/usr/bin/java -Xmx16000000000 -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 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 22:38:43,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 22:38:43,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 22:38:43,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 22:38:43,616 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 [2021-06-05 22:38:43,647 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 22:38:43,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 22:38:43,648 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 22:38:43,648 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 22:38:43,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 22:38:43,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 22:38:43,650 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 22:38:43,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 22:38:43,651 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 22:38:43,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 22:38:43,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 22:38:43,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 22:38:43,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 22:38:43,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 22:38:43,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 22:38:43,652 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 22:38:43,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 22:38:43,653 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 22:38:43,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 22:38:43,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 22:38:43,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 22:38:43,653 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 22:38:43,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 22:38:43,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 22:38:43,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 22:38:43,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 22:38:43,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 22:38:43,654 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 22:38:43,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 22:38:43,654 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 22:38:43,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 22:38:43,654 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 22:38:43,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 22:38:43,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 22:38:43,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 22:38:43,949 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 22:38:43,950 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 22:38:43,951 INFO L432 ainManager$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 [2021-06-05 22:38:43,951 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl' [2021-06-05 22:38:43,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 22:38:43,990 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 22:38:43,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 22:38:43,993 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 22:38:43,993 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 22:38:44,004 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 05.06 10:38:43" (1/1) ... [2021-06-05 22:38:44,011 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 05.06 10:38:43" (1/1) ... [2021-06-05 22:38:44,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 22:38:44,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 22:38:44,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 22:38:44,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 22:38:44,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:38:43" (1/1) ... [2021-06-05 22:38:44,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:38:43" (1/1) ... [2021-06-05 22:38:44,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:38:43" (1/1) ... [2021-06-05 22:38:44,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:38:43" (1/1) ... [2021-06-05 22:38:44,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:38:43" (1/1) ... [2021-06-05 22:38:44,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:38:43" (1/1) ... [2021-06-05 22:38:44,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:38:43" (1/1) ... [2021-06-05 22:38:44,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 22:38:44,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 22:38:44,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 22:38:44,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 22:38:44,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:38:43" (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 [2021-06-05 22:38:44,084 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 22:38:44,084 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 22:38:44,084 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 22:38:44,084 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 22:38:44,084 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 22:38:44,085 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 22:38:44,085 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 22:38:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 22:38:44,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 22:38:44,085 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 22:38:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 22:38:44,085 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 22:38:44,086 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-05 22:38:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-05 22:38:44,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-05 22:38:44,086 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-06-05 22:38:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-06-05 22:38:44,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-06-05 22:38:44,086 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-06-05 22:38:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-06-05 22:38:44,087 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-06-05 22:38:44,087 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 22:38:44,342 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 22:38:44,342 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 22:38:44,344 INFO L202 PluginConnector]: Adding new model ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:38:44 BoogieIcfgContainer [2021-06-05 22:38:44,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 22:38:44,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 22:38:44,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 22:38:44,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 22:38:44,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:38:43" (1/2) ... [2021-06-05 22:38:44,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42a1764b and model type ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 10:38:44, skipping insertion in model container [2021-06-05 22:38:44,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:38:44" (2/2) ... [2021-06-05 22:38:44,360 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-6.wvr.bpl [2021-06-05 22:38:44,365 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 22:38:44,365 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 22:38:44,365 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 22:38:44,366 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 22:38:44,451 INFO L149 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-06-05 22:38:44,467 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-06-05 22:38:44,482 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 22:38:44,482 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 22:38:44,482 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 22:38:44,482 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 22:38:44,482 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 22:38:44,482 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 22:38:44,482 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 22:38:44,482 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 22:38:44,492 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 54 transitions, 156 flow [2021-06-05 22:39:02,355 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 74654 states, 74652 states have (on average 5.020736216042437) internal successors, (374808), 74653 states have internal predecessors, (374808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:39:02,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 74654 states, 74652 states have (on average 5.020736216042437) internal successors, (374808), 74653 states have internal predecessors, (374808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:39:03,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:39:03,162 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:39:03,162 INFO L554 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] [2021-06-05 22:39:03,163 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]=== [2021-06-05 22:39:03,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:39:03,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1161035374, now seen corresponding path program 1 times [2021-06-05 22:39:03,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:39:03,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440942641] [2021-06-05 22:39:03,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:39:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:39:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:39:03,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:39:03,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440942641] [2021-06-05 22:39:03,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440942641] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:39:03,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:39:03,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 22:39:03,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314390192] [2021-06-05 22:39:03,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 22:39:03,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:39:03,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 22:39:03,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 22:39:03,558 INFO L87 Difference]: Start difference. First operand has 74654 states, 74652 states have (on average 5.020736216042437) internal successors, (374808), 74653 states have internal predecessors, (374808), 0 states have call successors, (0), 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) [2021-06-05 22:39:06,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:39:06,119 INFO L93 Difference]: Finished difference Result 201088 states and 980337 transitions. [2021-06-05 22:39:06,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 22:39:06,121 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 [2021-06-05 22:39:06,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:39:07,543 INFO L225 Difference]: With dead ends: 201088 [2021-06-05 22:39:07,543 INFO L226 Difference]: Without dead ends: 201088 [2021-06-05 22:39:07,544 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 39.5ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:39:08,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201088 states. [2021-06-05 22:39:13,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201088 to 100373. [2021-06-05 22:39:14,173 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) [2021-06-05 22:39:15,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100373 states to 100373 states and 494834 transitions. [2021-06-05 22:39:15,281 INFO L78 Accepts]: Start accepts. Automaton has 100373 states and 494834 transitions. Word has length 46 [2021-06-05 22:39:15,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:39:15,281 INFO L482 AbstractCegarLoop]: Abstraction has 100373 states and 494834 transitions. [2021-06-05 22:39:15,282 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) [2021-06-05 22:39:15,283 INFO L276 IsEmpty]: Start isEmpty. Operand 100373 states and 494834 transitions. [2021-06-05 22:39:15,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:39:15,803 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:39:15,803 INFO L554 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] [2021-06-05 22:39:15,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 22:39:15,804 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]=== [2021-06-05 22:39:15,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:39:15,805 INFO L82 PathProgramCache]: Analyzing trace with hash 118219790, now seen corresponding path program 2 times [2021-06-05 22:39:15,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:39:15,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123922027] [2021-06-05 22:39:15,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:39:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:39:15,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:39:15,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:39:15,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123922027] [2021-06-05 22:39:15,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123922027] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:39:15,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:39:15,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 22:39:15,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216735004] [2021-06-05 22:39:15,869 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 22:39:15,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:39:15,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 22:39:15,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:39:15,870 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) [2021-06-05 22:39:18,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:39:18,775 INFO L93 Difference]: Finished difference Result 237543 states and 1143295 transitions. [2021-06-05 22:39:18,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 22:39:18,776 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 [2021-06-05 22:39:18,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:39:20,240 INFO L225 Difference]: With dead ends: 237543 [2021-06-05 22:39:20,241 INFO L226 Difference]: Without dead ends: 237543 [2021-06-05 22:39:20,242 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 24.1ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:39:21,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237543 states. [2021-06-05 22:39:25,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237543 to 124242. [2021-06-05 22:39:26,045 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) [2021-06-05 22:39:27,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124242 states to 124242 states and 604495 transitions. [2021-06-05 22:39:27,309 INFO L78 Accepts]: Start accepts. Automaton has 124242 states and 604495 transitions. Word has length 46 [2021-06-05 22:39:27,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:39:27,310 INFO L482 AbstractCegarLoop]: Abstraction has 124242 states and 604495 transitions. [2021-06-05 22:39:27,310 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) [2021-06-05 22:39:27,310 INFO L276 IsEmpty]: Start isEmpty. Operand 124242 states and 604495 transitions. [2021-06-05 22:39:27,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:39:27,627 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:39:27,627 INFO L554 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] [2021-06-05 22:39:27,627 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 22:39:27,627 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]=== [2021-06-05 22:39:27,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:39:27,628 INFO L82 PathProgramCache]: Analyzing trace with hash 126568656, now seen corresponding path program 3 times [2021-06-05 22:39:27,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:39:27,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386627738] [2021-06-05 22:39:27,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:39:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:39:27,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:39:27,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:39:27,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386627738] [2021-06-05 22:39:27,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386627738] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:39:27,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:39:27,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:39:27,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639009087] [2021-06-05 22:39:27,729 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:39:27,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:39:27,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:39:27,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:39:27,734 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) [2021-06-05 22:39:30,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:39:30,361 INFO L93 Difference]: Finished difference Result 232977 states and 1116666 transitions. [2021-06-05 22:39:30,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 22:39:30,362 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 [2021-06-05 22:39:30,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:39:32,012 INFO L225 Difference]: With dead ends: 232977 [2021-06-05 22:39:32,012 INFO L226 Difference]: Without dead ends: 232977 [2021-06-05 22:39:32,012 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 35.8ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:39:33,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232977 states. [2021-06-05 22:39:37,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232977 to 140760. [2021-06-05 22:39:37,523 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) [2021-06-05 22:39:39,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140760 states to 140760 states and 682495 transitions. [2021-06-05 22:39:39,090 INFO L78 Accepts]: Start accepts. Automaton has 140760 states and 682495 transitions. Word has length 46 [2021-06-05 22:39:39,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:39:39,091 INFO L482 AbstractCegarLoop]: Abstraction has 140760 states and 682495 transitions. [2021-06-05 22:39:39,091 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) [2021-06-05 22:39:39,091 INFO L276 IsEmpty]: Start isEmpty. Operand 140760 states and 682495 transitions. [2021-06-05 22:39:39,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:39:39,497 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:39:39,497 INFO L554 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] [2021-06-05 22:39:39,497 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 22:39:39,498 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]=== [2021-06-05 22:39:39,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:39:39,498 INFO L82 PathProgramCache]: Analyzing trace with hash 151712618, now seen corresponding path program 4 times [2021-06-05 22:39:39,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:39:39,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185182250] [2021-06-05 22:39:39,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:39:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:39:39,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:39:39,579 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:39:39,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185182250] [2021-06-05 22:39:39,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185182250] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:39:39,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:39:39,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:39:39,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236504362] [2021-06-05 22:39:39,582 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:39:39,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:39:39,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:39:39,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:39:39,583 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) [2021-06-05 22:39:42,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:39:42,268 INFO L93 Difference]: Finished difference Result 207060 states and 995129 transitions. [2021-06-05 22:39:42,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 22:39:42,268 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 [2021-06-05 22:39:42,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:39:43,112 INFO L225 Difference]: With dead ends: 207060 [2021-06-05 22:39:43,112 INFO L226 Difference]: Without dead ends: 207060 [2021-06-05 22:39:43,112 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 35.5ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:39:44,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207060 states. [2021-06-05 22:39:48,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207060 to 146091. [2021-06-05 22:39:48,995 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) [2021-06-05 22:39:49,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146091 states to 146091 states and 706032 transitions. [2021-06-05 22:39:49,695 INFO L78 Accepts]: Start accepts. Automaton has 146091 states and 706032 transitions. Word has length 46 [2021-06-05 22:39:49,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:39:49,696 INFO L482 AbstractCegarLoop]: Abstraction has 146091 states and 706032 transitions. [2021-06-05 22:39:49,696 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) [2021-06-05 22:39:49,696 INFO L276 IsEmpty]: Start isEmpty. Operand 146091 states and 706032 transitions. [2021-06-05 22:39:50,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:39:50,902 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:39:50,902 INFO L554 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] [2021-06-05 22:39:50,902 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 22:39:50,902 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]=== [2021-06-05 22:39:50,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:39:50,903 INFO L82 PathProgramCache]: Analyzing trace with hash -2037963086, now seen corresponding path program 5 times [2021-06-05 22:39:50,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:39:50,903 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515900975] [2021-06-05 22:39:50,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:39:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:39:50,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:39:50,983 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:39:50,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515900975] [2021-06-05 22:39:50,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515900975] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:39:50,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:39:50,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:39:50,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469995950] [2021-06-05 22:39:50,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:39:50,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:39:50,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:39:50,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:39:50,985 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) [2021-06-05 22:39:53,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:39:53,248 INFO L93 Difference]: Finished difference Result 271147 states and 1272171 transitions. [2021-06-05 22:39:53,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 22:39:53,248 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 [2021-06-05 22:39:53,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:39:55,057 INFO L225 Difference]: With dead ends: 271147 [2021-06-05 22:39:55,058 INFO L226 Difference]: Without dead ends: 271147 [2021-06-05 22:39:55,058 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 22:39:56,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271147 states. [2021-06-05 22:40:01,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271147 to 164447. [2021-06-05 22:40:01,949 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) [2021-06-05 22:40:03,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164447 states to 164447 states and 774918 transitions. [2021-06-05 22:40:03,720 INFO L78 Accepts]: Start accepts. Automaton has 164447 states and 774918 transitions. Word has length 46 [2021-06-05 22:40:03,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:40:03,720 INFO L482 AbstractCegarLoop]: Abstraction has 164447 states and 774918 transitions. [2021-06-05 22:40:03,720 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) [2021-06-05 22:40:03,720 INFO L276 IsEmpty]: Start isEmpty. Operand 164447 states and 774918 transitions. [2021-06-05 22:40:04,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:40:04,508 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:40:04,508 INFO L554 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] [2021-06-05 22:40:04,508 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 22:40:04,508 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]=== [2021-06-05 22:40:04,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:40:04,509 INFO L82 PathProgramCache]: Analyzing trace with hash 960821742, now seen corresponding path program 6 times [2021-06-05 22:40:04,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:40:04,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594331535] [2021-06-05 22:40:04,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:40:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:40:04,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:40:04,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:40:04,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594331535] [2021-06-05 22:40:04,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594331535] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:40:04,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:40:04,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:40:04,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669584500] [2021-06-05 22:40:04,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:40:04,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:40:04,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:40:04,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:40:04,674 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) [2021-06-05 22:40:08,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:40:08,473 INFO L93 Difference]: Finished difference Result 281393 states and 1303094 transitions. [2021-06-05 22:40:08,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 22:40:08,474 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 [2021-06-05 22:40:08,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:40:10,454 INFO L225 Difference]: With dead ends: 281393 [2021-06-05 22:40:10,454 INFO L226 Difference]: Without dead ends: 281393 [2021-06-05 22:40:10,455 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 57.8ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 22:40:12,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281393 states. [2021-06-05 22:40:18,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281393 to 185569. [2021-06-05 22:40:19,226 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) [2021-06-05 22:40:20,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185569 states to 185569 states and 861955 transitions. [2021-06-05 22:40:20,937 INFO L78 Accepts]: Start accepts. Automaton has 185569 states and 861955 transitions. Word has length 46 [2021-06-05 22:40:20,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:40:20,938 INFO L482 AbstractCegarLoop]: Abstraction has 185569 states and 861955 transitions. [2021-06-05 22:40:20,938 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) [2021-06-05 22:40:20,938 INFO L276 IsEmpty]: Start isEmpty. Operand 185569 states and 861955 transitions. [2021-06-05 22:40:21,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:40:21,538 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:40:21,538 INFO L554 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] [2021-06-05 22:40:21,538 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 22:40:21,538 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]=== [2021-06-05 22:40:21,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:40:21,538 INFO L82 PathProgramCache]: Analyzing trace with hash -516090004, now seen corresponding path program 7 times [2021-06-05 22:40:21,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:40:21,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312574606] [2021-06-05 22:40:21,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:40:21,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:40:21,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:40:21,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:40:21,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312574606] [2021-06-05 22:40:21,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312574606] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:40:21,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:40:21,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 22:40:21,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434052640] [2021-06-05 22:40:21,667 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 22:40:21,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:40:21,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 22:40:21,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-06-05 22:40:21,668 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) [2021-06-05 22:40:23,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:40:23,843 INFO L93 Difference]: Finished difference Result 292927 states and 1358658 transitions. [2021-06-05 22:40:23,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 22:40:23,844 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 [2021-06-05 22:40:23,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:40:25,498 INFO L225 Difference]: With dead ends: 292927 [2021-06-05 22:40:25,498 INFO L226 Difference]: Without dead ends: 196405 [2021-06-05 22:40:25,499 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.3ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-06-05 22:40:26,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196405 states. [2021-06-05 22:40:31,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196405 to 196405. [2021-06-05 22:40:31,424 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) [2021-06-05 22:40:33,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196405 states to 196405 states and 892676 transitions. [2021-06-05 22:40:33,193 INFO L78 Accepts]: Start accepts. Automaton has 196405 states and 892676 transitions. Word has length 46 [2021-06-05 22:40:33,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:40:33,194 INFO L482 AbstractCegarLoop]: Abstraction has 196405 states and 892676 transitions. [2021-06-05 22:40:33,194 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) [2021-06-05 22:40:33,194 INFO L276 IsEmpty]: Start isEmpty. Operand 196405 states and 892676 transitions. [2021-06-05 22:40:33,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:40:33,740 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:40:33,741 INFO L554 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] [2021-06-05 22:40:33,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 22:40:33,741 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]=== [2021-06-05 22:40:33,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:40:33,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1261406758, now seen corresponding path program 8 times [2021-06-05 22:40:33,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:40:33,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157756027] [2021-06-05 22:40:33,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:40:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:40:33,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:40:33,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:40:33,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157756027] [2021-06-05 22:40:33,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157756027] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:40:33,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:40:33,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:40:33,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758593941] [2021-06-05 22:40:33,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:40:33,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:40:33,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:40:33,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:40:33,797 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) [2021-06-05 22:40:36,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:40:36,984 INFO L93 Difference]: Finished difference Result 311447 states and 1399231 transitions. [2021-06-05 22:40:36,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 22:40:36,984 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 [2021-06-05 22:40:36,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:40:39,321 INFO L225 Difference]: With dead ends: 311447 [2021-06-05 22:40:39,324 INFO L226 Difference]: Without dead ends: 311255 [2021-06-05 22:40:39,325 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 29.6ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:40:41,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311255 states. [2021-06-05 22:40:49,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311255 to 207417. [2021-06-05 22:40:49,438 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) [2021-06-05 22:40:51,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207417 states to 207417 states and 938144 transitions. [2021-06-05 22:40:51,181 INFO L78 Accepts]: Start accepts. Automaton has 207417 states and 938144 transitions. Word has length 46 [2021-06-05 22:40:51,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:40:51,181 INFO L482 AbstractCegarLoop]: Abstraction has 207417 states and 938144 transitions. [2021-06-05 22:40:51,181 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) [2021-06-05 22:40:51,182 INFO L276 IsEmpty]: Start isEmpty. Operand 207417 states and 938144 transitions. [2021-06-05 22:40:51,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:40:51,750 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:40:51,750 INFO L554 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] [2021-06-05 22:40:51,750 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 22:40:51,750 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]=== [2021-06-05 22:40:51,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:40:51,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1916670854, now seen corresponding path program 9 times [2021-06-05 22:40:51,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:40:51,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994618718] [2021-06-05 22:40:51,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:40:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:40:51,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:40:51,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:40:51,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994618718] [2021-06-05 22:40:51,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994618718] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:40:51,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:40:51,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 22:40:51,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244865403] [2021-06-05 22:40:51,804 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 22:40:51,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:40:51,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 22:40:51,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:40:51,805 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) [2021-06-05 22:40:54,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:40:54,861 INFO L93 Difference]: Finished difference Result 334168 states and 1492333 transitions. [2021-06-05 22:40:54,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 22:40:54,863 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 [2021-06-05 22:40:54,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:40:57,003 INFO L225 Difference]: With dead ends: 334168 [2021-06-05 22:40:57,003 INFO L226 Difference]: Without dead ends: 333766 [2021-06-05 22:40:57,003 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 23.0ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:40:58,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333766 states. [2021-06-05 22:41:04,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333766 to 214179. [2021-06-05 22:41:04,777 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) [2021-06-05 22:41:06,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214179 states to 214179 states and 963164 transitions. [2021-06-05 22:41:06,688 INFO L78 Accepts]: Start accepts. Automaton has 214179 states and 963164 transitions. Word has length 46 [2021-06-05 22:41:06,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:41:06,689 INFO L482 AbstractCegarLoop]: Abstraction has 214179 states and 963164 transitions. [2021-06-05 22:41:06,689 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) [2021-06-05 22:41:06,689 INFO L276 IsEmpty]: Start isEmpty. Operand 214179 states and 963164 transitions. [2021-06-05 22:41:08,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:41:08,164 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:41:08,165 INFO L554 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] [2021-06-05 22:41:08,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 22:41:08,165 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]=== [2021-06-05 22:41:08,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:41:08,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1182515344, now seen corresponding path program 10 times [2021-06-05 22:41:08,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:41:08,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192417424] [2021-06-05 22:41:08,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:41:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:41:08,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:41:08,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:41:08,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192417424] [2021-06-05 22:41:08,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192417424] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:41:08,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:41:08,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:41:08,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243905384] [2021-06-05 22:41:08,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:41:08,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:41:08,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:41:08,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:41:08,242 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) [2021-06-05 22:41:11,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:41:11,527 INFO L93 Difference]: Finished difference Result 354188 states and 1551857 transitions. [2021-06-05 22:41:11,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 22:41:11,541 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 [2021-06-05 22:41:11,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:41:12,919 INFO L225 Difference]: With dead ends: 354188 [2021-06-05 22:41:12,919 INFO L226 Difference]: Without dead ends: 353624 [2021-06-05 22:41:12,920 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 22:41:14,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353624 states. [2021-06-05 22:41:21,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353624 to 224674. [2021-06-05 22:41:21,744 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) [2021-06-05 22:41:23,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224674 states to 224674 states and 996206 transitions. [2021-06-05 22:41:23,532 INFO L78 Accepts]: Start accepts. Automaton has 224674 states and 996206 transitions. Word has length 46 [2021-06-05 22:41:23,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:41:23,532 INFO L482 AbstractCegarLoop]: Abstraction has 224674 states and 996206 transitions. [2021-06-05 22:41:23,532 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) [2021-06-05 22:41:23,532 INFO L276 IsEmpty]: Start isEmpty. Operand 224674 states and 996206 transitions. [2021-06-05 22:41:24,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:41:24,124 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:41:24,124 INFO L554 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] [2021-06-05 22:41:24,124 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 22:41:24,124 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]=== [2021-06-05 22:41:24,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:41:24,125 INFO L82 PathProgramCache]: Analyzing trace with hash -137578290, now seen corresponding path program 11 times [2021-06-05 22:41:24,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:41:24,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566188523] [2021-06-05 22:41:24,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:41:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:41:24,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:41:24,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:41:24,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566188523] [2021-06-05 22:41:24,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566188523] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:41:24,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:41:24,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:41:24,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618412686] [2021-06-05 22:41:24,197 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:41:24,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:41:24,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:41:24,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:41:24,198 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) [2021-06-05 22:41:27,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:41:27,889 INFO L93 Difference]: Finished difference Result 313135 states and 1375062 transitions. [2021-06-05 22:41:27,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 22:41:27,889 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 [2021-06-05 22:41:27,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:41:29,764 INFO L225 Difference]: With dead ends: 313135 [2021-06-05 22:41:29,764 INFO L226 Difference]: Without dead ends: 313027 [2021-06-05 22:41:29,765 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 46.0ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:41:31,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313027 states. [2021-06-05 22:41:37,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313027 to 222693. [2021-06-05 22:41:38,290 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) [2021-06-05 22:41:40,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222693 states to 222693 states and 987269 transitions. [2021-06-05 22:41:40,119 INFO L78 Accepts]: Start accepts. Automaton has 222693 states and 987269 transitions. Word has length 46 [2021-06-05 22:41:40,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:41:40,119 INFO L482 AbstractCegarLoop]: Abstraction has 222693 states and 987269 transitions. [2021-06-05 22:41:40,119 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) [2021-06-05 22:41:40,119 INFO L276 IsEmpty]: Start isEmpty. Operand 222693 states and 987269 transitions. [2021-06-05 22:41:40,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:41:40,799 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:41:40,799 INFO L554 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] [2021-06-05 22:41:40,799 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 22:41:40,799 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]=== [2021-06-05 22:41:40,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:41:40,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1199161840, now seen corresponding path program 12 times [2021-06-05 22:41:40,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:41:40,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205572963] [2021-06-05 22:41:40,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:41:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:41:40,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:41:40,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:41:40,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205572963] [2021-06-05 22:41:40,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205572963] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:41:40,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:41:40,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 22:41:40,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226521292] [2021-06-05 22:41:40,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 22:41:40,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:41:40,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 22:41:40,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:41:40,871 INFO L87 Difference]: Start difference. First operand 222693 states and 987269 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) [2021-06-05 22:41:43,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:41:43,770 INFO L93 Difference]: Finished difference Result 317016 states and 1385687 transitions. [2021-06-05 22:41:43,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 22:41:43,771 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 [2021-06-05 22:41:43,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:41:44,933 INFO L225 Difference]: With dead ends: 317016 [2021-06-05 22:41:44,933 INFO L226 Difference]: Without dead ends: 316890 [2021-06-05 22:41:44,934 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 64.2ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-06-05 22:41:46,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316890 states. [2021-06-05 22:41:52,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316890 to 230772. [2021-06-05 22:41:53,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230772 states, 230771 states have (on average 4.403451906868714) internal successors, (1016189), 230771 states have internal predecessors, (1016189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:41:54,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230772 states to 230772 states and 1016189 transitions. [2021-06-05 22:41:54,861 INFO L78 Accepts]: Start accepts. Automaton has 230772 states and 1016189 transitions. Word has length 46 [2021-06-05 22:41:54,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:41:54,861 INFO L482 AbstractCegarLoop]: Abstraction has 230772 states and 1016189 transitions. [2021-06-05 22:41:54,862 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) [2021-06-05 22:41:54,862 INFO L276 IsEmpty]: Start isEmpty. Operand 230772 states and 1016189 transitions. [2021-06-05 22:41:55,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:41:55,507 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:41:55,507 INFO L554 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] [2021-06-05 22:41:55,507 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 22:41:55,507 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]=== [2021-06-05 22:41:55,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:41:55,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1431325544, now seen corresponding path program 13 times [2021-06-05 22:41:55,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:41:55,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135304511] [2021-06-05 22:41:55,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:41:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:41:55,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:41:55,542 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:41:55,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135304511] [2021-06-05 22:41:55,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135304511] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:41:55,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:41:55,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 22:41:55,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950719482] [2021-06-05 22:41:55,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 22:41:55,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:41:55,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 22:41:55,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 22:41:55,545 INFO L87 Difference]: Start difference. First operand 230772 states and 1016189 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) [2021-06-05 22:41:58,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:41:58,802 INFO L93 Difference]: Finished difference Result 408478 states and 1765876 transitions. [2021-06-05 22:41:58,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 22:41:58,803 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 [2021-06-05 22:41:58,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:42:01,167 INFO L225 Difference]: With dead ends: 408478 [2021-06-05 22:42:01,167 INFO L226 Difference]: Without dead ends: 407788 [2021-06-05 22:42:01,167 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.0ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:42:03,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407788 states. [2021-06-05 22:42:09,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407788 to 229608. [2021-06-05 22:42:10,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229608 states, 229607 states have (on average 4.399726489174982) internal successors, (1010208), 229607 states have internal predecessors, (1010208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:42:12,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229608 states to 229608 states and 1010208 transitions. [2021-06-05 22:42:12,389 INFO L78 Accepts]: Start accepts. Automaton has 229608 states and 1010208 transitions. Word has length 46 [2021-06-05 22:42:12,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:42:12,389 INFO L482 AbstractCegarLoop]: Abstraction has 229608 states and 1010208 transitions. [2021-06-05 22:42:12,389 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) [2021-06-05 22:42:12,389 INFO L276 IsEmpty]: Start isEmpty. Operand 229608 states and 1010208 transitions. [2021-06-05 22:42:13,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:42:13,567 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:42:13,567 INFO L554 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] [2021-06-05 22:42:13,567 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-05 22:42:13,567 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]=== [2021-06-05 22:42:13,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:42:13,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1564427950, now seen corresponding path program 14 times [2021-06-05 22:42:13,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:42:13,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719506023] [2021-06-05 22:42:13,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:42:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:42:13,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:42:13,665 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:42:13,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719506023] [2021-06-05 22:42:13,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719506023] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:42:13,665 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:42:13,665 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 22:42:13,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080825725] [2021-06-05 22:42:13,665 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 22:42:13,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:42:13,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 22:42:13,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 22:42:13,667 INFO L87 Difference]: Start difference. First operand 229608 states and 1010208 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) [2021-06-05 22:42:17,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:42:17,977 INFO L93 Difference]: Finished difference Result 402139 states and 1737491 transitions. [2021-06-05 22:42:17,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 22:42:17,978 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 [2021-06-05 22:42:17,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:42:21,495 INFO L225 Difference]: With dead ends: 402139 [2021-06-05 22:42:21,495 INFO L226 Difference]: Without dead ends: 401305 [2021-06-05 22:42:21,496 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 33.4ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:42:23,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401305 states. [2021-06-05 22:42:30,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401305 to 225477. [2021-06-05 22:42:30,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225477 states, 225476 states have (on average 4.391088186769323) internal successors, (990085), 225476 states have internal predecessors, (990085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:42:32,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225477 states to 225477 states and 990085 transitions. [2021-06-05 22:42:32,773 INFO L78 Accepts]: Start accepts. Automaton has 225477 states and 990085 transitions. Word has length 46 [2021-06-05 22:42:32,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:42:32,773 INFO L482 AbstractCegarLoop]: Abstraction has 225477 states and 990085 transitions. [2021-06-05 22:42:32,773 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) [2021-06-05 22:42:32,773 INFO L276 IsEmpty]: Start isEmpty. Operand 225477 states and 990085 transitions. [2021-06-05 22:42:34,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:42:34,263 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:42:34,263 INFO L554 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] [2021-06-05 22:42:34,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-05 22:42:34,264 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]=== [2021-06-05 22:42:34,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:42:34,264 INFO L82 PathProgramCache]: Analyzing trace with hash 136450120, now seen corresponding path program 15 times [2021-06-05 22:42:34,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:42:34,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257331671] [2021-06-05 22:42:34,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:42:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:42:34,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:42:34,301 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:42:34,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257331671] [2021-06-05 22:42:34,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257331671] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:42:34,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:42:34,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 22:42:34,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293169169] [2021-06-05 22:42:34,301 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 22:42:34,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:42:34,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 22:42:34,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 22:42:34,302 INFO L87 Difference]: Start difference. First operand 225477 states and 990085 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) [2021-06-05 22:42:37,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:42:37,216 INFO L93 Difference]: Finished difference Result 357749 states and 1533942 transitions. [2021-06-05 22:42:37,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 22:42:37,237 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 [2021-06-05 22:42:37,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:42:38,663 INFO L225 Difference]: With dead ends: 357749 [2021-06-05 22:42:38,663 INFO L226 Difference]: Without dead ends: 357005 [2021-06-05 22:42:38,664 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.1ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:42:40,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357005 states. [2021-06-05 22:42:46,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357005 to 221600. [2021-06-05 22:42:47,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221600 states, 221599 states have (on average 4.303606965735405) internal successors, (953675), 221599 states have internal predecessors, (953675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:42:49,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221600 states to 221600 states and 953675 transitions. [2021-06-05 22:42:49,221 INFO L78 Accepts]: Start accepts. Automaton has 221600 states and 953675 transitions. Word has length 46 [2021-06-05 22:42:49,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:42:49,222 INFO L482 AbstractCegarLoop]: Abstraction has 221600 states and 953675 transitions. [2021-06-05 22:42:49,222 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) [2021-06-05 22:42:49,222 INFO L276 IsEmpty]: Start isEmpty. Operand 221600 states and 953675 transitions. [2021-06-05 22:42:50,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:42:50,066 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:42:50,066 INFO L554 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] [2021-06-05 22:42:50,066 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-05 22:42:50,066 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]=== [2021-06-05 22:42:50,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:42:50,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1139991830, now seen corresponding path program 16 times [2021-06-05 22:42:50,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:42:50,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281962692] [2021-06-05 22:42:50,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:42:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:42:50,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:42:50,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:42:50,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281962692] [2021-06-05 22:42:50,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281962692] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:42:50,174 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:42:50,174 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 22:42:50,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327082188] [2021-06-05 22:42:50,174 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 22:42:50,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:42:50,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 22:42:50,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:42:50,175 INFO L87 Difference]: Start difference. First operand 221600 states and 953675 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) [2021-06-05 22:42:53,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:42:53,752 INFO L93 Difference]: Finished difference Result 336923 states and 1433090 transitions. [2021-06-05 22:42:53,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 22:42:53,752 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 [2021-06-05 22:42:53,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:42:56,842 INFO L225 Difference]: With dead ends: 336923 [2021-06-05 22:42:56,842 INFO L226 Difference]: Without dead ends: 336259 [2021-06-05 22:42:56,842 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 23.8ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:42:58,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336259 states. [2021-06-05 22:43:04,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336259 to 215864. [2021-06-05 22:43:05,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215864 states, 215863 states have (on average 4.294571093702951) internal successors, (927039), 215863 states have internal predecessors, (927039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:43:06,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215864 states to 215864 states and 927039 transitions. [2021-06-05 22:43:06,978 INFO L78 Accepts]: Start accepts. Automaton has 215864 states and 927039 transitions. Word has length 46 [2021-06-05 22:43:06,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:43:06,978 INFO L482 AbstractCegarLoop]: Abstraction has 215864 states and 927039 transitions. [2021-06-05 22:43:06,978 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) [2021-06-05 22:43:06,978 INFO L276 IsEmpty]: Start isEmpty. Operand 215864 states and 927039 transitions. [2021-06-05 22:43:07,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:43:07,535 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:43:07,535 INFO L554 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] [2021-06-05 22:43:07,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-05 22:43:07,535 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]=== [2021-06-05 22:43:07,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:43:07,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1171918840, now seen corresponding path program 17 times [2021-06-05 22:43:07,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:43:07,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711039] [2021-06-05 22:43:07,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:43:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:43:07,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:43:07,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:43:07,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711039] [2021-06-05 22:43:07,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711039] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:43:07,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:43:07,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:43:07,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240762785] [2021-06-05 22:43:07,587 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:43:07,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:43:07,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:43:07,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:43:07,588 INFO L87 Difference]: Start difference. First operand 215864 states and 927039 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) [2021-06-05 22:43:10,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:43:10,467 INFO L93 Difference]: Finished difference Result 327305 states and 1358680 transitions. [2021-06-05 22:43:10,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 22:43:10,467 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 [2021-06-05 22:43:10,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:43:11,594 INFO L225 Difference]: With dead ends: 327305 [2021-06-05 22:43:11,594 INFO L226 Difference]: Without dead ends: 325001 [2021-06-05 22:43:11,594 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 37.0ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 22:43:13,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325001 states. [2021-06-05 22:43:18,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325001 to 215028. [2021-06-05 22:43:19,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215028 states, 215027 states have (on average 4.179335618317699) internal successors, (898670), 215027 states have internal predecessors, (898670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:43:20,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215028 states to 215028 states and 898670 transitions. [2021-06-05 22:43:20,940 INFO L78 Accepts]: Start accepts. Automaton has 215028 states and 898670 transitions. Word has length 46 [2021-06-05 22:43:20,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:43:20,940 INFO L482 AbstractCegarLoop]: Abstraction has 215028 states and 898670 transitions. [2021-06-05 22:43:20,940 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) [2021-06-05 22:43:20,940 INFO L276 IsEmpty]: Start isEmpty. Operand 215028 states and 898670 transitions. [2021-06-05 22:43:22,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:43:22,061 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:43:22,061 INFO L554 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] [2021-06-05 22:43:22,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-05 22:43:22,061 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]=== [2021-06-05 22:43:22,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:43:22,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1000072394, now seen corresponding path program 18 times [2021-06-05 22:43:22,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:43:22,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896700775] [2021-06-05 22:43:22,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:43:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:43:22,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:43:22,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:43:22,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896700775] [2021-06-05 22:43:22,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896700775] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:43:22,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:43:22,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 22:43:22,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601713567] [2021-06-05 22:43:22,177 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 22:43:22,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:43:22,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 22:43:22,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:43:22,178 INFO L87 Difference]: Start difference. First operand 215028 states and 898670 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) [2021-06-05 22:43:24,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:43:24,998 INFO L93 Difference]: Finished difference Result 312942 states and 1290511 transitions. [2021-06-05 22:43:24,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 22:43:24,999 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 [2021-06-05 22:43:24,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:43:27,614 INFO L225 Difference]: With dead ends: 312942 [2021-06-05 22:43:27,614 INFO L226 Difference]: Without dead ends: 312086 [2021-06-05 22:43:27,615 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 58.2ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:43:28,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312086 states. [2021-06-05 22:43:35,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312086 to 211604. [2021-06-05 22:43:35,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211604 states, 211603 states have (on average 4.1543976219618814) internal successors, (879083), 211603 states have internal predecessors, (879083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:43:37,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211604 states to 211604 states and 879083 transitions. [2021-06-05 22:43:37,164 INFO L78 Accepts]: Start accepts. Automaton has 211604 states and 879083 transitions. Word has length 46 [2021-06-05 22:43:37,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:43:37,164 INFO L482 AbstractCegarLoop]: Abstraction has 211604 states and 879083 transitions. [2021-06-05 22:43:37,164 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) [2021-06-05 22:43:37,164 INFO L276 IsEmpty]: Start isEmpty. Operand 211604 states and 879083 transitions. [2021-06-05 22:43:37,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:43:37,748 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:43:37,748 INFO L554 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] [2021-06-05 22:43:37,748 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-05 22:43:37,748 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]=== [2021-06-05 22:43:37,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:43:37,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1790180840, now seen corresponding path program 19 times [2021-06-05 22:43:37,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:43:37,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937923081] [2021-06-05 22:43:37,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:43:37,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:43:37,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:43:37,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:43:37,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937923081] [2021-06-05 22:43:37,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937923081] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:43:37,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:43:37,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:43:37,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551608022] [2021-06-05 22:43:37,791 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:43:37,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:43:37,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:43:37,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:43:37,792 INFO L87 Difference]: Start difference. First operand 211604 states and 879083 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) [2021-06-05 22:43:39,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:43:39,959 INFO L93 Difference]: Finished difference Result 310712 states and 1247858 transitions. [2021-06-05 22:43:39,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 22:43:39,960 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 [2021-06-05 22:43:39,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:43:41,605 INFO L225 Difference]: With dead ends: 310712 [2021-06-05 22:43:41,606 INFO L226 Difference]: Without dead ends: 308214 [2021-06-05 22:43:41,606 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 40.2ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 22:43:42,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308214 states. [2021-06-05 22:43:48,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308214 to 203045. [2021-06-05 22:43:48,524 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) [2021-06-05 22:43:50,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203045 states to 203045 states and 825566 transitions. [2021-06-05 22:43:50,233 INFO L78 Accepts]: Start accepts. Automaton has 203045 states and 825566 transitions. Word has length 46 [2021-06-05 22:43:50,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:43:50,233 INFO L482 AbstractCegarLoop]: Abstraction has 203045 states and 825566 transitions. [2021-06-05 22:43:50,233 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) [2021-06-05 22:43:50,233 INFO L276 IsEmpty]: Start isEmpty. Operand 203045 states and 825566 transitions. [2021-06-05 22:43:50,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:43:50,795 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:43:50,795 INFO L554 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] [2021-06-05 22:43:50,795 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-05 22:43:50,795 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]=== [2021-06-05 22:43:50,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:43:50,795 INFO L82 PathProgramCache]: Analyzing trace with hash 709518024, now seen corresponding path program 20 times [2021-06-05 22:43:50,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:43:50,795 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871185453] [2021-06-05 22:43:50,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:43:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:43:50,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:43:50,840 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:43:50,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871185453] [2021-06-05 22:43:50,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871185453] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:43:50,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:43:50,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:43:50,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27901899] [2021-06-05 22:43:50,840 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:43:50,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:43:50,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:43:50,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:43:50,841 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) [2021-06-05 22:43:52,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:43:52,838 INFO L93 Difference]: Finished difference Result 288060 states and 1146724 transitions. [2021-06-05 22:43:52,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 22:43:52,839 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 [2021-06-05 22:43:52,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:43:54,358 INFO L225 Difference]: With dead ends: 288060 [2021-06-05 22:43:54,358 INFO L226 Difference]: Without dead ends: 284768 [2021-06-05 22:43:54,358 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 36.8ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 22:43:55,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284768 states. [2021-06-05 22:43:59,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284768 to 191781. [2021-06-05 22:43:59,882 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) [2021-06-05 22:44:01,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191781 states to 191781 states and 773147 transitions. [2021-06-05 22:44:01,980 INFO L78 Accepts]: Start accepts. Automaton has 191781 states and 773147 transitions. Word has length 46 [2021-06-05 22:44:01,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:44:01,980 INFO L482 AbstractCegarLoop]: Abstraction has 191781 states and 773147 transitions. [2021-06-05 22:44:01,980 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) [2021-06-05 22:44:01,980 INFO L276 IsEmpty]: Start isEmpty. Operand 191781 states and 773147 transitions. [2021-06-05 22:44:02,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:44:02,577 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:44:02,577 INFO L554 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] [2021-06-05 22:44:02,577 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-05 22:44:02,577 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]=== [2021-06-05 22:44:02,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:44:02,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1639152820, now seen corresponding path program 21 times [2021-06-05 22:44:02,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:44:02,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378254226] [2021-06-05 22:44:02,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:44:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:44:02,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:44:02,677 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:44:02,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378254226] [2021-06-05 22:44:02,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378254226] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:44:02,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:44:02,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:44:02,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117368392] [2021-06-05 22:44:02,678 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:44:02,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:44:02,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:44:02,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:44:02,678 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) [2021-06-05 22:44:05,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:44:05,783 INFO L93 Difference]: Finished difference Result 289421 states and 1160347 transitions. [2021-06-05 22:44:05,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 22:44:05,783 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 [2021-06-05 22:44:05,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:44:07,435 INFO L225 Difference]: With dead ends: 289421 [2021-06-05 22:44:07,435 INFO L226 Difference]: Without dead ends: 289101 [2021-06-05 22:44:07,435 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:44:09,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289101 states. [2021-06-05 22:44:15,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289101 to 192581. [2021-06-05 22:44:15,395 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) [2021-06-05 22:44:16,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192581 states to 192581 states and 775899 transitions. [2021-06-05 22:44:16,942 INFO L78 Accepts]: Start accepts. Automaton has 192581 states and 775899 transitions. Word has length 46 [2021-06-05 22:44:16,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:44:16,942 INFO L482 AbstractCegarLoop]: Abstraction has 192581 states and 775899 transitions. [2021-06-05 22:44:16,942 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) [2021-06-05 22:44:16,942 INFO L276 IsEmpty]: Start isEmpty. Operand 192581 states and 775899 transitions. [2021-06-05 22:44:17,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:44:17,475 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:44:17,475 INFO L554 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] [2021-06-05 22:44:17,475 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-05 22:44:17,475 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]=== [2021-06-05 22:44:17,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:44:17,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1671079830, now seen corresponding path program 22 times [2021-06-05 22:44:17,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:44:17,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002533967] [2021-06-05 22:44:17,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:44:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:44:17,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:44:17,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:44:17,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002533967] [2021-06-05 22:44:17,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002533967] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:44:17,524 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:44:17,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:44:17,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299235426] [2021-06-05 22:44:17,524 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:44:17,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:44:17,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:44:17,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:44:17,526 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) [2021-06-05 22:44:19,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:44:19,873 INFO L93 Difference]: Finished difference Result 289605 states and 1158403 transitions. [2021-06-05 22:44:19,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 22:44:19,874 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 [2021-06-05 22:44:19,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:44:21,461 INFO L225 Difference]: With dead ends: 289605 [2021-06-05 22:44:21,461 INFO L226 Difference]: Without dead ends: 287589 [2021-06-05 22:44:21,461 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 43.5ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 22:44:22,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287589 states. [2021-06-05 22:44:26,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287589 to 190411. [2021-06-05 22:44:27,120 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) [2021-06-05 22:44:28,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190411 states to 190411 states and 765344 transitions. [2021-06-05 22:44:28,644 INFO L78 Accepts]: Start accepts. Automaton has 190411 states and 765344 transitions. Word has length 46 [2021-06-05 22:44:28,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:44:28,644 INFO L482 AbstractCegarLoop]: Abstraction has 190411 states and 765344 transitions. [2021-06-05 22:44:28,644 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) [2021-06-05 22:44:28,644 INFO L276 IsEmpty]: Start isEmpty. Operand 190411 states and 765344 transitions. [2021-06-05 22:44:29,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:44:29,083 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:44:29,083 INFO L554 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] [2021-06-05 22:44:29,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-05 22:44:29,083 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]=== [2021-06-05 22:44:29,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:44:29,084 INFO L82 PathProgramCache]: Analyzing trace with hash -300064282, now seen corresponding path program 23 times [2021-06-05 22:44:29,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:44:29,084 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725201841] [2021-06-05 22:44:29,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:44:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:44:29,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:44:29,139 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:44:29,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725201841] [2021-06-05 22:44:29,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725201841] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:44:29,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:44:29,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 22:44:29,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713655707] [2021-06-05 22:44:29,140 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 22:44:29,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:44:29,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 22:44:29,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:44:29,141 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) [2021-06-05 22:44:31,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:44:31,998 INFO L93 Difference]: Finished difference Result 295333 states and 1175576 transitions. [2021-06-05 22:44:31,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 22:44:31,998 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 [2021-06-05 22:44:31,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:44:32,957 INFO L225 Difference]: With dead ends: 295333 [2021-06-05 22:44:32,957 INFO L226 Difference]: Without dead ends: 289109 [2021-06-05 22:44:32,958 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 68.8ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:44:34,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289109 states. [2021-06-05 22:44:39,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289109 to 197773. [2021-06-05 22:44:39,406 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) [2021-06-05 22:44:41,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197773 states to 197773 states and 787466 transitions. [2021-06-05 22:44:41,347 INFO L78 Accepts]: Start accepts. Automaton has 197773 states and 787466 transitions. Word has length 46 [2021-06-05 22:44:41,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:44:41,348 INFO L482 AbstractCegarLoop]: Abstraction has 197773 states and 787466 transitions. [2021-06-05 22:44:41,348 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) [2021-06-05 22:44:41,348 INFO L276 IsEmpty]: Start isEmpty. Operand 197773 states and 787466 transitions. [2021-06-05 22:44:42,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:44:42,263 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:44:42,263 INFO L554 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] [2021-06-05 22:44:42,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-05 22:44:42,263 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]=== [2021-06-05 22:44:42,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:44:42,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1536830164, now seen corresponding path program 24 times [2021-06-05 22:44:42,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:44:42,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771663218] [2021-06-05 22:44:42,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:44:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:44:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:44:42,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:44:42,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771663218] [2021-06-05 22:44:42,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771663218] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:44:42,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:44:42,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:44:42,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946100705] [2021-06-05 22:44:42,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:44:42,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:44:42,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:44:42,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:44:42,359 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) [2021-06-05 22:44:45,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:44:45,079 INFO L93 Difference]: Finished difference Result 299086 states and 1182852 transitions. [2021-06-05 22:44:45,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 22:44:45,080 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 [2021-06-05 22:44:45,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:44:47,128 INFO L225 Difference]: With dead ends: 299086 [2021-06-05 22:44:47,128 INFO L226 Difference]: Without dead ends: 298566 [2021-06-05 22:44:47,128 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 34.8ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:44:48,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298566 states. [2021-06-05 22:44:54,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298566 to 198823. [2021-06-05 22:44:54,422 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) [2021-06-05 22:44:55,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198823 states to 198823 states and 791816 transitions. [2021-06-05 22:44:55,958 INFO L78 Accepts]: Start accepts. Automaton has 198823 states and 791816 transitions. Word has length 46 [2021-06-05 22:44:55,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:44:55,958 INFO L482 AbstractCegarLoop]: Abstraction has 198823 states and 791816 transitions. [2021-06-05 22:44:55,958 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) [2021-06-05 22:44:55,958 INFO L276 IsEmpty]: Start isEmpty. Operand 198823 states and 791816 transitions. [2021-06-05 22:44:56,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:44:56,410 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:44:56,410 INFO L554 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] [2021-06-05 22:44:56,411 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-05 22:44:56,411 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]=== [2021-06-05 22:44:56,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:44:56,411 INFO L82 PathProgramCache]: Analyzing trace with hash -746721718, now seen corresponding path program 25 times [2021-06-05 22:44:56,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:44:56,411 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866786451] [2021-06-05 22:44:56,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:44:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:44:57,258 WARN L205 SmtUtils]: Spent 808.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2021-06-05 22:44:57,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:44:57,266 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:44:57,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866786451] [2021-06-05 22:44:57,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866786451] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:44:57,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:44:57,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:44:57,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361290312] [2021-06-05 22:44:57,267 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:44:57,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:44:57,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:44:57,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:44:57,268 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) [2021-06-05 22:44:59,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:44:59,311 INFO L93 Difference]: Finished difference Result 294761 states and 1162068 transitions. [2021-06-05 22:44:59,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 22:44:59,311 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 [2021-06-05 22:44:59,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:45:00,271 INFO L225 Difference]: With dead ends: 294761 [2021-06-05 22:45:00,272 INFO L226 Difference]: Without dead ends: 292673 [2021-06-05 22:45:00,272 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 855.2ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 22:45:01,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292673 states. [2021-06-05 22:45:06,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292673 to 193969. [2021-06-05 22:45:06,687 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) [2021-06-05 22:45:08,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193969 states to 193969 states and 771292 transitions. [2021-06-05 22:45:08,363 INFO L78 Accepts]: Start accepts. Automaton has 193969 states and 771292 transitions. Word has length 46 [2021-06-05 22:45:08,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:45:08,363 INFO L482 AbstractCegarLoop]: Abstraction has 193969 states and 771292 transitions. [2021-06-05 22:45:08,363 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) [2021-06-05 22:45:08,363 INFO L276 IsEmpty]: Start isEmpty. Operand 193969 states and 771292 transitions. [2021-06-05 22:45:08,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:45:08,841 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:45:08,841 INFO L554 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] [2021-06-05 22:45:08,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-05 22:45:08,841 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]=== [2021-06-05 22:45:08,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:45:08,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1798406086, now seen corresponding path program 26 times [2021-06-05 22:45:08,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:45:08,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76292848] [2021-06-05 22:45:08,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:45:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:45:08,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:45:08,902 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:45:08,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76292848] [2021-06-05 22:45:08,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76292848] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:45:08,902 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:45:08,902 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 22:45:08,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840438652] [2021-06-05 22:45:08,903 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 22:45:08,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:45:08,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 22:45:08,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:45:08,904 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) [2021-06-05 22:45:11,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:45:11,806 INFO L93 Difference]: Finished difference Result 293030 states and 1142523 transitions. [2021-06-05 22:45:11,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 22:45:11,806 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 [2021-06-05 22:45:11,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:45:12,933 INFO L225 Difference]: With dead ends: 293030 [2021-06-05 22:45:12,933 INFO L226 Difference]: Without dead ends: 291722 [2021-06-05 22:45:12,933 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 76.6ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:45:13,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291722 states. [2021-06-05 22:45:19,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291722 to 200246. [2021-06-05 22:45:20,478 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) [2021-06-05 22:45:21,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200246 states to 200246 states and 784649 transitions. [2021-06-05 22:45:21,675 INFO L78 Accepts]: Start accepts. Automaton has 200246 states and 784649 transitions. Word has length 46 [2021-06-05 22:45:21,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:45:21,675 INFO L482 AbstractCegarLoop]: Abstraction has 200246 states and 784649 transitions. [2021-06-05 22:45:21,675 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) [2021-06-05 22:45:21,675 INFO L276 IsEmpty]: Start isEmpty. Operand 200246 states and 784649 transitions. [2021-06-05 22:45:23,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:45:23,054 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:45:23,054 INFO L554 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] [2021-06-05 22:45:23,054 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-05 22:45:23,054 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]=== [2021-06-05 22:45:23,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:45:23,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1370272520, now seen corresponding path program 27 times [2021-06-05 22:45:23,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:45:23,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970836616] [2021-06-05 22:45:23,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:45:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:45:23,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:45:23,110 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:45:23,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970836616] [2021-06-05 22:45:23,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970836616] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:45:23,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:45:23,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:45:23,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627197639] [2021-06-05 22:45:23,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:45:23,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:45:23,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:45:23,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:45:23,112 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) [2021-06-05 22:45:25,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:45:25,842 INFO L93 Difference]: Finished difference Result 293831 states and 1136141 transitions. [2021-06-05 22:45:25,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 22:45:25,842 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 [2021-06-05 22:45:25,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:45:27,393 INFO L225 Difference]: With dead ends: 293831 [2021-06-05 22:45:27,393 INFO L226 Difference]: Without dead ends: 290963 [2021-06-05 22:45:27,393 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 46.1ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 22:45:29,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290963 states. [2021-06-05 22:45:33,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290963 to 193515. [2021-06-05 22:45:33,786 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) [2021-06-05 22:45:35,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193515 states to 193515 states and 755781 transitions. [2021-06-05 22:45:35,356 INFO L78 Accepts]: Start accepts. Automaton has 193515 states and 755781 transitions. Word has length 46 [2021-06-05 22:45:35,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:45:35,356 INFO L482 AbstractCegarLoop]: Abstraction has 193515 states and 755781 transitions. [2021-06-05 22:45:35,356 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) [2021-06-05 22:45:35,356 INFO L276 IsEmpty]: Start isEmpty. Operand 193515 states and 755781 transitions. [2021-06-05 22:45:35,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:45:35,819 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:45:35,819 INFO L554 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] [2021-06-05 22:45:35,819 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-05 22:45:35,820 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:45:35,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:45:35,820 INFO L82 PathProgramCache]: Analyzing trace with hash 2029550822, now seen corresponding path program 28 times [2021-06-05 22:45:35,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:45:35,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520814575] [2021-06-05 22:45:35,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:45:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:45:35,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:45:35,872 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:45:35,872 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520814575] [2021-06-05 22:45:35,872 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520814575] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:45:35,872 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:45:35,872 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 22:45:35,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213989425] [2021-06-05 22:45:35,873 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 22:45:35,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:45:35,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 22:45:35,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:45:35,873 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) [2021-06-05 22:45:38,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:45:38,158 INFO L93 Difference]: Finished difference Result 283290 states and 1078797 transitions. [2021-06-05 22:45:38,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 22:45:38,159 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 [2021-06-05 22:45:38,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:45:39,637 INFO L225 Difference]: With dead ends: 283290 [2021-06-05 22:45:39,637 INFO L226 Difference]: Without dead ends: 280266 [2021-06-05 22:45:39,637 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 74.0ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:45:40,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280266 states. [2021-06-05 22:45:44,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280266 to 193510. [2021-06-05 22:45:45,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193510 states, 193509 states have (on average 3.849350676195939) internal successors, (744884), 193509 states have internal predecessors, (744884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:45:46,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193510 states to 193510 states and 744884 transitions. [2021-06-05 22:45:46,660 INFO L78 Accepts]: Start accepts. Automaton has 193510 states and 744884 transitions. Word has length 46 [2021-06-05 22:45:46,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:45:46,660 INFO L482 AbstractCegarLoop]: Abstraction has 193510 states and 744884 transitions. [2021-06-05 22:45:46,660 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) [2021-06-05 22:45:46,660 INFO L276 IsEmpty]: Start isEmpty. Operand 193510 states and 744884 transitions. [2021-06-05 22:45:47,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:45:47,092 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:45:47,092 INFO L554 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] [2021-06-05 22:45:47,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-05 22:45:47,092 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:45:47,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:45:47,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1260957358, now seen corresponding path program 29 times [2021-06-05 22:45:47,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:45:47,092 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043733009] [2021-06-05 22:45:47,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:45:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:45:47,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:45:47,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:45:47,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043733009] [2021-06-05 22:45:47,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043733009] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:45:47,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:45:47,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 22:45:47,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235724065] [2021-06-05 22:45:47,156 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 22:45:47,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:45:47,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 22:45:47,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:45:47,156 INFO L87 Difference]: Start difference. First operand 193510 states and 744884 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) [2021-06-05 22:45:49,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:45:49,958 INFO L93 Difference]: Finished difference Result 270531 states and 1004554 transitions. [2021-06-05 22:45:49,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 22:45:49,959 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 [2021-06-05 22:45:49,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:45:50,884 INFO L225 Difference]: With dead ends: 270531 [2021-06-05 22:45:50,884 INFO L226 Difference]: Without dead ends: 262632 [2021-06-05 22:45:50,884 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 84.9ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:45:51,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262632 states. [2021-06-05 22:45:55,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262632 to 177887. [2021-06-05 22:45:55,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177887 states, 177886 states have (on average 3.7640623770279844) internal successors, (669574), 177886 states have internal predecessors, (669574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:45:57,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177887 states to 177887 states and 669574 transitions. [2021-06-05 22:45:57,802 INFO L78 Accepts]: Start accepts. Automaton has 177887 states and 669574 transitions. Word has length 46 [2021-06-05 22:45:57,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:45:57,802 INFO L482 AbstractCegarLoop]: Abstraction has 177887 states and 669574 transitions. [2021-06-05 22:45:57,803 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) [2021-06-05 22:45:57,803 INFO L276 IsEmpty]: Start isEmpty. Operand 177887 states and 669574 transitions. [2021-06-05 22:45:58,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:45:58,366 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:45:58,366 INFO L554 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] [2021-06-05 22:45:58,366 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-05 22:45:58,366 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:45:58,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:45:58,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1334758820, now seen corresponding path program 30 times [2021-06-05 22:45:58,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:45:58,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828290832] [2021-06-05 22:45:58,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:45:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:45:58,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:45:58,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:45:58,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828290832] [2021-06-05 22:45:58,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828290832] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:45:58,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:45:58,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:45:58,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581805546] [2021-06-05 22:45:58,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:45:58,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:45:58,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:45:58,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:45:58,439 INFO L87 Difference]: Start difference. First operand 177887 states and 669574 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) [2021-06-05 22:46:00,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:46:00,609 INFO L93 Difference]: Finished difference Result 248384 states and 919697 transitions. [2021-06-05 22:46:00,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 22:46:00,609 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 [2021-06-05 22:46:00,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:46:01,743 INFO L225 Difference]: With dead ends: 248384 [2021-06-05 22:46:01,743 INFO L226 Difference]: Without dead ends: 248064 [2021-06-05 22:46:01,744 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 45.0ms TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-06-05 22:46:03,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248064 states. [2021-06-05 22:46:07,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248064 to 177855. [2021-06-05 22:46:08,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177855 states, 177854 states have (on average 3.7614110450144502) internal successors, (668982), 177854 states have internal predecessors, (668982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:46:08,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177855 states to 177855 states and 668982 transitions. [2021-06-05 22:46:08,831 INFO L78 Accepts]: Start accepts. Automaton has 177855 states and 668982 transitions. Word has length 46 [2021-06-05 22:46:08,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:46:08,831 INFO L482 AbstractCegarLoop]: Abstraction has 177855 states and 668982 transitions. [2021-06-05 22:46:08,831 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) [2021-06-05 22:46:08,831 INFO L276 IsEmpty]: Start isEmpty. Operand 177855 states and 668982 transitions. [2021-06-05 22:46:09,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:46:09,224 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:46:09,224 INFO L554 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] [2021-06-05 22:46:09,225 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-05 22:46:09,225 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:46:09,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:46:09,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1029432924, now seen corresponding path program 31 times [2021-06-05 22:46:09,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:46:09,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377503402] [2021-06-05 22:46:09,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:46:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:46:09,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:46:09,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:46:09,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377503402] [2021-06-05 22:46:09,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377503402] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:46:09,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:46:09,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 22:46:09,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148610182] [2021-06-05 22:46:09,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 22:46:09,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:46:09,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 22:46:09,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:46:09,278 INFO L87 Difference]: Start difference. First operand 177855 states and 668982 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) [2021-06-05 22:46:11,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:46:11,934 INFO L93 Difference]: Finished difference Result 251976 states and 930539 transitions. [2021-06-05 22:46:11,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 22:46:11,949 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 [2021-06-05 22:46:11,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:46:12,825 INFO L225 Difference]: With dead ends: 251976 [2021-06-05 22:46:12,825 INFO L226 Difference]: Without dead ends: 249960 [2021-06-05 22:46:12,826 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 71.1ms TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-06-05 22:46:13,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249960 states. [2021-06-05 22:46:17,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249960 to 176831. [2021-06-05 22:46:18,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176831 states, 176830 states have (on average 3.750076344511678) internal successors, (663126), 176830 states have internal predecessors, (663126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:46:19,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176831 states to 176831 states and 663126 transitions. [2021-06-05 22:46:19,469 INFO L78 Accepts]: Start accepts. Automaton has 176831 states and 663126 transitions. Word has length 46 [2021-06-05 22:46:19,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:46:19,469 INFO L482 AbstractCegarLoop]: Abstraction has 176831 states and 663126 transitions. [2021-06-05 22:46:19,469 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) [2021-06-05 22:46:19,470 INFO L276 IsEmpty]: Start isEmpty. Operand 176831 states and 663126 transitions. [2021-06-05 22:46:19,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:46:19,893 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:46:19,893 INFO L554 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] [2021-06-05 22:46:19,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-05 22:46:19,894 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:46:19,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:46:19,894 INFO L82 PathProgramCache]: Analyzing trace with hash -75273820, now seen corresponding path program 32 times [2021-06-05 22:46:19,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:46:19,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257967034] [2021-06-05 22:46:19,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:46:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:46:19,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:46:19,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:46:19,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257967034] [2021-06-05 22:46:19,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257967034] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:46:19,947 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:46:19,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 22:46:19,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921167453] [2021-06-05 22:46:19,948 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 22:46:19,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:46:19,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 22:46:19,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-06-05 22:46:19,948 INFO L87 Difference]: Start difference. First operand 176831 states and 663126 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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) [2021-06-05 22:46:22,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:46:22,029 INFO L93 Difference]: Finished difference Result 243984 states and 901479 transitions. [2021-06-05 22:46:22,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 22:46:22,029 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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 [2021-06-05 22:46:22,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:46:22,676 INFO L225 Difference]: With dead ends: 243984 [2021-06-05 22:46:22,676 INFO L226 Difference]: Without dead ends: 237760 [2021-06-05 22:46:22,676 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 72.1ms TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:46:23,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237760 states. [2021-06-05 22:46:27,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237760 to 173831. [2021-06-05 22:46:27,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173831 states, 173830 states have (on average 3.735304607950296) internal successors, (649308), 173830 states have internal predecessors, (649308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:46:28,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173831 states to 173831 states and 649308 transitions. [2021-06-05 22:46:28,772 INFO L78 Accepts]: Start accepts. Automaton has 173831 states and 649308 transitions. Word has length 46 [2021-06-05 22:46:28,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:46:28,772 INFO L482 AbstractCegarLoop]: Abstraction has 173831 states and 649308 transitions. [2021-06-05 22:46:28,773 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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) [2021-06-05 22:46:28,773 INFO L276 IsEmpty]: Start isEmpty. Operand 173831 states and 649308 transitions. [2021-06-05 22:46:29,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:46:29,169 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:46:29,169 INFO L554 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] [2021-06-05 22:46:29,169 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-05 22:46:29,169 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:46:29,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:46:29,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1508962954, now seen corresponding path program 33 times [2021-06-05 22:46:29,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:46:29,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010033404] [2021-06-05 22:46:29,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:46:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:46:29,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:46:29,233 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:46:29,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010033404] [2021-06-05 22:46:29,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010033404] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:46:29,233 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:46:29,233 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-05 22:46:29,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431459082] [2021-06-05 22:46:29,233 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 22:46:29,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:46:29,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 22:46:29,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 22:46:29,234 INFO L87 Difference]: Start difference. First operand 173831 states and 649308 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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) [2021-06-05 22:46:31,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:46:31,509 INFO L93 Difference]: Finished difference Result 243411 states and 895074 transitions. [2021-06-05 22:46:31,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 22:46:31,510 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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 [2021-06-05 22:46:31,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:46:33,092 INFO L225 Difference]: With dead ends: 243411 [2021-06-05 22:46:33,092 INFO L226 Difference]: Without dead ends: 233779 [2021-06-05 22:46:33,095 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 119.3ms TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2021-06-05 22:46:34,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233779 states. [2021-06-05 22:46:38,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233779 to 176360. [2021-06-05 22:46:39,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176360 states, 176359 states have (on average 3.7175307185910555) internal successors, (655620), 176359 states have internal predecessors, (655620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:46:39,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176360 states to 176360 states and 655620 transitions. [2021-06-05 22:46:39,968 INFO L78 Accepts]: Start accepts. Automaton has 176360 states and 655620 transitions. Word has length 46 [2021-06-05 22:46:39,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:46:39,968 INFO L482 AbstractCegarLoop]: Abstraction has 176360 states and 655620 transitions. [2021-06-05 22:46:39,968 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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) [2021-06-05 22:46:39,968 INFO L276 IsEmpty]: Start isEmpty. Operand 176360 states and 655620 transitions. [2021-06-05 22:46:40,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:46:40,350 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:46:40,350 INFO L554 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] [2021-06-05 22:46:40,351 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-05 22:46:40,351 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:46:40,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:46:40,351 INFO L82 PathProgramCache]: Analyzing trace with hash 61777796, now seen corresponding path program 34 times [2021-06-05 22:46:40,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:46:40,351 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703681936] [2021-06-05 22:46:40,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:46:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:46:40,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:46:40,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:46:40,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703681936] [2021-06-05 22:46:40,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703681936] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:46:40,394 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:46:40,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:46:40,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042635479] [2021-06-05 22:46:40,394 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:46:40,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:46:40,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:46:40,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:46:40,395 INFO L87 Difference]: Start difference. First operand 176360 states and 655620 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) [2021-06-05 22:46:42,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:46:42,912 INFO L93 Difference]: Finished difference Result 252502 states and 922596 transitions. [2021-06-05 22:46:42,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 22:46:42,921 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 [2021-06-05 22:46:42,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:46:43,870 INFO L225 Difference]: With dead ends: 252502 [2021-06-05 22:46:43,870 INFO L226 Difference]: Without dead ends: 252270 [2021-06-05 22:46:43,870 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 40.5ms TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-06-05 22:46:44,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252270 states. [2021-06-05 22:46:48,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252270 to 176292. [2021-06-05 22:46:49,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176292 states, 176291 states have (on average 3.7161511364732176) internal successors, (655124), 176291 states have internal predecessors, (655124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:46:50,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176292 states to 176292 states and 655124 transitions. [2021-06-05 22:46:50,582 INFO L78 Accepts]: Start accepts. Automaton has 176292 states and 655124 transitions. Word has length 46 [2021-06-05 22:46:50,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:46:50,582 INFO L482 AbstractCegarLoop]: Abstraction has 176292 states and 655124 transitions. [2021-06-05 22:46:50,582 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) [2021-06-05 22:46:50,582 INFO L276 IsEmpty]: Start isEmpty. Operand 176292 states and 655124 transitions. [2021-06-05 22:46:51,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:46:51,118 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:46:51,118 INFO L554 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] [2021-06-05 22:46:51,118 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-05 22:46:51,118 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:46:51,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:46:51,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1480378492, now seen corresponding path program 35 times [2021-06-05 22:46:51,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:46:51,119 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093816481] [2021-06-05 22:46:51,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:46:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:46:51,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:46:51,165 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:46:51,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093816481] [2021-06-05 22:46:51,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093816481] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:46:51,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:46:51,165 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 22:46:51,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470111395] [2021-06-05 22:46:51,166 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 22:46:51,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:46:51,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 22:46:51,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:46:51,166 INFO L87 Difference]: Start difference. First operand 176292 states and 655124 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) [2021-06-05 22:46:53,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:46:53,212 INFO L93 Difference]: Finished difference Result 256485 states and 935781 transitions. [2021-06-05 22:46:53,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 22:46:53,213 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 [2021-06-05 22:46:53,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:46:53,901 INFO L225 Difference]: With dead ends: 256485 [2021-06-05 22:46:53,901 INFO L226 Difference]: Without dead ends: 255477 [2021-06-05 22:46:53,901 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 58.1ms TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-06-05 22:46:55,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255477 states. [2021-06-05 22:46:58,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255477 to 174951. [2021-06-05 22:46:58,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174951 states, 174950 states have (on average 3.708448128036582) internal successors, (648793), 174950 states have internal predecessors, (648793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:47:00,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174951 states to 174951 states and 648793 transitions. [2021-06-05 22:47:00,239 INFO L78 Accepts]: Start accepts. Automaton has 174951 states and 648793 transitions. Word has length 46 [2021-06-05 22:47:00,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:47:00,239 INFO L482 AbstractCegarLoop]: Abstraction has 174951 states and 648793 transitions. [2021-06-05 22:47:00,239 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) [2021-06-05 22:47:00,239 INFO L276 IsEmpty]: Start isEmpty. Operand 174951 states and 648793 transitions. [2021-06-05 22:47:00,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:47:00,640 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:47:00,640 INFO L554 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] [2021-06-05 22:47:00,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-05 22:47:00,640 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:47:00,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:47:00,640 INFO L82 PathProgramCache]: Analyzing trace with hash 647892868, now seen corresponding path program 36 times [2021-06-05 22:47:00,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:47:00,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7775534] [2021-06-05 22:47:00,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:47:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:47:00,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:47:00,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:47:00,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7775534] [2021-06-05 22:47:00,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7775534] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:47:00,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:47:00,696 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 22:47:00,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229219516] [2021-06-05 22:47:00,696 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 22:47:00,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:47:00,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 22:47:00,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-06-05 22:47:00,696 INFO L87 Difference]: Start difference. First operand 174951 states and 648793 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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) [2021-06-05 22:47:02,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:47:02,759 INFO L93 Difference]: Finished difference Result 244216 states and 893757 transitions. [2021-06-05 22:47:02,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 22:47:02,760 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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 [2021-06-05 22:47:02,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:47:03,981 INFO L225 Difference]: With dead ends: 244216 [2021-06-05 22:47:03,982 INFO L226 Difference]: Without dead ends: 241900 [2021-06-05 22:47:03,982 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 73.0ms TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:47:04,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241900 states. [2021-06-05 22:47:08,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241900 to 172803. [2021-06-05 22:47:09,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172803 states, 172802 states have (on average 3.7055358155576905) internal successors, (640324), 172802 states have internal predecessors, (640324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:47:09,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172803 states to 172803 states and 640324 transitions. [2021-06-05 22:47:09,662 INFO L78 Accepts]: Start accepts. Automaton has 172803 states and 640324 transitions. Word has length 46 [2021-06-05 22:47:09,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:47:09,662 INFO L482 AbstractCegarLoop]: Abstraction has 172803 states and 640324 transitions. [2021-06-05 22:47:09,662 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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) [2021-06-05 22:47:09,662 INFO L276 IsEmpty]: Start isEmpty. Operand 172803 states and 640324 transitions. [2021-06-05 22:47:10,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:47:10,040 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:47:10,040 INFO L554 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] [2021-06-05 22:47:10,040 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-05 22:47:10,040 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:47:10,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:47:10,040 INFO L82 PathProgramCache]: Analyzing trace with hash -771547030, now seen corresponding path program 37 times [2021-06-05 22:47:10,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:47:10,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179955978] [2021-06-05 22:47:10,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:47:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:47:10,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:47:10,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:47:10,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179955978] [2021-06-05 22:47:10,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179955978] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:47:10,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:47:10,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-05 22:47:10,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424558101] [2021-06-05 22:47:10,110 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 22:47:10,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:47:10,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 22:47:10,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 22:47:10,111 INFO L87 Difference]: Start difference. First operand 172803 states and 640324 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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) [2021-06-05 22:47:12,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:47:12,929 INFO L93 Difference]: Finished difference Result 246288 states and 898984 transitions. [2021-06-05 22:47:12,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 22:47:12,942 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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 [2021-06-05 22:47:12,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:47:13,761 INFO L225 Difference]: With dead ends: 246288 [2021-06-05 22:47:13,761 INFO L226 Difference]: Without dead ends: 244180 [2021-06-05 22:47:13,761 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 122.3ms TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2021-06-05 22:47:14,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244180 states. [2021-06-05 22:47:19,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244180 to 178415. [2021-06-05 22:47:19,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178415 states, 178414 states have (on average 3.689693633907653) internal successors, (658293), 178414 states have internal predecessors, (658293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:47:20,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178415 states to 178415 states and 658293 transitions. [2021-06-05 22:47:20,644 INFO L78 Accepts]: Start accepts. Automaton has 178415 states and 658293 transitions. Word has length 46 [2021-06-05 22:47:20,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:47:20,644 INFO L482 AbstractCegarLoop]: Abstraction has 178415 states and 658293 transitions. [2021-06-05 22:47:20,644 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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) [2021-06-05 22:47:20,644 INFO L276 IsEmpty]: Start isEmpty. Operand 178415 states and 658293 transitions. [2021-06-05 22:47:21,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:47:21,941 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:47:21,941 INFO L554 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] [2021-06-05 22:47:21,942 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-05 22:47:21,942 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:47:21,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:47:21,969 INFO L82 PathProgramCache]: Analyzing trace with hash -268062650, now seen corresponding path program 38 times [2021-06-05 22:47:21,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:47:21,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636720808] [2021-06-05 22:47:21,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:47:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:47:22,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:47:22,088 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:47:22,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636720808] [2021-06-05 22:47:22,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636720808] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:47:22,089 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:47:22,089 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-05 22:47:22,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837222457] [2021-06-05 22:47:22,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 22:47:22,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:47:22,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 22:47:22,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 22:47:22,090 INFO L87 Difference]: Start difference. First operand 178415 states and 658293 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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) [2021-06-05 22:47:24,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:47:24,893 INFO L93 Difference]: Finished difference Result 264778 states and 956726 transitions. [2021-06-05 22:47:24,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 22:47:24,893 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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 [2021-06-05 22:47:24,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:47:25,914 INFO L225 Difference]: With dead ends: 264778 [2021-06-05 22:47:25,915 INFO L226 Difference]: Without dead ends: 255788 [2021-06-05 22:47:25,915 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 159.3ms TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2021-06-05 22:47:27,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255788 states. [2021-06-05 22:47:30,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255788 to 170344. [2021-06-05 22:47:30,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170344 states, 170343 states have (on average 3.651931690765103) internal successors, (622081), 170343 states have internal predecessors, (622081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:47:32,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170344 states to 170344 states and 622081 transitions. [2021-06-05 22:47:32,121 INFO L78 Accepts]: Start accepts. Automaton has 170344 states and 622081 transitions. Word has length 46 [2021-06-05 22:47:32,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:47:32,121 INFO L482 AbstractCegarLoop]: Abstraction has 170344 states and 622081 transitions. [2021-06-05 22:47:32,121 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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) [2021-06-05 22:47:32,121 INFO L276 IsEmpty]: Start isEmpty. Operand 170344 states and 622081 transitions. [2021-06-05 22:47:32,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:47:32,533 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:47:32,533 INFO L554 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] [2021-06-05 22:47:32,534 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-05 22:47:32,534 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:47:32,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:47:32,534 INFO L82 PathProgramCache]: Analyzing trace with hash 2109582830, now seen corresponding path program 39 times [2021-06-05 22:47:32,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:47:32,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372906580] [2021-06-05 22:47:32,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:47:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:47:32,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:47:32,594 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:47:32,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372906580] [2021-06-05 22:47:32,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372906580] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:47:32,594 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:47:32,594 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-05 22:47:32,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889703895] [2021-06-05 22:47:32,594 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 22:47:32,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:47:32,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 22:47:32,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 22:47:32,594 INFO L87 Difference]: Start difference. First operand 170344 states and 622081 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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) [2021-06-05 22:47:34,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:47:34,876 INFO L93 Difference]: Finished difference Result 259177 states and 926835 transitions. [2021-06-05 22:47:34,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 22:47:34,877 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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 [2021-06-05 22:47:34,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:47:36,114 INFO L225 Difference]: With dead ends: 259177 [2021-06-05 22:47:36,115 INFO L226 Difference]: Without dead ends: 250948 [2021-06-05 22:47:36,115 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 102.6ms TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2021-06-05 22:47:36,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250948 states. [2021-06-05 22:47:40,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250948 to 163203. [2021-06-05 22:47:40,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163203 states, 163202 states have (on average 3.632841509295229) internal successors, (592887), 163202 states have internal predecessors, (592887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:47:41,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163203 states to 163203 states and 592887 transitions. [2021-06-05 22:47:41,589 INFO L78 Accepts]: Start accepts. Automaton has 163203 states and 592887 transitions. Word has length 46 [2021-06-05 22:47:41,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:47:41,589 INFO L482 AbstractCegarLoop]: Abstraction has 163203 states and 592887 transitions. [2021-06-05 22:47:41,589 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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) [2021-06-05 22:47:41,589 INFO L276 IsEmpty]: Start isEmpty. Operand 163203 states and 592887 transitions. [2021-06-05 22:47:41,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:47:41,953 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:47:41,953 INFO L554 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] [2021-06-05 22:47:41,953 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-05 22:47:41,953 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:47:41,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:47:41,954 INFO L82 PathProgramCache]: Analyzing trace with hash 877862332, now seen corresponding path program 40 times [2021-06-05 22:47:41,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:47:41,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181703500] [2021-06-05 22:47:41,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:47:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:47:41,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:47:41,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:47:41,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181703500] [2021-06-05 22:47:41,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181703500] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:47:41,988 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:47:41,988 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:47:41,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39101072] [2021-06-05 22:47:41,988 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:47:41,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:47:41,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:47:41,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:47:41,989 INFO L87 Difference]: Start difference. First operand 163203 states and 592887 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) [2021-06-05 22:47:43,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:47:43,938 INFO L93 Difference]: Finished difference Result 261836 states and 927885 transitions. [2021-06-05 22:47:43,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 22:47:43,939 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 [2021-06-05 22:47:43,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:47:45,182 INFO L225 Difference]: With dead ends: 261836 [2021-06-05 22:47:45,183 INFO L226 Difference]: Without dead ends: 258726 [2021-06-05 22:47:45,183 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 33.8ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 22:47:45,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258726 states. [2021-06-05 22:47:48,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258726 to 149085. [2021-06-05 22:47:49,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149085 states, 149084 states have (on average 3.572361889941241) internal successors, (532582), 149084 states have internal predecessors, (532582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:47:50,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149085 states to 149085 states and 532582 transitions. [2021-06-05 22:47:50,298 INFO L78 Accepts]: Start accepts. Automaton has 149085 states and 532582 transitions. Word has length 46 [2021-06-05 22:47:50,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:47:50,298 INFO L482 AbstractCegarLoop]: Abstraction has 149085 states and 532582 transitions. [2021-06-05 22:47:50,298 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) [2021-06-05 22:47:50,298 INFO L276 IsEmpty]: Start isEmpty. Operand 149085 states and 532582 transitions. [2021-06-05 22:47:50,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:47:50,704 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:47:50,704 INFO L554 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] [2021-06-05 22:47:50,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-05 22:47:50,704 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:47:50,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:47:50,704 INFO L82 PathProgramCache]: Analyzing trace with hash 371477210, now seen corresponding path program 41 times [2021-06-05 22:47:50,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:47:50,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892706390] [2021-06-05 22:47:50,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:47:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:47:50,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:47:50,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:47:50,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892706390] [2021-06-05 22:47:50,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892706390] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:47:50,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:47:50,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 22:47:50,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300624023] [2021-06-05 22:47:50,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 22:47:50,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:47:50,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 22:47:50,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:47:50,750 INFO L87 Difference]: Start difference. First operand 149085 states and 532582 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) [2021-06-05 22:47:52,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:47:52,701 INFO L93 Difference]: Finished difference Result 223326 states and 751109 transitions. [2021-06-05 22:47:52,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 22:47:52,702 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 [2021-06-05 22:47:52,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:47:53,225 INFO L225 Difference]: With dead ends: 223326 [2021-06-05 22:47:53,225 INFO L226 Difference]: Without dead ends: 212581 [2021-06-05 22:47:53,225 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 60.8ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:47:53,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212581 states. [2021-06-05 22:47:56,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212581 to 131099. [2021-06-05 22:47:56,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131099 states, 131098 states have (on average 3.4141787060061937) internal successors, (447592), 131098 states have internal predecessors, (447592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:47:57,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131099 states to 131099 states and 447592 transitions. [2021-06-05 22:47:57,663 INFO L78 Accepts]: Start accepts. Automaton has 131099 states and 447592 transitions. Word has length 46 [2021-06-05 22:47:57,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:47:57,663 INFO L482 AbstractCegarLoop]: Abstraction has 131099 states and 447592 transitions. [2021-06-05 22:47:57,663 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) [2021-06-05 22:47:57,663 INFO L276 IsEmpty]: Start isEmpty. Operand 131099 states and 447592 transitions. [2021-06-05 22:47:58,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-05 22:47:58,060 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:47:58,060 INFO L554 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] [2021-06-05 22:47:58,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-05 22:47:58,060 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:47:58,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:47:58,060 INFO L82 PathProgramCache]: Analyzing trace with hash 132428666, now seen corresponding path program 42 times [2021-06-05 22:47:58,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:47:58,060 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137668155] [2021-06-05 22:47:58,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:47:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:47:58,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:47:58,131 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:47:58,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137668155] [2021-06-05 22:47:58,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137668155] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:47:58,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:47:58,132 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 22:47:58,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362748738] [2021-06-05 22:47:58,132 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 22:47:58,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:47:58,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 22:47:58,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-06-05 22:47:58,132 INFO L87 Difference]: Start difference. First operand 131099 states and 447592 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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) Received shutdown request... [2021-06-05 22:47:58,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 22:47:58,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-05 22:47:58,996 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 22:47:58,998 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 22:47:58,999 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 22:47:58,999 INFO L202 PluginConnector]: Adding new model ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 10:47:58 BasicIcfg [2021-06-05 22:47:58,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 22:47:58,999 INFO L168 Benchmark]: Toolchain (without parser) took 555022.51 ms. Allocated memory was 352.3 MB in the beginning and 16.0 GB in the end (delta: 15.6 GB). Free memory was 332.4 MB in the beginning and 8.1 GB in the end (delta: -7.8 GB). Peak memory consumption was 7.8 GB. Max. memory is 16.0 GB. [2021-06-05 22:47:59,000 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 352.3 MB. Free memory is still 333.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 22:47:59,000 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.00 ms. Allocated memory is still 352.3 MB. Free memory was 332.4 MB in the beginning and 331.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 22:47:59,000 INFO L168 Benchmark]: Boogie Preprocessor took 12.21 ms. Allocated memory is still 352.3 MB. Free memory was 331.0 MB in the beginning and 329.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 22:47:59,000 INFO L168 Benchmark]: RCFGBuilder took 312.27 ms. Allocated memory is still 352.3 MB. Free memory was 329.9 MB in the beginning and 313.4 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-06-05 22:47:59,000 INFO L168 Benchmark]: TraceAbstraction took 554643.89 ms. Allocated memory was 352.3 MB in the beginning and 16.0 GB in the end (delta: 15.6 GB). Free memory was 312.9 MB in the beginning and 8.1 GB in the end (delta: -7.8 GB). Peak memory consumption was 7.8 GB. Max. memory is 16.0 GB. [2021-06-05 22:47:59,000 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 0.12 ms. Allocated memory is still 352.3 MB. Free memory is still 333.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.00 ms. Allocated memory is still 352.3 MB. Free memory was 332.4 MB in the beginning and 331.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.21 ms. Allocated memory is still 352.3 MB. Free memory was 331.0 MB in the beginning and 329.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 312.27 ms. Allocated memory is still 352.3 MB. Free memory was 329.9 MB in the beginning and 313.4 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 554643.89 ms. Allocated memory was 352.3 MB in the beginning and 16.0 GB in the end (delta: 15.6 GB). Free memory was 312.9 MB in the beginning and 8.1 GB in the end (delta: -7.8 GB). Peak memory consumption was 7.8 GB. Max. memory is 16.0 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 BasicCegarLoop was constructing difference of abstraction (131099states) and FLOYD_HOARE automaton (currently 14 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (151215 states constructedinput type IntersectNwa). - 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: 554516.5ms, OverallIterations: 42, TraceHistogramMax: 1, EmptinessCheckTime: 27515.0ms, AutomataDifference: 172838.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17873.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4573 SDtfs, 7378 SDslu, 16711 SDs, 0 SdLazy, 16801 SolverSat, 2897 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11482.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 601 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 441 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 3126.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=230772occurred in iteration=12, InterpolantAutomatonStates: 428, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 332245.3ms AutomataMinimizationTime, 41 MinimizatonAttempts, 3881242 StatesRemovedByMinimization, 40 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 116.7ms SsaConstructionTime, 381.5ms SatisfiabilityAnalysisTime, 3228.2ms InterpolantComputationTime, 1932 NumberOfCodeBlocks, 1932 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 1890 ConstructedInterpolants, 0 QuantifiedInterpolants, 5662 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 42 InterpolantComputations, 42 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