:03,268 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 178 transitions. [2021-08-13 13:07:03,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 178 transitions. [2021-08-13 13:07:03,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:07:03,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 178 transitions. [2021-08-13 13:07:03,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:03,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 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 13:07:03,271 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 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 13:07:03,271 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 14 predicate places. [2021-08-13 13:07:03,271 INFO L482 AbstractCegarLoop]: Abstraction has has 62 places, 153 transitions, 1390 flow [2021-08-13 13:07:03,271 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:03,271 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:07:03,271 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] [2021-08-13 13:07:03,271 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 13:07:03,271 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 13:07:03,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:07:03,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1360935607, now seen corresponding path program 1 times [2021-08-13 13:07:03,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:07:03,272 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948018795] [2021-08-13 13:07:03,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:07:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:07:03,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:03,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:03,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:03,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:03,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:03,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:03,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 13:07:03,306 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:07:03,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948018795] [2021-08-13 13:07:03,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948018795] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:07:03,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:07:03,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 13:07:03,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262290623] [2021-08-13 13:07:03,306 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 13:07:03,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:07:03,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 13:07:03,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 13:07:03,307 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 13:07:03,308 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 153 transitions, 1390 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:03,308 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:07:03,308 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 13:07:03,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:07:04,045 INFO L129 PetriNetUnfolder]: 8134/11286 cut-off events. [2021-08-13 13:07:04,045 INFO L130 PetriNetUnfolder]: For 22731/23785 co-relation queries the response was YES. [2021-08-13 13:07:04,059 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53312 conditions, 11286 events. 8134/11286 cut-off events. For 22731/23785 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 60053 event pairs, 1365 based on Foata normal form. 20/9208 useless extension candidates. Maximal degree in co-relation 53255. Up to 10679 conditions per place. [2021-08-13 13:07:04,110 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 223 selfloop transitions, 61 changer transitions 2/328 dead transitions. [2021-08-13 13:07:04,110 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 328 transitions, 3652 flow [2021-08-13 13:07:04,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 13:07:04,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 13:07:04,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 179 transitions. [2021-08-13 13:07:04,111 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7955555555555556 [2021-08-13 13:07:04,112 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 179 transitions. [2021-08-13 13:07:04,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 179 transitions. [2021-08-13 13:07:04,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:07:04,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 179 transitions. [2021-08-13 13:07:04,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:04,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 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 13:07:04,113 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 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 13:07:04,114 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 18 predicate places. [2021-08-13 13:07:04,114 INFO L482 AbstractCegarLoop]: Abstraction has has 66 places, 328 transitions, 3652 flow [2021-08-13 13:07:04,114 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:04,114 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:07:04,114 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] [2021-08-13 13:07:04,114 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 13:07:04,114 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 13:07:04,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:07:04,115 INFO L82 PathProgramCache]: Analyzing trace with hash 2135301104, now seen corresponding path program 1 times [2021-08-13 13:07:04,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:07:04,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538840706] [2021-08-13 13:07:04,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:07:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:07:04,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:04,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 13:07:04,156 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:07:04,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538840706] [2021-08-13 13:07:04,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538840706] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 13:07:04,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081661674] [2021-08-13 13:07:04,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-13 13:07:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:07:04,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-13 13:07:04,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-13 13:07:04,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:04,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:04,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:04,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:04,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:04,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:04,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:04,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:04,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:04,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:04,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:04,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:04,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:04,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:04,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:04,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:04,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 13:07:04,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 13:07:04,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 13:07:04,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-13 13:07:04,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:04,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:04,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:04,346 INFO L142 QuantifierPusher]: treesize reduction 9, result has 10.0 percent of original size [2021-08-13 13:07:04,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:04,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:04,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 13:07:04,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081661674] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 13:07:04,364 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-13 13:07:04,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-08-13 13:07:04,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876630866] [2021-08-13 13:07:04,364 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 13:07:04,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:07:04,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 13:07:04,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 13:07:04,366 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 13:07:04,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 328 transitions, 3652 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:04,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:07:04,366 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 13:07:04,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:07:05,808 INFO L129 PetriNetUnfolder]: 8557/12458 cut-off events. [2021-08-13 13:07:05,809 INFO L130 PetriNetUnfolder]: For 23056/24809 co-relation queries the response was YES. [2021-08-13 13:07:05,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65416 conditions, 12458 events. 8557/12458 cut-off events. For 23056/24809 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 71872 event pairs, 1428 based on Foata normal form. 31/10583 useless extension candidates. Maximal degree in co-relation 65334. Up to 11528 conditions per place. [2021-08-13 13:07:05,935 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 482 selfloop transitions, 89 changer transitions 3/616 dead transitions. [2021-08-13 13:07:05,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 616 transitions, 8196 flow [2021-08-13 13:07:05,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 13:07:05,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 13:07:05,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 180 transitions. [2021-08-13 13:07:05,937 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8 [2021-08-13 13:07:05,937 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 180 transitions. [2021-08-13 13:07:05,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 180 transitions. [2021-08-13 13:07:05,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:07:05,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 180 transitions. [2021-08-13 13:07:05,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:05,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 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 13:07:05,938 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 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 13:07:05,938 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 22 predicate places. [2021-08-13 13:07:05,938 INFO L482 AbstractCegarLoop]: Abstraction has has 70 places, 616 transitions, 8196 flow [2021-08-13 13:07:05,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:05,938 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:07:05,939 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] [2021-08-13 13:07:06,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-08-13 13:07:06,155 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 13:07:06,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:07:06,156 INFO L82 PathProgramCache]: Analyzing trace with hash -875771450, now seen corresponding path program 2 times [2021-08-13 13:07:06,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:07:06,156 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838732796] [2021-08-13 13:07:06,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:07:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:07:06,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:06,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:06,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:06,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:06,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:06,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:06,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 13:07:06,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:07:06,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838732796] [2021-08-13 13:07:06,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838732796] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:07:06,183 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:07:06,183 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 13:07:06,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686616027] [2021-08-13 13:07:06,183 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 13:07:06,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:07:06,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 13:07:06,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 13:07:06,184 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 13:07:06,184 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 616 transitions, 8196 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:06,184 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:07:06,184 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 13:07:06,185 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:07:07,408 INFO L129 PetriNetUnfolder]: 7898/11522 cut-off events. [2021-08-13 13:07:07,408 INFO L130 PetriNetUnfolder]: For 21760/24940 co-relation queries the response was YES. [2021-08-13 13:07:07,431 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67512 conditions, 11522 events. 7898/11522 cut-off events. For 21760/24940 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 66185 event pairs, 999 based on Foata normal form. 47/9866 useless extension candidates. Maximal degree in co-relation 67445. Up to 10566 conditions per place. [2021-08-13 13:07:07,489 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 460 selfloop transitions, 111 changer transitions 8/621 dead transitions. [2021-08-13 13:07:07,490 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 621 transitions, 9430 flow [2021-08-13 13:07:07,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 13:07:07,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 13:07:07,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 177 transitions. [2021-08-13 13:07:07,491 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7866666666666666 [2021-08-13 13:07:07,491 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 177 transitions. [2021-08-13 13:07:07,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 177 transitions. [2021-08-13 13:07:07,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:07:07,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 177 transitions. [2021-08-13 13:07:07,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:07,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 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 13:07:07,492 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 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 13:07:07,492 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2021-08-13 13:07:07,492 INFO L482 AbstractCegarLoop]: Abstraction has has 74 places, 621 transitions, 9430 flow [2021-08-13 13:07:07,492 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:07,492 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:07:07,492 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] [2021-08-13 13:07:07,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 13:07:07,493 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 13:07:07,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:07:07,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1538529383, now seen corresponding path program 2 times [2021-08-13 13:07:07,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:07:07,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5908916] [2021-08-13 13:07:07,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:07:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:07:07,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:07,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:07,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:07,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:07,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:07,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:07,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 13:07:07,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:07:07,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5908916] [2021-08-13 13:07:07,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5908916] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:07:07,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:07:07,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 13:07:07,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427104374] [2021-08-13 13:07:07,509 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 13:07:07,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:07:07,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 13:07:07,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 13:07:07,510 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 13:07:07,510 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 621 transitions, 9430 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:07,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:07:07,510 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 13:07:07,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:07:08,880 INFO L129 PetriNetUnfolder]: 8769/12632 cut-off events. [2021-08-13 13:07:08,880 INFO L130 PetriNetUnfolder]: For 29271/31838 co-relation queries the response was YES. [2021-08-13 13:07:08,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83572 conditions, 12632 events. 8769/12632 cut-off events. For 29271/31838 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 69838 event pairs, 1044 based on Foata normal form. 6/10839 useless extension candidates. Maximal degree in co-relation 83500. Up to 11772 conditions per place. [2021-08-13 13:07:08,973 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 614 selfloop transitions, 88 changer transitions 8/752 dead transitions. [2021-08-13 13:07:08,974 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 752 transitions, 12928 flow [2021-08-13 13:07:08,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 13:07:08,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 13:07:08,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2021-08-13 13:07:08,974 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7911111111111111 [2021-08-13 13:07:08,975 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 178 transitions. [2021-08-13 13:07:08,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 178 transitions. [2021-08-13 13:07:08,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:07:08,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 178 transitions. [2021-08-13 13:07:08,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:08,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 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 13:07:08,976 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 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 13:07:08,976 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 30 predicate places. [2021-08-13 13:07:08,976 INFO L482 AbstractCegarLoop]: Abstraction has has 78 places, 752 transitions, 12928 flow [2021-08-13 13:07:08,976 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:08,976 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:07:08,976 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] [2021-08-13 13:07:08,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 13:07:08,976 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 13:07:08,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:07:08,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1585811695, now seen corresponding path program 2 times [2021-08-13 13:07:08,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:07:08,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381237202] [2021-08-13 13:07:08,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:07:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:07:08,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:08,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 13:07:08,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:08,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:07:08,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:08,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:08,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 13:07:08,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:07:08,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381237202] [2021-08-13 13:07:08,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381237202] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:07:08,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:07:08,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 13:07:08,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796254124] [2021-08-13 13:07:08,992 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 13:07:08,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:07:08,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 13:07:08,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 13:07:08,993 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 13:07:08,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 752 transitions, 12928 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:08,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:07:08,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 13:07:08,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:07:10,537 INFO L129 PetriNetUnfolder]: 9736/14036 cut-off events. [2021-08-13 13:07:10,538 INFO L130 PetriNetUnfolder]: For 51822/55308 co-relation queries the response was YES. [2021-08-13 13:07:10,572 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102926 conditions, 14036 events. 9736/14036 cut-off events. For 51822/55308 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 78669 event pairs, 1172 based on Foata normal form. 51/12192 useless extension candidates. Maximal degree in co-relation 102849. Up to 13108 conditions per place. [2021-08-13 13:07:10,819 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 754 selfloop transitions, 106 changer transitions 8/913 dead transitions. [2021-08-13 13:07:10,819 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 913 transitions, 17538 flow [2021-08-13 13:07:10,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 13:07:10,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 13:07:10,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2021-08-13 13:07:10,820 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7911111111111111 [2021-08-13 13:07:10,821 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 178 transitions. [2021-08-13 13:07:10,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 178 transitions. [2021-08-13 13:07:10,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:07:10,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 178 transitions. [2021-08-13 13:07:10,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:10,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 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 13:07:10,822 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 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 13:07:10,822 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 34 predicate places. [2021-08-13 13:07:10,822 INFO L482 AbstractCegarLoop]: Abstraction has has 82 places, 913 transitions, 17538 flow [2021-08-13 13:07:10,822 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:10,822 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:07:10,822 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 13:07:10,822 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 13:07:10,822 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 13:07:10,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:07:10,822 INFO L82 PathProgramCache]: Analyzing trace with hash -466782790, now seen corresponding path program 1 times [2021-08-13 13:07:10,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:07:10,823 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231742216] [2021-08-13 13:07:10,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:07:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:07:10,860 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 13:07:10,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 13:07:10,866 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:10,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:10,873 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:10,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:10,881 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:10,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:10,890 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:10,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:10,900 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:10,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:10,901 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:10,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:10,902 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:10,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:10,904 INFO L142 QuantifierPusher]: treesize reduction 15, result has 44.4 percent of original size [2021-08-13 13:07:10,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 13:07:10,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:10,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:10,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 13:07:10,907 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:07:10,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231742216] [2021-08-13 13:07:10,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231742216] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:07:10,908 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:07:10,908 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 13:07:10,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539111654] [2021-08-13 13:07:10,908 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 13:07:10,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:07:10,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 13:07:10,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 13:07:10,909 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 13:07:10,909 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 913 transitions, 17538 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:10,909 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:07:10,909 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 13:07:10,909 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:07:13,701 INFO L129 PetriNetUnfolder]: 10822/16116 cut-off events. [2021-08-13 13:07:13,701 INFO L130 PetriNetUnfolder]: For 49382/50409 co-relation queries the response was YES. [2021-08-13 13:07:13,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 130527 conditions, 16116 events. 10822/16116 cut-off events. For 49382/50409 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 98791 event pairs, 892 based on Foata normal form. 29/14000 useless extension candidates. Maximal degree in co-relation 130429. Up to 14608 conditions per place. [2021-08-13 13:07:13,826 INFO L132 encePairwiseOnDemand]: 33/45 looper letters, 1312 selfloop transitions, 80 changer transitions 14/1419 dead transitions. [2021-08-13 13:07:13,826 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 1419 transitions, 29870 flow [2021-08-13 13:07:13,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 13:07:13,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 13:07:13,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 244 transitions. [2021-08-13 13:07:13,828 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7746031746031746 [2021-08-13 13:07:13,828 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 244 transitions. [2021-08-13 13:07:13,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 244 transitions. [2021-08-13 13:07:13,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:07:13,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 244 transitions. [2021-08-13 13:07:13,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:13,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:13,829 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:13,829 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 40 predicate places. [2021-08-13 13:07:13,829 INFO L482 AbstractCegarLoop]: Abstraction has has 88 places, 1419 transitions, 29870 flow [2021-08-13 13:07:13,829 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:13,829 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:07:13,829 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 13:07:13,829 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 13:07:13,829 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 13:07:13,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:07:13,830 INFO L82 PathProgramCache]: Analyzing trace with hash -779885262, now seen corresponding path program 1 times [2021-08-13 13:07:13,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:07:13,830 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323845195] [2021-08-13 13:07:13,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:07:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:07:13,851 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 13:07:13,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 13:07:13,856 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:13,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:13,862 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:13,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:13,869 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:13,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:13,877 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:13,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:13,886 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:13,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:13,887 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:13,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:13,887 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:13,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:13,889 INFO L142 QuantifierPusher]: treesize reduction 15, result has 44.4 percent of original size [2021-08-13 13:07:13,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 13:07:13,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:13,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:13,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 13:07:13,892 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:07:13,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323845195] [2021-08-13 13:07:13,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323845195] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:07:13,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:07:13,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 13:07:13,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139685175] [2021-08-13 13:07:13,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 13:07:13,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:07:13,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 13:07:13,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 13:07:13,893 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 13:07:13,893 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 1419 transitions, 29870 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:13,893 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:07:13,893 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 13:07:13,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:07:18,291 INFO L129 PetriNetUnfolder]: 11908/17705 cut-off events. [2021-08-13 13:07:18,291 INFO L130 PetriNetUnfolder]: For 53912/55402 co-relation queries the response was YES. [2021-08-13 13:07:18,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 160460 conditions, 17705 events. 11908/17705 cut-off events. For 53912/55402 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 109497 event pairs, 904 based on Foata normal form. 36/15344 useless extension candidates. Maximal degree in co-relation 160339. Up to 16108 conditions per place. [2021-08-13 13:07:18,470 INFO L132 encePairwiseOnDemand]: 33/45 looper letters, 1812 selfloop transitions, 80 changer transitions 20/1925 dead transitions. [2021-08-13 13:07:18,470 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 1925 transitions, 44226 flow [2021-08-13 13:07:18,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 13:07:18,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 13:07:18,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 244 transitions. [2021-08-13 13:07:18,472 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7746031746031746 [2021-08-13 13:07:18,472 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 244 transitions. [2021-08-13 13:07:18,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 244 transitions. [2021-08-13 13:07:18,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:07:18,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 244 transitions. [2021-08-13 13:07:18,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:18,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:18,474 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:18,474 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 46 predicate places. [2021-08-13 13:07:18,474 INFO L482 AbstractCegarLoop]: Abstraction has has 94 places, 1925 transitions, 44226 flow [2021-08-13 13:07:18,474 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:18,474 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:07:18,474 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 13:07:18,474 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 13:07:18,474 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 13:07:18,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:07:18,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1161876054, now seen corresponding path program 2 times [2021-08-13 13:07:18,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:07:18,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004921303] [2021-08-13 13:07:18,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:07:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:07:18,553 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 13:07:18,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 13:07:18,559 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:18,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:18,567 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:18,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:18,577 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:18,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:18,585 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:18,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:18,601 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:18,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:18,603 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 13:07:18,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 13:07:18,604 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:18,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:18,618 INFO L142 QuantifierPusher]: treesize reduction 15, result has 44.4 percent of original size [2021-08-13 13:07:18,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 13:07:18,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:18,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:18,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 13:07:18,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:07:18,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004921303] [2021-08-13 13:07:18,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004921303] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:07:18,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:07:18,621 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 13:07:18,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144566084] [2021-08-13 13:07:18,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 13:07:18,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:07:18,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 13:07:18,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 13:07:18,622 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 13:07:18,623 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 1925 transitions, 44226 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:18,623 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:07:18,623 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 13:07:18,623 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:07:26,118 INFO L129 PetriNetUnfolder]: 13495/20032 cut-off events. [2021-08-13 13:07:26,119 INFO L130 PetriNetUnfolder]: For 60743/65228 co-relation queries the response was YES. [2021-08-13 13:07:26,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200688 conditions, 20032 events. 13495/20032 cut-off events. For 60743/65228 co-relation queries the response was YES. Maximal size of possible extension queue 792. Compared 125783 event pairs, 904 based on Foata normal form. 114/17397 useless extension candidates. Maximal degree in co-relation 200556. Up to 18290 conditions per place. [2021-08-13 13:07:26,313 INFO L132 encePairwiseOnDemand]: 33/45 looper letters, 2490 selfloop transitions, 135 changer transitions 32/2670 dead transitions. [2021-08-13 13:07:26,328 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 2670 transitions, 66380 flow [2021-08-13 13:07:26,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 13:07:26,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 13:07:26,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 243 transitions. [2021-08-13 13:07:26,332 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2021-08-13 13:07:26,332 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 243 transitions. [2021-08-13 13:07:26,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 243 transitions. [2021-08-13 13:07:26,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:07:26,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 243 transitions. [2021-08-13 13:07:26,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 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 13:07:26,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:26,336 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:26,336 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 52 predicate places. [2021-08-13 13:07:26,336 INFO L482 AbstractCegarLoop]: Abstraction has has 100 places, 2670 transitions, 66380 flow [2021-08-13 13:07:26,336 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:26,336 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:07:26,336 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 13:07:26,336 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-13 13:07:26,336 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 13:07:26,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:07:26,336 INFO L82 PathProgramCache]: Analyzing trace with hash 2017671836, now seen corresponding path program 2 times [2021-08-13 13:07:26,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:07:26,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103579395] [2021-08-13 13:07:26,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:07:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:07:26,403 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 13:07:26,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 13:07:26,410 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:26,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:26,415 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:26,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:26,423 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:26,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:26,432 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:26,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:26,434 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:26,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:26,449 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 13:07:26,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 13:07:26,450 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:26,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:26,461 INFO L142 QuantifierPusher]: treesize reduction 15, result has 44.4 percent of original size [2021-08-13 13:07:26,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 13:07:26,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:26,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:26,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 13:07:26,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:07:26,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103579395] [2021-08-13 13:07:26,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103579395] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:07:26,464 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:07:26,464 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 13:07:26,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477818284] [2021-08-13 13:07:26,464 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 13:07:26,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:07:26,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 13:07:26,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 13:07:26,465 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 13:07:26,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 2670 transitions, 66380 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:26,466 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:07:26,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 13:07:26,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:07:42,444 INFO L129 PetriNetUnfolder]: 15082/22471 cut-off events. [2021-08-13 13:07:42,445 INFO L130 PetriNetUnfolder]: For 66950/68747 co-relation queries the response was YES. [2021-08-13 13:07:42,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 245484 conditions, 22471 events. 15082/22471 cut-off events. For 66950/68747 co-relation queries the response was YES. Maximal size of possible extension queue 1000. Compared 147262 event pairs, 774 based on Foata normal form. 56/19427 useless extension candidates. Maximal degree in co-relation 245341. Up to 20472 conditions per place. [2021-08-13 13:07:42,793 INFO L132 encePairwiseOnDemand]: 33/45 looper letters, 3223 selfloop transitions, 135 changer transitions 44/3415 dead transitions. [2021-08-13 13:07:42,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 3415 transitions, 91514 flow [2021-08-13 13:07:42,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 13:07:42,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 13:07:42,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 243 transitions. [2021-08-13 13:07:42,794 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2021-08-13 13:07:42,794 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 243 transitions. [2021-08-13 13:07:42,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 243 transitions. [2021-08-13 13:07:42,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:07:42,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 243 transitions. [2021-08-13 13:07:42,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 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 13:07:42,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:42,812 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:42,813 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 58 predicate places. [2021-08-13 13:07:42,813 INFO L482 AbstractCegarLoop]: Abstraction has has 106 places, 3415 transitions, 91514 flow [2021-08-13 13:07:42,816 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:42,816 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:07:42,816 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 13:07:42,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-13 13:07:42,816 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 13:07:42,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:07:42,816 INFO L82 PathProgramCache]: Analyzing trace with hash 443512840, now seen corresponding path program 3 times [2021-08-13 13:07:42,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:07:42,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112031322] [2021-08-13 13:07:42,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:07:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:07:42,867 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 13:07:42,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 13:07:42,872 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:42,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:42,879 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:42,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:42,888 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:42,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:42,889 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 13:07:42,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 13:07:42,890 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:42,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:42,909 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:42,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:42,918 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:07:42,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:07:42,932 INFO L142 QuantifierPusher]: treesize reduction 15, result has 44.4 percent of original size [2021-08-13 13:07:42,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 13:07:42,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:07:42,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:07:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 13:07:42,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:07:42,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112031322] [2021-08-13 13:07:42,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112031322] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:07:42,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:07:42,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 13:07:42,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936951391] [2021-08-13 13:07:42,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 13:07:42,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:07:42,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 13:07:42,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 13:07:42,937 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 13:07:42,937 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 3415 transitions, 91514 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:07:42,937 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:07:42,937 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 13:07:42,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:08:12,619 INFO L129 PetriNetUnfolder]: 17225/25626 cut-off events. [2021-08-13 13:08:12,619 INFO L130 PetriNetUnfolder]: For 76782/85432 co-relation queries the response was YES. [2021-08-13 13:08:12,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 304452 conditions, 25626 events. 17225/25626 cut-off events. For 76782/85432 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 170098 event pairs, 774 based on Foata normal form. 138/22182 useless extension candidates. Maximal degree in co-relation 304296. Up to 23420 conditions per place. [2021-08-13 13:08:12,854 INFO L132 encePairwiseOnDemand]: 33/45 looper letters, 4178 selfloop transitions, 179 changer transitions 62/4432 dead transitions. [2021-08-13 13:08:12,855 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 4432 transitions, 127436 flow [2021-08-13 13:08:12,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 13:08:12,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 13:08:12,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 243 transitions. [2021-08-13 13:08:12,856 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2021-08-13 13:08:12,856 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 243 transitions. [2021-08-13 13:08:12,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 243 transitions. [2021-08-13 13:08:12,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:08:12,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 243 transitions. [2021-08-13 13:08:12,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 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 13:08:12,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:08:12,870 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:08:12,871 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 64 predicate places. [2021-08-13 13:08:12,871 INFO L482 AbstractCegarLoop]: Abstraction has has 112 places, 4432 transitions, 127436 flow [2021-08-13 13:08:12,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:08:12,871 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:08:12,874 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, 1, 1, 1] [2021-08-13 13:08:12,874 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-13 13:08:12,874 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 13:08:12,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:08:12,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1363035022, now seen corresponding path program 4 times [2021-08-13 13:08:12,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:08:12,874 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559702856] [2021-08-13 13:08:12,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:08:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:08:12,912 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 13:08:12,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 13:08:12,917 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:08:12,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:08:12,922 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 13:08:12,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 13:08:12,923 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:08:12,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:08:12,931 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:08:12,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:08:12,939 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:08:12,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:08:12,947 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:08:12,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:08:12,948 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:08:12,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:08:12,949 INFO L142 QuantifierPusher]: treesize reduction 15, result has 44.4 percent of original size [2021-08-13 13:08:12,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 13:08:12,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:08:12,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:08:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 13:08:12,951 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:08:12,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559702856] [2021-08-13 13:08:12,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559702856] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:08:12,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:08:12,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 13:08:12,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111204909] [2021-08-13 13:08:12,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 13:08:12,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:08:12,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 13:08:12,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 13:08:12,952 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 13:08:12,952 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 4432 transitions, 127436 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:08:12,952 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:08:12,952 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 13:08:12,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:09:15,746 INFO L129 PetriNetUnfolder]: 19772/29412 cut-off events. [2021-08-13 13:09:15,747 INFO L130 PetriNetUnfolder]: For 83706/85949 co-relation queries the response was YES. [2021-08-13 13:09:15,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 377234 conditions, 29412 events. 19772/29412 cut-off events. For 83706/85949 co-relation queries the response was YES. Maximal size of possible extension queue 1462. Compared 199318 event pairs, 774 based on Foata normal form. 44/25292 useless extension candidates. Maximal degree in co-relation 377063. Up to 26926 conditions per place. [2021-08-13 13:09:16,036 INFO L132 encePairwiseOnDemand]: 33/45 looper letters, 5347 selfloop transitions, 209 changer transitions 86/5655 dead transitions. [2021-08-13 13:09:16,037 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 5655 transitions, 173778 flow [2021-08-13 13:09:16,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 13:09:16,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 13:09:16,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 243 transitions. [2021-08-13 13:09:16,038 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2021-08-13 13:09:16,038 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 243 transitions. [2021-08-13 13:09:16,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 243 transitions. [2021-08-13 13:09:16,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:09:16,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 243 transitions. [2021-08-13 13:09:16,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 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 13:09:16,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:09:16,039 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:09:16,039 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 70 predicate places. [2021-08-13 13:09:16,039 INFO L482 AbstractCegarLoop]: Abstraction has has 118 places, 5655 transitions, 173778 flow [2021-08-13 13:09:16,039 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:09:16,039 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:09:16,039 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 13:09:16,039 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-13 13:09:16,040 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 13:09:16,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:09:16,040 INFO L82 PathProgramCache]: Analyzing trace with hash 286299708, now seen corresponding path program 5 times [2021-08-13 13:09:16,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:09:16,040 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465344631] [2021-08-13 13:09:16,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:09:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:09:16,051 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 13:09:16,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 13:09:16,056 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:09:16,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:09:16,061 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:09:16,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:09:16,067 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:09:16,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:09:16,073 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:09:16,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:09:16,081 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:09:16,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:09:16,081 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:09:16,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:09:16,082 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:09:16,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:09:16,083 INFO L142 QuantifierPusher]: treesize reduction 15, result has 44.4 percent of original size [2021-08-13 13:09:16,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 13:09:16,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:09:16,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:09:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 13:09:16,085 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:09:16,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465344631] [2021-08-13 13:09:16,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465344631] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:09:16,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:09:16,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 13:09:16,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525962994] [2021-08-13 13:09:16,086 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 13:09:16,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:09:16,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 13:09:16,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 13:09:16,086 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 13:09:16,086 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 5655 transitions, 173778 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:09:16,086 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:09:16,087 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 13:09:16,087 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:11:31,793 INFO L129 PetriNetUnfolder]: 22469/33413 cut-off events. [2021-08-13 13:11:31,794 INFO L130 PetriNetUnfolder]: For 96450/104419 co-relation queries the response was YES. [2021-08-13 13:11:31,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 460443 conditions, 33413 events. 22469/33413 cut-off events. For 96450/104419 co-relation queries the response was YES. Maximal size of possible extension queue 1680. Compared 229767 event pairs, 774 based on Foata normal form. 138/28752 useless extension candidates. Maximal degree in co-relation 460237. Up to 30646 conditions per place. [2021-08-13 13:11:32,150 INFO L132 encePairwiseOnDemand]: 33/45 looper letters, 6633 selfloop transitions, 212 changer transitions 110/6968 dead transitions. [2021-08-13 13:11:32,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 6968 transitions, 228048 flow [2021-08-13 13:11:32,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 13:11:32,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 13:11:32,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 244 transitions. [2021-08-13 13:11:32,151 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7746031746031746 [2021-08-13 13:11:32,151 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 244 transitions. [2021-08-13 13:11:32,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 244 transitions. [2021-08-13 13:11:32,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:11:32,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 244 transitions. [2021-08-13 13:11:32,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:11:32,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:11:32,154 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:11:32,176 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 76 predicate places. [2021-08-13 13:11:32,176 INFO L482 AbstractCegarLoop]: Abstraction has has 124 places, 6968 transitions, 228048 flow [2021-08-13 13:11:32,177 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:11:32,177 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:11:32,177 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 13:11:32,177 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-13 13:11:32,177 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 13:11:32,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:11:32,177 INFO L82 PathProgramCache]: Analyzing trace with hash 960725144, now seen corresponding path program 3 times [2021-08-13 13:11:32,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:11:32,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756044642] [2021-08-13 13:11:32,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:11:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:11:32,207 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 13:11:32,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 13:11:32,212 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:11:32,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:11:32,218 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:11:32,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:11:32,237 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:11:32,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:11:32,238 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 13:11:32,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 13:11:32,238 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:11:32,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:11:32,245 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:11:32,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:11:32,252 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:11:32,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:11:32,253 INFO L142 QuantifierPusher]: treesize reduction 15, result has 44.4 percent of original size [2021-08-13 13:11:32,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 13:11:32,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:11:32,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:11:32,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 13:11:32,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:11:32,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756044642] [2021-08-13 13:11:32,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756044642] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:11:32,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:11:32,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 13:11:32,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363174680] [2021-08-13 13:11:32,256 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 13:11:32,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:11:32,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 13:11:32,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 13:11:32,257 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 13:11:32,257 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 6968 transitions, 228048 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:11:32,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:11:32,257 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 13:11:32,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:15:50,008 INFO L129 PetriNetUnfolder]: 24612/36754 cut-off events. [2021-08-13 13:15:50,113 INFO L130 PetriNetUnfolder]: For 104301/113104 co-relation queries the response was YES. [2021-08-13 13:15:50,239 INFO L84 FinitePrefix]: Finished finitePrefix Result has 538739 conditions, 36754 events. 24612/36754 cut-off events. For 104301/113104 co-relation queries the response was YES. Maximal size of possible extension queue 2010. Compared 261895 event pairs, 610 based on Foata normal form. 210/31683 useless extension candidates. Maximal degree in co-relation 538519. Up to 33594 conditions per place. [2021-08-13 13:15:50,596 INFO L132 encePairwiseOnDemand]: 33/45 looper letters, 7665 selfloop transitions, 179 changer transitions 128/7985 dead transitions. [2021-08-13 13:15:50,596 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 7985 transitions, 277178 flow [2021-08-13 13:15:50,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 13:15:50,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 13:15:50,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 243 transitions. [2021-08-13 13:15:50,597 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2021-08-13 13:15:50,597 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 243 transitions. [2021-08-13 13:15:50,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 243 transitions. [2021-08-13 13:15:50,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:15:50,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 243 transitions. [2021-08-13 13:15:50,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 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 13:15:50,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:15:50,599 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:15:50,599 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 82 predicate places. [2021-08-13 13:15:50,599 INFO L482 AbstractCegarLoop]: Abstraction has has 130 places, 7985 transitions, 277178 flow [2021-08-13 13:15:50,599 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:15:50,599 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:15:50,599 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 13:15:50,599 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-13 13:15:50,599 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 13:15:50,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:15:50,600 INFO L82 PathProgramCache]: Analyzing trace with hash 415250068, now seen corresponding path program 4 times [2021-08-13 13:15:50,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:15:50,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744028288] [2021-08-13 13:15:50,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:15:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:15:50,614 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 13:15:50,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 13:15:50,619 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:15:50,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:15:50,628 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 13:15:50,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 13:15:50,629 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:15:50,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:15:50,635 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:15:50,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:15:50,642 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:15:50,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:15:50,650 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:15:50,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:15:50,651 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 13:15:50,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 13:15:50,652 INFO L142 QuantifierPusher]: treesize reduction 15, result has 44.4 percent of original size [2021-08-13 13:15:50,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 13:15:50,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:15:50,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:15:50,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 13:15:50,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:15:50,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744028288] [2021-08-13 13:15:50,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744028288] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:15:50,654 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:15:50,654 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 13:15:50,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538861394] [2021-08-13 13:15:50,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 13:15:50,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:15:50,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 13:15:50,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 13:15:50,655 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 13:15:50,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 7985 transitions, 277178 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:15:50,655 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:15:50,655 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 13:15:50,655 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2021-08-13 13:16:36,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 13:16:36,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-13 13:16:36,121 WARN L547 AbstractCegarLoop]: Verification canceled [2021-08-13 13:16:36,123 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-13 13:16:36,125 WARN L188 ceAbstractionStarter]: Timeout [2021-08-13 13:16:36,126 INFO L202 PluginConnector]: Adding new model exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.08 01:16:36 BasicIcfg [2021-08-13 13:16:36,126 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-13 13:16:36,126 INFO L168 Benchmark]: Toolchain (without parser) took 576187.10 ms. Allocated memory was 181.4 MB in the beginning and 6.1 GB in the end (delta: 6.0 GB). Free memory was 161.7 MB in the beginning and 2.7 GB in the end (delta: -2.5 GB). Peak memory consumption was 5.0 GB. Max. memory is 8.0 GB. [2021-08-13 13:16:36,126 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 181.4 MB. Free memory was 162.8 MB in the beginning and 162.7 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-13 13:16:36,128 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.75 ms. Allocated memory is still 181.4 MB. Free memory was 161.5 MB in the beginning and 160.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-13 13:16:36,128 INFO L168 Benchmark]: Boogie Preprocessor took 10.27 ms. Allocated memory is still 181.4 MB. Free memory was 160.0 MB in the beginning and 159.2 MB in the end (delta: 888.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-13 13:16:36,128 INFO L168 Benchmark]: RCFGBuilder took 219.47 ms. Allocated memory is still 181.4 MB. Free memory was 158.9 MB in the beginning and 146.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-08-13 13:16:36,131 INFO L168 Benchmark]: TraceAbstraction took 575937.17 ms. Allocated memory was 181.4 MB in the beginning and 6.1 GB in the end (delta: 6.0 GB). Free memory was 146.0 MB in the beginning and 2.7 GB in the end (delta: -2.5 GB). Peak memory consumption was 5.0 GB. Max. memory is 8.0 GB. [2021-08-13 13:16:36,132 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 0.11 ms. Allocated memory is still 181.4 MB. Free memory was 162.8 MB in the beginning and 162.7 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 16.75 ms. Allocated memory is still 181.4 MB. Free memory was 161.5 MB in the beginning and 160.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 10.27 ms. Allocated memory is still 181.4 MB. Free memory was 160.0 MB in the beginning and 159.2 MB in the end (delta: 888.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 219.47 ms. Allocated memory is still 181.4 MB. Free memory was 158.9 MB in the beginning and 146.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 575937.17 ms. Allocated memory was 181.4 MB in the beginning and 6.1 GB in the end (delta: 6.0 GB). Free memory was 146.0 MB in the beginning and 2.7 GB in the end (delta: -2.5 GB). Peak memory consumption was 5.0 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 18/45 universal loopers) in iteration 18,while PetriNetUnfolder was constructing finite prefix that currently has 74285 conditions, 4446 events (3054/4445 cut-off events. For 30896/44158 co-relation queries the response was YES. Maximal size of possible extension queue 1142. Compared 30079 event pairs, 4 based on Foata normal form. 360/5120 useless extension candidates. Maximal degree in co-relation 74235. Up to 4251 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 74 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 34.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 575790.5ms, OverallIterations: 18, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 573939.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 78.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 220 SDtfs, 475 SDslu, 52 SDs, 0 SdLazy, 5162 SolverSat, 241 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1913.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 67 SyntacticMatches, 10 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 386.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=277178occurred in iteration=17, InterpolantAutomatonStates: 99, 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: 30.8ms SsaConstructionTime, 139.1ms SatisfiabilityAnalysisTime, 1087.7ms InterpolantComputationTime, 496 NumberOfCodeBlocks, 496 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 477 ConstructedInterpolants, 0 QuantifiedInterpolants, 3256 SizeOfPredicates, 1 NumberOfNonLiveVariables, 67 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 19 InterpolantComputations, 17 PerfectInterpolantSequences, 25/27 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