/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 18:26:50,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 18:26:50,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 18:26:50,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 18:26:50,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 18:26:50,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 18:26:50,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 18:26:50,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 18:26:50,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 18:26:50,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 18:26:50,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 18:26:50,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-13 18:26:50,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 18:26:50,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 18:26:50,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 18:26:50,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 18:26:50,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 18:26:50,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 18:26:50,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 18:26:50,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 18:26:50,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 18:26:50,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 18:26:50,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 18:26:50,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 18:26:50,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 18:26:50,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 18:26:50,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 18:26:50,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 18:26:50,907 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl-Hitting.epf [2021-08-13 18:26:50,943 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 18:26:50,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 18:26:50,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 18:26:50,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 18:26:50,948 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 18:26:50,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 18:26:50,948 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 18:26:50,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 18:26:50,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 18:26:50,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 18:26:50,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 18:26:50,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 18:26:50,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 18:26:50,949 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 18:26:50,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 18:26:50,950 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 18:26:50,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 18:26:50,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 18:26:50,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 18:26:50,950 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 18:26:50,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 18:26:50,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 18:26:50,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 18:26:50,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 18:26:50,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 18:26:50,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 18:26:50,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 18:26:50,951 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 18:26:50,952 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 18:26:50,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 18:26:50,952 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 18:26:50,952 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 18:26:50,952 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 18:26:50,952 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 18:26:51,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 18:26:51,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 18:26:51,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 18:26:51,306 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 18:26:51,306 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 18:26:51,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl [2021-08-13 18:26:51,307 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl' [2021-08-13 18:26:51,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 18:26:51,336 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 18:26:51,337 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 18:26:51,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 18:26:51,337 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 18:26:51,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:26:51" (1/1) ... [2021-08-13 18:26:51,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:26:51" (1/1) ... [2021-08-13 18:26:51,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 18:26:51,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 18:26:51,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 18:26:51,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 18:26:51,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:26:51" (1/1) ... [2021-08-13 18:26:51,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:26:51" (1/1) ... [2021-08-13 18:26:51,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:26:51" (1/1) ... [2021-08-13 18:26:51,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:26:51" (1/1) ... [2021-08-13 18:26:51,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:26:51" (1/1) ... [2021-08-13 18:26:51,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:26:51" (1/1) ... [2021-08-13 18:26:51,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:26:51" (1/1) ... [2021-08-13 18:26:51,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 18:26:51,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 18:26:51,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 18:26:51,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 18:26:51,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:26:51" (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 18:26:51,449 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-13 18:26:51,449 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-13 18:26:51,449 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-13 18:26:51,450 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-13 18:26:51,450 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-13 18:26:51,450 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-13 18:26:51,450 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 18:26:51,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 18:26:51,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 18:26:51,451 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-13 18:26:51,451 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-13 18:26:51,451 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-13 18:26:51,453 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 18:26:51,612 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 18:26:51,613 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 18:26:51,614 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 06:26:51 BoogieIcfgContainer [2021-08-13 18:26:51,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 18:26:51,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 18:26:51,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 18:26:51,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 18:26:51,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:26:51" (1/2) ... [2021-08-13 18:26:51,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55cfad66 and model type bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 06:26:51, skipping insertion in model container [2021-08-13 18:26:51,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 06:26:51" (2/2) ... [2021-08-13 18:26:51,620 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-3.wvr.bpl [2021-08-13 18:26:51,625 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 18:26:51,625 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 18:26:51,626 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 18:26:51,664 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-08-13 18:26:51,683 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-13 18:26:51,700 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 18:26:51,700 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 18:26:51,700 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 18:26:51,700 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 18:26:51,701 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 18:26:51,701 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 18:26:51,701 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 18:26:51,701 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 18:26:51,711 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 53 transitions, 130 flow [2021-08-13 18:26:51,766 INFO L129 PetriNetUnfolder]: 0/50 cut-off events. [2021-08-13 18:26:51,766 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-08-13 18:26:51,768 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 0/50 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 79 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-08-13 18:26:51,784 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 53 transitions, 130 flow [2021-08-13 18:26:51,789 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 48 transitions, 114 flow [2021-08-13 18:26:51,821 INFO L129 PetriNetUnfolder]: 0/47 cut-off events. [2021-08-13 18:26:51,821 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-08-13 18:26:51,821 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:26:51,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:26:51,822 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:26:51,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:26:51,827 INFO L82 PathProgramCache]: Analyzing trace with hash 2013229232, now seen corresponding path program 1 times [2021-08-13 18:26:51,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:26:51,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982773243] [2021-08-13 18:26:51,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:26:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:26:52,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:52,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:26:52,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:52,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:26:52,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:52,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:26:52,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:52,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:26:52,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:52,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:26:52,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:52,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:26:52,220 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-08-13 18:26:52,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:26:52,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:52,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:26:52,240 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 18:26:52,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:26:52,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982773243] [2021-08-13 18:26:52,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982773243] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:26:52,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:26:52,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:26:52,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854737437] [2021-08-13 18:26:52,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:26:52,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:26:52,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:26:52,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:26:52,275 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 53 [2021-08-13 18:26:52,282 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 114 flow. Second operand has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:52,282 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:26:52,283 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 53 [2021-08-13 18:26:52,284 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:26:52,614 INFO L129 PetriNetUnfolder]: 29/215 cut-off events. [2021-08-13 18:26:52,614 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2021-08-13 18:26:52,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 215 events. 29/215 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1169 event pairs, 3 based on Foata normal form. 1/215 useless extension candidates. Maximal degree in co-relation 291. Up to 28 conditions per place. [2021-08-13 18:26:52,621 INFO L132 encePairwiseOnDemand]: 45/53 looper letters, 21 selfloop transitions, 15 changer transitions 2/78 dead transitions. [2021-08-13 18:26:52,621 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 78 transitions, 250 flow [2021-08-13 18:26:52,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 18:26:52,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 18:26:52,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 523 transitions. [2021-08-13 18:26:52,638 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8970840480274442 [2021-08-13 18:26:52,639 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 523 transitions. [2021-08-13 18:26:52,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 523 transitions. [2021-08-13 18:26:52,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:26:52,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 523 transitions. [2021-08-13 18:26:52,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 47.54545454545455) internal successors, (523), 11 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:52,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:52,667 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:52,668 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2021-08-13 18:26:52,668 INFO L482 AbstractCegarLoop]: Abstraction has has 68 places, 78 transitions, 250 flow [2021-08-13 18:26:52,669 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:52,669 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:26:52,669 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:26:52,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 18:26:52,669 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:26:52,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:26:52,671 INFO L82 PathProgramCache]: Analyzing trace with hash -99645260, now seen corresponding path program 2 times [2021-08-13 18:26:52,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:26:52,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664994249] [2021-08-13 18:26:52,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:26:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:26:52,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:52,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:26:52,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:52,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:26:52,820 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-08-13 18:26:52,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-08-13 18:26:52,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:52,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:26:52,861 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-08-13 18:26:52,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 18:26:52,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:52,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:26:52,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:52,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:26:52,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:52,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:26:52,894 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 18:26:52,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:26:52,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664994249] [2021-08-13 18:26:52,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664994249] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:26:52,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:26:52,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:26:52,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196677063] [2021-08-13 18:26:52,897 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:26:52,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:26:52,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:26:52,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:26:52,906 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:26:52,907 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 78 transitions, 250 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:52,907 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:26:52,908 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:26:52,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:26:53,642 INFO L129 PetriNetUnfolder]: 1281/3313 cut-off events. [2021-08-13 18:26:53,643 INFO L130 PetriNetUnfolder]: For 133/133 co-relation queries the response was YES. [2021-08-13 18:26:53,654 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5964 conditions, 3313 events. 1281/3313 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 27393 event pairs, 277 based on Foata normal form. 39/3219 useless extension candidates. Maximal degree in co-relation 5919. Up to 1219 conditions per place. [2021-08-13 18:26:53,671 INFO L132 encePairwiseOnDemand]: 39/53 looper letters, 83 selfloop transitions, 40 changer transitions 2/182 dead transitions. [2021-08-13 18:26:53,675 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 182 transitions, 704 flow [2021-08-13 18:26:53,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 18:26:53,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 18:26:53,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 557 transitions. [2021-08-13 18:26:53,678 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8084179970972424 [2021-08-13 18:26:53,678 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 557 transitions. [2021-08-13 18:26:53,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 557 transitions. [2021-08-13 18:26:53,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:26:53,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 557 transitions. [2021-08-13 18:26:53,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 42.84615384615385) internal successors, (557), 13 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:53,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 53.0) internal successors, (742), 14 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:53,682 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 53.0) internal successors, (742), 14 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:53,683 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 22 predicate places. [2021-08-13 18:26:53,683 INFO L482 AbstractCegarLoop]: Abstraction has has 80 places, 182 transitions, 704 flow [2021-08-13 18:26:53,684 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:53,684 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:26:53,684 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:26:53,685 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 18:26:53,685 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:26:53,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:26:53,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1866232154, now seen corresponding path program 3 times [2021-08-13 18:26:53,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:26:53,687 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225322763] [2021-08-13 18:26:53,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:26:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:26:53,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:53,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:26:53,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:53,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:26:53,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:53,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:26:53,731 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 18:26:53,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:26:53,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225322763] [2021-08-13 18:26:53,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225322763] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:26:53,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:26:53,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 18:26:53,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880626340] [2021-08-13 18:26:53,733 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 18:26:53,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:26:53,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 18:26:53,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 18:26:53,734 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 53 [2021-08-13 18:26:53,734 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 182 transitions, 704 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:53,734 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:26:53,734 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 53 [2021-08-13 18:26:53,734 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:26:53,969 INFO L129 PetriNetUnfolder]: 1331/3454 cut-off events. [2021-08-13 18:26:53,970 INFO L130 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2021-08-13 18:26:53,981 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6349 conditions, 3454 events. 1331/3454 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 28590 event pairs, 429 based on Foata normal form. 74/3378 useless extension candidates. Maximal degree in co-relation 6302. Up to 1306 conditions per place. [2021-08-13 18:26:53,997 INFO L132 encePairwiseOnDemand]: 49/53 looper letters, 3 selfloop transitions, 2 changer transitions 2/180 dead transitions. [2021-08-13 18:26:53,998 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 180 transitions, 706 flow [2021-08-13 18:26:53,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 18:26:53,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 18:26:53,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2021-08-13 18:26:53,999 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9308176100628931 [2021-08-13 18:26:53,999 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 148 transitions. [2021-08-13 18:26:53,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 148 transitions. [2021-08-13 18:26:53,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:26:53,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 148 transitions. [2021-08-13 18:26:54,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:54,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:54,001 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:54,001 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 24 predicate places. [2021-08-13 18:26:54,001 INFO L482 AbstractCegarLoop]: Abstraction has has 82 places, 180 transitions, 706 flow [2021-08-13 18:26:54,001 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:54,001 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:26:54,002 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:26:54,002 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 18:26:54,002 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:26:54,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:26:54,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1016085346, now seen corresponding path program 4 times [2021-08-13 18:26:54,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:26:54,003 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613169233] [2021-08-13 18:26:54,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:26:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:26:54,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:54,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:26:54,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:54,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:26:54,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:54,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:26:54,021 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 18:26:54,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:26:54,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613169233] [2021-08-13 18:26:54,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613169233] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:26:54,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:26:54,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 18:26:54,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74950642] [2021-08-13 18:26:54,022 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 18:26:54,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:26:54,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 18:26:54,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 18:26:54,023 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 53 [2021-08-13 18:26:54,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 180 transitions, 706 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:54,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:26:54,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 53 [2021-08-13 18:26:54,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:26:54,342 INFO L129 PetriNetUnfolder]: 1439/3711 cut-off events. [2021-08-13 18:26:54,343 INFO L130 PetriNetUnfolder]: For 149/149 co-relation queries the response was YES. [2021-08-13 18:26:54,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6976 conditions, 3711 events. 1439/3711 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 31412 event pairs, 604 based on Foata normal form. 67/3595 useless extension candidates. Maximal degree in co-relation 6927. Up to 1437 conditions per place. [2021-08-13 18:26:54,371 INFO L132 encePairwiseOnDemand]: 49/53 looper letters, 3 selfloop transitions, 2 changer transitions 2/180 dead transitions. [2021-08-13 18:26:54,371 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 180 transitions, 716 flow [2021-08-13 18:26:54,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 18:26:54,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 18:26:54,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2021-08-13 18:26:54,372 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9308176100628931 [2021-08-13 18:26:54,373 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 148 transitions. [2021-08-13 18:26:54,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 148 transitions. [2021-08-13 18:26:54,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:26:54,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 148 transitions. [2021-08-13 18:26:54,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:54,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:54,374 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:54,374 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 26 predicate places. [2021-08-13 18:26:54,374 INFO L482 AbstractCegarLoop]: Abstraction has has 84 places, 180 transitions, 716 flow [2021-08-13 18:26:54,374 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:54,374 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:26:54,374 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:26:54,375 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 18:26:54,375 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:26:54,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:26:54,375 INFO L82 PathProgramCache]: Analyzing trace with hash -789570444, now seen corresponding path program 5 times [2021-08-13 18:26:54,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:26:54,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884606832] [2021-08-13 18:26:54,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:26:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:26:54,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:54,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:26:54,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:54,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:26:54,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:54,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:26:54,393 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 18:26:54,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:26:54,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884606832] [2021-08-13 18:26:54,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884606832] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:26:54,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:26:54,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 18:26:54,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074494725] [2021-08-13 18:26:54,394 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 18:26:54,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:26:54,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 18:26:54,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 18:26:54,395 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 53 [2021-08-13 18:26:54,395 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 180 transitions, 716 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:54,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:26:54,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 53 [2021-08-13 18:26:54,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:26:54,690 INFO L129 PetriNetUnfolder]: 1548/4089 cut-off events. [2021-08-13 18:26:54,691 INFO L130 PetriNetUnfolder]: For 166/166 co-relation queries the response was YES. [2021-08-13 18:26:54,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7811 conditions, 4089 events. 1548/4089 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 35523 event pairs, 720 based on Foata normal form. 42/3912 useless extension candidates. Maximal degree in co-relation 7760. Up to 1608 conditions per place. [2021-08-13 18:26:54,723 INFO L132 encePairwiseOnDemand]: 49/53 looper letters, 3 selfloop transitions, 2 changer transitions 2/180 dead transitions. [2021-08-13 18:26:54,723 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 180 transitions, 726 flow [2021-08-13 18:26:54,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 18:26:54,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 18:26:54,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2021-08-13 18:26:54,724 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9308176100628931 [2021-08-13 18:26:54,724 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 148 transitions. [2021-08-13 18:26:54,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 148 transitions. [2021-08-13 18:26:54,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:26:54,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 148 transitions. [2021-08-13 18:26:54,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:54,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:54,726 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:54,726 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2021-08-13 18:26:54,726 INFO L482 AbstractCegarLoop]: Abstraction has has 86 places, 180 transitions, 726 flow [2021-08-13 18:26:54,726 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:54,726 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:26:54,726 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:26:54,726 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 18:26:54,727 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:26:54,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:26:54,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1070790412, now seen corresponding path program 6 times [2021-08-13 18:26:54,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:26:54,727 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286380445] [2021-08-13 18:26:54,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:26:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:26:54,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:54,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:26:54,771 INFO L142 QuantifierPusher]: treesize reduction 25, result has 44.4 percent of original size [2021-08-13 18:26:54,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-08-13 18:26:54,775 INFO L142 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-08-13 18:26:54,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:26:54,781 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-08-13 18:26:54,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:26:54,783 INFO L142 QuantifierPusher]: treesize reduction 15, result has 48.3 percent of original size [2021-08-13 18:26:54,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:26:54,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:54,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:26:54,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:54,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:26:54,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:54,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:26:54,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:54,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:26:54,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:54,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:26:54,830 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 18:26:54,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:26:54,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286380445] [2021-08-13 18:26:54,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286380445] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:26:54,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:26:54,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:26:54,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113323226] [2021-08-13 18:26:54,832 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:26:54,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:26:54,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:26:54,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:26:54,833 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:26:54,833 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 180 transitions, 726 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:54,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:26:54,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:26:54,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:26:55,512 INFO L129 PetriNetUnfolder]: 1981/4874 cut-off events. [2021-08-13 18:26:55,513 INFO L130 PetriNetUnfolder]: For 1006/1646 co-relation queries the response was YES. [2021-08-13 18:26:55,531 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12386 conditions, 4874 events. 1981/4874 cut-off events. For 1006/1646 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 42239 event pairs, 446 based on Foata normal form. 91/4738 useless extension candidates. Maximal degree in co-relation 12333. Up to 2092 conditions per place. [2021-08-13 18:26:55,557 INFO L132 encePairwiseOnDemand]: 42/53 looper letters, 165 selfloop transitions, 42 changer transitions 2/266 dead transitions. [2021-08-13 18:26:55,557 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 266 transitions, 1484 flow [2021-08-13 18:26:55,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:26:55,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:26:55,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 337 transitions. [2021-08-13 18:26:55,559 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7948113207547169 [2021-08-13 18:26:55,559 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 337 transitions. [2021-08-13 18:26:55,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 337 transitions. [2021-08-13 18:26:55,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:26:55,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 337 transitions. [2021-08-13 18:26:55,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 42.125) internal successors, (337), 8 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:55,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:55,561 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:55,562 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 35 predicate places. [2021-08-13 18:26:55,562 INFO L482 AbstractCegarLoop]: Abstraction has has 93 places, 266 transitions, 1484 flow [2021-08-13 18:26:55,562 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:55,562 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:26:55,562 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:26:55,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 18:26:55,563 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:26:55,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:26:55,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1898931862, now seen corresponding path program 7 times [2021-08-13 18:26:55,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:26:55,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625064257] [2021-08-13 18:26:55,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:26:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:26:55,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:55,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-08-13 18:26:55,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:55,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 18:26:55,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:55,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:26:55,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:55,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:26:55,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:55,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:26:55,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:55,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:26:55,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:55,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:26:55,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:55,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:26:55,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:55,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:26:55,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:55,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:26:55,771 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 18:26:55,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:26:55,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625064257] [2021-08-13 18:26:55,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625064257] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:26:55,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:26:55,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 18:26:55,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172466445] [2021-08-13 18:26:55,772 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 18:26:55,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:26:55,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 18:26:55,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-08-13 18:26:55,773 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:26:55,774 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 266 transitions, 1484 flow. Second operand has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:55,774 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:26:55,774 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:26:55,774 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:26:56,662 INFO L129 PetriNetUnfolder]: 2845/6972 cut-off events. [2021-08-13 18:26:56,663 INFO L130 PetriNetUnfolder]: For 4487/6379 co-relation queries the response was YES. [2021-08-13 18:26:56,691 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21783 conditions, 6972 events. 2845/6972 cut-off events. For 4487/6379 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 64184 event pairs, 374 based on Foata normal form. 213/6917 useless extension candidates. Maximal degree in co-relation 21701. Up to 3066 conditions per place. [2021-08-13 18:26:56,731 INFO L132 encePairwiseOnDemand]: 40/53 looper letters, 292 selfloop transitions, 125 changer transitions 0/476 dead transitions. [2021-08-13 18:26:56,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 476 transitions, 3578 flow [2021-08-13 18:26:56,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 18:26:56,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 18:26:56,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 429 transitions. [2021-08-13 18:26:56,733 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.809433962264151 [2021-08-13 18:26:56,733 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 429 transitions. [2021-08-13 18:26:56,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 429 transitions. [2021-08-13 18:26:56,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:26:56,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 429 transitions. [2021-08-13 18:26:56,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 42.9) internal successors, (429), 10 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:56,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:56,736 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:56,736 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 44 predicate places. [2021-08-13 18:26:56,736 INFO L482 AbstractCegarLoop]: Abstraction has has 102 places, 476 transitions, 3578 flow [2021-08-13 18:26:56,737 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:56,737 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:26:56,737 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:26:56,737 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 18:26:56,737 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:26:56,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:26:56,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1317854256, now seen corresponding path program 8 times [2021-08-13 18:26:56,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:26:56,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712507976] [2021-08-13 18:26:56,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:26:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:26:56,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:56,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:26:56,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:56,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:26:56,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:56,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:26:56,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:56,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:26:56,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:56,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:26:56,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:56,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:26:56,814 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-08-13 18:26:56,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:26:56,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:56,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:26:56,825 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 18:26:56,825 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:26:56,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712507976] [2021-08-13 18:26:56,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712507976] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:26:56,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:26:56,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:26:56,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109127840] [2021-08-13 18:26:56,826 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:26:56,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:26:56,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:26:56,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:26:56,827 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 53 [2021-08-13 18:26:56,828 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 476 transitions, 3578 flow. Second operand has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:56,828 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:26:56,828 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 53 [2021-08-13 18:26:56,828 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:26:57,861 INFO L129 PetriNetUnfolder]: 2959/7645 cut-off events. [2021-08-13 18:26:57,861 INFO L130 PetriNetUnfolder]: For 5430/7522 co-relation queries the response was YES. [2021-08-13 18:26:57,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25097 conditions, 7645 events. 2959/7645 cut-off events. For 5430/7522 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 72866 event pairs, 367 based on Foata normal form. 154/7536 useless extension candidates. Maximal degree in co-relation 24915. Up to 3347 conditions per place. [2021-08-13 18:26:57,930 INFO L132 encePairwiseOnDemand]: 45/53 looper letters, 44 selfloop transitions, 25 changer transitions 0/507 dead transitions. [2021-08-13 18:26:57,930 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 507 transitions, 3840 flow [2021-08-13 18:26:57,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 18:26:57,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 18:26:57,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 523 transitions. [2021-08-13 18:26:57,932 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8970840480274442 [2021-08-13 18:26:57,932 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 523 transitions. [2021-08-13 18:26:57,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 523 transitions. [2021-08-13 18:26:57,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:26:57,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 523 transitions. [2021-08-13 18:26:57,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 47.54545454545455) internal successors, (523), 11 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:57,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:57,935 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:57,935 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 54 predicate places. [2021-08-13 18:26:57,936 INFO L482 AbstractCegarLoop]: Abstraction has has 112 places, 507 transitions, 3840 flow [2021-08-13 18:26:57,936 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:57,936 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:26:57,936 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:26:57,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 18:26:57,936 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:26:57,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:26:57,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1871065322, now seen corresponding path program 9 times [2021-08-13 18:26:57,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:26:57,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433958230] [2021-08-13 18:26:57,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:26:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:26:57,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:57,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:26:57,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:57,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:26:58,000 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-08-13 18:26:58,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:26:58,007 INFO L142 QuantifierPusher]: treesize reduction 36, result has 28.0 percent of original size [2021-08-13 18:26:58,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:26:58,022 INFO L142 QuantifierPusher]: treesize reduction 14, result has 56.3 percent of original size [2021-08-13 18:26:58,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-08-13 18:26:58,047 INFO L142 QuantifierPusher]: treesize reduction 24, result has 40.0 percent of original size [2021-08-13 18:26:58,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:26:58,063 INFO L142 QuantifierPusher]: treesize reduction 28, result has 30.0 percent of original size [2021-08-13 18:26:58,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 18:26:58,066 INFO L142 QuantifierPusher]: treesize reduction 22, result has 4.3 percent of original size [2021-08-13 18:26:58,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:26:58,068 INFO L142 QuantifierPusher]: treesize reduction 38, result has 2.6 percent of original size [2021-08-13 18:26:58,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:26:58,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:58,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:26:58,070 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 18:26:58,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:26:58,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433958230] [2021-08-13 18:26:58,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433958230] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:26:58,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:26:58,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:26:58,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044493612] [2021-08-13 18:26:58,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:26:58,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:26:58,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:26:58,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:26:58,076 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:26:58,076 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 507 transitions, 3840 flow. Second operand has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:58,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:26:58,076 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:26:58,077 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:26:59,850 INFO L129 PetriNetUnfolder]: 4623/12380 cut-off events. [2021-08-13 18:26:59,850 INFO L130 PetriNetUnfolder]: For 17314/23124 co-relation queries the response was YES. [2021-08-13 18:26:59,890 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46950 conditions, 12380 events. 4623/12380 cut-off events. For 17314/23124 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 131639 event pairs, 566 based on Foata normal form. 455/12341 useless extension candidates. Maximal degree in co-relation 46614. Up to 5518 conditions per place. [2021-08-13 18:26:59,946 INFO L132 encePairwiseOnDemand]: 38/53 looper letters, 621 selfloop transitions, 228 changer transitions 1/940 dead transitions. [2021-08-13 18:26:59,946 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 940 transitions, 9004 flow [2021-08-13 18:26:59,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 18:26:59,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 18:26:59,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 536 transitions. [2021-08-13 18:26:59,948 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8427672955974843 [2021-08-13 18:26:59,948 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 536 transitions. [2021-08-13 18:26:59,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 536 transitions. [2021-08-13 18:26:59,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:26:59,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 536 transitions. [2021-08-13 18:26:59,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 44.666666666666664) internal successors, (536), 12 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:59,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:59,951 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:59,951 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 65 predicate places. [2021-08-13 18:26:59,951 INFO L482 AbstractCegarLoop]: Abstraction has has 123 places, 940 transitions, 9004 flow [2021-08-13 18:26:59,952 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:26:59,952 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:26:59,952 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:26:59,952 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 18:26:59,952 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:26:59,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:26:59,953 INFO L82 PathProgramCache]: Analyzing trace with hash -876458430, now seen corresponding path program 10 times [2021-08-13 18:26:59,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:26:59,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617246800] [2021-08-13 18:26:59,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:26:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:26:59,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:59,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 18:26:59,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:59,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 18:26:59,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:59,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:26:59,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:26:59,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:27:00,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:00,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:27:00,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:00,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:00,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:00,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:00,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:00,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:00,036 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-08-13 18:27:00,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:00,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:00,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:27:00,045 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 18:27:00,045 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:27:00,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617246800] [2021-08-13 18:27:00,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617246800] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:27:00,045 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:27:00,045 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:27:00,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578177311] [2021-08-13 18:27:00,046 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:27:00,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:27:00,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:27:00,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:27:00,047 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:27:00,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 940 transitions, 9004 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:00,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:27:00,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:27:00,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:27:01,868 INFO L129 PetriNetUnfolder]: 3625/10352 cut-off events. [2021-08-13 18:27:01,868 INFO L130 PetriNetUnfolder]: For 21358/27509 co-relation queries the response was YES. [2021-08-13 18:27:01,912 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45021 conditions, 10352 events. 3625/10352 cut-off events. For 21358/27509 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 110577 event pairs, 478 based on Foata normal form. 560/10542 useless extension candidates. Maximal degree in co-relation 44683. Up to 4497 conditions per place. [2021-08-13 18:27:02,017 INFO L132 encePairwiseOnDemand]: 43/53 looper letters, 713 selfloop transitions, 141 changer transitions 4/946 dead transitions. [2021-08-13 18:27:02,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 946 transitions, 10776 flow [2021-08-13 18:27:02,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 18:27:02,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 18:27:02,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 369 transitions. [2021-08-13 18:27:02,019 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7735849056603774 [2021-08-13 18:27:02,019 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 369 transitions. [2021-08-13 18:27:02,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 369 transitions. [2021-08-13 18:27:02,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:27:02,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 369 transitions. [2021-08-13 18:27:02,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 41.0) internal successors, (369), 9 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:02,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:02,021 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:02,021 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 73 predicate places. [2021-08-13 18:27:02,022 INFO L482 AbstractCegarLoop]: Abstraction has has 131 places, 946 transitions, 10776 flow [2021-08-13 18:27:02,022 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:02,022 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:27:02,022 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:27:02,022 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 18:27:02,022 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:27:02,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:27:02,023 INFO L82 PathProgramCache]: Analyzing trace with hash 945415878, now seen corresponding path program 11 times [2021-08-13 18:27:02,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:27:02,024 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125691069] [2021-08-13 18:27:02,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:27:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:27:02,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:02,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:02,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:02,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:02,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:02,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:02,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:02,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:02,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:02,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:02,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:02,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:02,175 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-08-13 18:27:02,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:02,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:02,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:27:02,188 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 18:27:02,188 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:27:02,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125691069] [2021-08-13 18:27:02,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125691069] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:27:02,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:27:02,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:27:02,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923123051] [2021-08-13 18:27:02,189 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:27:02,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:27:02,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:27:02,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:27:02,190 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 53 [2021-08-13 18:27:02,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 946 transitions, 10776 flow. Second operand has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:02,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:27:02,191 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 53 [2021-08-13 18:27:02,191 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:27:04,051 INFO L129 PetriNetUnfolder]: 3678/10832 cut-off events. [2021-08-13 18:27:04,052 INFO L130 PetriNetUnfolder]: For 23070/28567 co-relation queries the response was YES. [2021-08-13 18:27:04,082 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48507 conditions, 10832 events. 3678/10832 cut-off events. For 23070/28567 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 117815 event pairs, 474 based on Foata normal form. 395/10850 useless extension candidates. Maximal degree in co-relation 47999. Up to 4695 conditions per place. [2021-08-13 18:27:04,120 INFO L132 encePairwiseOnDemand]: 45/53 looper letters, 49 selfloop transitions, 34 changer transitions 53/962 dead transitions. [2021-08-13 18:27:04,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 962 transitions, 11042 flow [2021-08-13 18:27:04,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 18:27:04,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 18:27:04,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 523 transitions. [2021-08-13 18:27:04,122 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8970840480274442 [2021-08-13 18:27:04,122 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 523 transitions. [2021-08-13 18:27:04,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 523 transitions. [2021-08-13 18:27:04,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:27:04,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 523 transitions. [2021-08-13 18:27:04,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 47.54545454545455) internal successors, (523), 11 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:04,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:04,125 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:04,125 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 83 predicate places. [2021-08-13 18:27:04,125 INFO L482 AbstractCegarLoop]: Abstraction has has 141 places, 962 transitions, 11042 flow [2021-08-13 18:27:04,125 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:04,125 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:27:04,125 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:27:04,126 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 18:27:04,126 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:27:04,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:27:04,126 INFO L82 PathProgramCache]: Analyzing trace with hash -516899344, now seen corresponding path program 12 times [2021-08-13 18:27:04,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:27:04,126 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363799966] [2021-08-13 18:27:04,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:27:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:27:04,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:04,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 18:27:04,174 INFO L142 QuantifierPusher]: treesize reduction 26, result has 59.4 percent of original size [2021-08-13 18:27:04,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-08-13 18:27:04,178 INFO L142 QuantifierPusher]: treesize reduction 6, result has 72.7 percent of original size [2021-08-13 18:27:04,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:27:04,181 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-08-13 18:27:04,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:27:04,184 INFO L142 QuantifierPusher]: treesize reduction 7, result has 65.0 percent of original size [2021-08-13 18:27:04,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:27:04,187 INFO L142 QuantifierPusher]: treesize reduction 14, result has 60.0 percent of original size [2021-08-13 18:27:04,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:27:04,201 INFO L142 QuantifierPusher]: treesize reduction 17, result has 37.0 percent of original size [2021-08-13 18:27:04,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:27:04,209 INFO L142 QuantifierPusher]: treesize reduction 17, result has 37.0 percent of original size [2021-08-13 18:27:04,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:27:04,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:04,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:27:04,218 INFO L142 QuantifierPusher]: treesize reduction 1, result has 94.1 percent of original size [2021-08-13 18:27:04,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:27:04,233 INFO L142 QuantifierPusher]: treesize reduction 13, result has 61.8 percent of original size [2021-08-13 18:27:04,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:27:04,252 INFO L142 QuantifierPusher]: treesize reduction 28, result has 44.0 percent of original size [2021-08-13 18:27:04,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-08-13 18:27:04,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:04,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:27:04,271 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 18:27:04,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:27:04,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363799966] [2021-08-13 18:27:04,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363799966] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:27:04,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:27:04,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:27:04,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130376514] [2021-08-13 18:27:04,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:27:04,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:27:04,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:27:04,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:27:04,273 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:27:04,274 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 962 transitions, 11042 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:04,274 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:27:04,274 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:27:04,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:27:06,301 INFO L129 PetriNetUnfolder]: 4275/12819 cut-off events. [2021-08-13 18:27:06,301 INFO L130 PetriNetUnfolder]: For 42139/51817 co-relation queries the response was YES. [2021-08-13 18:27:06,359 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64422 conditions, 12819 events. 4275/12819 cut-off events. For 42139/51817 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 144547 event pairs, 538 based on Foata normal form. 383/12771 useless extension candidates. Maximal degree in co-relation 63822. Up to 5885 conditions per place. [2021-08-13 18:27:06,422 INFO L132 encePairwiseOnDemand]: 42/53 looper letters, 935 selfloop transitions, 122 changer transitions 59/1220 dead transitions. [2021-08-13 18:27:06,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 1220 transitions, 16366 flow [2021-08-13 18:27:06,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:27:06,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:27:06,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 341 transitions. [2021-08-13 18:27:06,424 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8042452830188679 [2021-08-13 18:27:06,424 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 341 transitions. [2021-08-13 18:27:06,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 341 transitions. [2021-08-13 18:27:06,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:27:06,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 341 transitions. [2021-08-13 18:27:06,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 42.625) internal successors, (341), 8 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:06,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:06,427 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:06,427 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 90 predicate places. [2021-08-13 18:27:06,427 INFO L482 AbstractCegarLoop]: Abstraction has has 148 places, 1220 transitions, 16366 flow [2021-08-13 18:27:06,428 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:06,428 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:27:06,428 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:27:06,428 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-13 18:27:06,428 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:27:06,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:27:06,428 INFO L82 PathProgramCache]: Analyzing trace with hash 738333274, now seen corresponding path program 13 times [2021-08-13 18:27:06,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:27:06,429 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734792503] [2021-08-13 18:27:06,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:27:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:27:06,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:06,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:06,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:06,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:06,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:06,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:06,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:06,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:06,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:06,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:06,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:06,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:06,518 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-08-13 18:27:06,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:06,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:06,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:27:06,535 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 18:27:06,535 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:27:06,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734792503] [2021-08-13 18:27:06,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734792503] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:27:06,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:27:06,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:27:06,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201974864] [2021-08-13 18:27:06,536 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:27:06,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:27:06,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:27:06,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:27:06,539 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 53 [2021-08-13 18:27:06,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 1220 transitions, 16366 flow. Second operand has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:06,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:27:06,540 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 53 [2021-08-13 18:27:06,540 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:27:09,410 INFO L129 PetriNetUnfolder]: 4339/13512 cut-off events. [2021-08-13 18:27:09,410 INFO L130 PetriNetUnfolder]: For 46656/57140 co-relation queries the response was YES. [2021-08-13 18:27:09,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69505 conditions, 13512 events. 4339/13512 cut-off events. For 46656/57140 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 155671 event pairs, 507 based on Foata normal form. 456/13538 useless extension candidates. Maximal degree in co-relation 68561. Up to 6113 conditions per place. [2021-08-13 18:27:09,496 INFO L132 encePairwiseOnDemand]: 45/53 looper letters, 79 selfloop transitions, 45 changer transitions 59/1261 dead transitions. [2021-08-13 18:27:09,496 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 1261 transitions, 16946 flow [2021-08-13 18:27:09,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 18:27:09,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 18:27:09,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 523 transitions. [2021-08-13 18:27:09,497 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8970840480274442 [2021-08-13 18:27:09,498 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 523 transitions. [2021-08-13 18:27:09,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 523 transitions. [2021-08-13 18:27:09,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:27:09,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 523 transitions. [2021-08-13 18:27:09,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 47.54545454545455) internal successors, (523), 11 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:09,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:09,500 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:09,501 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 100 predicate places. [2021-08-13 18:27:09,501 INFO L482 AbstractCegarLoop]: Abstraction has has 158 places, 1261 transitions, 16946 flow [2021-08-13 18:27:09,501 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:09,501 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:27:09,501 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:27:09,501 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-13 18:27:09,501 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:27:09,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:27:09,502 INFO L82 PathProgramCache]: Analyzing trace with hash -551834758, now seen corresponding path program 14 times [2021-08-13 18:27:09,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:27:09,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534892645] [2021-08-13 18:27:09,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:27:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:27:09,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:09,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:27:09,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:09,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:27:09,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:09,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:27:09,554 INFO L142 QuantifierPusher]: treesize reduction 35, result has 30.0 percent of original size [2021-08-13 18:27:09,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:27:09,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:09,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:27:09,568 INFO L142 QuantifierPusher]: treesize reduction 10, result has 58.3 percent of original size [2021-08-13 18:27:09,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:27:09,580 INFO L142 QuantifierPusher]: treesize reduction 10, result has 61.5 percent of original size [2021-08-13 18:27:09,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:27:09,592 INFO L142 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-08-13 18:27:09,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:27:09,604 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-08-13 18:27:09,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:27:09,620 INFO L142 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-08-13 18:27:09,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:27:09,628 INFO L142 QuantifierPusher]: treesize reduction 26, result has 36.6 percent of original size [2021-08-13 18:27:09,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:27:09,629 INFO L142 QuantifierPusher]: treesize reduction 13, result has 7.1 percent of original size [2021-08-13 18:27:09,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:27:09,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:09,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:27:09,630 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 18:27:09,630 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:27:09,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534892645] [2021-08-13 18:27:09,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534892645] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:27:09,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:27:09,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:27:09,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358877006] [2021-08-13 18:27:09,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:27:09,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:27:09,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:27:09,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:27:09,632 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:27:09,632 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 1261 transitions, 16946 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:09,632 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:27:09,632 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:27:09,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:27:12,974 INFO L129 PetriNetUnfolder]: 4749/16635 cut-off events. [2021-08-13 18:27:12,974 INFO L130 PetriNetUnfolder]: For 79390/96066 co-relation queries the response was YES. [2021-08-13 18:27:13,036 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91075 conditions, 16635 events. 4749/16635 cut-off events. For 79390/96066 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 208816 event pairs, 589 based on Foata normal form. 958/17043 useless extension candidates. Maximal degree in co-relation 89445. Up to 7647 conditions per place. [2021-08-13 18:27:13,098 INFO L132 encePairwiseOnDemand]: 39/53 looper letters, 959 selfloop transitions, 203 changer transitions 154/1461 dead transitions. [2021-08-13 18:27:13,098 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 1461 transitions, 22374 flow [2021-08-13 18:27:13,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 18:27:13,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 18:27:13,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 395 transitions. [2021-08-13 18:27:13,099 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8280922431865828 [2021-08-13 18:27:13,100 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 395 transitions. [2021-08-13 18:27:13,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 395 transitions. [2021-08-13 18:27:13,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:27:13,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 395 transitions. [2021-08-13 18:27:13,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 43.888888888888886) internal successors, (395), 9 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:13,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:13,102 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:13,102 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 108 predicate places. [2021-08-13 18:27:13,102 INFO L482 AbstractCegarLoop]: Abstraction has has 166 places, 1461 transitions, 22374 flow [2021-08-13 18:27:13,102 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:13,103 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:27:13,103 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:27:13,103 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-13 18:27:13,103 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:27:13,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:27:13,103 INFO L82 PathProgramCache]: Analyzing trace with hash 220293830, now seen corresponding path program 15 times [2021-08-13 18:27:13,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:27:13,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652163564] [2021-08-13 18:27:13,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:27:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:27:13,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:13,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 18:27:13,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:13,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:27:13,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:13,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:27:13,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:13,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:27:13,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:13,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:13,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:13,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:13,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:13,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:13,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:13,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:13,215 INFO L142 QuantifierPusher]: treesize reduction 11, result has 47.6 percent of original size [2021-08-13 18:27:13,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:27:13,228 INFO L142 QuantifierPusher]: treesize reduction 15, result has 37.5 percent of original size [2021-08-13 18:27:13,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:27:13,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:13,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:27:13,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:13,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:27:13,239 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 18:27:13,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:27:13,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652163564] [2021-08-13 18:27:13,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652163564] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:27:13,239 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:27:13,239 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-13 18:27:13,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067504050] [2021-08-13 18:27:13,240 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-08-13 18:27:13,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:27:13,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-13 18:27:13,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-13 18:27:13,241 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:27:13,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 1461 transitions, 22374 flow. Second operand has 11 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:13,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:27:13,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:27:13,242 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:27:17,056 INFO L129 PetriNetUnfolder]: 4877/17431 cut-off events. [2021-08-13 18:27:17,056 INFO L130 PetriNetUnfolder]: For 107016/125088 co-relation queries the response was YES. [2021-08-13 18:27:17,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104624 conditions, 17431 events. 4877/17431 cut-off events. For 107016/125088 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 222195 event pairs, 458 based on Foata normal form. 1173/18253 useless extension candidates. Maximal degree in co-relation 102992. Up to 7991 conditions per place. [2021-08-13 18:27:17,177 INFO L132 encePairwiseOnDemand]: 36/53 looper letters, 1010 selfloop transitions, 507 changer transitions 306/1970 dead transitions. [2021-08-13 18:27:17,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 1970 transitions, 34164 flow [2021-08-13 18:27:17,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-13 18:27:17,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-08-13 18:27:17,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 678 transitions. [2021-08-13 18:27:17,179 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7995283018867925 [2021-08-13 18:27:17,179 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 678 transitions. [2021-08-13 18:27:17,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 678 transitions. [2021-08-13 18:27:17,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:27:17,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 678 transitions. [2021-08-13 18:27:17,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 42.375) internal successors, (678), 16 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:17,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 53.0) internal successors, (901), 17 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:17,183 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 53.0) internal successors, (901), 17 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:17,183 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 123 predicate places. [2021-08-13 18:27:17,183 INFO L482 AbstractCegarLoop]: Abstraction has has 181 places, 1970 transitions, 34164 flow [2021-08-13 18:27:17,183 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:17,183 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:27:17,184 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:27:17,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-13 18:27:17,184 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:27:17,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:27:17,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1838210606, now seen corresponding path program 16 times [2021-08-13 18:27:17,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:27:17,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744568346] [2021-08-13 18:27:17,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:27:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:27:17,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:17,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 18:27:17,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:17,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:27:17,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:17,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:27:17,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:17,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:27:17,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:17,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:17,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:17,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:17,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:17,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:17,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:17,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:17,271 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-08-13 18:27:17,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:27:17,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:17,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:27:17,279 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 18:27:17,279 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:27:17,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744568346] [2021-08-13 18:27:17,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744568346] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:27:17,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:27:17,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 18:27:17,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136761282] [2021-08-13 18:27:17,280 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 18:27:17,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:27:17,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 18:27:17,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-08-13 18:27:17,281 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:27:17,281 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 1970 transitions, 34164 flow. Second operand has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:17,281 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:27:17,281 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:27:17,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:27:21,230 INFO L129 PetriNetUnfolder]: 4291/14247 cut-off events. [2021-08-13 18:27:21,230 INFO L130 PetriNetUnfolder]: For 106252/118332 co-relation queries the response was YES. [2021-08-13 18:27:21,278 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96209 conditions, 14247 events. 4291/14247 cut-off events. For 106252/118332 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 173676 event pairs, 436 based on Foata normal form. 892/14797 useless extension candidates. Maximal degree in co-relation 95723. Up to 6785 conditions per place. [2021-08-13 18:27:21,324 INFO L132 encePairwiseOnDemand]: 36/53 looper letters, 1047 selfloop transitions, 397 changer transitions 404/1944 dead transitions. [2021-08-13 18:27:21,325 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 1944 transitions, 37720 flow [2021-08-13 18:27:21,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 18:27:21,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 18:27:21,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 516 transitions. [2021-08-13 18:27:21,326 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2021-08-13 18:27:21,326 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 516 transitions. [2021-08-13 18:27:21,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 516 transitions. [2021-08-13 18:27:21,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:27:21,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 516 transitions. [2021-08-13 18:27:21,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 43.0) internal successors, (516), 12 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:21,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:21,329 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:21,329 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 134 predicate places. [2021-08-13 18:27:21,329 INFO L482 AbstractCegarLoop]: Abstraction has has 192 places, 1944 transitions, 37720 flow [2021-08-13 18:27:21,330 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:21,330 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:27:21,330 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:27:21,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-13 18:27:21,330 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:27:21,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:27:21,330 INFO L82 PathProgramCache]: Analyzing trace with hash 855614904, now seen corresponding path program 17 times [2021-08-13 18:27:21,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:27:21,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448497067] [2021-08-13 18:27:21,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:27:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:27:21,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:21,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 18:27:21,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:21,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 18:27:21,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:21,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:27:21,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:21,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:27:21,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:21,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:27:21,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:21,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:21,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:21,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:21,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:21,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:21,408 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-08-13 18:27:21,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:27:21,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:21,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:27:21,417 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 18:27:21,418 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:27:21,418 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448497067] [2021-08-13 18:27:21,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448497067] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:27:21,418 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:27:21,418 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:27:21,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073598722] [2021-08-13 18:27:21,418 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:27:21,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:27:21,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:27:21,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:27:21,419 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:27:21,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 1944 transitions, 37720 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:21,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:27:21,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:27:21,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:27:25,133 INFO L129 PetriNetUnfolder]: 3946/13476 cut-off events. [2021-08-13 18:27:25,134 INFO L130 PetriNetUnfolder]: For 124113/137722 co-relation queries the response was YES. [2021-08-13 18:27:25,181 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97942 conditions, 13476 events. 3946/13476 cut-off events. For 124113/137722 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 164606 event pairs, 354 based on Foata normal form. 750/13912 useless extension candidates. Maximal degree in co-relation 97454. Up to 6420 conditions per place. [2021-08-13 18:27:25,232 INFO L132 encePairwiseOnDemand]: 42/53 looper letters, 1169 selfloop transitions, 321 changer transitions 422/2008 dead transitions. [2021-08-13 18:27:25,232 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 2008 transitions, 42808 flow [2021-08-13 18:27:25,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 18:27:25,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 18:27:25,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 371 transitions. [2021-08-13 18:27:25,233 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2021-08-13 18:27:25,233 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 371 transitions. [2021-08-13 18:27:25,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 371 transitions. [2021-08-13 18:27:25,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:27:25,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 371 transitions. [2021-08-13 18:27:25,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 41.22222222222222) internal successors, (371), 9 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:25,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:25,235 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:25,235 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 142 predicate places. [2021-08-13 18:27:25,235 INFO L482 AbstractCegarLoop]: Abstraction has has 200 places, 2008 transitions, 42808 flow [2021-08-13 18:27:25,235 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:25,236 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:27:25,236 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:27:25,236 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-13 18:27:25,236 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:27:25,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:27:25,236 INFO L82 PathProgramCache]: Analyzing trace with hash -46560520, now seen corresponding path program 18 times [2021-08-13 18:27:25,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:27:25,236 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088858664] [2021-08-13 18:27:25,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:27:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:27:25,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:25,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 18:27:25,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:25,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 18:27:25,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:25,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:27:25,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:25,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:27:25,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:25,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:27:25,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:25,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:25,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:25,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:25,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:25,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:25,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:25,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:27:25,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:25,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:27:25,321 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 18:27:25,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:27:25,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088858664] [2021-08-13 18:27:25,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088858664] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:27:25,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:27:25,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:27:25,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751576668] [2021-08-13 18:27:25,322 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:27:25,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:27:25,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:27:25,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:27:25,323 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:27:25,323 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 2008 transitions, 42808 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:25,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:27:25,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:27:25,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:27:29,003 INFO L129 PetriNetUnfolder]: 3534/12257 cut-off events. [2021-08-13 18:27:29,003 INFO L130 PetriNetUnfolder]: For 134712/147435 co-relation queries the response was YES. [2021-08-13 18:27:29,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96322 conditions, 12257 events. 3534/12257 cut-off events. For 134712/147435 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 147876 event pairs, 326 based on Foata normal form. 568/12547 useless extension candidates. Maximal degree in co-relation 95928. Up to 5922 conditions per place. [2021-08-13 18:27:29,095 INFO L132 encePairwiseOnDemand]: 42/53 looper letters, 1113 selfloop transitions, 295 changer transitions 552/2056 dead transitions. [2021-08-13 18:27:29,095 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 2056 transitions, 47768 flow [2021-08-13 18:27:29,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 18:27:29,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 18:27:29,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 373 transitions. [2021-08-13 18:27:29,096 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7819706498951782 [2021-08-13 18:27:29,096 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 373 transitions. [2021-08-13 18:27:29,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 373 transitions. [2021-08-13 18:27:29,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:27:29,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 373 transitions. [2021-08-13 18:27:29,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 41.44444444444444) internal successors, (373), 9 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:29,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:29,098 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:29,098 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 150 predicate places. [2021-08-13 18:27:29,099 INFO L482 AbstractCegarLoop]: Abstraction has has 208 places, 2056 transitions, 47768 flow [2021-08-13 18:27:29,099 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:29,099 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:27:29,099 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:27:29,099 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-13 18:27:29,099 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:27:29,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:27:29,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1143813494, now seen corresponding path program 19 times [2021-08-13 18:27:29,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:27:29,100 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648074373] [2021-08-13 18:27:29,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:27:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:27:29,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:29,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:27:29,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:29,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:27:29,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:29,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:27:29,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:29,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:29,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:29,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:27:29,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:29,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:27:29,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:29,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:27:29,168 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-08-13 18:27:29,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:27:29,178 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-08-13 18:27:29,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:27:29,188 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-08-13 18:27:29,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:27:29,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:29,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:27:29,190 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 18:27:29,190 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:27:29,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648074373] [2021-08-13 18:27:29,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648074373] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:27:29,190 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:27:29,190 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 18:27:29,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703858752] [2021-08-13 18:27:29,190 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 18:27:29,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:27:29,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 18:27:29,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-13 18:27:29,191 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:27:29,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 2056 transitions, 47768 flow. Second operand has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:29,192 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:27:29,192 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:27:29,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:27:33,715 INFO L129 PetriNetUnfolder]: 3706/13103 cut-off events. [2021-08-13 18:27:33,716 INFO L130 PetriNetUnfolder]: For 176975/193515 co-relation queries the response was YES. [2021-08-13 18:27:33,771 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109378 conditions, 13103 events. 3706/13103 cut-off events. For 176975/193515 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 161413 event pairs, 338 based on Foata normal form. 489/13292 useless extension candidates. Maximal degree in co-relation 108982. Up to 6299 conditions per place. [2021-08-13 18:27:33,817 INFO L132 encePairwiseOnDemand]: 41/53 looper letters, 1273 selfloop transitions, 195 changer transitions 649/2213 dead transitions. [2021-08-13 18:27:33,817 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 2213 transitions, 55754 flow [2021-08-13 18:27:33,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 18:27:33,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 18:27:33,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 502 transitions. [2021-08-13 18:27:33,818 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.789308176100629 [2021-08-13 18:27:33,818 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 502 transitions. [2021-08-13 18:27:33,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 502 transitions. [2021-08-13 18:27:33,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:27:33,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 502 transitions. [2021-08-13 18:27:33,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 41.833333333333336) internal successors, (502), 12 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:33,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:33,820 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:33,820 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 161 predicate places. [2021-08-13 18:27:33,820 INFO L482 AbstractCegarLoop]: Abstraction has has 219 places, 2213 transitions, 55754 flow [2021-08-13 18:27:33,820 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:33,821 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:27:33,821 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:27:33,821 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-13 18:27:33,821 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:27:33,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:27:33,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1176557188, now seen corresponding path program 20 times [2021-08-13 18:27:33,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:27:33,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346035905] [2021-08-13 18:27:33,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:27:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:27:33,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:33,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:27:33,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:33,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:27:33,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:33,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:27:33,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:33,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:27:33,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:33,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:27:33,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:33,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:27:33,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:33,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 18:27:33,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:33,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 18:27:33,919 INFO L142 QuantifierPusher]: treesize reduction 10, result has 63.0 percent of original size [2021-08-13 18:27:33,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 18:27:33,934 INFO L142 QuantifierPusher]: treesize reduction 23, result has 53.1 percent of original size [2021-08-13 18:27:33,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-08-13 18:27:33,958 INFO L142 QuantifierPusher]: treesize reduction 26, result has 29.7 percent of original size [2021-08-13 18:27:33,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:27:33,969 INFO L142 QuantifierPusher]: treesize reduction 16, result has 40.7 percent of original size [2021-08-13 18:27:33,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:27:33,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:33,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:27:33,970 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 18:27:33,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:27:33,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346035905] [2021-08-13 18:27:33,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346035905] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:27:33,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:27:33,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-13 18:27:33,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121795683] [2021-08-13 18:27:33,971 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-08-13 18:27:33,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:27:33,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-13 18:27:33,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-08-13 18:27:33,972 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:27:33,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 2213 transitions, 55754 flow. Second operand has 11 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:33,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:27:33,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:27:33,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:27:42,001 INFO L129 PetriNetUnfolder]: 4782/17220 cut-off events. [2021-08-13 18:27:42,001 INFO L130 PetriNetUnfolder]: For 285093/310499 co-relation queries the response was YES. [2021-08-13 18:27:42,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152171 conditions, 17220 events. 4782/17220 cut-off events. For 285093/310499 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 224573 event pairs, 437 based on Foata normal form. 1036/17893 useless extension candidates. Maximal degree in co-relation 151669. Up to 8394 conditions per place. [2021-08-13 18:27:42,133 INFO L132 encePairwiseOnDemand]: 34/53 looper letters, 1370 selfloop transitions, 741 changer transitions 845/3052 dead transitions. [2021-08-13 18:27:42,133 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 3052 transitions, 83464 flow [2021-08-13 18:27:42,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-13 18:27:42,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-08-13 18:27:42,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1156 transitions. [2021-08-13 18:27:42,135 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8078266946191475 [2021-08-13 18:27:42,135 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1156 transitions. [2021-08-13 18:27:42,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1156 transitions. [2021-08-13 18:27:42,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:27:42,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1156 transitions. [2021-08-13 18:27:42,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 42.81481481481482) internal successors, (1156), 27 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:42,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 53.0) internal successors, (1484), 28 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:42,138 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 53.0) internal successors, (1484), 28 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:42,138 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 187 predicate places. [2021-08-13 18:27:42,138 INFO L482 AbstractCegarLoop]: Abstraction has has 245 places, 3052 transitions, 83464 flow [2021-08-13 18:27:42,139 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:42,139 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:27:42,139 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:27:42,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-13 18:27:42,139 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:27:42,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:27:42,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1919080128, now seen corresponding path program 21 times [2021-08-13 18:27:42,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:27:42,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610411693] [2021-08-13 18:27:42,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:27:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:27:42,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:42,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:42,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:42,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:42,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:42,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:42,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:42,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:42,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:42,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:42,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:42,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:42,200 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-08-13 18:27:42,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:42,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:42,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:27:42,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:27:42,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:27:42,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610411693] [2021-08-13 18:27:42,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610411693] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:27:42,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:27:42,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:27:42,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280279888] [2021-08-13 18:27:42,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:27:42,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:27:42,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:27:42,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:27:42,210 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 53 [2021-08-13 18:27:42,211 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 3052 transitions, 83464 flow. Second operand has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:42,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:27:42,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 53 [2021-08-13 18:27:42,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:27:54,885 INFO L129 PetriNetUnfolder]: 4787/17190 cut-off events. [2021-08-13 18:27:54,886 INFO L130 PetriNetUnfolder]: For 283656/305917 co-relation queries the response was YES. [2021-08-13 18:27:54,950 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155122 conditions, 17190 events. 4787/17190 cut-off events. For 283656/305917 co-relation queries the response was YES. Maximal size of possible extension queue 908. Compared 224089 event pairs, 435 based on Foata normal form. 445/17264 useless extension candidates. Maximal degree in co-relation 154630. Up to 8401 conditions per place. [2021-08-13 18:27:55,013 INFO L132 encePairwiseOnDemand]: 45/53 looper letters, 50 selfloop transitions, 25 changer transitions 935/3054 dead transitions. [2021-08-13 18:27:55,014 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 3054 transitions, 83654 flow [2021-08-13 18:27:55,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 18:27:55,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 18:27:55,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 517 transitions. [2021-08-13 18:27:55,015 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8867924528301887 [2021-08-13 18:27:55,015 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 517 transitions. [2021-08-13 18:27:55,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 517 transitions. [2021-08-13 18:27:55,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:27:55,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 517 transitions. [2021-08-13 18:27:55,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 47.0) internal successors, (517), 11 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:55,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:55,018 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:55,018 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 197 predicate places. [2021-08-13 18:27:55,018 INFO L482 AbstractCegarLoop]: Abstraction has has 255 places, 3054 transitions, 83654 flow [2021-08-13 18:27:55,018 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:55,018 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:27:55,018 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:27:55,018 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-13 18:27:55,018 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:27:55,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:27:55,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1800428364, now seen corresponding path program 22 times [2021-08-13 18:27:55,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:27:55,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421711660] [2021-08-13 18:27:55,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:27:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:27:55,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:55,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:27:55,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:55,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:27:55,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:55,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:27:55,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:55,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:55,084 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-08-13 18:27:55,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:27:55,098 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-08-13 18:27:55,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:27:55,109 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-08-13 18:27:55,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:55,117 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-08-13 18:27:55,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:27:55,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:27:55,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:27:55,123 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 18:27:55,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:27:55,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421711660] [2021-08-13 18:27:55,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421711660] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:27:55,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:27:55,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:27:55,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183199327] [2021-08-13 18:27:55,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:27:55,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:27:55,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:27:55,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:27:55,125 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:27:55,125 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 3054 transitions, 83654 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:27:55,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:27:55,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:27:55,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:28:05,971 INFO L129 PetriNetUnfolder]: 5145/18463 cut-off events. [2021-08-13 18:28:05,971 INFO L130 PetriNetUnfolder]: For 367020/395677 co-relation queries the response was YES. [2021-08-13 18:28:06,058 INFO L84 FinitePrefix]: Finished finitePrefix Result has 176451 conditions, 18463 events. 5145/18463 cut-off events. For 367020/395677 co-relation queries the response was YES. Maximal size of possible extension queue 993. Compared 243275 event pairs, 460 based on Foata normal form. 1013/19099 useless extension candidates. Maximal degree in co-relation 175957. Up to 9054 conditions per place. [2021-08-13 18:28:06,130 INFO L132 encePairwiseOnDemand]: 38/53 looper letters, 1553 selfloop transitions, 758 changer transitions 999/3406 dead transitions. [2021-08-13 18:28:06,131 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 3406 transitions, 100110 flow [2021-08-13 18:28:06,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-13 18:28:06,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-08-13 18:28:06,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 639 transitions. [2021-08-13 18:28:06,132 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8037735849056604 [2021-08-13 18:28:06,132 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 639 transitions. [2021-08-13 18:28:06,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 639 transitions. [2021-08-13 18:28:06,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:28:06,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 639 transitions. [2021-08-13 18:28:06,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 42.6) internal successors, (639), 15 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:28:06,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 53.0) internal successors, (848), 16 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:28:06,134 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 53.0) internal successors, (848), 16 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:28:06,134 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 211 predicate places. [2021-08-13 18:28:06,135 INFO L482 AbstractCegarLoop]: Abstraction has has 269 places, 3406 transitions, 100110 flow [2021-08-13 18:28:06,135 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:28:06,135 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:28:06,135 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:28:06,135 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-13 18:28:06,135 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:28:06,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:28:06,135 INFO L82 PathProgramCache]: Analyzing trace with hash 502858046, now seen corresponding path program 23 times [2021-08-13 18:28:06,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:28:06,136 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92862001] [2021-08-13 18:28:06,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:28:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:28:06,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:06,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:28:06,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:06,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:28:06,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:06,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:28:06,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:06,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:28:06,188 INFO L142 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size [2021-08-13 18:28:06,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 18:28:06,202 INFO L142 QuantifierPusher]: treesize reduction 4, result has 84.0 percent of original size [2021-08-13 18:28:06,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:28:06,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:06,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:28:06,232 INFO L142 QuantifierPusher]: treesize reduction 11, result has 38.9 percent of original size [2021-08-13 18:28:06,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:28:06,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:06,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:28:06,242 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 18:28:06,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:28:06,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92862001] [2021-08-13 18:28:06,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92862001] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:28:06,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:28:06,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:28:06,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696935516] [2021-08-13 18:28:06,243 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:28:06,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:28:06,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:28:06,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:28:06,244 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:28:06,244 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 3406 transitions, 100110 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:28:06,244 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:28:06,244 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:28:06,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:28:18,152 INFO L129 PetriNetUnfolder]: 4972/18117 cut-off events. [2021-08-13 18:28:18,153 INFO L130 PetriNetUnfolder]: For 403439/430671 co-relation queries the response was YES. [2021-08-13 18:28:18,470 INFO L84 FinitePrefix]: Finished finitePrefix Result has 182884 conditions, 18117 events. 4972/18117 cut-off events. For 403439/430671 co-relation queries the response was YES. Maximal size of possible extension queue 996. Compared 240191 event pairs, 465 based on Foata normal form. 593/18335 useless extension candidates. Maximal degree in co-relation 182477. Up to 8944 conditions per place. [2021-08-13 18:28:18,546 INFO L132 encePairwiseOnDemand]: 36/53 looper letters, 1971 selfloop transitions, 240 changer transitions 1207/3514 dead transitions. [2021-08-13 18:28:18,546 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 3514 transitions, 110166 flow [2021-08-13 18:28:18,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-13 18:28:18,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-08-13 18:28:18,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 747 transitions. [2021-08-13 18:28:18,548 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7830188679245284 [2021-08-13 18:28:18,548 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 747 transitions. [2021-08-13 18:28:18,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 747 transitions. [2021-08-13 18:28:18,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:28:18,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 747 transitions. [2021-08-13 18:28:18,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 41.5) internal successors, (747), 18 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:28:18,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 53.0) internal successors, (1007), 19 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:28:18,550 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 53.0) internal successors, (1007), 19 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:28:18,551 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 228 predicate places. [2021-08-13 18:28:18,551 INFO L482 AbstractCegarLoop]: Abstraction has has 286 places, 3514 transitions, 110166 flow [2021-08-13 18:28:18,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:28:18,551 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:28:18,551 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:28:18,551 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-13 18:28:18,551 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:28:18,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:28:18,552 INFO L82 PathProgramCache]: Analyzing trace with hash 444636654, now seen corresponding path program 24 times [2021-08-13 18:28:18,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:28:18,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381594096] [2021-08-13 18:28:18,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:28:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:28:18,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:18,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:28:18,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:18,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:28:18,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:18,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:28:18,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:18,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:28:18,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:18,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:28:18,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:18,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:28:18,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:18,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:28:18,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:18,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:28:18,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:18,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:28:18,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:18,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:28:18,646 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 18:28:18,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:28:18,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381594096] [2021-08-13 18:28:18,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381594096] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:28:18,646 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:28:18,646 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 18:28:18,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643174371] [2021-08-13 18:28:18,647 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 18:28:18,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:28:18,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 18:28:18,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-08-13 18:28:18,647 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:28:18,648 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 3514 transitions, 110166 flow. Second operand has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:28:18,648 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:28:18,648 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:28:18,648 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:28:29,772 INFO L129 PetriNetUnfolder]: 4099/15169 cut-off events. [2021-08-13 18:28:29,772 INFO L130 PetriNetUnfolder]: For 376833/398149 co-relation queries the response was YES. [2021-08-13 18:28:29,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162421 conditions, 15169 events. 4099/15169 cut-off events. For 376833/398149 co-relation queries the response was YES. Maximal size of possible extension queue 995. Compared 197815 event pairs, 479 based on Foata normal form. 1024/15820 useless extension candidates. Maximal degree in co-relation 162085. Up to 7523 conditions per place. [2021-08-13 18:28:29,882 INFO L132 encePairwiseOnDemand]: 38/53 looper letters, 1305 selfloop transitions, 726 changer transitions 1411/3535 dead transitions. [2021-08-13 18:28:29,882 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 3535 transitions, 117762 flow [2021-08-13 18:28:29,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 18:28:29,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 18:28:29,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 520 transitions. [2021-08-13 18:28:29,884 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8176100628930818 [2021-08-13 18:28:29,884 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 520 transitions. [2021-08-13 18:28:29,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 520 transitions. [2021-08-13 18:28:29,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:28:29,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 520 transitions. [2021-08-13 18:28:29,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 43.333333333333336) internal successors, (520), 12 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:28:29,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:28:29,886 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:28:29,886 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 239 predicate places. [2021-08-13 18:28:29,886 INFO L482 AbstractCegarLoop]: Abstraction has has 297 places, 3535 transitions, 117762 flow [2021-08-13 18:28:29,886 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:28:29,886 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:28:29,886 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:28:29,886 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-13 18:28:29,887 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:28:29,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:28:29,887 INFO L82 PathProgramCache]: Analyzing trace with hash -636831450, now seen corresponding path program 25 times [2021-08-13 18:28:29,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:28:29,887 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160712442] [2021-08-13 18:28:29,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:28:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:28:29,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:29,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:28:29,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:29,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:28:29,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:29,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:28:29,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:29,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:28:29,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:29,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:28:29,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:29,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:28:29,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:29,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:28:29,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:29,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:28:29,960 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-08-13 18:28:29,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:28:29,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:29,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:28:29,969 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 18:28:29,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:28:29,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160712442] [2021-08-13 18:28:29,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160712442] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:28:29,969 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:28:29,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 18:28:29,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784190854] [2021-08-13 18:28:29,969 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 18:28:29,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:28:29,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 18:28:29,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-13 18:28:29,970 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:28:29,971 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 3535 transitions, 117762 flow. Second operand has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:28:29,971 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:28:29,971 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:28:29,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:28:40,632 INFO L129 PetriNetUnfolder]: 3735/13763 cut-off events. [2021-08-13 18:28:40,633 INFO L130 PetriNetUnfolder]: For 358861/376268 co-relation queries the response was YES. [2021-08-13 18:28:40,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 156277 conditions, 13763 events. 3735/13763 cut-off events. For 358861/376268 co-relation queries the response was YES. Maximal size of possible extension queue 979. Compared 177910 event pairs, 486 based on Foata normal form. 609/14012 useless extension candidates. Maximal degree in co-relation 156019. Up to 6915 conditions per place. [2021-08-13 18:28:40,789 INFO L132 encePairwiseOnDemand]: 38/53 looper letters, 1345 selfloop transitions, 575 changer transitions 1454/3455 dead transitions. [2021-08-13 18:28:40,789 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 3455 transitions, 122034 flow [2021-08-13 18:28:40,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 18:28:40,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 18:28:40,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 473 transitions. [2021-08-13 18:28:40,809 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2021-08-13 18:28:40,809 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 473 transitions. [2021-08-13 18:28:40,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 473 transitions. [2021-08-13 18:28:40,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:28:40,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 473 transitions. [2021-08-13 18:28:40,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 43.0) internal successors, (473), 11 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:28:40,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:28:40,811 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:28:40,811 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 249 predicate places. [2021-08-13 18:28:40,811 INFO L482 AbstractCegarLoop]: Abstraction has has 307 places, 3455 transitions, 122034 flow [2021-08-13 18:28:40,811 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:28:40,811 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:28:40,811 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:28:40,812 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-13 18:28:40,812 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:28:40,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:28:40,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1958187526, now seen corresponding path program 26 times [2021-08-13 18:28:40,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:28:40,812 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118724588] [2021-08-13 18:28:40,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:28:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:28:40,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:40,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:28:40,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:40,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:28:40,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:40,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:28:40,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:40,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:28:40,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:40,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:28:40,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:40,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:28:40,877 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-08-13 18:28:40,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:28:40,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:40,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:28:40,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:28:40,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:28:40,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118724588] [2021-08-13 18:28:40,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118724588] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:28:40,888 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:28:40,888 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:28:40,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996697118] [2021-08-13 18:28:40,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:28:40,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:28:40,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:28:40,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:28:40,891 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 53 [2021-08-13 18:28:40,891 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 3455 transitions, 122034 flow. Second operand has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:28:40,897 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:28:40,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 53 [2021-08-13 18:28:40,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:28:53,317 INFO L129 PetriNetUnfolder]: 3740/13769 cut-off events. [2021-08-13 18:28:53,318 INFO L130 PetriNetUnfolder]: For 362972/379781 co-relation queries the response was YES. [2021-08-13 18:28:53,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158238 conditions, 13769 events. 3740/13769 cut-off events. For 362972/379781 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 178068 event pairs, 481 based on Foata normal form. 174/13588 useless extension candidates. Maximal degree in co-relation 157976. Up to 6916 conditions per place. [2021-08-13 18:28:53,410 INFO L132 encePairwiseOnDemand]: 45/53 looper letters, 44 selfloop transitions, 15 changer transitions 2093/3456 dead transitions. [2021-08-13 18:28:53,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 3456 transitions, 122188 flow [2021-08-13 18:28:53,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 18:28:53,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 18:28:53,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 513 transitions. [2021-08-13 18:28:53,411 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8799313893653516 [2021-08-13 18:28:53,411 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 513 transitions. [2021-08-13 18:28:53,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 513 transitions. [2021-08-13 18:28:53,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:28:53,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 513 transitions. [2021-08-13 18:28:53,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 46.63636363636363) internal successors, (513), 11 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:28:53,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:28:53,413 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:28:53,413 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 259 predicate places. [2021-08-13 18:28:53,413 INFO L482 AbstractCegarLoop]: Abstraction has has 317 places, 3456 transitions, 122188 flow [2021-08-13 18:28:53,413 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:28:53,413 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:28:53,414 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:28:53,414 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-13 18:28:53,414 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:28:53,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:28:53,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1400151508, now seen corresponding path program 27 times [2021-08-13 18:28:53,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:28:53,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172974523] [2021-08-13 18:28:53,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:28:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:28:53,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:53,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 18:28:53,448 INFO L142 QuantifierPusher]: treesize reduction 3, result has 84.2 percent of original size [2021-08-13 18:28:53,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:28:53,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:53,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:28:53,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:53,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:28:53,462 INFO L142 QuantifierPusher]: treesize reduction 19, result has 13.6 percent of original size [2021-08-13 18:28:53,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:28:53,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:53,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:28:53,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:53,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:28:53,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:53,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:28:53,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:53,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:28:53,502 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-08-13 18:28:53,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:28:53,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:28:53,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:28:53,511 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 18:28:53,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:28:53,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172974523] [2021-08-13 18:28:53,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172974523] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:28:53,511 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:28:53,511 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:28:53,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158843891] [2021-08-13 18:28:53,512 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:28:53,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:28:53,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:28:53,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:28:53,513 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:28:53,513 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 3456 transitions, 122188 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:28:53,513 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:28:53,513 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:28:53,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:29:03,799 INFO L129 PetriNetUnfolder]: 3786/13846 cut-off events. [2021-08-13 18:29:03,799 INFO L130 PetriNetUnfolder]: For 409452/428308 co-relation queries the response was YES. [2021-08-13 18:29:03,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 167667 conditions, 13846 events. 3786/13846 cut-off events. For 409452/428308 co-relation queries the response was YES. Maximal size of possible extension queue 983. Compared 179063 event pairs, 482 based on Foata normal form. 505/13996 useless extension candidates. Maximal degree in co-relation 167447. Up to 7013 conditions per place. [2021-08-13 18:29:03,897 INFO L132 encePairwiseOnDemand]: 42/53 looper letters, 847 selfloop transitions, 298 changer transitions 2317/3532 dead transitions. [2021-08-13 18:29:03,897 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 3532 transitions, 131996 flow [2021-08-13 18:29:03,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 18:29:03,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 18:29:03,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 421 transitions. [2021-08-13 18:29:03,898 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7943396226415095 [2021-08-13 18:29:03,898 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 421 transitions. [2021-08-13 18:29:03,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 421 transitions. [2021-08-13 18:29:03,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:29:03,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 421 transitions. [2021-08-13 18:29:03,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 42.1) internal successors, (421), 10 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:03,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:03,900 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:03,900 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 266 predicate places. [2021-08-13 18:29:03,900 INFO L482 AbstractCegarLoop]: Abstraction has has 324 places, 3532 transitions, 131996 flow [2021-08-13 18:29:03,900 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:03,900 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:29:03,900 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:29:03,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-13 18:29:03,900 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:29:03,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:29:03,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1383828968, now seen corresponding path program 28 times [2021-08-13 18:29:03,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:29:03,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265309532] [2021-08-13 18:29:03,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:29:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:29:03,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:03,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:29:03,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:03,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:29:03,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:03,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:29:03,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:03,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:29:03,940 INFO L142 QuantifierPusher]: treesize reduction 7, result has 70.8 percent of original size [2021-08-13 18:29:03,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 18:29:03,948 INFO L142 QuantifierPusher]: treesize reduction 6, result has 60.0 percent of original size [2021-08-13 18:29:03,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:29:03,953 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-08-13 18:29:03,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:29:03,959 INFO L142 QuantifierPusher]: treesize reduction 7, result has 70.8 percent of original size [2021-08-13 18:29:03,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 18:29:03,980 INFO L142 QuantifierPusher]: treesize reduction 6, result has 60.0 percent of original size [2021-08-13 18:29:03,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:29:03,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:03,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:29:03,992 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 18:29:03,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:29:03,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265309532] [2021-08-13 18:29:03,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265309532] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:29:03,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:29:03,993 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:29:03,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142530374] [2021-08-13 18:29:03,993 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:29:03,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:29:03,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:29:03,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:29:03,994 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:29:03,994 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 3532 transitions, 131996 flow. Second operand has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:03,994 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:29:03,994 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:29:03,994 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:29:13,003 INFO L129 PetriNetUnfolder]: 3166/11881 cut-off events. [2021-08-13 18:29:13,003 INFO L130 PetriNetUnfolder]: For 391901/407488 co-relation queries the response was YES. [2021-08-13 18:29:13,061 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149352 conditions, 11881 events. 3166/11881 cut-off events. For 391901/407488 co-relation queries the response was YES. Maximal size of possible extension queue 892. Compared 151884 event pairs, 466 based on Foata normal form. 410/11965 useless extension candidates. Maximal degree in co-relation 149192. Up to 5999 conditions per place. [2021-08-13 18:29:13,088 INFO L132 encePairwiseOnDemand]: 44/53 looper letters, 516 selfloop transitions, 31 changer transitions 2678/3274 dead transitions. [2021-08-13 18:29:13,088 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 3274 transitions, 128988 flow [2021-08-13 18:29:13,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 18:29:13,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 18:29:13,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 294 transitions. [2021-08-13 18:29:13,098 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7924528301886793 [2021-08-13 18:29:13,098 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 294 transitions. [2021-08-13 18:29:13,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 294 transitions. [2021-08-13 18:29:13,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:29:13,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 294 transitions. [2021-08-13 18:29:13,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 42.0) internal successors, (294), 7 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:13,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:13,099 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:13,099 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 272 predicate places. [2021-08-13 18:29:13,099 INFO L482 AbstractCegarLoop]: Abstraction has has 330 places, 3274 transitions, 128988 flow [2021-08-13 18:29:13,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:13,100 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:29:13,100 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:29:13,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-13 18:29:13,100 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:29:13,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:29:13,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1970468162, now seen corresponding path program 29 times [2021-08-13 18:29:13,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:29:13,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323647052] [2021-08-13 18:29:13,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:29:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:29:13,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:13,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:29:13,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:13,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:29:13,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:13,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:29:13,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:13,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:29:13,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:13,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:29:13,165 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-08-13 18:29:13,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:29:13,173 INFO L142 QuantifierPusher]: treesize reduction 7, result has 70.8 percent of original size [2021-08-13 18:29:13,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 18:29:13,185 INFO L142 QuantifierPusher]: treesize reduction 6, result has 60.0 percent of original size [2021-08-13 18:29:13,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:29:13,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:13,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:29:13,194 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 18:29:13,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:29:13,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323647052] [2021-08-13 18:29:13,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323647052] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:29:13,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:29:13,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:29:13,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365852451] [2021-08-13 18:29:13,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:29:13,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:29:13,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:29:13,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:29:13,196 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:29:13,196 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 3274 transitions, 128988 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:13,196 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:29:13,196 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:29:13,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:29:21,929 INFO L129 PetriNetUnfolder]: 3049/11841 cut-off events. [2021-08-13 18:29:21,929 INFO L130 PetriNetUnfolder]: For 412208/428396 co-relation queries the response was YES. [2021-08-13 18:29:21,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154659 conditions, 11841 events. 3049/11841 cut-off events. For 412208/428396 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 153762 event pairs, 453 based on Foata normal form. 300/11823 useless extension candidates. Maximal degree in co-relation 154517. Up to 5918 conditions per place. [2021-08-13 18:29:22,005 INFO L132 encePairwiseOnDemand]: 39/53 looper letters, 82 selfloop transitions, 32 changer transitions 3263/3412 dead transitions. [2021-08-13 18:29:22,005 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 3412 transitions, 141420 flow [2021-08-13 18:29:22,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 18:29:22,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 18:29:22,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 522 transitions. [2021-08-13 18:29:22,006 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8207547169811321 [2021-08-13 18:29:22,006 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 522 transitions. [2021-08-13 18:29:22,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 522 transitions. [2021-08-13 18:29:22,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:29:22,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 522 transitions. [2021-08-13 18:29:22,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 43.5) internal successors, (522), 12 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:22,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:22,008 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:22,009 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 281 predicate places. [2021-08-13 18:29:22,009 INFO L482 AbstractCegarLoop]: Abstraction has has 339 places, 3412 transitions, 141420 flow [2021-08-13 18:29:22,009 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:22,009 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:29:22,009 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:29:22,009 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-13 18:29:22,009 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:29:22,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:29:22,009 INFO L82 PathProgramCache]: Analyzing trace with hash -343337034, now seen corresponding path program 30 times [2021-08-13 18:29:22,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:29:22,010 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142235092] [2021-08-13 18:29:22,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:29:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:29:22,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:22,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:29:22,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:22,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:29:22,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:22,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:29:22,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:22,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 18:29:22,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:22,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:29:22,057 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-08-13 18:29:22,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 18:29:22,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:22,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:29:22,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:22,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:29:22,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:22,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:29:22,117 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-08-13 18:29:22,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 18:29:22,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:22,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:29:22,129 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 18:29:22,129 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:29:22,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142235092] [2021-08-13 18:29:22,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142235092] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:29:22,129 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:29:22,129 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:29:22,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988429207] [2021-08-13 18:29:22,131 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:29:22,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:29:22,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:29:22,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:29:22,131 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:29:22,132 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 3412 transitions, 141420 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:22,132 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:29:22,132 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:29:22,132 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:29:31,489 INFO L129 PetriNetUnfolder]: 3033/11806 cut-off events. [2021-08-13 18:29:31,490 INFO L130 PetriNetUnfolder]: For 450155/467268 co-relation queries the response was YES. [2021-08-13 18:29:31,539 INFO L84 FinitePrefix]: Finished finitePrefix Result has 160321 conditions, 11806 events. 3033/11806 cut-off events. For 450155/467268 co-relation queries the response was YES. Maximal size of possible extension queue 913. Compared 153464 event pairs, 451 based on Foata normal form. 132/11620 useless extension candidates. Maximal degree in co-relation 160177. Up to 6279 conditions per place. [2021-08-13 18:29:31,558 INFO L132 encePairwiseOnDemand]: 42/53 looper letters, 75 selfloop transitions, 17 changer transitions 3262/3389 dead transitions. [2021-08-13 18:29:31,558 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 3389 transitions, 147112 flow [2021-08-13 18:29:31,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 18:29:31,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 18:29:31,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 368 transitions. [2021-08-13 18:29:31,559 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7714884696016772 [2021-08-13 18:29:31,559 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 368 transitions. [2021-08-13 18:29:31,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 368 transitions. [2021-08-13 18:29:31,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:29:31,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 368 transitions. [2021-08-13 18:29:31,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.888888888888886) internal successors, (368), 9 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:31,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:31,561 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:31,561 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 289 predicate places. [2021-08-13 18:29:31,561 INFO L482 AbstractCegarLoop]: Abstraction has has 347 places, 3389 transitions, 147112 flow [2021-08-13 18:29:31,561 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:31,562 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:29:31,562 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:29:31,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-13 18:29:31,562 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:29:31,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:29:31,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1271375140, now seen corresponding path program 31 times [2021-08-13 18:29:31,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:29:31,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473030765] [2021-08-13 18:29:31,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:29:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:29:31,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:31,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:29:31,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:31,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:29:31,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:31,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:29:31,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:31,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:29:31,591 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-08-13 18:29:31,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 18:29:31,600 INFO L142 QuantifierPusher]: treesize reduction 21, result has 32.3 percent of original size [2021-08-13 18:29:31,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:29:31,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:31,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:29:31,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:31,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:29:31,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:31,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:29:31,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:31,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:29:31,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:31,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:29:31,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:31,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:29:31,654 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 18:29:31,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:29:31,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473030765] [2021-08-13 18:29:31,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473030765] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:29:31,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:29:31,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-13 18:29:31,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682381502] [2021-08-13 18:29:31,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-08-13 18:29:31,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:29:31,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-13 18:29:31,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-08-13 18:29:31,657 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:29:31,657 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 3389 transitions, 147112 flow. Second operand has 11 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:31,657 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:29:31,657 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:29:31,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:29:41,861 INFO L129 PetriNetUnfolder]: 3084/12061 cut-off events. [2021-08-13 18:29:41,862 INFO L130 PetriNetUnfolder]: For 506935/526110 co-relation queries the response was YES. [2021-08-13 18:29:41,917 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170345 conditions, 12061 events. 3084/12061 cut-off events. For 506935/526110 co-relation queries the response was YES. Maximal size of possible extension queue 929. Compared 157722 event pairs, 461 based on Foata normal form. 147/11876 useless extension candidates. Maximal degree in co-relation 170199. Up to 6417 conditions per place. [2021-08-13 18:29:41,938 INFO L132 encePairwiseOnDemand]: 40/53 looper letters, 64 selfloop transitions, 9 changer transitions 3355/3463 dead transitions. [2021-08-13 18:29:41,938 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 3463 transitions, 157174 flow [2021-08-13 18:29:41,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 18:29:41,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 18:29:41,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 415 transitions. [2021-08-13 18:29:41,939 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7830188679245284 [2021-08-13 18:29:41,939 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 415 transitions. [2021-08-13 18:29:41,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 415 transitions. [2021-08-13 18:29:41,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:29:41,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 415 transitions. [2021-08-13 18:29:41,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 41.5) internal successors, (415), 10 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:41,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:41,940 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:41,940 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 298 predicate places. [2021-08-13 18:29:41,940 INFO L482 AbstractCegarLoop]: Abstraction has has 356 places, 3463 transitions, 157174 flow [2021-08-13 18:29:41,941 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:41,941 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:29:41,941 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:29:41,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-13 18:29:41,941 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:29:41,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:29:41,941 INFO L82 PathProgramCache]: Analyzing trace with hash 848045782, now seen corresponding path program 32 times [2021-08-13 18:29:41,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:29:41,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693735129] [2021-08-13 18:29:41,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:29:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:29:41,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:41,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:29:41,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:41,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:29:41,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:41,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:29:41,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:41,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:29:41,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:41,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:29:41,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:41,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:29:41,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:41,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:29:41,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:41,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:29:41,997 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-08-13 18:29:41,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 18:29:42,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:42,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:29:42,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:42,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:29:42,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:42,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:29:42,022 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 18:29:42,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:29:42,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693735129] [2021-08-13 18:29:42,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693735129] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:29:42,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:29:42,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 18:29:42,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152053253] [2021-08-13 18:29:42,022 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 18:29:42,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:29:42,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 18:29:42,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-08-13 18:29:42,023 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:29:42,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 3463 transitions, 157174 flow. Second operand has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:42,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:29:42,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:29:42,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:29:53,297 INFO L129 PetriNetUnfolder]: 3059/12068 cut-off events. [2021-08-13 18:29:53,298 INFO L130 PetriNetUnfolder]: For 555447/575956 co-relation queries the response was YES. [2021-08-13 18:29:53,352 INFO L84 FinitePrefix]: Finished finitePrefix Result has 176953 conditions, 12068 events. 3059/12068 cut-off events. For 555447/575956 co-relation queries the response was YES. Maximal size of possible extension queue 933. Compared 158227 event pairs, 470 based on Foata normal form. 133/11871 useless extension candidates. Maximal degree in co-relation 176805. Up to 6416 conditions per place. [2021-08-13 18:29:53,373 INFO L132 encePairwiseOnDemand]: 43/53 looper letters, 41 selfloop transitions, 12 changer transitions 3388/3475 dead transitions. [2021-08-13 18:29:53,374 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 3475 transitions, 164556 flow [2021-08-13 18:29:53,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 18:29:53,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 18:29:53,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 462 transitions. [2021-08-13 18:29:53,375 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7924528301886793 [2021-08-13 18:29:53,375 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 462 transitions. [2021-08-13 18:29:53,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 462 transitions. [2021-08-13 18:29:53,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:29:53,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 462 transitions. [2021-08-13 18:29:53,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 42.0) internal successors, (462), 11 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:53,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:53,377 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:53,377 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 308 predicate places. [2021-08-13 18:29:53,377 INFO L482 AbstractCegarLoop]: Abstraction has has 366 places, 3475 transitions, 164556 flow [2021-08-13 18:29:53,377 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:53,377 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:29:53,377 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:29:53,377 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-13 18:29:53,377 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:29:53,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:29:53,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1274603126, now seen corresponding path program 33 times [2021-08-13 18:29:53,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:29:53,378 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702595123] [2021-08-13 18:29:53,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:29:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:29:53,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:53,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:29:53,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:53,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:29:53,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:53,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:29:53,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:53,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-08-13 18:29:53,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:53,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 18:29:53,434 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-08-13 18:29:53,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 18:29:53,442 INFO L142 QuantifierPusher]: treesize reduction 35, result has 16.7 percent of original size [2021-08-13 18:29:53,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:29:53,449 INFO L142 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-08-13 18:29:53,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:29:53,458 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-08-13 18:29:53,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:29:53,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:53,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:29:53,480 INFO L142 QuantifierPusher]: treesize reduction 12, result has 58.6 percent of original size [2021-08-13 18:29:53,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 18:29:53,495 INFO L142 QuantifierPusher]: treesize reduction 29, result has 29.3 percent of original size [2021-08-13 18:29:53,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 18:29:53,508 INFO L142 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size [2021-08-13 18:29:53,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:29:53,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:29:53,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:29:53,509 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 18:29:53,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:29:53,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702595123] [2021-08-13 18:29:53,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702595123] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:29:53,510 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:29:53,510 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-13 18:29:53,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568417676] [2021-08-13 18:29:53,510 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-08-13 18:29:53,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:29:53,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-13 18:29:53,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-08-13 18:29:53,511 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:29:53,511 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 3475 transitions, 164556 flow. Second operand has 12 states, 12 states have (on average 34.583333333333336) internal successors, (415), 12 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:29:53,511 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:29:53,511 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:29:53,511 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:30:05,518 INFO L129 PetriNetUnfolder]: 3071/12131 cut-off events. [2021-08-13 18:30:05,518 INFO L130 PetriNetUnfolder]: For 612992/635383 co-relation queries the response was YES. [2021-08-13 18:30:05,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 184346 conditions, 12131 events. 3071/12131 cut-off events. For 612992/635383 co-relation queries the response was YES. Maximal size of possible extension queue 931. Compared 159174 event pairs, 473 based on Foata normal form. 109/11907 useless extension candidates. Maximal degree in co-relation 184196. Up to 6496 conditions per place. [2021-08-13 18:30:05,629 INFO L132 encePairwiseOnDemand]: 41/53 looper letters, 41 selfloop transitions, 5 changer transitions 3408/3488 dead transitions. [2021-08-13 18:30:05,629 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 3488 transitions, 172036 flow [2021-08-13 18:30:05,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 18:30:05,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 18:30:05,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 506 transitions. [2021-08-13 18:30:05,630 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7343976777939042 [2021-08-13 18:30:05,630 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 506 transitions. [2021-08-13 18:30:05,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 506 transitions. [2021-08-13 18:30:05,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:30:05,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 506 transitions. [2021-08-13 18:30:05,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 38.92307692307692) internal successors, (506), 13 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:30:05,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 53.0) internal successors, (742), 14 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:30:05,632 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 53.0) internal successors, (742), 14 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:30:05,632 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 320 predicate places. [2021-08-13 18:30:05,632 INFO L482 AbstractCegarLoop]: Abstraction has has 378 places, 3488 transitions, 172036 flow [2021-08-13 18:30:05,633 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 34.583333333333336) internal successors, (415), 12 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:30:05,633 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:30:05,633 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:30:05,633 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-13 18:30:05,633 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:30:05,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:30:05,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1529873562, now seen corresponding path program 34 times [2021-08-13 18:30:05,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:30:05,633 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896530518] [2021-08-13 18:30:05,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:30:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:30:05,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:30:05,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 18:30:05,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:30:05,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:30:05,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:30:05,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:30:05,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:30:05,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-08-13 18:30:05,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:30:05,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:30:05,699 INFO L142 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-08-13 18:30:05,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:30:05,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:30:05,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:30:05,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:30:05,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:30:05,738 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-08-13 18:30:05,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-08-13 18:30:05,768 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 18:30:05,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:30:05,777 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-08-13 18:30:05,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 18:30:05,787 INFO L142 QuantifierPusher]: treesize reduction 21, result has 25.0 percent of original size [2021-08-13 18:30:05,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:30:05,798 INFO L142 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size [2021-08-13 18:30:05,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:30:05,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:30:05,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:30:05,799 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 18:30:05,800 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:30:05,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896530518] [2021-08-13 18:30:05,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896530518] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:30:05,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:30:05,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-13 18:30:05,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149256673] [2021-08-13 18:30:05,800 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-08-13 18:30:05,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:30:05,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-13 18:30:05,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-08-13 18:30:05,801 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:30:05,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 3488 transitions, 172036 flow. Second operand has 12 states, 12 states have (on average 34.583333333333336) internal successors, (415), 12 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:30:05,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:30:05,802 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:30:05,802 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:30:21,710 INFO L129 PetriNetUnfolder]: 3267/13049 cut-off events. [2021-08-13 18:30:21,710 INFO L130 PetriNetUnfolder]: For 727445/753734 co-relation queries the response was YES. [2021-08-13 18:30:21,776 INFO L84 FinitePrefix]: Finished finitePrefix Result has 203605 conditions, 13049 events. 3267/13049 cut-off events. For 727445/753734 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 174054 event pairs, 531 based on Foata normal form. 190/12857 useless extension candidates. Maximal degree in co-relation 203453. Up to 6923 conditions per place. [2021-08-13 18:30:21,801 INFO L132 encePairwiseOnDemand]: 37/53 looper letters, 30 selfloop transitions, 9 changer transitions 3651/3724 dead transitions. [2021-08-13 18:30:21,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 3724 transitions, 191164 flow [2021-08-13 18:30:21,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-13 18:30:21,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-08-13 18:30:21,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 692 transitions. [2021-08-13 18:30:21,802 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7680355160932297 [2021-08-13 18:30:21,802 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 692 transitions. [2021-08-13 18:30:21,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 692 transitions. [2021-08-13 18:30:21,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:30:21,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 692 transitions. [2021-08-13 18:30:21,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 40.705882352941174) internal successors, (692), 17 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:30:21,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 53.0) internal successors, (954), 18 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:30:21,804 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 53.0) internal successors, (954), 18 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:30:21,804 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 336 predicate places. [2021-08-13 18:30:21,804 INFO L482 AbstractCegarLoop]: Abstraction has has 394 places, 3724 transitions, 191164 flow [2021-08-13 18:30:21,804 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 34.583333333333336) internal successors, (415), 12 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:30:21,804 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:30:21,805 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:30:21,805 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-13 18:30:21,805 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:30:21,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:30:21,805 INFO L82 PathProgramCache]: Analyzing trace with hash -346951848, now seen corresponding path program 35 times [2021-08-13 18:30:21,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:30:21,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043958585] [2021-08-13 18:30:21,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:30:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:30:21,827 INFO L142 QuantifierPusher]: treesize reduction 25, result has 47.9 percent of original size [2021-08-13 18:30:21,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 18:30:21,839 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-08-13 18:30:21,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:30:21,842 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 18:30:21,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:30:21,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:30:21,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 18:30:21,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:30:21,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:30:21,863 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-08-13 18:30:21,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 18:30:21,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:30:21,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:30:21,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:30:21,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 18:30:21,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:30:21,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:30:21,899 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-08-13 18:30:21,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 18:30:21,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:30:21,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:30:21,913 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 18:30:21,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:30:21,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043958585] [2021-08-13 18:30:21,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043958585] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:30:21,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:30:21,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:30:21,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750187194] [2021-08-13 18:30:21,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:30:21,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:30:21,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:30:21,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:30:21,914 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:30:21,915 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 3724 transitions, 191164 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:30:21,915 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:30:21,915 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:30:21,915 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:30:37,983 INFO L129 PetriNetUnfolder]: 3235/12929 cut-off events. [2021-08-13 18:30:37,984 INFO L130 PetriNetUnfolder]: For 777863/804776 co-relation queries the response was YES. [2021-08-13 18:30:38,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 209050 conditions, 12929 events. 3235/12929 cut-off events. For 777863/804776 co-relation queries the response was YES. Maximal size of possible extension queue 997. Compared 172518 event pairs, 518 based on Foata normal form. 120/12678 useless extension candidates. Maximal degree in co-relation 208896. Up to 6872 conditions per place. [2021-08-13 18:30:38,081 INFO L132 encePairwiseOnDemand]: 43/53 looper letters, 21 selfloop transitions, 5 changer transitions 3642/3702 dead transitions. [2021-08-13 18:30:38,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 3702 transitions, 197304 flow [2021-08-13 18:30:38,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:30:38,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:30:38,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 330 transitions. [2021-08-13 18:30:38,082 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7783018867924528 [2021-08-13 18:30:38,082 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 330 transitions. [2021-08-13 18:30:38,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 330 transitions. [2021-08-13 18:30:38,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:30:38,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 330 transitions. [2021-08-13 18:30:38,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 41.25) internal successors, (330), 8 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:30:38,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:30:38,083 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:30:38,083 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 343 predicate places. [2021-08-13 18:30:38,083 INFO L482 AbstractCegarLoop]: Abstraction has has 401 places, 3702 transitions, 197304 flow [2021-08-13 18:30:38,084 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:30:38,084 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:30:38,084 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:30:38,084 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-13 18:30:38,084 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:30:38,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:30:38,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1545035138, now seen corresponding path program 36 times [2021-08-13 18:30:38,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:30:38,084 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951226790] [2021-08-13 18:30:38,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:30:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:30:38,108 INFO L142 QuantifierPusher]: treesize reduction 28, result has 46.2 percent of original size [2021-08-13 18:30:38,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-08-13 18:30:38,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:30:38,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 18:30:38,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:30:38,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:30:38,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:30:38,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:30:38,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:30:38,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 18:30:38,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:30:38,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:30:38,174 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-08-13 18:30:38,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:30:38,183 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-08-13 18:30:38,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:30:38,184 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-08-13 18:30:38,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:30:38,197 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-08-13 18:30:38,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:30:38,198 INFO L142 QuantifierPusher]: treesize reduction 22, result has 58.5 percent of original size [2021-08-13 18:30:38,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 18:30:38,226 INFO L142 QuantifierPusher]: treesize reduction 47, result has 30.9 percent of original size [2021-08-13 18:30:38,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:30:38,241 INFO L142 QuantifierPusher]: treesize reduction 30, result has 30.2 percent of original size [2021-08-13 18:30:38,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:30:38,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:30:38,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:30:38,251 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 18:30:38,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:30:38,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951226790] [2021-08-13 18:30:38,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951226790] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:30:38,251 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:30:38,251 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-13 18:30:38,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744767728] [2021-08-13 18:30:38,251 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-08-13 18:30:38,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:30:38,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-13 18:30:38,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-08-13 18:30:38,252 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 18:30:38,253 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 3702 transitions, 197304 flow. Second operand has 12 states, 12 states have (on average 34.583333333333336) internal successors, (415), 12 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:30:38,253 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:30:38,253 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 18:30:38,253 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:30:58,768 INFO L129 PetriNetUnfolder]: 3411/14052 cut-off events. [2021-08-13 18:30:58,768 INFO L130 PetriNetUnfolder]: For 946006/977078 co-relation queries the response was YES. [2021-08-13 18:30:58,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232113 conditions, 14052 events. 3411/14052 cut-off events. For 946006/977078 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 191565 event pairs, 579 based on Foata normal form. 303/13936 useless extension candidates. Maximal degree in co-relation 231991. Up to 7361 conditions per place. [2021-08-13 18:30:58,866 INFO L132 encePairwiseOnDemand]: 36/53 looper letters, 0 selfloop transitions, 0 changer transitions 3994/3994 dead transitions. [2021-08-13 18:30:58,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 3994 transitions, 221330 flow [2021-08-13 18:30:58,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-13 18:30:58,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-08-13 18:30:58,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1034 transitions. [2021-08-13 18:30:58,868 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.780377358490566 [2021-08-13 18:30:58,868 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1034 transitions. [2021-08-13 18:30:58,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1034 transitions. [2021-08-13 18:30:58,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:30:58,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1034 transitions. [2021-08-13 18:30:58,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 41.36) internal successors, (1034), 25 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:30:58,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 53.0) internal successors, (1378), 26 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:30:58,871 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 53.0) internal successors, (1378), 26 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:30:58,871 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 363 predicate places. [2021-08-13 18:30:58,871 INFO L482 AbstractCegarLoop]: Abstraction has has 421 places, 3994 transitions, 221330 flow [2021-08-13 18:30:58,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 34.583333333333336) internal successors, (415), 12 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:30:58,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown