/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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 17:52:51,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 17:52:51,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 17:52:51,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-09 17:52:51,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 17:52:51,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 17:52:51,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 17:52:51,593 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-FA-NoLbe.epf [2021-07-09 17:52:51,627 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 17:52:51,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 17:52:51,627 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-09 17:52:51,628 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-09 17:52:51,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 17:52:51,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 17:52:51,630 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 17:52:51,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 17:52:51,630 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 17:52:51,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 17:52:51,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 17:52:51,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 17:52:51,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 17:52:51,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 17:52:51,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 17:52:51,631 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 17:52:51,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 17:52:51,632 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 17:52:51,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 17:52:51,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 17:52:51,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 17:52:51,632 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 17:52:51,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 17:52:51,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 17:52:51,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 17:52:51,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 17:52:51,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 17:52:51,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 17:52:51,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 17:52:51,633 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 17:52:51,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 17:52:51,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 17:52:51,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 17:52:51,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 17:52:51,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 17:52:51,908 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 17:52:51,909 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 17:52:51,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl [2021-07-09 17:52:51,910 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl' [2021-07-09 17:52:51,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 17:52:51,944 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 17:52:51,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 17:52:51,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 17:52:51,945 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 17:52:51,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:52:51" (1/1) ... [2021-07-09 17:52:51,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:52:51" (1/1) ... [2021-07-09 17:52:51,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 17:52:51,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 17:52:51,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 17:52:51,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 17:52:51,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:52:51" (1/1) ... [2021-07-09 17:52:51,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:52:51" (1/1) ... [2021-07-09 17:52:51,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:52:51" (1/1) ... [2021-07-09 17:52:51,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:52:51" (1/1) ... [2021-07-09 17:52:51,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:52:51" (1/1) ... [2021-07-09 17:52:51,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:52:51" (1/1) ... [2021-07-09 17:52:51,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:52:51" (1/1) ... [2021-07-09 17:52:51,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 17:52:51,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 17:52:51,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 17:52:51,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 17:52:51,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:52:51" (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 [2021-07-09 17:52:52,072 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 17:52:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 17:52:52,073 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 17:52:52,073 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 17:52:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 17:52:52,074 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 17:52:52,074 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 17:52:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 17:52:52,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 17:52:52,074 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-09 17:52:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-09 17:52:52,075 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-09 17:52:52,075 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-07-09 17:52:52,075 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-07-09 17:52:52,075 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-07-09 17:52:52,075 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-07-09 17:52:52,075 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-07-09 17:52:52,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-07-09 17:52:52,076 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-07-09 17:52:52,076 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-07-09 17:52:52,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-07-09 17:52:52,077 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 17:52:52,264 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 17:52:52,264 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-09 17:52:52,277 INFO L202 PluginConnector]: Adding new model ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 05:52:52 BoogieIcfgContainer [2021-07-09 17:52:52,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 17:52:52,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 17:52:52,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 17:52:52,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 17:52:52,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:52:51" (1/2) ... [2021-07-09 17:52:52,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ffd396 and model type ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 05:52:52, skipping insertion in model container [2021-07-09 17:52:52,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 05:52:52" (2/2) ... [2021-07-09 17:52:52,282 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-6.wvr.bpl [2021-07-09 17:52:52,285 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 17:52:52,285 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 17:52:52,285 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 17:52:52,286 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 17:52:52,365 INFO L149 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-07-09 17:52:52,394 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-07-09 17:52:52,412 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 17:52:52,412 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 17:52:52,412 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 17:52:52,412 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 17:52:52,412 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 17:52:52,412 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 17:52:52,412 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 17:52:52,412 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 17:52:52,420 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 54 transitions, 156 flow [2021-07-09 17:52:54,461 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 74652 states, 74651 states have (on average 5.020776680821422) internal successors, (374806), 74651 states have internal predecessors, (374806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:54,729 INFO L276 IsEmpty]: Start isEmpty. Operand has 74652 states, 74651 states have (on average 5.020776680821422) internal successors, (374806), 74651 states have internal predecessors, (374806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:55,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 17:52:55,324 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:52:55,325 INFO L508 BasicCegarLoop]: 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] [2021-07-09 17:52:55,325 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:52:55,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:52:55,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1124043514, now seen corresponding path program 1 times [2021-07-09 17:52:55,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:52:55,349 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810899148] [2021-07-09 17:52:55,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:52:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:52:55,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:52:55,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:52:55,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810899148] [2021-07-09 17:52:55,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810899148] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:52:55,514 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:52:55,514 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:52:55,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859568267] [2021-07-09 17:52:55,517 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 17:52:55,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:52:55,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 17:52:55,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:52:55,676 INFO L87 Difference]: Start difference. First operand has 74652 states, 74651 states have (on average 5.020776680821422) internal successors, (374806), 74651 states have internal predecessors, (374806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:58,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:52:58,339 INFO L93 Difference]: Finished difference Result 201088 states and 980337 transitions. [2021-07-09 17:52:58,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 17:52:58,341 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 17:52:58,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:52:59,924 INFO L225 Difference]: With dead ends: 201088 [2021-07-09 17:52:59,924 INFO L226 Difference]: Without dead ends: 201088 [2021-07-09 17:52:59,925 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 32.3ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:53:01,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201088 states. [2021-07-09 17:53:06,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201088 to 100373. [2021-07-09 17:53:06,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100373 states, 100372 states have (on average 4.930000398517515) internal successors, (494834), 100372 states have internal predecessors, (494834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:08,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100373 states to 100373 states and 494834 transitions. [2021-07-09 17:53:08,133 INFO L78 Accepts]: Start accepts. Automaton has 100373 states and 494834 transitions. Word has length 46 [2021-07-09 17:53:08,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:08,134 INFO L482 AbstractCegarLoop]: Abstraction has 100373 states and 494834 transitions. [2021-07-09 17:53:08,134 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:08,134 INFO L276 IsEmpty]: Start isEmpty. Operand 100373 states and 494834 transitions. [2021-07-09 17:53:08,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 17:53:08,560 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:08,560 INFO L508 BasicCegarLoop]: 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] [2021-07-09 17:53:08,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 17:53:08,560 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:08,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:08,561 INFO L82 PathProgramCache]: Analyzing trace with hash -25124834, now seen corresponding path program 2 times [2021-07-09 17:53:08,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:08,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088919088] [2021-07-09 17:53:08,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:08,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:08,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:08,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088919088] [2021-07-09 17:53:08,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088919088] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:08,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:08,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:53:08,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248027490] [2021-07-09 17:53:08,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:53:08,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:08,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:53:08,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:53:08,648 INFO L87 Difference]: Start difference. First operand 100373 states and 494834 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:11,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:11,748 INFO L93 Difference]: Finished difference Result 237543 states and 1143295 transitions. [2021-07-09 17:53:11,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 17:53:11,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 17:53:11,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:13,607 INFO L225 Difference]: With dead ends: 237543 [2021-07-09 17:53:13,607 INFO L226 Difference]: Without dead ends: 237543 [2021-07-09 17:53:13,608 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 19.1ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:53:16,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237543 states. [2021-07-09 17:53:21,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237543 to 124242. [2021-07-09 17:53:21,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124242 states, 124241 states have (on average 4.865503336257757) internal successors, (604495), 124241 states have internal predecessors, (604495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:22,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124242 states to 124242 states and 604495 transitions. [2021-07-09 17:53:22,721 INFO L78 Accepts]: Start accepts. Automaton has 124242 states and 604495 transitions. Word has length 46 [2021-07-09 17:53:22,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:22,723 INFO L482 AbstractCegarLoop]: Abstraction has 124242 states and 604495 transitions. [2021-07-09 17:53:22,723 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:22,724 INFO L276 IsEmpty]: Start isEmpty. Operand 124242 states and 604495 transitions. [2021-07-09 17:53:23,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 17:53:23,154 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:23,154 INFO L508 BasicCegarLoop]: 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] [2021-07-09 17:53:23,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 17:53:23,155 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:23,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:23,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1292758180, now seen corresponding path program 3 times [2021-07-09 17:53:23,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:23,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719687302] [2021-07-09 17:53:23,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:23,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:23,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:23,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719687302] [2021-07-09 17:53:23,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719687302] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:23,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:23,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:53:23,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723990958] [2021-07-09 17:53:23,210 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 17:53:23,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:23,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 17:53:23,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:53:23,211 INFO L87 Difference]: Start difference. First operand 124242 states and 604495 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:26,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:26,230 INFO L93 Difference]: Finished difference Result 232977 states and 1116666 transitions. [2021-07-09 17:53:26,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 17:53:26,231 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 17:53:26,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:29,427 INFO L225 Difference]: With dead ends: 232977 [2021-07-09 17:53:29,427 INFO L226 Difference]: Without dead ends: 232977 [2021-07-09 17:53:29,440 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 24.9ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:53:31,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232977 states. [2021-07-09 17:53:37,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232977 to 140760. [2021-07-09 17:53:37,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140760 states, 140759 states have (on average 4.84867752683665) internal successors, (682495), 140759 states have internal predecessors, (682495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:38,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140760 states to 140760 states and 682495 transitions. [2021-07-09 17:53:38,786 INFO L78 Accepts]: Start accepts. Automaton has 140760 states and 682495 transitions. Word has length 46 [2021-07-09 17:53:38,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:38,786 INFO L482 AbstractCegarLoop]: Abstraction has 140760 states and 682495 transitions. [2021-07-09 17:53:38,787 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:38,787 INFO L276 IsEmpty]: Start isEmpty. Operand 140760 states and 682495 transitions. [2021-07-09 17:53:39,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 17:53:39,573 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:39,573 INFO L508 BasicCegarLoop]: 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] [2021-07-09 17:53:39,573 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 17:53:39,573 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:39,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:39,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1645150304, now seen corresponding path program 4 times [2021-07-09 17:53:39,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:39,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622752188] [2021-07-09 17:53:39,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:39,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:39,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:39,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622752188] [2021-07-09 17:53:39,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622752188] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:39,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:39,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 17:53:39,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921478065] [2021-07-09 17:53:39,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:53:39,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:39,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:53:39,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:53:39,674 INFO L87 Difference]: Start difference. First operand 140760 states and 682495 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:42,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:42,210 INFO L93 Difference]: Finished difference Result 207060 states and 995129 transitions. [2021-07-09 17:53:42,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:53:42,210 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 17:53:42,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:43,705 INFO L225 Difference]: With dead ends: 207060 [2021-07-09 17:53:43,706 INFO L226 Difference]: Without dead ends: 207060 [2021-07-09 17:53:43,706 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 30.5ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:53:45,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207060 states. [2021-07-09 17:53:50,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207060 to 146091. [2021-07-09 17:53:50,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146091 states, 146090 states have (on average 4.832856458347594) internal successors, (706032), 146090 states have internal predecessors, (706032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:52,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146091 states to 146091 states and 706032 transitions. [2021-07-09 17:53:52,741 INFO L78 Accepts]: Start accepts. Automaton has 146091 states and 706032 transitions. Word has length 46 [2021-07-09 17:53:52,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:52,741 INFO L482 AbstractCegarLoop]: Abstraction has 146091 states and 706032 transitions. [2021-07-09 17:53:52,741 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:52,742 INFO L276 IsEmpty]: Start isEmpty. Operand 146091 states and 706032 transitions. [2021-07-09 17:53:53,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 17:53:53,411 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:53,411 INFO L508 BasicCegarLoop]: 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] [2021-07-09 17:53:53,411 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 17:53:53,411 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:53,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:53,412 INFO L82 PathProgramCache]: Analyzing trace with hash -335981984, now seen corresponding path program 5 times [2021-07-09 17:53:53,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:53,412 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225416925] [2021-07-09 17:53:53,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:53,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:53,491 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:53,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225416925] [2021-07-09 17:53:53,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225416925] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:53,491 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:53,491 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:53:53,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526808717] [2021-07-09 17:53:53,492 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 17:53:53,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:53,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 17:53:53,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:53:53,493 INFO L87 Difference]: Start difference. First operand 146091 states and 706032 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:57,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:57,149 INFO L93 Difference]: Finished difference Result 271147 states and 1272171 transitions. [2021-07-09 17:53:57,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:53:57,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 17:53:57,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:54:01,085 INFO L225 Difference]: With dead ends: 271147 [2021-07-09 17:54:01,085 INFO L226 Difference]: Without dead ends: 271147 [2021-07-09 17:54:01,086 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 46.0ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:54:03,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271147 states. [2021-07-09 17:54:10,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271147 to 164447. [2021-07-09 17:54:10,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164447 states, 164446 states have (on average 4.712294613429332) internal successors, (774918), 164446 states have internal predecessors, (774918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:12,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164447 states to 164447 states and 774918 transitions. [2021-07-09 17:54:12,644 INFO L78 Accepts]: Start accepts. Automaton has 164447 states and 774918 transitions. Word has length 46 [2021-07-09 17:54:12,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:54:12,644 INFO L482 AbstractCegarLoop]: Abstraction has 164447 states and 774918 transitions. [2021-07-09 17:54:12,644 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:12,644 INFO L276 IsEmpty]: Start isEmpty. Operand 164447 states and 774918 transitions. [2021-07-09 17:54:13,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 17:54:13,469 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:54:13,469 INFO L508 BasicCegarLoop]: 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] [2021-07-09 17:54:13,469 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 17:54:13,470 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:54:13,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:54:13,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1559569820, now seen corresponding path program 6 times [2021-07-09 17:54:13,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:54:13,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172522882] [2021-07-09 17:54:13,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:54:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:54:13,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:54:13,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:54:13,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172522882] [2021-07-09 17:54:13,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172522882] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:54:13,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:54:13,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 17:54:13,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494938705] [2021-07-09 17:54:13,574 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:54:13,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:54:13,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:54:13,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:54:13,575 INFO L87 Difference]: Start difference. First operand 164447 states and 774918 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:17,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:54:17,599 INFO L93 Difference]: Finished difference Result 281393 states and 1303094 transitions. [2021-07-09 17:54:17,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 17:54:17,600 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 17:54:17,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:54:20,626 INFO L225 Difference]: With dead ends: 281393 [2021-07-09 17:54:20,627 INFO L226 Difference]: Without dead ends: 281393 [2021-07-09 17:54:20,627 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 56.8ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-07-09 17:54:22,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281393 states. [2021-07-09 17:54:31,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281393 to 185569. [2021-07-09 17:54:31,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185569 states, 185568 states have (on average 4.64495494912916) internal successors, (861955), 185568 states have internal predecessors, (861955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:33,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185569 states to 185569 states and 861955 transitions. [2021-07-09 17:54:33,483 INFO L78 Accepts]: Start accepts. Automaton has 185569 states and 861955 transitions. Word has length 46 [2021-07-09 17:54:33,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:54:33,484 INFO L482 AbstractCegarLoop]: Abstraction has 185569 states and 861955 transitions. [2021-07-09 17:54:33,484 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:33,484 INFO L276 IsEmpty]: Start isEmpty. Operand 185569 states and 861955 transitions. [2021-07-09 17:54:34,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 17:54:34,403 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:54:34,403 INFO L508 BasicCegarLoop]: 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] [2021-07-09 17:54:34,403 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 17:54:34,403 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:54:34,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:54:34,403 INFO L82 PathProgramCache]: Analyzing trace with hash 521453882, now seen corresponding path program 7 times [2021-07-09 17:54:34,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:54:34,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016698568] [2021-07-09 17:54:34,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:54:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:54:34,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:54:34,507 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:54:34,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016698568] [2021-07-09 17:54:34,507 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016698568] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:54:34,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:54:34,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:54:34,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667426379] [2021-07-09 17:54:34,508 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 17:54:34,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:54:34,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 17:54:34,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:54:34,509 INFO L87 Difference]: Start difference. First operand 185569 states and 861955 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:37,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:54:37,798 INFO L93 Difference]: Finished difference Result 292927 states and 1358658 transitions. [2021-07-09 17:54:37,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:54:37,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 17:54:37,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:54:40,146 INFO L225 Difference]: With dead ends: 292927 [2021-07-09 17:54:40,147 INFO L226 Difference]: Without dead ends: 196405 [2021-07-09 17:54:40,147 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.3ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:54:42,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196405 states. [2021-07-09 17:54:48,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196405 to 196405. [2021-07-09 17:54:48,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196405 states, 196404 states have (on average 4.545100914441661) internal successors, (892676), 196404 states have internal predecessors, (892676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:50,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196405 states to 196405 states and 892676 transitions. [2021-07-09 17:54:50,231 INFO L78 Accepts]: Start accepts. Automaton has 196405 states and 892676 transitions. Word has length 46 [2021-07-09 17:54:50,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:54:50,231 INFO L482 AbstractCegarLoop]: Abstraction has 196405 states and 892676 transitions. [2021-07-09 17:54:50,231 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:50,231 INFO L276 IsEmpty]: Start isEmpty. Operand 196405 states and 892676 transitions. [2021-07-09 17:54:51,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 17:54:51,225 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:54:51,225 INFO L508 BasicCegarLoop]: 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] [2021-07-09 17:54:51,225 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-09 17:54:51,225 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:54:51,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:54:51,226 INFO L82 PathProgramCache]: Analyzing trace with hash -436618842, now seen corresponding path program 8 times [2021-07-09 17:54:51,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:54:51,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178272509] [2021-07-09 17:54:51,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:54:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:54:51,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:54:51,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:54:51,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178272509] [2021-07-09 17:54:51,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178272509] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:54:51,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:54:51,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:54:51,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502490911] [2021-07-09 17:54:51,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 17:54:51,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:54:51,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 17:54:51,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:54:51,285 INFO L87 Difference]: Start difference. First operand 196405 states and 892676 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:55,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:54:55,619 INFO L93 Difference]: Finished difference Result 311447 states and 1399231 transitions. [2021-07-09 17:54:55,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 17:54:55,620 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 17:54:55,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:55:00,020 INFO L225 Difference]: With dead ends: 311447 [2021-07-09 17:55:00,021 INFO L226 Difference]: Without dead ends: 311255 [2021-07-09 17:55:00,021 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 26.2ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:55:02,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311255 states. [2021-07-09 17:55:11,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311255 to 207417. [2021-07-09 17:55:12,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207417 states, 207416 states have (on average 4.523006903999692) internal successors, (938144), 207416 states have internal predecessors, (938144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:55:14,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207417 states to 207417 states and 938144 transitions. [2021-07-09 17:55:14,147 INFO L78 Accepts]: Start accepts. Automaton has 207417 states and 938144 transitions. Word has length 46 [2021-07-09 17:55:14,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:55:14,147 INFO L482 AbstractCegarLoop]: Abstraction has 207417 states and 938144 transitions. [2021-07-09 17:55:14,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:55:14,147 INFO L276 IsEmpty]: Start isEmpty. Operand 207417 states and 938144 transitions. [2021-07-09 17:55:15,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 17:55:15,247 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:55:15,247 INFO L508 BasicCegarLoop]: 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] [2021-07-09 17:55:15,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-09 17:55:15,248 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:55:15,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:55:15,248 INFO L82 PathProgramCache]: Analyzing trace with hash 153599186, now seen corresponding path program 9 times [2021-07-09 17:55:15,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:55:15,248 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72511161] [2021-07-09 17:55:15,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:55:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:55:15,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:55:15,306 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:55:15,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72511161] [2021-07-09 17:55:15,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72511161] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:55:15,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:55:15,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:55:15,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760434272] [2021-07-09 17:55:15,307 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:55:15,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:55:15,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:55:15,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:55:15,308 INFO L87 Difference]: Start difference. First operand 207417 states and 938144 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:55:20,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:55:20,435 INFO L93 Difference]: Finished difference Result 334168 states and 1492333 transitions. [2021-07-09 17:55:20,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 17:55:20,436 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 17:55:20,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:55:25,213 INFO L225 Difference]: With dead ends: 334168 [2021-07-09 17:55:25,214 INFO L226 Difference]: Without dead ends: 333766 [2021-07-09 17:55:25,217 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 24.3ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:55:27,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333766 states. [2021-07-09 17:55:37,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333766 to 214179. [2021-07-09 17:55:37,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214179 states, 214178 states have (on average 4.497025838321396) internal successors, (963164), 214178 states have internal predecessors, (963164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:55:39,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214179 states to 214179 states and 963164 transitions. [2021-07-09 17:55:39,434 INFO L78 Accepts]: Start accepts. Automaton has 214179 states and 963164 transitions. Word has length 46 [2021-07-09 17:55:39,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:55:39,437 INFO L482 AbstractCegarLoop]: Abstraction has 214179 states and 963164 transitions. [2021-07-09 17:55:39,437 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:55:39,437 INFO L276 IsEmpty]: Start isEmpty. Operand 214179 states and 963164 transitions. [2021-07-09 17:55:40,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 17:55:40,262 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:55:40,262 INFO L508 BasicCegarLoop]: 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] [2021-07-09 17:55:40,262 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-09 17:55:40,262 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:55:40,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:55:40,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1321966254, now seen corresponding path program 10 times [2021-07-09 17:55:40,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:55:40,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273617316] [2021-07-09 17:55:40,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:55:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:55:40,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:55:40,314 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:55:40,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273617316] [2021-07-09 17:55:40,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273617316] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:55:40,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:55:40,315 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 17:55:40,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560643656] [2021-07-09 17:55:40,315 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:55:40,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:55:40,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:55:40,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:55:40,316 INFO L87 Difference]: Start difference. First operand 214179 states and 963164 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:55:45,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:55:45,962 INFO L93 Difference]: Finished difference Result 354188 states and 1551857 transitions. [2021-07-09 17:55:45,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 17:55:45,965 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 17:55:45,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:55:49,730 INFO L225 Difference]: With dead ends: 354188 [2021-07-09 17:55:49,731 INFO L226 Difference]: Without dead ends: 353624 [2021-07-09 17:55:49,731 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 40.0ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-07-09 17:55:52,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353624 states. [2021-07-09 17:56:01,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353624 to 224674. [2021-07-09 17:56:02,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224674 states, 224673 states have (on average 4.434026340503754) internal successors, (996206), 224673 states have internal predecessors, (996206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:04,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224674 states to 224674 states and 996206 transitions. [2021-07-09 17:56:04,052 INFO L78 Accepts]: Start accepts. Automaton has 224674 states and 996206 transitions. Word has length 46 [2021-07-09 17:56:04,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:56:04,052 INFO L482 AbstractCegarLoop]: Abstraction has 224674 states and 996206 transitions. [2021-07-09 17:56:04,052 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:04,052 INFO L276 IsEmpty]: Start isEmpty. Operand 224674 states and 996206 transitions. [2021-07-09 17:56:05,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 17:56:05,154 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:56:05,154 INFO L508 BasicCegarLoop]: 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] [2021-07-09 17:56:05,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-09 17:56:05,154 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:56:05,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:56:05,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1091441620, now seen corresponding path program 11 times [2021-07-09 17:56:05,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:56:05,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609232482] [2021-07-09 17:56:05,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:56:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:56:05,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:56:05,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:56:05,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609232482] [2021-07-09 17:56:05,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609232482] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:56:05,206 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:56:05,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 17:56:05,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961717394] [2021-07-09 17:56:05,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:56:05,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:56:05,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:56:05,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:56:05,207 INFO L87 Difference]: Start difference. First operand 224674 states and 996206 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:09,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:56:09,383 INFO L93 Difference]: Finished difference Result 313135 states and 1375062 transitions. [2021-07-09 17:56:09,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:56:09,397 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 17:56:09,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:56:12,644 INFO L225 Difference]: With dead ends: 313135 [2021-07-09 17:56:12,645 INFO L226 Difference]: Without dead ends: 313027 [2021-07-09 17:56:12,645 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 27.7ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:56:14,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313027 states. [2021-07-09 17:56:23,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313027 to 222693. [2021-07-09 17:56:23,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222693 states, 222692 states have (on average 4.4333384225746775) internal successors, (987269), 222692 states have internal predecessors, (987269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:25,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222693 states to 222693 states and 987269 transitions. [2021-07-09 17:56:25,414 INFO L78 Accepts]: Start accepts. Automaton has 222693 states and 987269 transitions. Word has length 46 [2021-07-09 17:56:25,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:56:25,414 INFO L482 AbstractCegarLoop]: Abstraction has 222693 states and 987269 transitions. [2021-07-09 17:56:25,414 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:25,414 INFO L276 IsEmpty]: Start isEmpty. Operand 222693 states and 987269 transitions. [2021-07-09 17:56:26,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 17:56:26,526 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:56:26,526 INFO L508 BasicCegarLoop]: 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] [2021-07-09 17:56:26,526 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-09 17:56:26,526 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:56:26,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:56:26,526 INFO L82 PathProgramCache]: Analyzing trace with hash 155879188, now seen corresponding path program 12 times [2021-07-09 17:56:26,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:56:26,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17488885] [2021-07-09 17:56:26,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:56:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:56:26,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:56:26,552 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:56:26,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17488885] [2021-07-09 17:56:26,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17488885] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:56:26,553 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:56:26,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:56:26,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207299216] [2021-07-09 17:56:26,553 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 17:56:26,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:56:26,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 17:56:26,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:56:26,553 INFO L87 Difference]: Start difference. First operand 222693 states and 987269 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:31,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:56:31,895 INFO L93 Difference]: Finished difference Result 393699 states and 1713546 transitions. [2021-07-09 17:56:31,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 17:56:31,895 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 17:56:31,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:56:35,600 INFO L225 Difference]: With dead ends: 393699 [2021-07-09 17:56:35,600 INFO L226 Difference]: Without dead ends: 393021 [2021-07-09 17:56:35,600 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 14.7ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:56:38,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393021 states. [2021-07-09 17:56:47,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393021 to 222310. [2021-07-09 17:56:47,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222310 states, 222309 states have (on average 4.428525160924659) internal successors, (984501), 222309 states have internal predecessors, (984501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:49,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222310 states to 222310 states and 984501 transitions. [2021-07-09 17:56:49,922 INFO L78 Accepts]: Start accepts. Automaton has 222310 states and 984501 transitions. Word has length 46 [2021-07-09 17:56:49,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:56:49,922 INFO L482 AbstractCegarLoop]: Abstraction has 222310 states and 984501 transitions. [2021-07-09 17:56:49,922 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:49,922 INFO L276 IsEmpty]: Start isEmpty. Operand 222310 states and 984501 transitions. [2021-07-09 17:56:51,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 17:56:51,614 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:56:51,614 INFO L508 BasicCegarLoop]: 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] [2021-07-09 17:56:51,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-09 17:56:51,616 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:56:51,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:56:51,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1656916480, now seen corresponding path program 13 times [2021-07-09 17:56:51,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:56:51,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440917615] [2021-07-09 17:56:51,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:56:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:56:51,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:56:51,712 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:56:51,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440917615] [2021-07-09 17:56:51,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440917615] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:56:51,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:56:51,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:56:51,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639711622] [2021-07-09 17:56:51,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 17:56:51,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:56:51,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 17:56:51,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:56:51,713 INFO L87 Difference]: Start difference. First operand 222310 states and 984501 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:56,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:56:56,976 INFO L93 Difference]: Finished difference Result 389126 states and 1691004 transitions. [2021-07-09 17:56:56,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 17:56:56,977 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 17:56:56,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:57:01,486 INFO L225 Difference]: With dead ends: 389126 [2021-07-09 17:57:01,487 INFO L226 Difference]: Without dead ends: 388292 [2021-07-09 17:57:01,487 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.9ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:57:04,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388292 states. [2021-07-09 17:57:15,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388292 to 218179. [2021-07-09 17:57:15,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218179 states, 218178 states have (on average 4.420143185839086) internal successors, (964378), 218178 states have internal predecessors, (964378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:57:17,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218179 states to 218179 states and 964378 transitions. [2021-07-09 17:57:17,663 INFO L78 Accepts]: Start accepts. Automaton has 218179 states and 964378 transitions. Word has length 46 [2021-07-09 17:57:17,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:57:17,663 INFO L482 AbstractCegarLoop]: Abstraction has 218179 states and 964378 transitions. [2021-07-09 17:57:17,663 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:57:17,663 INFO L276 IsEmpty]: Start isEmpty. Operand 218179 states and 964378 transitions. [2021-07-09 17:57:19,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 17:57:19,096 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:57:19,096 INFO L508 BasicCegarLoop]: 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] [2021-07-09 17:57:19,097 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-09 17:57:19,097 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:57:19,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:57:19,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1874257464, now seen corresponding path program 14 times [2021-07-09 17:57:19,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:57:19,099 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357115273] [2021-07-09 17:57:19,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:57:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:57:19,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:57:19,154 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:57:19,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357115273] [2021-07-09 17:57:19,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357115273] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:57:19,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:57:19,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:57:19,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542518810] [2021-07-09 17:57:19,155 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 17:57:19,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:57:19,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 17:57:19,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:57:19,155 INFO L87 Difference]: Start difference. First operand 218179 states and 964378 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:57:23,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:57:23,526 INFO L93 Difference]: Finished difference Result 346552 states and 1495008 transitions. [2021-07-09 17:57:23,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 17:57:23,527 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 17:57:23,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:57:27,839 INFO L225 Difference]: With dead ends: 346552 [2021-07-09 17:57:27,839 INFO L226 Difference]: Without dead ends: 345856 [2021-07-09 17:57:27,840 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:57:30,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345856 states. [2021-07-09 17:57:39,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345856 to 215344. [2021-07-09 17:57:40,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215344 states, 215343 states have (on average 4.33035204301974) internal successors, (932511), 215343 states have internal predecessors, (932511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:57:42,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215344 states to 215344 states and 932511 transitions. [2021-07-09 17:57:42,785 INFO L78 Accepts]: Start accepts. Automaton has 215344 states and 932511 transitions. Word has length 46 [2021-07-09 17:57:42,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:57:42,785 INFO L482 AbstractCegarLoop]: Abstraction has 215344 states and 932511 transitions. [2021-07-09 17:57:42,786 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:57:42,786 INFO L276 IsEmpty]: Start isEmpty. Operand 215344 states and 932511 transitions. [2021-07-09 17:57:44,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 17:57:44,440 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:57:44,440 INFO L508 BasicCegarLoop]: 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] [2021-07-09 17:57:44,440 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-09 17:57:44,441 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:57:44,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:57:44,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1144267882, now seen corresponding path program 15 times [2021-07-09 17:57:44,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:57:44,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594451424] [2021-07-09 17:57:44,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:57:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:57:44,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:57:44,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:57:44,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594451424] [2021-07-09 17:57:44,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594451424] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:57:44,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:57:44,500 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:57:44,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377766909] [2021-07-09 17:57:44,500 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:57:44,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:57:44,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:57:44,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:57:44,501 INFO L87 Difference]: Start difference. First operand 215344 states and 932511 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:57:48,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:57:48,509 INFO L93 Difference]: Finished difference Result 325590 states and 1394296 transitions. [2021-07-09 17:57:48,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 17:57:48,509 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 17:57:48,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:57:52,792 INFO L225 Difference]: With dead ends: 325590 [2021-07-09 17:57:52,792 INFO L226 Difference]: Without dead ends: 324958 [2021-07-09 17:57:52,805 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 21.8ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:57:55,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324958 states. [2021-07-09 17:58:03,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324958 to 210014. [2021-07-09 17:58:03,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210014 states, 210013 states have (on average 4.320808711841648) internal successors, (907426), 210013 states have internal predecessors, (907426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:58:05,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210014 states to 210014 states and 907426 transitions. [2021-07-09 17:58:05,672 INFO L78 Accepts]: Start accepts. Automaton has 210014 states and 907426 transitions. Word has length 46 [2021-07-09 17:58:05,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:58:05,673 INFO L482 AbstractCegarLoop]: Abstraction has 210014 states and 907426 transitions. [2021-07-09 17:58:05,673 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:58:05,673 INFO L276 IsEmpty]: Start isEmpty. Operand 210014 states and 907426 transitions. [2021-07-09 17:58:06,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 17:58:06,663 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:58:06,663 INFO L508 BasicCegarLoop]: 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] [2021-07-09 17:58:06,663 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-09 17:58:06,663 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:58:06,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:58:06,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1112340872, now seen corresponding path program 16 times [2021-07-09 17:58:06,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:58:06,664 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010636742] [2021-07-09 17:58:06,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:58:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:58:06,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:58:06,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:58:06,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010636742] [2021-07-09 17:58:06,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010636742] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:58:06,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:58:06,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:58:06,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471744792] [2021-07-09 17:58:06,703 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 17:58:06,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:58:06,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 17:58:06,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:58:06,704 INFO L87 Difference]: Start difference. First operand 210014 states and 907426 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:58:10,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:58:10,225 INFO L93 Difference]: Finished difference Result 316757 states and 1325452 transitions. [2021-07-09 17:58:10,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:58:10,226 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 17:58:10,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:58:13,771 INFO L225 Difference]: With dead ends: 316757 [2021-07-09 17:58:13,771 INFO L226 Difference]: Without dead ends: 314453 [2021-07-09 17:58:13,771 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 34.0ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:58:16,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314453 states. [2021-07-09 17:58:23,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314453 to 209291. [2021-07-09 17:58:24,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209291 states, 209290 states have (on average 4.209207319986621) internal successors, (880945), 209290 states have internal predecessors, (880945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:58:25,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209291 states to 209291 states and 880945 transitions. [2021-07-09 17:58:25,852 INFO L78 Accepts]: Start accepts. Automaton has 209291 states and 880945 transitions. Word has length 46 [2021-07-09 17:58:25,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:58:25,853 INFO L482 AbstractCegarLoop]: Abstraction has 209291 states and 880945 transitions. [2021-07-09 17:58:25,853 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:58:25,853 INFO L276 IsEmpty]: Start isEmpty. Operand 209291 states and 880945 transitions. [2021-07-09 17:58:26,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 17:58:26,862 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:58:26,862 INFO L508 BasicCegarLoop]: 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] [2021-07-09 17:58:26,862 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-09 17:58:26,862 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:58:26,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:58:26,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1010635190, now seen corresponding path program 17 times [2021-07-09 17:58:26,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:58:26,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325044193] [2021-07-09 17:58:26,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:58:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:58:26,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:58:26,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:58:26,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325044193] [2021-07-09 17:58:26,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325044193] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:58:26,901 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:58:26,901 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:58:26,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959562041] [2021-07-09 17:58:26,902 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:58:26,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:58:26,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:58:26,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:58:26,903 INFO L87 Difference]: Start difference. First operand 209291 states and 880945 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:58:30,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:58:30,044 INFO L93 Difference]: Finished difference Result 301671 states and 1254865 transitions. [2021-07-09 17:58:30,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 17:58:30,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 17:58:30,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:58:33,340 INFO L225 Difference]: With dead ends: 301671 [2021-07-09 17:58:33,340 INFO L226 Difference]: Without dead ends: 300815 [2021-07-09 17:58:33,341 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 18.3ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:58:35,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300815 states. [2021-07-09 17:58:43,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300815 to 205867. [2021-07-09 17:58:44,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205867 states, 205866 states have (on average 4.184071191940388) internal successors, (861358), 205866 states have internal predecessors, (861358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:58:45,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205867 states to 205867 states and 861358 transitions. [2021-07-09 17:58:45,913 INFO L78 Accepts]: Start accepts. Automaton has 205867 states and 861358 transitions. Word has length 46 [2021-07-09 17:58:45,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:58:45,913 INFO L482 AbstractCegarLoop]: Abstraction has 205867 states and 861358 transitions. [2021-07-09 17:58:45,913 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:58:45,914 INFO L276 IsEmpty]: Start isEmpty. Operand 205867 states and 861358 transitions. [2021-07-09 17:58:46,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 17:58:46,982 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:58:46,982 INFO L508 BasicCegarLoop]: 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] [2021-07-09 17:58:46,982 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-07-09 17:58:46,982 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:58:46,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:58:46,983 INFO L82 PathProgramCache]: Analyzing trace with hash -220526744, now seen corresponding path program 18 times [2021-07-09 17:58:46,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:58:46,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065158004] [2021-07-09 17:58:46,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:58:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:58:47,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:58:47,030 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:58:47,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065158004] [2021-07-09 17:58:47,030 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065158004] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:58:47,030 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:58:47,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:58:47,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710184418] [2021-07-09 17:58:47,031 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 17:58:47,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:58:47,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 17:58:47,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:58:47,031 INFO L87 Difference]: Start difference. First operand 205867 states and 861358 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:58:49,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:58:49,785 INFO L93 Difference]: Finished difference Result 301500 states and 1218655 transitions. [2021-07-09 17:58:49,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:58:49,785 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 17:58:49,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:58:52,750 INFO L225 Difference]: With dead ends: 301500 [2021-07-09 17:58:52,750 INFO L226 Difference]: Without dead ends: 298930 [2021-07-09 17:58:52,750 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 38.9ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:58:55,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298930 states. [2021-07-09 17:59:02,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298930 to 203045. [2021-07-09 17:59:02,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203045 states, 203044 states have (on average 4.065946297354268) internal successors, (825566), 203044 states have internal predecessors, (825566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:59:04,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203045 states to 203045 states and 825566 transitions. [2021-07-09 17:59:04,382 INFO L78 Accepts]: Start accepts. Automaton has 203045 states and 825566 transitions. Word has length 46 [2021-07-09 17:59:04,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:59:04,382 INFO L482 AbstractCegarLoop]: Abstraction has 203045 states and 825566 transitions. [2021-07-09 17:59:04,383 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:59:04,383 INFO L276 IsEmpty]: Start isEmpty. Operand 203045 states and 825566 transitions. [2021-07-09 17:59:05,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 17:59:05,355 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:59:05,355 INFO L508 BasicCegarLoop]: 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] [2021-07-09 17:59:05,355 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-07-09 17:59:05,356 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:59:05,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:59:05,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1304939288, now seen corresponding path program 19 times [2021-07-09 17:59:05,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:59:05,356 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852328584] [2021-07-09 17:59:05,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:59:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:59:05,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:59:05,417 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:59:05,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852328584] [2021-07-09 17:59:05,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852328584] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:59:05,418 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:59:05,418 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:59:05,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292328635] [2021-07-09 17:59:05,418 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 17:59:05,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:59:05,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 17:59:05,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:59:05,419 INFO L87 Difference]: Start difference. First operand 203045 states and 825566 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:59:08,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:59:08,627 INFO L93 Difference]: Finished difference Result 288060 states and 1146724 transitions. [2021-07-09 17:59:08,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:59:08,628 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 17:59:08,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:59:11,256 INFO L225 Difference]: With dead ends: 288060 [2021-07-09 17:59:11,256 INFO L226 Difference]: Without dead ends: 284768 [2021-07-09 17:59:11,256 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 38.2ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:59:13,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284768 states. [2021-07-09 17:59:20,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284768 to 191781. [2021-07-09 17:59:20,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191781 states, 191780 states have (on average 4.031426634685578) internal successors, (773147), 191780 states have internal predecessors, (773147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:59:22,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191781 states to 191781 states and 773147 transitions. [2021-07-09 17:59:22,125 INFO L78 Accepts]: Start accepts. Automaton has 191781 states and 773147 transitions. Word has length 46 [2021-07-09 17:59:22,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:59:22,125 INFO L482 AbstractCegarLoop]: Abstraction has 191781 states and 773147 transitions. [2021-07-09 17:59:22,125 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:59:22,125 INFO L276 IsEmpty]: Start isEmpty. Operand 191781 states and 773147 transitions. [2021-07-09 17:59:23,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 17:59:23,006 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:59:23,006 INFO L508 BasicCegarLoop]: 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] [2021-07-09 17:59:23,007 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-07-09 17:59:23,007 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:59:23,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:59:23,007 INFO L82 PathProgramCache]: Analyzing trace with hash 645106892, now seen corresponding path program 20 times [2021-07-09 17:59:23,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:59:23,007 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590871255] [2021-07-09 17:59:23,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:59:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:59:23,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:59:23,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:59:23,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590871255] [2021-07-09 17:59:23,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590871255] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:59:23,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:59:23,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:59:23,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114436186] [2021-07-09 17:59:23,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 17:59:23,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:59:23,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 17:59:23,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:59:23,073 INFO L87 Difference]: Start difference. First operand 191781 states and 773147 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:59:25,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:59:25,709 INFO L93 Difference]: Finished difference Result 289421 states and 1160347 transitions. [2021-07-09 17:59:25,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:59:25,710 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 17:59:25,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:59:27,428 INFO L225 Difference]: With dead ends: 289421 [2021-07-09 17:59:27,428 INFO L226 Difference]: Without dead ends: 289101 [2021-07-09 17:59:27,428 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 31.1ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:59:29,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289101 states. [2021-07-09 17:59:37,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289101 to 192581. [2021-07-09 17:59:37,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192581 states, 192580 states have (on average 4.028969778793229) internal successors, (775899), 192580 states have internal predecessors, (775899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:59:38,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192581 states to 192581 states and 775899 transitions. [2021-07-09 17:59:38,868 INFO L78 Accepts]: Start accepts. Automaton has 192581 states and 775899 transitions. Word has length 46 [2021-07-09 17:59:38,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:59:38,868 INFO L482 AbstractCegarLoop]: Abstraction has 192581 states and 775899 transitions. [2021-07-09 17:59:38,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:59:38,869 INFO L276 IsEmpty]: Start isEmpty. Operand 192581 states and 775899 transitions. [2021-07-09 17:59:39,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 17:59:39,700 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:59:39,700 INFO L508 BasicCegarLoop]: 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] [2021-07-09 17:59:39,700 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-07-09 17:59:39,700 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:59:39,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:59:39,700 INFO L82 PathProgramCache]: Analyzing trace with hash 613179882, now seen corresponding path program 21 times [2021-07-09 17:59:39,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:59:39,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743047480] [2021-07-09 17:59:39,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:59:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:59:39,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:59:39,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:59:39,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743047480] [2021-07-09 17:59:39,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743047480] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:59:39,757 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:59:39,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 17:59:39,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246261565] [2021-07-09 17:59:39,757 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:59:39,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:59:39,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:59:39,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:59:39,757 INFO L87 Difference]: Start difference. First operand 192581 states and 775899 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:59:42,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:59:42,490 INFO L93 Difference]: Finished difference Result 289605 states and 1158403 transitions. [2021-07-09 17:59:42,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 17:59:42,490 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 17:59:42,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:59:44,648 INFO L225 Difference]: With dead ends: 289605 [2021-07-09 17:59:44,649 INFO L226 Difference]: Without dead ends: 287589 [2021-07-09 17:59:44,649 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 40.7ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-07-09 17:59:46,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287589 states. [2021-07-09 17:59:54,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287589 to 190411. [2021-07-09 17:59:54,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190411 states, 190410 states have (on average 4.019452759834042) internal successors, (765344), 190410 states have internal predecessors, (765344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:59:56,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190411 states to 190411 states and 765344 transitions. [2021-07-09 17:59:56,249 INFO L78 Accepts]: Start accepts. Automaton has 190411 states and 765344 transitions. Word has length 46 [2021-07-09 17:59:56,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:59:56,249 INFO L482 AbstractCegarLoop]: Abstraction has 190411 states and 765344 transitions. [2021-07-09 17:59:56,249 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:59:56,249 INFO L276 IsEmpty]: Start isEmpty. Operand 190411 states and 765344 transitions. [2021-07-09 17:59:56,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 17:59:56,842 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:59:56,843 INFO L508 BasicCegarLoop]: 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] [2021-07-09 17:59:56,843 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-07-09 17:59:56,843 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:59:56,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:59:56,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1984195430, now seen corresponding path program 22 times [2021-07-09 17:59:56,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:59:56,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484683736] [2021-07-09 17:59:56,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:59:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:59:56,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:59:56,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:59:56,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484683736] [2021-07-09 17:59:56,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484683736] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:59:56,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:59:56,885 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:59:56,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007104186] [2021-07-09 17:59:56,885 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 17:59:56,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:59:56,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 17:59:56,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:59:56,885 INFO L87 Difference]: Start difference. First operand 190411 states and 765344 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:59:59,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:59:59,936 INFO L93 Difference]: Finished difference Result 295333 states and 1175576 transitions. [2021-07-09 17:59:59,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 17:59:59,936 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 17:59:59,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:00:01,801 INFO L225 Difference]: With dead ends: 295333 [2021-07-09 18:00:01,801 INFO L226 Difference]: Without dead ends: 289109 [2021-07-09 18:00:01,801 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 58.5ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:00:03,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289109 states. [2021-07-09 18:00:12,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289109 to 197773. [2021-07-09 18:00:13,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197773 states, 197772 states have (on average 3.9816859818376718) internal successors, (787466), 197772 states have internal predecessors, (787466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:00:14,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197773 states to 197773 states and 787466 transitions. [2021-07-09 18:00:14,739 INFO L78 Accepts]: Start accepts. Automaton has 197773 states and 787466 transitions. Word has length 46 [2021-07-09 18:00:14,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:00:14,739 INFO L482 AbstractCegarLoop]: Abstraction has 197773 states and 787466 transitions. [2021-07-09 18:00:14,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:00:14,740 INFO L276 IsEmpty]: Start isEmpty. Operand 197773 states and 787466 transitions. [2021-07-09 18:00:15,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 18:00:15,788 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:00:15,788 INFO L508 BasicCegarLoop]: 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] [2021-07-09 18:00:15,788 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-07-09 18:00:15,788 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 18:00:15,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:00:15,789 INFO L82 PathProgramCache]: Analyzing trace with hash 747429548, now seen corresponding path program 23 times [2021-07-09 18:00:15,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:00:15,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531167422] [2021-07-09 18:00:15,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:00:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:00:15,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:00:15,824 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:00:15,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531167422] [2021-07-09 18:00:15,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531167422] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:00:15,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:00:15,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 18:00:15,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320552611] [2021-07-09 18:00:15,824 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 18:00:15,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:00:15,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 18:00:15,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-07-09 18:00:15,825 INFO L87 Difference]: Start difference. First operand 197773 states and 787466 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:00:19,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:00:19,172 INFO L93 Difference]: Finished difference Result 299086 states and 1182852 transitions. [2021-07-09 18:00:19,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 18:00:19,172 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 18:00:19,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:00:21,259 INFO L225 Difference]: With dead ends: 299086 [2021-07-09 18:00:21,260 INFO L226 Difference]: Without dead ends: 298566 [2021-07-09 18:00:21,260 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 25.9ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-07-09 18:00:23,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298566 states. [2021-07-09 18:00:31,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298566 to 198823. [2021-07-09 18:00:32,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198823 states, 198822 states have (on average 3.9825371437768458) internal successors, (791816), 198822 states have internal predecessors, (791816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:00:33,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198823 states to 198823 states and 791816 transitions. [2021-07-09 18:00:33,887 INFO L78 Accepts]: Start accepts. Automaton has 198823 states and 791816 transitions. Word has length 46 [2021-07-09 18:00:33,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:00:33,887 INFO L482 AbstractCegarLoop]: Abstraction has 198823 states and 791816 transitions. [2021-07-09 18:00:33,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:00:33,887 INFO L276 IsEmpty]: Start isEmpty. Operand 198823 states and 791816 transitions. [2021-07-09 18:00:34,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 18:00:34,554 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:00:34,554 INFO L508 BasicCegarLoop]: 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] [2021-07-09 18:00:34,554 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-07-09 18:00:34,554 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 18:00:34,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:00:34,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1537537994, now seen corresponding path program 24 times [2021-07-09 18:00:34,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:00:34,555 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693704894] [2021-07-09 18:00:34,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:00:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:00:34,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:00:34,598 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:00:34,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693704894] [2021-07-09 18:00:34,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693704894] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:00:34,598 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:00:34,598 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 18:00:34,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065671939] [2021-07-09 18:00:34,599 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 18:00:34,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:00:34,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 18:00:34,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-09 18:00:34,599 INFO L87 Difference]: Start difference. First operand 198823 states and 791816 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:00:37,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:00:37,870 INFO L93 Difference]: Finished difference Result 294761 states and 1162068 transitions. [2021-07-09 18:00:37,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 18:00:37,871 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 18:00:37,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:00:39,831 INFO L225 Difference]: With dead ends: 294761 [2021-07-09 18:00:39,831 INFO L226 Difference]: Without dead ends: 292673 [2021-07-09 18:00:39,832 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 38.1ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-07-09 18:00:41,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292673 states. [2021-07-09 18:00:49,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292673 to 193969. [2021-07-09 18:00:50,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193969 states, 193968 states have (on average 3.976387857790976) internal successors, (771292), 193968 states have internal predecessors, (771292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:00:52,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193969 states to 193969 states and 771292 transitions. [2021-07-09 18:00:52,062 INFO L78 Accepts]: Start accepts. Automaton has 193969 states and 771292 transitions. Word has length 46 [2021-07-09 18:00:52,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:00:52,062 INFO L482 AbstractCegarLoop]: Abstraction has 193969 states and 771292 transitions. [2021-07-09 18:00:52,062 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:00:52,062 INFO L276 IsEmpty]: Start isEmpty. Operand 193969 states and 771292 transitions. [2021-07-09 18:00:52,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 18:00:52,965 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:00:52,965 INFO L508 BasicCegarLoop]: 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] [2021-07-09 18:00:52,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-07-09 18:00:52,966 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 18:00:52,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:00:52,966 INFO L82 PathProgramCache]: Analyzing trace with hash -212301498, now seen corresponding path program 25 times [2021-07-09 18:00:52,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:00:52,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117282654] [2021-07-09 18:00:52,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:00:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:00:53,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:00:53,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:00:53,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117282654] [2021-07-09 18:00:53,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117282654] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:00:53,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:00:53,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 18:00:53,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802810365] [2021-07-09 18:00:53,036 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 18:00:53,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:00:53,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 18:00:53,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-07-09 18:00:53,036 INFO L87 Difference]: Start difference. First operand 193969 states and 771292 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:00:55,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:00:55,970 INFO L93 Difference]: Finished difference Result 293030 states and 1142523 transitions. [2021-07-09 18:00:55,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 18:00:55,971 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 18:00:55,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:00:57,828 INFO L225 Difference]: With dead ends: 293030 [2021-07-09 18:00:57,828 INFO L226 Difference]: Without dead ends: 291722 [2021-07-09 18:00:57,828 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 71.2ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:00:59,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291722 states. [2021-07-09 18:01:06,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291722 to 200246. [2021-07-09 18:01:07,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200246 states, 200245 states have (on average 3.9184449049913854) internal successors, (784649), 200245 states have internal predecessors, (784649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:01:09,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200246 states to 200246 states and 784649 transitions. [2021-07-09 18:01:09,610 INFO L78 Accepts]: Start accepts. Automaton has 200246 states and 784649 transitions. Word has length 46 [2021-07-09 18:01:09,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:01:09,610 INFO L482 AbstractCegarLoop]: Abstraction has 200246 states and 784649 transitions. [2021-07-09 18:01:09,611 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:01:09,611 INFO L276 IsEmpty]: Start isEmpty. Operand 200246 states and 784649 transitions. [2021-07-09 18:01:10,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 18:01:10,896 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:01:10,896 INFO L508 BasicCegarLoop]: 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] [2021-07-09 18:01:10,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-07-09 18:01:10,897 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 18:01:10,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:01:10,897 INFO L82 PathProgramCache]: Analyzing trace with hash -644184792, now seen corresponding path program 26 times [2021-07-09 18:01:10,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:01:10,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610090284] [2021-07-09 18:01:10,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:01:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:01:10,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:01:10,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:01:10,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610090284] [2021-07-09 18:01:10,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610090284] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:01:10,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:01:10,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 18:01:10,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272091927] [2021-07-09 18:01:10,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 18:01:10,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:01:10,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 18:01:10,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-09 18:01:10,983 INFO L87 Difference]: Start difference. First operand 200246 states and 784649 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:01:14,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:01:14,015 INFO L93 Difference]: Finished difference Result 293831 states and 1136141 transitions. [2021-07-09 18:01:14,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 18:01:14,016 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 18:01:14,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:01:15,701 INFO L225 Difference]: With dead ends: 293831 [2021-07-09 18:01:15,702 INFO L226 Difference]: Without dead ends: 290963 [2021-07-09 18:01:15,702 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 38.1ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-07-09 18:01:17,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290963 states. [2021-07-09 18:01:25,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290963 to 193515. [2021-07-09 18:01:26,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193515 states, 193514 states have (on average 3.905562388250979) internal successors, (755781), 193514 states have internal predecessors, (755781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:01:27,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193515 states to 193515 states and 755781 transitions. [2021-07-09 18:01:27,262 INFO L78 Accepts]: Start accepts. Automaton has 193515 states and 755781 transitions. Word has length 46 [2021-07-09 18:01:27,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:01:27,263 INFO L482 AbstractCegarLoop]: Abstraction has 193515 states and 755781 transitions. [2021-07-09 18:01:27,263 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:01:27,263 INFO L276 IsEmpty]: Start isEmpty. Operand 193515 states and 755781 transitions. [2021-07-09 18:01:28,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 18:01:28,139 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:01:28,139 INFO L508 BasicCegarLoop]: 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] [2021-07-09 18:01:28,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-07-09 18:01:28,139 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 18:01:28,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:01:28,140 INFO L82 PathProgramCache]: Analyzing trace with hash 15093510, now seen corresponding path program 27 times [2021-07-09 18:01:28,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:01:28,140 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174835609] [2021-07-09 18:01:28,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:01:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:01:28,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:01:28,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:01:28,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174835609] [2021-07-09 18:01:28,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174835609] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:01:28,183 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:01:28,183 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 18:01:28,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078657111] [2021-07-09 18:01:28,183 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 18:01:28,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:01:28,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 18:01:28,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-07-09 18:01:28,184 INFO L87 Difference]: Start difference. First operand 193515 states and 755781 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:01:30,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:01:30,994 INFO L93 Difference]: Finished difference Result 283290 states and 1078797 transitions. [2021-07-09 18:01:30,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 18:01:30,995 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 18:01:30,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2021-07-09 18:01:32,625 INFO L225 Difference]: With dead ends: 283290 [2021-07-09 18:01:32,625 INFO L226 Difference]: Without dead ends: 280266 [2021-07-09 18:01:32,625 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 61.2ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:01:34,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280266 states. [2021-07-09 18:01:34,108 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-07-09 18:01:34,108 WARN L547 AbstractCegarLoop]: Verification canceled [2021-07-09 18:01:34,110 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 18:01:34,112 WARN L196 ceAbstractionStarter]: Timeout [2021-07-09 18:01:34,112 INFO L202 PluginConnector]: Adding new model ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 06:01:34 BasicIcfg [2021-07-09 18:01:34,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 18:01:34,113 INFO L168 Benchmark]: Toolchain (without parser) took 522168.58 ms. Allocated memory was 192.9 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 171.4 MB in the beginning and 4.3 GB in the end (delta: -4.1 GB). Peak memory consumption was 3.8 GB. Max. memory is 8.0 GB. [2021-07-09 18:01:34,113 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 192.9 MB. Free memory is still 172.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 18:01:34,113 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.81 ms. Allocated memory is still 192.9 MB. Free memory was 171.3 MB in the beginning and 169.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-09 18:01:34,113 INFO L168 Benchmark]: Boogie Preprocessor took 23.69 ms. Allocated memory is still 192.9 MB. Free memory was 169.8 MB in the beginning and 168.9 MB in the end (delta: 929.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 18:01:34,113 INFO L168 Benchmark]: RCFGBuilder took 280.55 ms. Allocated memory is still 192.9 MB. Free memory was 168.8 MB in the beginning and 152.2 MB in the end (delta: 16.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-07-09 18:01:34,113 INFO L168 Benchmark]: TraceAbstraction took 521834.06 ms. Allocated memory was 192.9 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 151.7 MB in the beginning and 4.3 GB in the end (delta: -4.1 GB). Peak memory consumption was 3.8 GB. Max. memory is 8.0 GB. [2021-07-09 18:01:34,114 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 192.9 MB. Free memory is still 172.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 25.81 ms. Allocated memory is still 192.9 MB. Free memory was 171.3 MB in the beginning and 169.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 23.69 ms. Allocated memory is still 192.9 MB. Free memory was 169.8 MB in the beginning and 168.9 MB in the end (delta: 929.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 280.55 ms. Allocated memory is still 192.9 MB. Free memory was 168.8 MB in the beginning and 152.2 MB in the end (delta: 16.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 521834.06 ms. Allocated memory was 192.9 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 151.7 MB in the beginning and 4.3 GB in the end (delta: -4.1 GB). Peak memory consumption was 3.8 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 13 procedures, 98 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 521698.2ms, OverallIterations: 27, TraceHistogramMax: 1, EmptinessCheckTime: 25952.5ms, AutomataDifference: 175059.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2049.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2550 SDtfs, 3963 SDslu, 7986 SDs, 0 SdLazy, 7965 SolverSat, 1519 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4738.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 331 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 944.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=224674occurred in iteration=10, InterpolantAutomatonStates: 234, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 316733.2ms AutomataMinimizationTime, 27 MinimizatonAttempts, 2660102 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 67.8ms SsaConstructionTime, 234.5ms SatisfiabilityAnalysisTime, 1300.7ms InterpolantComputationTime, 1242 NumberOfCodeBlocks, 1242 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 1215 ConstructedInterpolants, 0 QuantifiedInterpolants, 3519 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown