/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-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 15:09:02,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 15:09:02,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 15:09:02,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 15:09:02,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 15:09:02,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 15:09:02,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 15:09:02,224 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-Separate.epf [2021-06-05 15:09:02,243 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 15:09:02,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 15:09:02,243 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 15:09:02,244 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 15:09:02,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 15:09:02,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 15:09:02,245 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 15:09:02,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 15:09:02,246 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 15:09:02,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 15:09:02,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 15:09:02,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 15:09:02,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 15:09:02,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 15:09:02,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 15:09:02,247 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 15:09:02,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 15:09:02,247 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 15:09:02,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 15:09:02,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 15:09:02,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 15:09:02,248 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 15:09:02,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 15:09:02,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 15:09:02,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 15:09:02,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 15:09:02,250 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 15:09:02,250 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 15:09:02,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 15:09:02,250 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 15:09:02,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 15:09:02,251 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 15:09:02,251 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 15:09:02,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 15:09:02,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 15:09:02,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 15:09:02,551 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 15:09:02,552 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 15:09:02,553 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl [2021-06-05 15:09:02,553 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl' [2021-06-05 15:09:02,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 15:09:02,586 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 15:09:02,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 15:09:02,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 15:09:02,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 15:09:02,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:09:02" (1/1) ... [2021-06-05 15:09:02,610 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:09:02" (1/1) ... [2021-06-05 15:09:02,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 15:09:02,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 15:09:02,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 15:09:02,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 15:09:02,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:09:02" (1/1) ... [2021-06-05 15:09:02,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:09:02" (1/1) ... [2021-06-05 15:09:02,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:09:02" (1/1) ... [2021-06-05 15:09:02,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:09:02" (1/1) ... [2021-06-05 15:09:02,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:09:02" (1/1) ... [2021-06-05 15:09:02,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:09:02" (1/1) ... [2021-06-05 15:09:02,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:09:02" (1/1) ... [2021-06-05 15:09:02,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 15:09:02,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 15:09:02,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 15:09:02,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 15:09:02,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:09:02" (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 15:09:02,693 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 15:09:02,693 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 15:09:02,693 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 15:09:02,693 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 15:09:02,693 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 15:09:02,693 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 15:09:02,694 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 15:09:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 15:09:02,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 15:09:02,694 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 15:09:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 15:09:02,694 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 15:09:02,694 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-05 15:09:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-05 15:09:02,694 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-05 15:09:02,694 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-06-05 15:09:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-06-05 15:09:02,695 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-06-05 15:09:02,695 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 15:09:02,877 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 15:09:02,878 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 15:09:02,879 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 03:09:02 BoogieIcfgContainer [2021-06-05 15:09:02,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 15:09:02,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 15:09:02,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 15:09:02,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 15:09:02,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:09:02" (1/2) ... [2021-06-05 15:09:02,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f26710 and model type ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 03:09:02, skipping insertion in model container [2021-06-05 15:09:02,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 03:09:02" (2/2) ... [2021-06-05 15:09:02,886 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-5.wvr.bpl [2021-06-05 15:09:02,891 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 15:09:02,891 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 15:09:02,891 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 15:09:02,892 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 15:09:02,952 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-06-05 15:09:02,969 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-06-05 15:09:02,985 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 15:09:02,986 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 15:09:02,986 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 15:09:02,986 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 15:09:02,986 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 15:09:02,986 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 15:09:02,986 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 15:09:02,986 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 15:09:02,995 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 46 transitions, 132 flow [2021-06-05 15:09:04,384 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 12446 states, 12444 states have (on average 4.187078109932497) internal successors, (52104), 12445 states have internal predecessors, (52104), 0 states have call successors, (0), 0 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 15:09:04,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 12446 states, 12444 states have (on average 4.187078109932497) internal successors, (52104), 12445 states have internal predecessors, (52104), 0 states have call successors, (0), 0 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 15:09:04,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:04,569 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:04,570 INFO L521 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] [2021-06-05 15:09:04,571 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:04,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:04,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1270525438, now seen corresponding path program 1 times [2021-06-05 15:09:04,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:04,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285897367] [2021-06-05 15:09:04,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:04,809 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 15:09:04,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:04,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285897367] [2021-06-05 15:09:04,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285897367] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:04,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:04,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 15:09:04,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146437822] [2021-06-05 15:09:04,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 15:09:04,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:04,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 15:09:04,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 15:09:04,859 INFO L87 Difference]: Start difference. First operand has 12446 states, 12444 states have (on average 4.187078109932497) internal successors, (52104), 12445 states have internal predecessors, (52104), 0 states have call successors, (0), 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 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:05,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:05,211 INFO L93 Difference]: Finished difference Result 12865 states and 53759 transitions. [2021-06-05 15:09:05,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 15:09:05,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:05,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:05,377 INFO L225 Difference]: With dead ends: 12865 [2021-06-05 15:09:05,377 INFO L226 Difference]: Without dead ends: 12865 [2021-06-05 15:09:05,380 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 15:09:05,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12865 states. [2021-06-05 15:09:06,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12865 to 12865. [2021-06-05 15:09:06,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12865 states, 12864 states have (on average 4.179026741293533) internal successors, (53759), 12864 states have internal predecessors, (53759), 0 states have call successors, (0), 0 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 15:09:06,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12865 states to 12865 states and 53759 transitions. [2021-06-05 15:09:06,174 INFO L78 Accepts]: Start accepts. Automaton has 12865 states and 53759 transitions. Word has length 39 [2021-06-05 15:09:06,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:06,175 INFO L482 AbstractCegarLoop]: Abstraction has 12865 states and 53759 transitions. [2021-06-05 15:09:06,175 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:06,175 INFO L276 IsEmpty]: Start isEmpty. Operand 12865 states and 53759 transitions. [2021-06-05 15:09:06,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:06,333 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:06,337 INFO L521 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] [2021-06-05 15:09:06,339 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 15:09:06,339 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:06,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:06,342 INFO L82 PathProgramCache]: Analyzing trace with hash -944687490, now seen corresponding path program 2 times [2021-06-05 15:09:06,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:06,343 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955008046] [2021-06-05 15:09:06,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:06,441 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 15:09:06,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:06,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955008046] [2021-06-05 15:09:06,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955008046] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:06,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:06,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 15:09:06,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563894641] [2021-06-05 15:09:06,444 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 15:09:06,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:06,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 15:09:06,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 15:09:06,448 INFO L87 Difference]: Start difference. First operand 12865 states and 53759 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:06,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:06,940 INFO L93 Difference]: Finished difference Result 32685 states and 135133 transitions. [2021-06-05 15:09:06,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 15:09:06,941 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:06,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:07,231 INFO L225 Difference]: With dead ends: 32685 [2021-06-05 15:09:07,231 INFO L226 Difference]: Without dead ends: 32685 [2021-06-05 15:09:07,233 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.3ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 15:09:07,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32685 states. [2021-06-05 15:09:08,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32685 to 16006. [2021-06-05 15:09:08,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16006 states, 16005 states have (on average 4.138831615120275) internal successors, (66242), 16005 states have internal predecessors, (66242), 0 states have call successors, (0), 0 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 15:09:08,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16006 states to 16006 states and 66242 transitions. [2021-06-05 15:09:08,147 INFO L78 Accepts]: Start accepts. Automaton has 16006 states and 66242 transitions. Word has length 39 [2021-06-05 15:09:08,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:08,147 INFO L482 AbstractCegarLoop]: Abstraction has 16006 states and 66242 transitions. [2021-06-05 15:09:08,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:08,148 INFO L276 IsEmpty]: Start isEmpty. Operand 16006 states and 66242 transitions. [2021-06-05 15:09:08,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:08,189 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:08,189 INFO L521 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] [2021-06-05 15:09:08,189 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 15:09:08,190 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:08,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:08,190 INFO L82 PathProgramCache]: Analyzing trace with hash -696461990, now seen corresponding path program 3 times [2021-06-05 15:09:08,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:08,191 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217391660] [2021-06-05 15:09:08,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:08,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:09:08,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:08,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217391660] [2021-06-05 15:09:08,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217391660] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:08,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:08,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 15:09:08,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469356313] [2021-06-05 15:09:08,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 15:09:08,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:08,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 15:09:08,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-05 15:09:08,245 INFO L87 Difference]: Start difference. First operand 16006 states and 66242 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:08,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:08,951 INFO L93 Difference]: Finished difference Result 34910 states and 143500 transitions. [2021-06-05 15:09:08,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 15:09:08,952 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:08,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:09,192 INFO L225 Difference]: With dead ends: 34910 [2021-06-05 15:09:09,193 INFO L226 Difference]: Without dead ends: 34910 [2021-06-05 15:09:09,193 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 24.6ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 15:09:09,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34910 states. [2021-06-05 15:09:09,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34910 to 17906. [2021-06-05 15:09:10,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17906 states, 17905 states have (on average 4.128399888299358) internal successors, (73919), 17905 states have internal predecessors, (73919), 0 states have call successors, (0), 0 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 15:09:10,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17906 states to 17906 states and 73919 transitions. [2021-06-05 15:09:10,286 INFO L78 Accepts]: Start accepts. Automaton has 17906 states and 73919 transitions. Word has length 39 [2021-06-05 15:09:10,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:10,287 INFO L482 AbstractCegarLoop]: Abstraction has 17906 states and 73919 transitions. [2021-06-05 15:09:10,287 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:10,287 INFO L276 IsEmpty]: Start isEmpty. Operand 17906 states and 73919 transitions. [2021-06-05 15:09:10,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:10,364 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:10,364 INFO L521 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] [2021-06-05 15:09:10,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 15:09:10,365 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:10,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:10,366 INFO L82 PathProgramCache]: Analyzing trace with hash 942509060, now seen corresponding path program 4 times [2021-06-05 15:09:10,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:10,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119716623] [2021-06-05 15:09:10,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:10,463 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 15:09:10,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:10,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119716623] [2021-06-05 15:09:10,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119716623] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:10,465 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:10,465 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 15:09:10,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912542852] [2021-06-05 15:09:10,465 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 15:09:10,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:10,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 15:09:10,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 15:09:10,467 INFO L87 Difference]: Start difference. First operand 17906 states and 73919 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:10,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:10,835 INFO L93 Difference]: Finished difference Result 31098 states and 127412 transitions. [2021-06-05 15:09:10,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 15:09:10,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:10,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:11,128 INFO L225 Difference]: With dead ends: 31098 [2021-06-05 15:09:11,129 INFO L226 Difference]: Without dead ends: 31098 [2021-06-05 15:09:11,129 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 33.6ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-06-05 15:09:11,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31098 states. [2021-06-05 15:09:11,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31098 to 18162. [2021-06-05 15:09:11,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18162 states, 18161 states have (on average 4.116017840427289) internal successors, (74751), 18161 states have internal predecessors, (74751), 0 states have call successors, (0), 0 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 15:09:11,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18162 states to 18162 states and 74751 transitions. [2021-06-05 15:09:11,845 INFO L78 Accepts]: Start accepts. Automaton has 18162 states and 74751 transitions. Word has length 39 [2021-06-05 15:09:11,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:11,845 INFO L482 AbstractCegarLoop]: Abstraction has 18162 states and 74751 transitions. [2021-06-05 15:09:11,845 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:11,845 INFO L276 IsEmpty]: Start isEmpty. Operand 18162 states and 74751 transitions. [2021-06-05 15:09:11,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:11,880 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:11,880 INFO L521 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] [2021-06-05 15:09:11,880 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 15:09:11,880 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:11,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:11,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1835727168, now seen corresponding path program 5 times [2021-06-05 15:09:11,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:11,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997097127] [2021-06-05 15:09:11,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:11,947 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 15:09:11,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:11,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997097127] [2021-06-05 15:09:11,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997097127] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:11,947 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:11,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 15:09:11,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650485906] [2021-06-05 15:09:11,948 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 15:09:11,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:11,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 15:09:11,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-05 15:09:11,949 INFO L87 Difference]: Start difference. First operand 18162 states and 74751 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:12,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:12,418 INFO L93 Difference]: Finished difference Result 36912 states and 149288 transitions. [2021-06-05 15:09:12,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 15:09:12,419 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:12,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:12,517 INFO L225 Difference]: With dead ends: 36912 [2021-06-05 15:09:12,518 INFO L226 Difference]: Without dead ends: 36912 [2021-06-05 15:09:12,518 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 58.8ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-06-05 15:09:12,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36912 states. [2021-06-05 15:09:13,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36912 to 20620. [2021-06-05 15:09:13,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20620 states, 20619 states have (on average 4.04350356467336) internal successors, (83373), 20619 states have internal predecessors, (83373), 0 states have call successors, (0), 0 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 15:09:13,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20620 states to 20620 states and 83373 transitions. [2021-06-05 15:09:13,370 INFO L78 Accepts]: Start accepts. Automaton has 20620 states and 83373 transitions. Word has length 39 [2021-06-05 15:09:13,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:13,371 INFO L482 AbstractCegarLoop]: Abstraction has 20620 states and 83373 transitions. [2021-06-05 15:09:13,371 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:13,371 INFO L276 IsEmpty]: Start isEmpty. Operand 20620 states and 83373 transitions. [2021-06-05 15:09:13,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:13,404 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:13,404 INFO L521 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] [2021-06-05 15:09:13,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 15:09:13,405 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:13,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:13,405 INFO L82 PathProgramCache]: Analyzing trace with hash -518665604, now seen corresponding path program 6 times [2021-06-05 15:09:13,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:13,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097586089] [2021-06-05 15:09:13,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:13,467 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 15:09:13,467 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:13,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097586089] [2021-06-05 15:09:13,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097586089] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:13,467 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:13,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 15:09:13,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807731153] [2021-06-05 15:09:13,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 15:09:13,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:13,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 15:09:13,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-05 15:09:13,469 INFO L87 Difference]: Start difference. First operand 20620 states and 83373 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:14,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:14,179 INFO L93 Difference]: Finished difference Result 40027 states and 158784 transitions. [2021-06-05 15:09:14,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 15:09:14,179 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:14,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:14,275 INFO L225 Difference]: With dead ends: 40027 [2021-06-05 15:09:14,275 INFO L226 Difference]: Without dead ends: 40027 [2021-06-05 15:09:14,276 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 76.3ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-06-05 15:09:14,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40027 states. [2021-06-05 15:09:14,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40027 to 23077. [2021-06-05 15:09:15,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23077 states, 23076 states have (on average 3.9587016814005893) internal successors, (91351), 23076 states have internal predecessors, (91351), 0 states have call successors, (0), 0 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 15:09:15,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23077 states to 23077 states and 91351 transitions. [2021-06-05 15:09:15,061 INFO L78 Accepts]: Start accepts. Automaton has 23077 states and 91351 transitions. Word has length 39 [2021-06-05 15:09:15,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:15,061 INFO L482 AbstractCegarLoop]: Abstraction has 23077 states and 91351 transitions. [2021-06-05 15:09:15,061 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:15,061 INFO L276 IsEmpty]: Start isEmpty. Operand 23077 states and 91351 transitions. [2021-06-05 15:09:15,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:15,105 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:15,105 INFO L521 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] [2021-06-05 15:09:15,105 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 15:09:15,105 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:15,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:15,106 INFO L82 PathProgramCache]: Analyzing trace with hash -942887360, now seen corresponding path program 7 times [2021-06-05 15:09:15,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:15,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940346254] [2021-06-05 15:09:15,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:15,381 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 15:09:15,381 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:15,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940346254] [2021-06-05 15:09:15,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940346254] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:15,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:15,382 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 15:09:15,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531001747] [2021-06-05 15:09:15,382 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 15:09:15,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:15,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 15:09:15,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 15:09:15,383 INFO L87 Difference]: Start difference. First operand 23077 states and 91351 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:15,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:15,641 INFO L93 Difference]: Finished difference Result 35393 states and 139274 transitions. [2021-06-05 15:09:15,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 15:09:15,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:15,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:15,760 INFO L225 Difference]: With dead ends: 35393 [2021-06-05 15:09:15,760 INFO L226 Difference]: Without dead ends: 23425 [2021-06-05 15:09:15,760 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.8ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-05 15:09:15,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23425 states. [2021-06-05 15:09:16,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23425 to 23425. [2021-06-05 15:09:16,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23425 states, 23424 states have (on average 3.8121584699453552) internal successors, (89296), 23424 states have internal predecessors, (89296), 0 states have call successors, (0), 0 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 15:09:16,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23425 states to 23425 states and 89296 transitions. [2021-06-05 15:09:16,450 INFO L78 Accepts]: Start accepts. Automaton has 23425 states and 89296 transitions. Word has length 39 [2021-06-05 15:09:16,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:16,450 INFO L482 AbstractCegarLoop]: Abstraction has 23425 states and 89296 transitions. [2021-06-05 15:09:16,451 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:16,451 INFO L276 IsEmpty]: Start isEmpty. Operand 23425 states and 89296 transitions. [2021-06-05 15:09:16,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:16,492 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:16,492 INFO L521 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] [2021-06-05 15:09:16,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 15:09:16,492 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:16,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:16,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1452946602, now seen corresponding path program 8 times [2021-06-05 15:09:16,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:16,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755844873] [2021-06-05 15:09:16,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:16,544 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 15:09:16,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:16,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755844873] [2021-06-05 15:09:16,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755844873] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:16,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:16,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 15:09:16,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016340154] [2021-06-05 15:09:16,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 15:09:16,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:16,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 15:09:16,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-05 15:09:16,547 INFO L87 Difference]: Start difference. First operand 23425 states and 89296 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:17,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:17,007 INFO L93 Difference]: Finished difference Result 41696 states and 157940 transitions. [2021-06-05 15:09:17,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 15:09:17,007 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:17,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:17,114 INFO L225 Difference]: With dead ends: 41696 [2021-06-05 15:09:17,115 INFO L226 Difference]: Without dead ends: 41642 [2021-06-05 15:09:17,115 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 26.9ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 15:09:17,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41642 states. [2021-06-05 15:09:17,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41642 to 24638. [2021-06-05 15:09:17,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24638 states, 24637 states have (on average 3.794658440556886) internal successors, (93489), 24637 states have internal predecessors, (93489), 0 states have call successors, (0), 0 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 15:09:17,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24638 states to 24638 states and 93489 transitions. [2021-06-05 15:09:17,943 INFO L78 Accepts]: Start accepts. Automaton has 24638 states and 93489 transitions. Word has length 39 [2021-06-05 15:09:17,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:17,943 INFO L482 AbstractCegarLoop]: Abstraction has 24638 states and 93489 transitions. [2021-06-05 15:09:17,943 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:17,943 INFO L276 IsEmpty]: Start isEmpty. Operand 24638 states and 93489 transitions. [2021-06-05 15:09:17,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:17,985 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:17,985 INFO L521 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] [2021-06-05 15:09:17,986 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 15:09:17,986 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:17,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:17,986 INFO L82 PathProgramCache]: Analyzing trace with hash -611468740, now seen corresponding path program 9 times [2021-06-05 15:09:17,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:17,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705000853] [2021-06-05 15:09:17,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:18,017 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 15:09:18,017 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:18,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705000853] [2021-06-05 15:09:18,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705000853] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:18,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:18,018 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 15:09:18,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147504073] [2021-06-05 15:09:18,018 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 15:09:18,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:18,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 15:09:18,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 15:09:18,019 INFO L87 Difference]: Start difference. First operand 24638 states and 93489 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:18,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:18,253 INFO L93 Difference]: Finished difference Result 42985 states and 160920 transitions. [2021-06-05 15:09:18,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 15:09:18,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:18,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:18,361 INFO L225 Difference]: With dead ends: 42985 [2021-06-05 15:09:18,361 INFO L226 Difference]: Without dead ends: 42898 [2021-06-05 15:09:18,362 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.9ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 15:09:18,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42898 states. [2021-06-05 15:09:19,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42898 to 25620. [2021-06-05 15:09:19,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25620 states, 25619 states have (on average 3.7593973222998556) internal successors, (96312), 25619 states have internal predecessors, (96312), 0 states have call successors, (0), 0 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 15:09:19,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25620 states to 25620 states and 96312 transitions. [2021-06-05 15:09:19,194 INFO L78 Accepts]: Start accepts. Automaton has 25620 states and 96312 transitions. Word has length 39 [2021-06-05 15:09:19,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:19,194 INFO L482 AbstractCegarLoop]: Abstraction has 25620 states and 96312 transitions. [2021-06-05 15:09:19,196 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:19,196 INFO L276 IsEmpty]: Start isEmpty. Operand 25620 states and 96312 transitions. [2021-06-05 15:09:19,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:19,238 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:19,239 INFO L521 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] [2021-06-05 15:09:19,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 15:09:19,239 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:19,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:19,239 INFO L82 PathProgramCache]: Analyzing trace with hash 474296098, now seen corresponding path program 10 times [2021-06-05 15:09:19,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:19,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770860517] [2021-06-05 15:09:19,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:19,282 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 15:09:19,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:19,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770860517] [2021-06-05 15:09:19,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770860517] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:19,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:19,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 15:09:19,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617365535] [2021-06-05 15:09:19,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 15:09:19,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:19,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 15:09:19,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-05 15:09:19,284 INFO L87 Difference]: Start difference. First operand 25620 states and 96312 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:19,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:19,591 INFO L93 Difference]: Finished difference Result 43699 states and 163815 transitions. [2021-06-05 15:09:19,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 15:09:19,592 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:19,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:19,688 INFO L225 Difference]: With dead ends: 43699 [2021-06-05 15:09:19,688 INFO L226 Difference]: Without dead ends: 43663 [2021-06-05 15:09:19,688 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 25.7ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 15:09:20,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43663 states. [2021-06-05 15:09:20,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43663 to 25389. [2021-06-05 15:09:20,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25389 states, 25388 states have (on average 3.7583110130770443) internal successors, (95416), 25388 states have internal predecessors, (95416), 0 states have call successors, (0), 0 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 15:09:20,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25389 states to 25389 states and 95416 transitions. [2021-06-05 15:09:20,715 INFO L78 Accepts]: Start accepts. Automaton has 25389 states and 95416 transitions. Word has length 39 [2021-06-05 15:09:20,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:20,716 INFO L482 AbstractCegarLoop]: Abstraction has 25389 states and 95416 transitions. [2021-06-05 15:09:20,716 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:20,716 INFO L276 IsEmpty]: Start isEmpty. Operand 25389 states and 95416 transitions. [2021-06-05 15:09:20,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:20,771 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:20,771 INFO L521 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] [2021-06-05 15:09:20,772 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 15:09:20,772 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:20,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:20,772 INFO L82 PathProgramCache]: Analyzing trace with hash 74649346, now seen corresponding path program 11 times [2021-06-05 15:09:20,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:20,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911333218] [2021-06-05 15:09:20,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:20,803 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 15:09:20,803 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:20,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911333218] [2021-06-05 15:09:20,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911333218] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:20,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:20,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 15:09:20,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113279752] [2021-06-05 15:09:20,804 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 15:09:20,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:20,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 15:09:20,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 15:09:20,805 INFO L87 Difference]: Start difference. First operand 25389 states and 95416 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:21,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:21,020 INFO L93 Difference]: Finished difference Result 25139 states and 94087 transitions. [2021-06-05 15:09:21,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 15:09:21,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:21,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:21,080 INFO L225 Difference]: With dead ends: 25139 [2021-06-05 15:09:21,081 INFO L226 Difference]: Without dead ends: 25088 [2021-06-05 15:09:21,081 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 15:09:21,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25088 states. [2021-06-05 15:09:21,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25088 to 24839. [2021-06-05 15:09:21,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24839 states, 24838 states have (on average 3.7560995249214915) internal successors, (93294), 24838 states have internal predecessors, (93294), 0 states have call successors, (0), 0 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 15:09:21,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24839 states to 24839 states and 93294 transitions. [2021-06-05 15:09:21,784 INFO L78 Accepts]: Start accepts. Automaton has 24839 states and 93294 transitions. Word has length 39 [2021-06-05 15:09:21,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:21,784 INFO L482 AbstractCegarLoop]: Abstraction has 24839 states and 93294 transitions. [2021-06-05 15:09:21,784 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:21,784 INFO L276 IsEmpty]: Start isEmpty. Operand 24839 states and 93294 transitions. [2021-06-05 15:09:21,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:21,826 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:21,826 INFO L521 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] [2021-06-05 15:09:21,826 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 15:09:21,826 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:21,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:21,826 INFO L82 PathProgramCache]: Analyzing trace with hash -798849100, now seen corresponding path program 12 times [2021-06-05 15:09:21,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:21,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238196444] [2021-06-05 15:09:21,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:21,868 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 15:09:21,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:21,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238196444] [2021-06-05 15:09:21,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238196444] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:21,869 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:21,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 15:09:21,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23259025] [2021-06-05 15:09:21,869 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 15:09:21,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:21,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 15:09:21,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-05 15:09:21,870 INFO L87 Difference]: Start difference. First operand 24839 states and 93294 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:22,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:22,248 INFO L93 Difference]: Finished difference Result 43989 states and 162312 transitions. [2021-06-05 15:09:22,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 15:09:22,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:22,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:22,350 INFO L225 Difference]: With dead ends: 43989 [2021-06-05 15:09:22,350 INFO L226 Difference]: Without dead ends: 43863 [2021-06-05 15:09:22,351 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 45.7ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-06-05 15:09:22,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43863 states. [2021-06-05 15:09:23,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43863 to 28440. [2021-06-05 15:09:23,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28440 states, 28439 states have (on average 3.686486866626815) internal successors, (104840), 28439 states have internal predecessors, (104840), 0 states have call successors, (0), 0 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 15:09:23,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28440 states to 28440 states and 104840 transitions. [2021-06-05 15:09:23,241 INFO L78 Accepts]: Start accepts. Automaton has 28440 states and 104840 transitions. Word has length 39 [2021-06-05 15:09:23,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:23,241 INFO L482 AbstractCegarLoop]: Abstraction has 28440 states and 104840 transitions. [2021-06-05 15:09:23,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:23,241 INFO L276 IsEmpty]: Start isEmpty. Operand 28440 states and 104840 transitions. [2021-06-05 15:09:23,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:23,287 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:23,287 INFO L521 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] [2021-06-05 15:09:23,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 15:09:23,288 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:23,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:23,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1771965296, now seen corresponding path program 13 times [2021-06-05 15:09:23,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:23,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217383969] [2021-06-05 15:09:23,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:23,357 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 15:09:23,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:23,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217383969] [2021-06-05 15:09:23,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217383969] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:23,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:23,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 15:09:23,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714253173] [2021-06-05 15:09:23,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 15:09:23,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:23,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 15:09:23,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-05 15:09:23,359 INFO L87 Difference]: Start difference. First operand 28440 states and 104840 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:23,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:23,997 INFO L93 Difference]: Finished difference Result 42223 states and 154538 transitions. [2021-06-05 15:09:23,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 15:09:23,997 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:23,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:24,086 INFO L225 Difference]: With dead ends: 42223 [2021-06-05 15:09:24,086 INFO L226 Difference]: Without dead ends: 42199 [2021-06-05 15:09:24,086 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 59.9ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-06-05 15:09:24,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42199 states. [2021-06-05 15:09:24,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42199 to 28621. [2021-06-05 15:09:24,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28621 states, 28620 states have (on average 3.675611460517121) internal successors, (105196), 28620 states have internal predecessors, (105196), 0 states have call successors, (0), 0 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 15:09:25,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28621 states to 28621 states and 105196 transitions. [2021-06-05 15:09:25,043 INFO L78 Accepts]: Start accepts. Automaton has 28621 states and 105196 transitions. Word has length 39 [2021-06-05 15:09:25,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:25,043 INFO L482 AbstractCegarLoop]: Abstraction has 28621 states and 105196 transitions. [2021-06-05 15:09:25,043 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:25,043 INFO L276 IsEmpty]: Start isEmpty. Operand 28621 states and 105196 transitions. [2021-06-05 15:09:25,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:25,120 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:25,121 INFO L521 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] [2021-06-05 15:09:25,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-05 15:09:25,121 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:25,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:25,121 INFO L82 PathProgramCache]: Analyzing trace with hash -692989772, now seen corresponding path program 14 times [2021-06-05 15:09:25,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:25,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459046686] [2021-06-05 15:09:25,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:25,155 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 15:09:25,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:25,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459046686] [2021-06-05 15:09:25,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459046686] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:25,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:25,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 15:09:25,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838383584] [2021-06-05 15:09:25,156 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 15:09:25,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:25,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 15:09:25,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 15:09:25,157 INFO L87 Difference]: Start difference. First operand 28621 states and 105196 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:25,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:25,346 INFO L93 Difference]: Finished difference Result 27813 states and 101796 transitions. [2021-06-05 15:09:25,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 15:09:25,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:25,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:25,408 INFO L225 Difference]: With dead ends: 27813 [2021-06-05 15:09:25,408 INFO L226 Difference]: Without dead ends: 27738 [2021-06-05 15:09:25,408 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.9ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 15:09:25,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27738 states. [2021-06-05 15:09:25,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27738 to 27386. [2021-06-05 15:09:25,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27386 states, 27385 states have (on average 3.679496074493336) internal successors, (100763), 27385 states have internal predecessors, (100763), 0 states have call successors, (0), 0 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 15:09:25,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27386 states to 27386 states and 100763 transitions. [2021-06-05 15:09:25,967 INFO L78 Accepts]: Start accepts. Automaton has 27386 states and 100763 transitions. Word has length 39 [2021-06-05 15:09:25,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:25,968 INFO L482 AbstractCegarLoop]: Abstraction has 27386 states and 100763 transitions. [2021-06-05 15:09:25,968 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:25,968 INFO L276 IsEmpty]: Start isEmpty. Operand 27386 states and 100763 transitions. [2021-06-05 15:09:26,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:26,015 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:26,015 INFO L521 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] [2021-06-05 15:09:26,015 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-05 15:09:26,015 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:26,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:26,016 INFO L82 PathProgramCache]: Analyzing trace with hash -747163012, now seen corresponding path program 15 times [2021-06-05 15:09:26,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:26,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578972067] [2021-06-05 15:09:26,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:26,073 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 15:09:26,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:26,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578972067] [2021-06-05 15:09:26,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578972067] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:26,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:26,074 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 15:09:26,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635192241] [2021-06-05 15:09:26,074 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 15:09:26,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:26,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 15:09:26,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 15:09:26,075 INFO L87 Difference]: Start difference. First operand 27386 states and 100763 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:26,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:26,617 INFO L93 Difference]: Finished difference Result 50523 states and 183246 transitions. [2021-06-05 15:09:26,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 15:09:26,617 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:26,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:26,732 INFO L225 Difference]: With dead ends: 50523 [2021-06-05 15:09:26,732 INFO L226 Difference]: Without dead ends: 50475 [2021-06-05 15:09:26,732 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.7ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-06-05 15:09:26,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50475 states. [2021-06-05 15:09:27,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50475 to 27707. [2021-06-05 15:09:27,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27707 states, 27706 states have (on average 3.667978055294882) internal successors, (101625), 27706 states have internal predecessors, (101625), 0 states have call successors, (0), 0 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 15:09:27,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27707 states to 27707 states and 101625 transitions. [2021-06-05 15:09:27,393 INFO L78 Accepts]: Start accepts. Automaton has 27707 states and 101625 transitions. Word has length 39 [2021-06-05 15:09:27,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:27,394 INFO L482 AbstractCegarLoop]: Abstraction has 27707 states and 101625 transitions. [2021-06-05 15:09:27,394 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:27,394 INFO L276 IsEmpty]: Start isEmpty. Operand 27707 states and 101625 transitions. [2021-06-05 15:09:27,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:27,651 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:27,651 INFO L521 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] [2021-06-05 15:09:27,651 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-05 15:09:27,651 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:27,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:27,652 INFO L82 PathProgramCache]: Analyzing trace with hash 301429852, now seen corresponding path program 16 times [2021-06-05 15:09:27,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:27,652 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418464372] [2021-06-05 15:09:27,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:27,684 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 15:09:27,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:27,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418464372] [2021-06-05 15:09:27,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418464372] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:27,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:27,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 15:09:27,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652788069] [2021-06-05 15:09:27,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 15:09:27,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:27,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 15:09:27,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 15:09:27,686 INFO L87 Difference]: Start difference. First operand 27707 states and 101625 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:27,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:27,919 INFO L93 Difference]: Finished difference Result 39646 states and 142334 transitions. [2021-06-05 15:09:27,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 15:09:27,920 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:27,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:27,998 INFO L225 Difference]: With dead ends: 39646 [2021-06-05 15:09:27,998 INFO L226 Difference]: Without dead ends: 39506 [2021-06-05 15:09:27,999 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.1ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-06-05 15:09:28,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39506 states. [2021-06-05 15:09:28,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39506 to 23423. [2021-06-05 15:09:28,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23423 states, 23422 states have (on average 3.5910255315515327) internal successors, (84109), 23422 states have internal predecessors, (84109), 0 states have call successors, (0), 0 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 15:09:28,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23423 states to 23423 states and 84109 transitions. [2021-06-05 15:09:28,490 INFO L78 Accepts]: Start accepts. Automaton has 23423 states and 84109 transitions. Word has length 39 [2021-06-05 15:09:28,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:28,490 INFO L482 AbstractCegarLoop]: Abstraction has 23423 states and 84109 transitions. [2021-06-05 15:09:28,490 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:28,490 INFO L276 IsEmpty]: Start isEmpty. Operand 23423 states and 84109 transitions. [2021-06-05 15:09:28,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:28,523 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:28,523 INFO L521 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] [2021-06-05 15:09:28,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-05 15:09:28,523 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:28,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:28,524 INFO L82 PathProgramCache]: Analyzing trace with hash -2132816678, now seen corresponding path program 17 times [2021-06-05 15:09:28,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:28,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135317793] [2021-06-05 15:09:28,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:28,564 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 15:09:28,564 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:28,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135317793] [2021-06-05 15:09:28,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135317793] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:28,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:28,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 15:09:28,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187176946] [2021-06-05 15:09:28,565 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 15:09:28,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:28,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 15:09:28,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 15:09:28,565 INFO L87 Difference]: Start difference. First operand 23423 states and 84109 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:28,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:28,906 INFO L93 Difference]: Finished difference Result 40941 states and 145659 transitions. [2021-06-05 15:09:28,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 15:09:28,906 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:28,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:28,989 INFO L225 Difference]: With dead ends: 40941 [2021-06-05 15:09:28,989 INFO L226 Difference]: Without dead ends: 40659 [2021-06-05 15:09:28,989 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 20.0ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-05 15:09:29,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40659 states. [2021-06-05 15:09:29,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40659 to 24350. [2021-06-05 15:09:29,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24350 states, 24349 states have (on average 3.5688118608567088) internal successors, (86897), 24349 states have internal predecessors, (86897), 0 states have call successors, (0), 0 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 15:09:29,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24350 states to 24350 states and 86897 transitions. [2021-06-05 15:09:29,517 INFO L78 Accepts]: Start accepts. Automaton has 24350 states and 86897 transitions. Word has length 39 [2021-06-05 15:09:29,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:29,517 INFO L482 AbstractCegarLoop]: Abstraction has 24350 states and 86897 transitions. [2021-06-05 15:09:29,517 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:29,517 INFO L276 IsEmpty]: Start isEmpty. Operand 24350 states and 86897 transitions. [2021-06-05 15:09:29,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:29,554 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:29,554 INFO L521 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] [2021-06-05 15:09:29,555 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-05 15:09:29,555 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:29,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:29,555 INFO L82 PathProgramCache]: Analyzing trace with hash 619948732, now seen corresponding path program 18 times [2021-06-05 15:09:29,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:29,555 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991977899] [2021-06-05 15:09:29,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:29,613 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 15:09:29,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:29,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991977899] [2021-06-05 15:09:29,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991977899] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:29,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:29,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 15:09:29,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622974263] [2021-06-05 15:09:29,615 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 15:09:29,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:29,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 15:09:29,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 15:09:29,616 INFO L87 Difference]: Start difference. First operand 24350 states and 86897 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:30,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:30,100 INFO L93 Difference]: Finished difference Result 41722 states and 144495 transitions. [2021-06-05 15:09:30,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 15:09:30,101 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:30,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:30,201 INFO L225 Difference]: With dead ends: 41722 [2021-06-05 15:09:30,201 INFO L226 Difference]: Without dead ends: 41134 [2021-06-05 15:09:30,201 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 132.9ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 15:09:30,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41134 states. [2021-06-05 15:09:30,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41134 to 24602. [2021-06-05 15:09:30,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24602 states, 24601 states have (on average 3.503231575952197) internal successors, (86183), 24601 states have internal predecessors, (86183), 0 states have call successors, (0), 0 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 15:09:30,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24602 states to 24602 states and 86183 transitions. [2021-06-05 15:09:30,825 INFO L78 Accepts]: Start accepts. Automaton has 24602 states and 86183 transitions. Word has length 39 [2021-06-05 15:09:30,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:30,825 INFO L482 AbstractCegarLoop]: Abstraction has 24602 states and 86183 transitions. [2021-06-05 15:09:30,825 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:30,825 INFO L276 IsEmpty]: Start isEmpty. Operand 24602 states and 86183 transitions. [2021-06-05 15:09:30,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:30,864 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:30,864 INFO L521 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] [2021-06-05 15:09:30,864 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-05 15:09:30,864 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:30,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:30,864 INFO L82 PathProgramCache]: Analyzing trace with hash -262188358, now seen corresponding path program 19 times [2021-06-05 15:09:30,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:30,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531102065] [2021-06-05 15:09:30,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:30,910 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 15:09:30,910 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:30,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531102065] [2021-06-05 15:09:30,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531102065] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:30,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:30,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 15:09:30,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830275444] [2021-06-05 15:09:30,910 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 15:09:30,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:30,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 15:09:30,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 15:09:30,911 INFO L87 Difference]: Start difference. First operand 24602 states and 86183 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:31,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:31,250 INFO L93 Difference]: Finished difference Result 39683 states and 136545 transitions. [2021-06-05 15:09:31,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 15:09:31,250 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:31,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:31,323 INFO L225 Difference]: With dead ends: 39683 [2021-06-05 15:09:31,323 INFO L226 Difference]: Without dead ends: 39331 [2021-06-05 15:09:31,324 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 31.0ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-05 15:09:31,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39331 states. [2021-06-05 15:09:31,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39331 to 23826. [2021-06-05 15:09:31,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23826 states, 23825 states have (on average 3.4768520461699897) internal successors, (82836), 23825 states have internal predecessors, (82836), 0 states have call successors, (0), 0 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 15:09:31,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23826 states to 23826 states and 82836 transitions. [2021-06-05 15:09:31,808 INFO L78 Accepts]: Start accepts. Automaton has 23826 states and 82836 transitions. Word has length 39 [2021-06-05 15:09:31,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:31,809 INFO L482 AbstractCegarLoop]: Abstraction has 23826 states and 82836 transitions. [2021-06-05 15:09:31,809 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:31,809 INFO L276 IsEmpty]: Start isEmpty. Operand 23826 states and 82836 transitions. [2021-06-05 15:09:31,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:31,843 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:31,843 INFO L521 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] [2021-06-05 15:09:31,843 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-05 15:09:31,843 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:31,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:31,843 INFO L82 PathProgramCache]: Analyzing trace with hash -999623524, now seen corresponding path program 20 times [2021-06-05 15:09:31,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:31,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897705314] [2021-06-05 15:09:31,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:31,883 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 15:09:31,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:31,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897705314] [2021-06-05 15:09:31,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897705314] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:31,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:31,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 15:09:31,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916561132] [2021-06-05 15:09:31,884 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 15:09:31,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:31,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 15:09:31,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 15:09:31,885 INFO L87 Difference]: Start difference. First operand 23826 states and 82836 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:32,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:32,316 INFO L93 Difference]: Finished difference Result 36259 states and 121650 transitions. [2021-06-05 15:09:32,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 15:09:32,316 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:32,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:32,382 INFO L225 Difference]: With dead ends: 36259 [2021-06-05 15:09:32,382 INFO L226 Difference]: Without dead ends: 35323 [2021-06-05 15:09:32,383 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 39.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 15:09:32,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35323 states. [2021-06-05 15:09:32,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35323 to 21699. [2021-06-05 15:09:32,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21699 states, 21698 states have (on average 3.39409162134759) internal successors, (73645), 21698 states have internal predecessors, (73645), 0 states have call successors, (0), 0 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 15:09:32,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21699 states to 21699 states and 73645 transitions. [2021-06-05 15:09:32,795 INFO L78 Accepts]: Start accepts. Automaton has 21699 states and 73645 transitions. Word has length 39 [2021-06-05 15:09:32,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:32,796 INFO L482 AbstractCegarLoop]: Abstraction has 21699 states and 73645 transitions. [2021-06-05 15:09:32,796 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:32,796 INFO L276 IsEmpty]: Start isEmpty. Operand 21699 states and 73645 transitions. [2021-06-05 15:09:32,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:32,825 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:32,825 INFO L521 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] [2021-06-05 15:09:32,826 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-05 15:09:32,826 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:32,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:32,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1489406878, now seen corresponding path program 21 times [2021-06-05 15:09:32,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:32,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617668484] [2021-06-05 15:09:32,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:32,858 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 15:09:32,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:32,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617668484] [2021-06-05 15:09:32,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617668484] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:32,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:32,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 15:09:32,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411675876] [2021-06-05 15:09:32,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 15:09:32,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:32,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 15:09:32,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 15:09:32,859 INFO L87 Difference]: Start difference. First operand 21699 states and 73645 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:33,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:33,050 INFO L93 Difference]: Finished difference Result 34469 states and 114405 transitions. [2021-06-05 15:09:33,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 15:09:33,050 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:33,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:33,110 INFO L225 Difference]: With dead ends: 34469 [2021-06-05 15:09:33,111 INFO L226 Difference]: Without dead ends: 34285 [2021-06-05 15:09:33,111 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.8ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-06-05 15:09:33,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34285 states. [2021-06-05 15:09:33,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34285 to 20585. [2021-06-05 15:09:33,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20585 states, 20584 states have (on average 3.3424504469490866) internal successors, (68801), 20584 states have internal predecessors, (68801), 0 states have call successors, (0), 0 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 15:09:33,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20585 states to 20585 states and 68801 transitions. [2021-06-05 15:09:33,709 INFO L78 Accepts]: Start accepts. Automaton has 20585 states and 68801 transitions. Word has length 39 [2021-06-05 15:09:33,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:33,709 INFO L482 AbstractCegarLoop]: Abstraction has 20585 states and 68801 transitions. [2021-06-05 15:09:33,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:33,709 INFO L276 IsEmpty]: Start isEmpty. Operand 20585 states and 68801 transitions. [2021-06-05 15:09:33,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:33,737 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:33,737 INFO L521 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] [2021-06-05 15:09:33,737 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-05 15:09:33,737 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:33,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:33,738 INFO L82 PathProgramCache]: Analyzing trace with hash 921984860, now seen corresponding path program 22 times [2021-06-05 15:09:33,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:33,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543862786] [2021-06-05 15:09:33,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:33,777 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 15:09:33,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:33,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543862786] [2021-06-05 15:09:33,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543862786] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:33,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:33,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 15:09:33,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280531398] [2021-06-05 15:09:33,778 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 15:09:33,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:33,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 15:09:33,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 15:09:33,778 INFO L87 Difference]: Start difference. First operand 20585 states and 68801 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:34,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:34,069 INFO L93 Difference]: Finished difference Result 35148 states and 115453 transitions. [2021-06-05 15:09:34,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 15:09:34,070 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:34,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:34,131 INFO L225 Difference]: With dead ends: 35148 [2021-06-05 15:09:34,131 INFO L226 Difference]: Without dead ends: 34004 [2021-06-05 15:09:34,132 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 38.3ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 15:09:34,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34004 states. [2021-06-05 15:09:34,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34004 to 18802. [2021-06-05 15:09:34,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18802 states, 18801 states have (on average 3.3137067177277806) internal successors, (62301), 18801 states have internal predecessors, (62301), 0 states have call successors, (0), 0 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 15:09:34,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18802 states to 18802 states and 62301 transitions. [2021-06-05 15:09:34,738 INFO L78 Accepts]: Start accepts. Automaton has 18802 states and 62301 transitions. Word has length 39 [2021-06-05 15:09:34,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:34,739 INFO L482 AbstractCegarLoop]: Abstraction has 18802 states and 62301 transitions. [2021-06-05 15:09:34,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:34,739 INFO L276 IsEmpty]: Start isEmpty. Operand 18802 states and 62301 transitions. [2021-06-05 15:09:34,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:34,763 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:34,763 INFO L521 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] [2021-06-05 15:09:34,763 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-05 15:09:34,763 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:34,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:34,764 INFO L82 PathProgramCache]: Analyzing trace with hash 84428698, now seen corresponding path program 23 times [2021-06-05 15:09:34,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:34,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942595426] [2021-06-05 15:09:34,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:34,819 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 15:09:34,819 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:34,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942595426] [2021-06-05 15:09:34,820 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942595426] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:34,820 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:34,820 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 15:09:34,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391076480] [2021-06-05 15:09:34,820 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 15:09:34,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:34,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 15:09:34,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 15:09:34,821 INFO L87 Difference]: Start difference. First operand 18802 states and 62301 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:35,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:35,118 INFO L93 Difference]: Finished difference Result 30242 states and 99222 transitions. [2021-06-05 15:09:35,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 15:09:35,118 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:35,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:35,179 INFO L225 Difference]: With dead ends: 30242 [2021-06-05 15:09:35,179 INFO L226 Difference]: Without dead ends: 30074 [2021-06-05 15:09:35,179 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 35.7ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-06-05 15:09:35,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30074 states. [2021-06-05 15:09:35,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30074 to 18728. [2021-06-05 15:09:35,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18728 states, 18727 states have (on average 3.3072035029636355) internal successors, (61934), 18727 states have internal predecessors, (61934), 0 states have call successors, (0), 0 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 15:09:35,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18728 states to 18728 states and 61934 transitions. [2021-06-05 15:09:35,539 INFO L78 Accepts]: Start accepts. Automaton has 18728 states and 61934 transitions. Word has length 39 [2021-06-05 15:09:35,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:35,540 INFO L482 AbstractCegarLoop]: Abstraction has 18728 states and 61934 transitions. [2021-06-05 15:09:35,540 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:35,540 INFO L276 IsEmpty]: Start isEmpty. Operand 18728 states and 61934 transitions. [2021-06-05 15:09:35,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:35,564 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:35,564 INFO L521 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] [2021-06-05 15:09:35,564 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-05 15:09:35,564 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:35,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:35,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1685327770, now seen corresponding path program 24 times [2021-06-05 15:09:35,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:35,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427401843] [2021-06-05 15:09:35,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:35,614 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 15:09:35,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:35,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427401843] [2021-06-05 15:09:35,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427401843] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:35,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:35,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 15:09:35,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557544878] [2021-06-05 15:09:35,615 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 15:09:35,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:35,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 15:09:35,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-05 15:09:35,615 INFO L87 Difference]: Start difference. First operand 18728 states and 61934 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:36,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:36,120 INFO L93 Difference]: Finished difference Result 29724 states and 97345 transitions. [2021-06-05 15:09:36,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 15:09:36,121 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:36,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:36,178 INFO L225 Difference]: With dead ends: 29724 [2021-06-05 15:09:36,178 INFO L226 Difference]: Without dead ends: 29232 [2021-06-05 15:09:36,179 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 47.5ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 15:09:36,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29232 states. [2021-06-05 15:09:36,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29232 to 18276. [2021-06-05 15:09:36,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18276 states, 18275 states have (on average 3.3015047879616963) internal successors, (60335), 18275 states have internal predecessors, (60335), 0 states have call successors, (0), 0 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 15:09:36,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18276 states to 18276 states and 60335 transitions. [2021-06-05 15:09:36,607 INFO L78 Accepts]: Start accepts. Automaton has 18276 states and 60335 transitions. Word has length 39 [2021-06-05 15:09:36,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:36,607 INFO L482 AbstractCegarLoop]: Abstraction has 18276 states and 60335 transitions. [2021-06-05 15:09:36,607 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:36,607 INFO L276 IsEmpty]: Start isEmpty. Operand 18276 states and 60335 transitions. [2021-06-05 15:09:36,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:36,631 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:36,631 INFO L521 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] [2021-06-05 15:09:36,632 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-05 15:09:36,632 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:36,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:36,632 INFO L82 PathProgramCache]: Analyzing trace with hash 6385336, now seen corresponding path program 25 times [2021-06-05 15:09:36,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:36,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756735940] [2021-06-05 15:09:36,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:36,701 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 15:09:36,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:36,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756735940] [2021-06-05 15:09:36,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756735940] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:36,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:36,702 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 15:09:36,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848463842] [2021-06-05 15:09:36,702 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 15:09:36,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:36,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 15:09:36,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-05 15:09:36,703 INFO L87 Difference]: Start difference. First operand 18276 states and 60335 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:37,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:37,119 INFO L93 Difference]: Finished difference Result 29259 states and 95348 transitions. [2021-06-05 15:09:37,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 15:09:37,120 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:37,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:37,173 INFO L225 Difference]: With dead ends: 29259 [2021-06-05 15:09:37,173 INFO L226 Difference]: Without dead ends: 28821 [2021-06-05 15:09:37,173 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 83.9ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-05 15:09:37,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28821 states. [2021-06-05 15:09:37,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28821 to 18412. [2021-06-05 15:09:37,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18412 states, 18411 states have (on average 3.280647439031014) internal successors, (60400), 18411 states have internal predecessors, (60400), 0 states have call successors, (0), 0 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 15:09:37,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18412 states to 18412 states and 60400 transitions. [2021-06-05 15:09:37,658 INFO L78 Accepts]: Start accepts. Automaton has 18412 states and 60400 transitions. Word has length 39 [2021-06-05 15:09:37,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:37,658 INFO L482 AbstractCegarLoop]: Abstraction has 18412 states and 60400 transitions. [2021-06-05 15:09:37,658 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:37,658 INFO L276 IsEmpty]: Start isEmpty. Operand 18412 states and 60400 transitions. [2021-06-05 15:09:37,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:37,682 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:37,682 INFO L521 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] [2021-06-05 15:09:37,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-05 15:09:37,682 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:37,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:37,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1165798022, now seen corresponding path program 26 times [2021-06-05 15:09:37,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:37,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291797088] [2021-06-05 15:09:37,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:37,727 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 15:09:37,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:37,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291797088] [2021-06-05 15:09:37,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291797088] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:37,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:37,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 15:09:37,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593998413] [2021-06-05 15:09:37,728 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 15:09:37,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:37,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 15:09:37,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 15:09:37,729 INFO L87 Difference]: Start difference. First operand 18412 states and 60400 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:37,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:37,969 INFO L93 Difference]: Finished difference Result 30084 states and 97312 transitions. [2021-06-05 15:09:37,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 15:09:37,969 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:37,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:38,022 INFO L225 Difference]: With dead ends: 30084 [2021-06-05 15:09:38,022 INFO L226 Difference]: Without dead ends: 29828 [2021-06-05 15:09:38,022 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 32.9ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-06-05 15:09:38,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29828 states. [2021-06-05 15:09:38,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29828 to 18388. [2021-06-05 15:09:38,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18388 states, 18387 states have (on average 3.2692663294719093) internal successors, (60112), 18387 states have internal predecessors, (60112), 0 states have call successors, (0), 0 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 15:09:38,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18388 states to 18388 states and 60112 transitions. [2021-06-05 15:09:38,365 INFO L78 Accepts]: Start accepts. Automaton has 18388 states and 60112 transitions. Word has length 39 [2021-06-05 15:09:38,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:38,366 INFO L482 AbstractCegarLoop]: Abstraction has 18388 states and 60112 transitions. [2021-06-05 15:09:38,366 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:38,366 INFO L276 IsEmpty]: Start isEmpty. Operand 18388 states and 60112 transitions. [2021-06-05 15:09:38,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:38,389 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:38,390 INFO L521 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] [2021-06-05 15:09:38,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-05 15:09:38,390 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:38,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:38,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1239867770, now seen corresponding path program 27 times [2021-06-05 15:09:38,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:38,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135239279] [2021-06-05 15:09:38,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:38,435 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 15:09:38,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:38,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135239279] [2021-06-05 15:09:38,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135239279] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:38,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:38,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 15:09:38,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571628406] [2021-06-05 15:09:38,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 15:09:38,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:38,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 15:09:38,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-05 15:09:38,436 INFO L87 Difference]: Start difference. First operand 18388 states and 60112 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:38,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:38,926 INFO L93 Difference]: Finished difference Result 29768 states and 96152 transitions. [2021-06-05 15:09:38,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 15:09:38,927 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:38,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:38,986 INFO L225 Difference]: With dead ends: 29768 [2021-06-05 15:09:38,986 INFO L226 Difference]: Without dead ends: 28672 [2021-06-05 15:09:38,987 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 44.1ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 15:09:39,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28672 states. [2021-06-05 15:09:39,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28672 to 17734. [2021-06-05 15:09:39,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17734 states, 17733 states have (on average 3.2457564991823156) internal successors, (57557), 17733 states have internal predecessors, (57557), 0 states have call successors, (0), 0 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 15:09:39,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17734 states to 17734 states and 57557 transitions. [2021-06-05 15:09:39,305 INFO L78 Accepts]: Start accepts. Automaton has 17734 states and 57557 transitions. Word has length 39 [2021-06-05 15:09:39,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:39,305 INFO L482 AbstractCegarLoop]: Abstraction has 17734 states and 57557 transitions. [2021-06-05 15:09:39,305 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:39,305 INFO L276 IsEmpty]: Start isEmpty. Operand 17734 states and 57557 transitions. [2021-06-05 15:09:39,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:39,328 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:39,328 INFO L521 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] [2021-06-05 15:09:39,329 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-05 15:09:39,329 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:39,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:39,329 INFO L82 PathProgramCache]: Analyzing trace with hash 492882072, now seen corresponding path program 28 times [2021-06-05 15:09:39,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:39,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094767356] [2021-06-05 15:09:39,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:39,382 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 15:09:39,383 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:39,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094767356] [2021-06-05 15:09:39,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094767356] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:39,383 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:39,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 15:09:39,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496253511] [2021-06-05 15:09:39,383 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 15:09:39,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:39,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 15:09:39,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-05 15:09:39,384 INFO L87 Difference]: Start difference. First operand 17734 states and 57557 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:39,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:39,748 INFO L93 Difference]: Finished difference Result 28772 states and 92301 transitions. [2021-06-05 15:09:39,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 15:09:39,748 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:39,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:39,797 INFO L225 Difference]: With dead ends: 28772 [2021-06-05 15:09:39,797 INFO L226 Difference]: Without dead ends: 27282 [2021-06-05 15:09:39,798 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 73.8ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-05 15:09:39,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27282 states. [2021-06-05 15:09:40,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27282 to 16786. [2021-06-05 15:09:40,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16786 states, 16785 states have (on average 3.2374739350610664) internal successors, (54341), 16785 states have internal predecessors, (54341), 0 states have call successors, (0), 0 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 15:09:40,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16786 states to 16786 states and 54341 transitions. [2021-06-05 15:09:40,358 INFO L78 Accepts]: Start accepts. Automaton has 16786 states and 54341 transitions. Word has length 39 [2021-06-05 15:09:40,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:40,358 INFO L482 AbstractCegarLoop]: Abstraction has 16786 states and 54341 transitions. [2021-06-05 15:09:40,358 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:40,358 INFO L276 IsEmpty]: Start isEmpty. Operand 16786 states and 54341 transitions. [2021-06-05 15:09:40,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:40,379 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:40,379 INFO L521 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] [2021-06-05 15:09:40,379 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-05 15:09:40,379 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:40,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:40,380 INFO L82 PathProgramCache]: Analyzing trace with hash -652913060, now seen corresponding path program 29 times [2021-06-05 15:09:40,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:40,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116460106] [2021-06-05 15:09:40,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:40,428 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 15:09:40,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:40,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116460106] [2021-06-05 15:09:40,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116460106] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:40,428 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:40,428 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 15:09:40,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683315565] [2021-06-05 15:09:40,428 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 15:09:40,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:40,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 15:09:40,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-05 15:09:40,429 INFO L87 Difference]: Start difference. First operand 16786 states and 54341 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:40,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:40,848 INFO L93 Difference]: Finished difference Result 27715 states and 88963 transitions. [2021-06-05 15:09:40,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 15:09:40,848 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:40,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:40,894 INFO L225 Difference]: With dead ends: 27715 [2021-06-05 15:09:40,894 INFO L226 Difference]: Without dead ends: 26709 [2021-06-05 15:09:40,894 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 69.6ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-05 15:09:40,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26709 states. [2021-06-05 15:09:41,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26709 to 16048. [2021-06-05 15:09:41,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16048 states, 16047 states have (on average 3.2265220913566397) internal successors, (51776), 16047 states have internal predecessors, (51776), 0 states have call successors, (0), 0 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 15:09:41,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16048 states to 16048 states and 51776 transitions. [2021-06-05 15:09:41,183 INFO L78 Accepts]: Start accepts. Automaton has 16048 states and 51776 transitions. Word has length 39 [2021-06-05 15:09:41,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:41,183 INFO L482 AbstractCegarLoop]: Abstraction has 16048 states and 51776 transitions. [2021-06-05 15:09:41,183 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:41,183 INFO L276 IsEmpty]: Start isEmpty. Operand 16048 states and 51776 transitions. [2021-06-05 15:09:41,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:41,203 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:41,203 INFO L521 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] [2021-06-05 15:09:41,203 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-05 15:09:41,203 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:41,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:41,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1990404212, now seen corresponding path program 30 times [2021-06-05 15:09:41,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:41,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110096552] [2021-06-05 15:09:41,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:41,232 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 15:09:41,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:41,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110096552] [2021-06-05 15:09:41,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110096552] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:41,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:41,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 15:09:41,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351083173] [2021-06-05 15:09:41,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 15:09:41,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:41,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 15:09:41,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 15:09:41,233 INFO L87 Difference]: Start difference. First operand 16048 states and 51776 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:41,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:41,379 INFO L93 Difference]: Finished difference Result 26537 states and 84145 transitions. [2021-06-05 15:09:41,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 15:09:41,379 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:41,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:41,423 INFO L225 Difference]: With dead ends: 26537 [2021-06-05 15:09:41,423 INFO L226 Difference]: Without dead ends: 26193 [2021-06-05 15:09:41,424 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.9ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-06-05 15:09:41,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26193 states. [2021-06-05 15:09:41,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26193 to 15396. [2021-06-05 15:09:41,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15396 states, 15395 states have (on average 3.2042871062033127) internal successors, (49330), 15395 states have internal predecessors, (49330), 0 states have call successors, (0), 0 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 15:09:41,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15396 states to 15396 states and 49330 transitions. [2021-06-05 15:09:41,959 INFO L78 Accepts]: Start accepts. Automaton has 15396 states and 49330 transitions. Word has length 39 [2021-06-05 15:09:41,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:41,959 INFO L482 AbstractCegarLoop]: Abstraction has 15396 states and 49330 transitions. [2021-06-05 15:09:41,959 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:41,959 INFO L276 IsEmpty]: Start isEmpty. Operand 15396 states and 49330 transitions. [2021-06-05 15:09:41,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:41,979 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:41,979 INFO L521 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] [2021-06-05 15:09:41,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-05 15:09:41,979 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:41,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:41,980 INFO L82 PathProgramCache]: Analyzing trace with hash -486861366, now seen corresponding path program 31 times [2021-06-05 15:09:41,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:41,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253431577] [2021-06-05 15:09:41,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:42,031 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 15:09:42,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:42,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253431577] [2021-06-05 15:09:42,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253431577] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:42,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:42,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 15:09:42,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16821230] [2021-06-05 15:09:42,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 15:09:42,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:42,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 15:09:42,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 15:09:42,032 INFO L87 Difference]: Start difference. First operand 15396 states and 49330 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:42,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:42,303 INFO L93 Difference]: Finished difference Result 19582 states and 58220 transitions. [2021-06-05 15:09:42,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 15:09:42,303 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:42,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:42,339 INFO L225 Difference]: With dead ends: 19582 [2021-06-05 15:09:42,339 INFO L226 Difference]: Without dead ends: 18047 [2021-06-05 15:09:42,339 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 45.1ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 15:09:42,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18047 states. [2021-06-05 15:09:42,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18047 to 10863. [2021-06-05 15:09:42,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10863 states, 10862 states have (on average 3.029736696740932) internal successors, (32909), 10862 states have internal predecessors, (32909), 0 states have call successors, (0), 0 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 15:09:42,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10863 states to 10863 states and 32909 transitions. [2021-06-05 15:09:42,585 INFO L78 Accepts]: Start accepts. Automaton has 10863 states and 32909 transitions. Word has length 39 [2021-06-05 15:09:42,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:42,585 INFO L482 AbstractCegarLoop]: Abstraction has 10863 states and 32909 transitions. [2021-06-05 15:09:42,585 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:42,585 INFO L276 IsEmpty]: Start isEmpty. Operand 10863 states and 32909 transitions. [2021-06-05 15:09:42,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:42,597 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:42,597 INFO L521 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] [2021-06-05 15:09:42,597 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-05 15:09:42,598 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:42,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:42,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1712472694, now seen corresponding path program 32 times [2021-06-05 15:09:42,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:42,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593297349] [2021-06-05 15:09:42,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:42,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:09:42,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:42,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593297349] [2021-06-05 15:09:42,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593297349] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:42,641 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:42,641 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 15:09:42,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478332615] [2021-06-05 15:09:42,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 15:09:42,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:42,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 15:09:42,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-05 15:09:42,642 INFO L87 Difference]: Start difference. First operand 10863 states and 32909 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:42,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:42,874 INFO L93 Difference]: Finished difference Result 16060 states and 47771 transitions. [2021-06-05 15:09:42,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 15:09:42,874 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:42,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:42,896 INFO L225 Difference]: With dead ends: 16060 [2021-06-05 15:09:42,897 INFO L226 Difference]: Without dead ends: 15380 [2021-06-05 15:09:42,897 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 45.4ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 15:09:42,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15380 states. [2021-06-05 15:09:43,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15380 to 10289. [2021-06-05 15:09:43,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10289 states, 10288 states have (on average 3.010303265940902) internal successors, (30970), 10288 states have internal predecessors, (30970), 0 states have call successors, (0), 0 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 15:09:43,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10289 states to 10289 states and 30970 transitions. [2021-06-05 15:09:43,177 INFO L78 Accepts]: Start accepts. Automaton has 10289 states and 30970 transitions. Word has length 39 [2021-06-05 15:09:43,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:43,177 INFO L482 AbstractCegarLoop]: Abstraction has 10289 states and 30970 transitions. [2021-06-05 15:09:43,177 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:43,178 INFO L276 IsEmpty]: Start isEmpty. Operand 10289 states and 30970 transitions. [2021-06-05 15:09:43,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:43,189 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:43,189 INFO L521 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] [2021-06-05 15:09:43,189 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-05 15:09:43,189 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:43,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:43,189 INFO L82 PathProgramCache]: Analyzing trace with hash -12539988, now seen corresponding path program 33 times [2021-06-05 15:09:43,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:43,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421258241] [2021-06-05 15:09:43,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:43,244 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 15:09:43,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:43,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421258241] [2021-06-05 15:09:43,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421258241] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:43,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:43,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 15:09:43,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690601814] [2021-06-05 15:09:43,245 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 15:09:43,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:43,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 15:09:43,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-05 15:09:43,245 INFO L87 Difference]: Start difference. First operand 10289 states and 30970 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:43,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:43,574 INFO L93 Difference]: Finished difference Result 14404 states and 42007 transitions. [2021-06-05 15:09:43,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 15:09:43,574 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:43,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:43,600 INFO L225 Difference]: With dead ends: 14404 [2021-06-05 15:09:43,601 INFO L226 Difference]: Without dead ends: 13806 [2021-06-05 15:09:43,603 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 81.5ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-05 15:09:43,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13806 states. [2021-06-05 15:09:43,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13806 to 9515. [2021-06-05 15:09:43,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9515 states, 9514 states have (on average 2.974248475930208) internal successors, (28297), 9514 states have internal predecessors, (28297), 0 states have call successors, (0), 0 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 15:09:43,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9515 states to 9515 states and 28297 transitions. [2021-06-05 15:09:43,775 INFO L78 Accepts]: Start accepts. Automaton has 9515 states and 28297 transitions. Word has length 39 [2021-06-05 15:09:43,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:43,775 INFO L482 AbstractCegarLoop]: Abstraction has 9515 states and 28297 transitions. [2021-06-05 15:09:43,775 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:43,775 INFO L276 IsEmpty]: Start isEmpty. Operand 9515 states and 28297 transitions. [2021-06-05 15:09:43,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:43,786 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:43,786 INFO L521 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] [2021-06-05 15:09:43,786 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-05 15:09:43,786 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:43,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:43,787 INFO L82 PathProgramCache]: Analyzing trace with hash -467836166, now seen corresponding path program 34 times [2021-06-05 15:09:43,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:43,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683890710] [2021-06-05 15:09:43,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:43,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:09:43,824 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:43,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683890710] [2021-06-05 15:09:43,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683890710] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:43,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:43,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 15:09:43,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462973435] [2021-06-05 15:09:43,825 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 15:09:43,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:43,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 15:09:43,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 15:09:43,825 INFO L87 Difference]: Start difference. First operand 9515 states and 28297 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:44,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:44,086 INFO L93 Difference]: Finished difference Result 14734 states and 43845 transitions. [2021-06-05 15:09:44,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 15:09:44,087 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:44,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:44,114 INFO L225 Difference]: With dead ends: 14734 [2021-06-05 15:09:44,114 INFO L226 Difference]: Without dead ends: 14686 [2021-06-05 15:09:44,115 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 40.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 15:09:44,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14686 states. [2021-06-05 15:09:44,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14686 to 9376. [2021-06-05 15:09:44,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9376 states, 9375 states have (on average 2.9634133333333335) internal successors, (27782), 9375 states have internal predecessors, (27782), 0 states have call successors, (0), 0 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 15:09:44,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9376 states to 9376 states and 27782 transitions. [2021-06-05 15:09:44,281 INFO L78 Accepts]: Start accepts. Automaton has 9376 states and 27782 transitions. Word has length 39 [2021-06-05 15:09:44,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:44,281 INFO L482 AbstractCegarLoop]: Abstraction has 9376 states and 27782 transitions. [2021-06-05 15:09:44,281 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:44,281 INFO L276 IsEmpty]: Start isEmpty. Operand 9376 states and 27782 transitions. [2021-06-05 15:09:44,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:44,291 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:44,291 INFO L521 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] [2021-06-05 15:09:44,291 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-05 15:09:44,291 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:44,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:44,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1133062906, now seen corresponding path program 35 times [2021-06-05 15:09:44,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:44,292 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515733416] [2021-06-05 15:09:44,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:44,335 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 15:09:44,335 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:44,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515733416] [2021-06-05 15:09:44,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515733416] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:44,335 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:44,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 15:09:44,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823526883] [2021-06-05 15:09:44,336 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 15:09:44,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:44,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 15:09:44,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-05 15:09:44,336 INFO L87 Difference]: Start difference. First operand 9376 states and 27782 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:44,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:44,611 INFO L93 Difference]: Finished difference Result 14599 states and 43322 transitions. [2021-06-05 15:09:44,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 15:09:44,619 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:44,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:44,645 INFO L225 Difference]: With dead ends: 14599 [2021-06-05 15:09:44,646 INFO L226 Difference]: Without dead ends: 14479 [2021-06-05 15:09:44,646 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 58.0ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-06-05 15:09:44,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14479 states. [2021-06-05 15:09:44,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14479 to 9268. [2021-06-05 15:09:44,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9268 states, 9267 states have (on average 2.9584547318441783) internal successors, (27416), 9267 states have internal predecessors, (27416), 0 states have call successors, (0), 0 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 15:09:44,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9268 states to 9268 states and 27416 transitions. [2021-06-05 15:09:44,854 INFO L78 Accepts]: Start accepts. Automaton has 9268 states and 27416 transitions. Word has length 39 [2021-06-05 15:09:44,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:44,854 INFO L482 AbstractCegarLoop]: Abstraction has 9268 states and 27416 transitions. [2021-06-05 15:09:44,854 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:44,854 INFO L276 IsEmpty]: Start isEmpty. Operand 9268 states and 27416 transitions. [2021-06-05 15:09:44,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:44,863 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:44,863 INFO L521 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] [2021-06-05 15:09:44,864 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-05 15:09:44,864 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:44,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:44,864 INFO L82 PathProgramCache]: Analyzing trace with hash -545879528, now seen corresponding path program 36 times [2021-06-05 15:09:44,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:44,864 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575884295] [2021-06-05 15:09:44,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:44,915 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 15:09:44,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:44,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575884295] [2021-06-05 15:09:44,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575884295] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:44,916 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:44,916 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 15:09:44,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683567196] [2021-06-05 15:09:44,916 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 15:09:44,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:44,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 15:09:44,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-05 15:09:44,917 INFO L87 Difference]: Start difference. First operand 9268 states and 27416 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:45,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:45,276 INFO L93 Difference]: Finished difference Result 14208 states and 42268 transitions. [2021-06-05 15:09:45,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 15:09:45,277 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:45,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:45,296 INFO L225 Difference]: With dead ends: 14208 [2021-06-05 15:09:45,296 INFO L226 Difference]: Without dead ends: 14016 [2021-06-05 15:09:45,297 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 79.3ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-06-05 15:09:45,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14016 states. [2021-06-05 15:09:45,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14016 to 9164. [2021-06-05 15:09:45,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9164 states, 9163 states have (on average 2.960820691913129) internal successors, (27130), 9163 states have internal predecessors, (27130), 0 states have call successors, (0), 0 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 15:09:45,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9164 states to 9164 states and 27130 transitions. [2021-06-05 15:09:45,435 INFO L78 Accepts]: Start accepts. Automaton has 9164 states and 27130 transitions. Word has length 39 [2021-06-05 15:09:45,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:45,435 INFO L482 AbstractCegarLoop]: Abstraction has 9164 states and 27130 transitions. [2021-06-05 15:09:45,435 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:45,435 INFO L276 IsEmpty]: Start isEmpty. Operand 9164 states and 27130 transitions. [2021-06-05 15:09:45,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:45,445 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:45,445 INFO L521 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] [2021-06-05 15:09:45,445 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-05 15:09:45,445 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:45,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:45,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1948403812, now seen corresponding path program 37 times [2021-06-05 15:09:45,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:45,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973436901] [2021-06-05 15:09:45,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:45,500 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 15:09:45,500 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:45,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973436901] [2021-06-05 15:09:45,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973436901] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:45,500 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:45,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 15:09:45,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460140958] [2021-06-05 15:09:45,501 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 15:09:45,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:45,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 15:09:45,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 15:09:45,501 INFO L87 Difference]: Start difference. First operand 9164 states and 27130 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:45,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:45,853 INFO L93 Difference]: Finished difference Result 14134 states and 42012 transitions. [2021-06-05 15:09:45,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 15:09:45,853 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:45,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:45,873 INFO L225 Difference]: With dead ends: 14134 [2021-06-05 15:09:45,873 INFO L226 Difference]: Without dead ends: 13966 [2021-06-05 15:09:45,873 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 99.4ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-06-05 15:09:45,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13966 states. [2021-06-05 15:09:45,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13966 to 9158. [2021-06-05 15:09:45,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9158 states, 9157 states have (on average 2.9588293109096866) internal successors, (27094), 9157 states have internal predecessors, (27094), 0 states have call successors, (0), 0 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 15:09:46,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9158 states to 9158 states and 27094 transitions. [2021-06-05 15:09:46,008 INFO L78 Accepts]: Start accepts. Automaton has 9158 states and 27094 transitions. Word has length 39 [2021-06-05 15:09:46,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:46,008 INFO L482 AbstractCegarLoop]: Abstraction has 9158 states and 27094 transitions. [2021-06-05 15:09:46,008 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:46,008 INFO L276 IsEmpty]: Start isEmpty. Operand 9158 states and 27094 transitions. [2021-06-05 15:09:46,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:46,018 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:46,018 INFO L521 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] [2021-06-05 15:09:46,018 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-05 15:09:46,018 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:46,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:46,019 INFO L82 PathProgramCache]: Analyzing trace with hash -426772262, now seen corresponding path program 38 times [2021-06-05 15:09:46,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:46,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157334196] [2021-06-05 15:09:46,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:46,059 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 15:09:46,059 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:46,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157334196] [2021-06-05 15:09:46,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157334196] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:46,060 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:46,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 15:09:46,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49947044] [2021-06-05 15:09:46,061 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 15:09:46,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:46,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 15:09:46,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 15:09:46,062 INFO L87 Difference]: Start difference. First operand 9158 states and 27094 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:46,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:46,338 INFO L93 Difference]: Finished difference Result 14594 states and 43056 transitions. [2021-06-05 15:09:46,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 15:09:46,339 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:46,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:46,365 INFO L225 Difference]: With dead ends: 14594 [2021-06-05 15:09:46,366 INFO L226 Difference]: Without dead ends: 14466 [2021-06-05 15:09:46,366 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 38.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 15:09:46,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14466 states. [2021-06-05 15:09:46,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14466 to 9094. [2021-06-05 15:09:46,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9094 states, 9093 states have (on average 2.9493016606180578) internal successors, (26818), 9093 states have internal predecessors, (26818), 0 states have call successors, (0), 0 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 15:09:46,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9094 states to 9094 states and 26818 transitions. [2021-06-05 15:09:46,612 INFO L78 Accepts]: Start accepts. Automaton has 9094 states and 26818 transitions. Word has length 39 [2021-06-05 15:09:46,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:46,612 INFO L482 AbstractCegarLoop]: Abstraction has 9094 states and 26818 transitions. [2021-06-05 15:09:46,612 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:46,612 INFO L276 IsEmpty]: Start isEmpty. Operand 9094 states and 26818 transitions. [2021-06-05 15:09:46,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:46,622 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:46,622 INFO L521 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] [2021-06-05 15:09:46,622 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-05 15:09:46,622 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:46,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:46,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1978893530, now seen corresponding path program 39 times [2021-06-05 15:09:46,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:46,623 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829254290] [2021-06-05 15:09:46,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:46,665 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 15:09:46,665 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:46,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829254290] [2021-06-05 15:09:46,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829254290] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:46,665 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:46,665 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 15:09:46,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356014068] [2021-06-05 15:09:46,665 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 15:09:46,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:46,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 15:09:46,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-05 15:09:46,666 INFO L87 Difference]: Start difference. First operand 9094 states and 26818 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:46,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:46,941 INFO L93 Difference]: Finished difference Result 14494 states and 42702 transitions. [2021-06-05 15:09:46,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 15:09:46,942 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:46,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:46,961 INFO L225 Difference]: With dead ends: 14494 [2021-06-05 15:09:46,961 INFO L226 Difference]: Without dead ends: 14022 [2021-06-05 15:09:46,961 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 60.9ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-06-05 15:09:46,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14022 states. [2021-06-05 15:09:47,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14022 to 8890. [2021-06-05 15:09:47,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8890 states, 8889 states have (on average 2.937338283271459) internal successors, (26110), 8889 states have internal predecessors, (26110), 0 states have call successors, (0), 0 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 15:09:47,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8890 states to 8890 states and 26110 transitions. [2021-06-05 15:09:47,095 INFO L78 Accepts]: Start accepts. Automaton has 8890 states and 26110 transitions. Word has length 39 [2021-06-05 15:09:47,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:47,095 INFO L482 AbstractCegarLoop]: Abstraction has 8890 states and 26110 transitions. [2021-06-05 15:09:47,095 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:47,095 INFO L276 IsEmpty]: Start isEmpty. Operand 8890 states and 26110 transitions. [2021-06-05 15:09:47,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:47,105 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:47,105 INFO L521 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] [2021-06-05 15:09:47,105 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-05 15:09:47,105 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:47,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:47,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1231907832, now seen corresponding path program 40 times [2021-06-05 15:09:47,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:47,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751221640] [2021-06-05 15:09:47,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:47,159 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 15:09:47,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:47,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751221640] [2021-06-05 15:09:47,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751221640] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:47,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:47,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 15:09:47,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272582925] [2021-06-05 15:09:47,159 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 15:09:47,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:47,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 15:09:47,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-05 15:09:47,160 INFO L87 Difference]: Start difference. First operand 8890 states and 26110 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:47,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:47,461 INFO L93 Difference]: Finished difference Result 14086 states and 41514 transitions. [2021-06-05 15:09:47,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 15:09:47,462 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:47,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:47,480 INFO L225 Difference]: With dead ends: 14086 [2021-06-05 15:09:47,480 INFO L226 Difference]: Without dead ends: 13386 [2021-06-05 15:09:47,480 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 78.1ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-06-05 15:09:47,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13386 states. [2021-06-05 15:09:47,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13386 to 8674. [2021-06-05 15:09:47,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8674 states, 8673 states have (on average 2.945462930935086) internal successors, (25546), 8673 states have internal predecessors, (25546), 0 states have call successors, (0), 0 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 15:09:47,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8674 states to 8674 states and 25546 transitions. [2021-06-05 15:09:47,609 INFO L78 Accepts]: Start accepts. Automaton has 8674 states and 25546 transitions. Word has length 39 [2021-06-05 15:09:47,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:47,609 INFO L482 AbstractCegarLoop]: Abstraction has 8674 states and 25546 transitions. [2021-06-05 15:09:47,609 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:47,609 INFO L276 IsEmpty]: Start isEmpty. Operand 8674 states and 25546 transitions. [2021-06-05 15:09:47,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:47,618 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:47,618 INFO L521 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] [2021-06-05 15:09:47,618 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-05 15:09:47,618 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:47,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:47,619 INFO L82 PathProgramCache]: Analyzing trace with hash 64823676, now seen corresponding path program 41 times [2021-06-05 15:09:47,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:47,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720816128] [2021-06-05 15:09:47,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:47,669 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 15:09:47,669 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:47,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720816128] [2021-06-05 15:09:47,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720816128] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:47,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:47,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 15:09:47,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254625209] [2021-06-05 15:09:47,670 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 15:09:47,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:47,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 15:09:47,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 15:09:47,670 INFO L87 Difference]: Start difference. First operand 8674 states and 25546 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:48,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:48,033 INFO L93 Difference]: Finished difference Result 13828 states and 40806 transitions. [2021-06-05 15:09:48,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 15:09:48,034 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:48,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:48,053 INFO L225 Difference]: With dead ends: 13828 [2021-06-05 15:09:48,054 INFO L226 Difference]: Without dead ends: 13182 [2021-06-05 15:09:48,054 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 101.6ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-06-05 15:09:48,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13182 states. [2021-06-05 15:09:48,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13182 to 8470. [2021-06-05 15:09:48,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8470 states, 8469 states have (on average 2.964694769158106) internal successors, (25108), 8469 states have internal predecessors, (25108), 0 states have call successors, (0), 0 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 15:09:48,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8470 states to 8470 states and 25108 transitions. [2021-06-05 15:09:48,178 INFO L78 Accepts]: Start accepts. Automaton has 8470 states and 25108 transitions. Word has length 39 [2021-06-05 15:09:48,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:48,178 INFO L482 AbstractCegarLoop]: Abstraction has 8470 states and 25108 transitions. [2021-06-05 15:09:48,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:48,178 INFO L276 IsEmpty]: Start isEmpty. Operand 8470 states and 25108 transitions. [2021-06-05 15:09:48,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:48,187 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:48,187 INFO L521 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] [2021-06-05 15:09:48,187 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-05 15:09:48,188 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:48,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:48,188 INFO L82 PathProgramCache]: Analyzing trace with hash -695140544, now seen corresponding path program 42 times [2021-06-05 15:09:48,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:48,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441857902] [2021-06-05 15:09:48,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:48,243 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 15:09:48,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:48,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441857902] [2021-06-05 15:09:48,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441857902] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:48,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:48,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 15:09:48,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865586556] [2021-06-05 15:09:48,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 15:09:48,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:48,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 15:09:48,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 15:09:48,244 INFO L87 Difference]: Start difference. First operand 8470 states and 25108 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:48,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:48,628 INFO L93 Difference]: Finished difference Result 13371 states and 39611 transitions. [2021-06-05 15:09:48,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 15:09:48,629 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:48,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:48,648 INFO L225 Difference]: With dead ends: 13371 [2021-06-05 15:09:48,648 INFO L226 Difference]: Without dead ends: 12735 [2021-06-05 15:09:48,648 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 104.9ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-06-05 15:09:48,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12735 states. [2021-06-05 15:09:48,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12735 to 7590. [2021-06-05 15:09:48,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7590 states, 7589 states have (on average 2.960469100013177) internal successors, (22467), 7589 states have internal predecessors, (22467), 0 states have call successors, (0), 0 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 15:09:48,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7590 states to 7590 states and 22467 transitions. [2021-06-05 15:09:48,762 INFO L78 Accepts]: Start accepts. Automaton has 7590 states and 22467 transitions. Word has length 39 [2021-06-05 15:09:48,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:48,762 INFO L482 AbstractCegarLoop]: Abstraction has 7590 states and 22467 transitions. [2021-06-05 15:09:48,762 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:48,762 INFO L276 IsEmpty]: Start isEmpty. Operand 7590 states and 22467 transitions. [2021-06-05 15:09:48,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:48,773 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:48,773 INFO L521 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] [2021-06-05 15:09:48,773 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-05 15:09:48,774 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:48,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:48,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1794340302, now seen corresponding path program 43 times [2021-06-05 15:09:48,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:48,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307601321] [2021-06-05 15:09:48,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:48,862 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 15:09:48,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:48,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307601321] [2021-06-05 15:09:48,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307601321] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:48,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:48,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 15:09:48,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094630176] [2021-06-05 15:09:48,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 15:09:48,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:48,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 15:09:48,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-05 15:09:48,864 INFO L87 Difference]: Start difference. First operand 7590 states and 22467 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:49,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:49,207 INFO L93 Difference]: Finished difference Result 12745 states and 37674 transitions. [2021-06-05 15:09:49,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 15:09:49,208 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:49,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:49,226 INFO L225 Difference]: With dead ends: 12745 [2021-06-05 15:09:49,226 INFO L226 Difference]: Without dead ends: 12601 [2021-06-05 15:09:49,226 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 70.6ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-06-05 15:09:49,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12601 states. [2021-06-05 15:09:49,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12601 to 7346. [2021-06-05 15:09:49,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7346 states, 7345 states have (on average 2.9400953029271615) internal successors, (21595), 7345 states have internal predecessors, (21595), 0 states have call successors, (0), 0 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 15:09:49,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7346 states to 7346 states and 21595 transitions. [2021-06-05 15:09:49,338 INFO L78 Accepts]: Start accepts. Automaton has 7346 states and 21595 transitions. Word has length 39 [2021-06-05 15:09:49,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:49,338 INFO L482 AbstractCegarLoop]: Abstraction has 7346 states and 21595 transitions. [2021-06-05 15:09:49,338 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:49,339 INFO L276 IsEmpty]: Start isEmpty. Operand 7346 states and 21595 transitions. [2021-06-05 15:09:49,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:49,347 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:49,347 INFO L521 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] [2021-06-05 15:09:49,347 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-05 15:09:49,347 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:49,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:49,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1613437490, now seen corresponding path program 44 times [2021-06-05 15:09:49,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:49,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229722959] [2021-06-05 15:09:49,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:49,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:09:49,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:49,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229722959] [2021-06-05 15:09:49,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229722959] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:49,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:49,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 15:09:49,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130544855] [2021-06-05 15:09:49,398 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 15:09:49,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:49,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 15:09:49,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-05 15:09:49,398 INFO L87 Difference]: Start difference. First operand 7346 states and 21595 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:49,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:49,705 INFO L93 Difference]: Finished difference Result 11821 states and 34814 transitions. [2021-06-05 15:09:49,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 15:09:49,706 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:49,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:49,721 INFO L225 Difference]: With dead ends: 11821 [2021-06-05 15:09:49,722 INFO L226 Difference]: Without dead ends: 11629 [2021-06-05 15:09:49,722 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 66.7ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-06-05 15:09:49,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11629 states. [2021-06-05 15:09:49,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11629 to 7242. [2021-06-05 15:09:49,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7242 states, 7241 states have (on average 2.9428255765778206) internal successors, (21309), 7241 states have internal predecessors, (21309), 0 states have call successors, (0), 0 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 15:09:49,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7242 states to 7242 states and 21309 transitions. [2021-06-05 15:09:49,826 INFO L78 Accepts]: Start accepts. Automaton has 7242 states and 21309 transitions. Word has length 39 [2021-06-05 15:09:49,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:49,826 INFO L482 AbstractCegarLoop]: Abstraction has 7242 states and 21309 transitions. [2021-06-05 15:09:49,826 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:49,826 INFO L276 IsEmpty]: Start isEmpty. Operand 7242 states and 21309 transitions. [2021-06-05 15:09:49,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:49,834 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:49,834 INFO L521 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] [2021-06-05 15:09:49,834 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-05 15:09:49,834 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:49,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:49,834 INFO L82 PathProgramCache]: Analyzing trace with hash -798629012, now seen corresponding path program 45 times [2021-06-05 15:09:49,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:49,835 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945033637] [2021-06-05 15:09:49,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:49,897 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 15:09:49,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:49,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945033637] [2021-06-05 15:09:49,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945033637] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:49,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:49,898 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 15:09:49,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492032704] [2021-06-05 15:09:49,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 15:09:49,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:49,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 15:09:49,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 15:09:49,898 INFO L87 Difference]: Start difference. First operand 7242 states and 21309 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:50,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:50,275 INFO L93 Difference]: Finished difference Result 11315 states and 33296 transitions. [2021-06-05 15:09:50,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 15:09:50,276 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:50,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:50,290 INFO L225 Difference]: With dead ends: 11315 [2021-06-05 15:09:50,290 INFO L226 Difference]: Without dead ends: 11099 [2021-06-05 15:09:50,291 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 105.9ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-06-05 15:09:50,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11099 states. [2021-06-05 15:09:50,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11099 to 7008. [2021-06-05 15:09:50,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7008 states, 7007 states have (on average 2.97445411731126) internal successors, (20842), 7007 states have internal predecessors, (20842), 0 states have call successors, (0), 0 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 15:09:50,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7008 states to 7008 states and 20842 transitions. [2021-06-05 15:09:50,393 INFO L78 Accepts]: Start accepts. Automaton has 7008 states and 20842 transitions. Word has length 39 [2021-06-05 15:09:50,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:50,393 INFO L482 AbstractCegarLoop]: Abstraction has 7008 states and 20842 transitions. [2021-06-05 15:09:50,393 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:50,393 INFO L276 IsEmpty]: Start isEmpty. Operand 7008 states and 20842 transitions. [2021-06-05 15:09:50,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:50,400 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:50,401 INFO L521 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] [2021-06-05 15:09:50,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-05 15:09:50,401 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:50,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:50,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1518942532, now seen corresponding path program 46 times [2021-06-05 15:09:50,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:50,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025310356] [2021-06-05 15:09:50,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:50,426 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 15:09:50,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:50,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025310356] [2021-06-05 15:09:50,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025310356] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:50,426 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:50,426 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 15:09:50,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306235888] [2021-06-05 15:09:50,426 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 15:09:50,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:50,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 15:09:50,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 15:09:50,427 INFO L87 Difference]: Start difference. First operand 7008 states and 20842 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:50,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:50,537 INFO L93 Difference]: Finished difference Result 9444 states and 26929 transitions. [2021-06-05 15:09:50,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 15:09:50,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:50,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:50,552 INFO L225 Difference]: With dead ends: 9444 [2021-06-05 15:09:50,552 INFO L226 Difference]: Without dead ends: 8824 [2021-06-05 15:09:50,553 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.7ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-06-05 15:09:50,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8824 states. [2021-06-05 15:09:50,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8824 to 4125. [2021-06-05 15:09:50,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4125 states, 4124 states have (on average 2.908341416100873) internal successors, (11994), 4124 states have internal predecessors, (11994), 0 states have call successors, (0), 0 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 15:09:50,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4125 states to 4125 states and 11994 transitions. [2021-06-05 15:09:50,648 INFO L78 Accepts]: Start accepts. Automaton has 4125 states and 11994 transitions. Word has length 39 [2021-06-05 15:09:50,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:50,648 INFO L482 AbstractCegarLoop]: Abstraction has 4125 states and 11994 transitions. [2021-06-05 15:09:50,648 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:50,648 INFO L276 IsEmpty]: Start isEmpty. Operand 4125 states and 11994 transitions. [2021-06-05 15:09:50,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:50,654 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:50,654 INFO L521 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] [2021-06-05 15:09:50,654 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-05 15:09:50,654 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:50,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:50,654 INFO L82 PathProgramCache]: Analyzing trace with hash -236999486, now seen corresponding path program 47 times [2021-06-05 15:09:50,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:50,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644755500] [2021-06-05 15:09:50,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:50,695 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 15:09:50,695 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:50,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644755500] [2021-06-05 15:09:50,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644755500] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:50,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:50,696 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 15:09:50,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59491336] [2021-06-05 15:09:50,696 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 15:09:50,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:50,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 15:09:50,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 15:09:50,697 INFO L87 Difference]: Start difference. First operand 4125 states and 11994 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:50,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:50,865 INFO L93 Difference]: Finished difference Result 6107 states and 16719 transitions. [2021-06-05 15:09:50,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 15:09:50,869 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:50,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:50,874 INFO L225 Difference]: With dead ends: 6107 [2021-06-05 15:09:50,875 INFO L226 Difference]: Without dead ends: 4693 [2021-06-05 15:09:50,875 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 40.1ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 15:09:50,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4693 states. [2021-06-05 15:09:50,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4693 to 2542. [2021-06-05 15:09:50,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2542 states, 2541 states have (on average 2.786698150334514) internal successors, (7081), 2541 states have internal predecessors, (7081), 0 states have call successors, (0), 0 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 15:09:50,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 7081 transitions. [2021-06-05 15:09:50,908 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 7081 transitions. Word has length 39 [2021-06-05 15:09:50,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:50,908 INFO L482 AbstractCegarLoop]: Abstraction has 2542 states and 7081 transitions. [2021-06-05 15:09:50,908 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:50,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 7081 transitions. [2021-06-05 15:09:50,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:50,910 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:50,910 INFO L521 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] [2021-06-05 15:09:50,910 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-05 15:09:50,910 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:50,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:50,910 INFO L82 PathProgramCache]: Analyzing trace with hash -634778652, now seen corresponding path program 48 times [2021-06-05 15:09:50,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:50,911 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848519782] [2021-06-05 15:09:50,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:50,957 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 15:09:50,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:50,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848519782] [2021-06-05 15:09:50,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848519782] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:50,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:50,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 15:09:50,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138607140] [2021-06-05 15:09:50,958 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 15:09:50,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:50,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 15:09:50,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-05 15:09:50,958 INFO L87 Difference]: Start difference. First operand 2542 states and 7081 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:51,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:51,144 INFO L93 Difference]: Finished difference Result 1862 states and 4307 transitions. [2021-06-05 15:09:51,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 15:09:51,144 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:51,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:51,145 INFO L225 Difference]: With dead ends: 1862 [2021-06-05 15:09:51,145 INFO L226 Difference]: Without dead ends: 648 [2021-06-05 15:09:51,145 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 68.7ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-05 15:09:51,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-06-05 15:09:51,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 456. [2021-06-05 15:09:51,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 2.4329670329670328) internal successors, (1107), 455 states have internal predecessors, (1107), 0 states have call successors, (0), 0 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 15:09:51,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1107 transitions. [2021-06-05 15:09:51,150 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1107 transitions. Word has length 39 [2021-06-05 15:09:51,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:51,150 INFO L482 AbstractCegarLoop]: Abstraction has 456 states and 1107 transitions. [2021-06-05 15:09:51,150 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:51,150 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1107 transitions. [2021-06-05 15:09:51,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 15:09:51,151 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:09:51,151 INFO L521 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] [2021-06-05 15:09:51,151 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-06-05 15:09:51,151 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:09:51,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:09:51,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1819342244, now seen corresponding path program 49 times [2021-06-05 15:09:51,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:09:51,151 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96267431] [2021-06-05 15:09:51,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:09:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:09:51,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:09:51,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:09:51,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96267431] [2021-06-05 15:09:51,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96267431] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:09:51,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:09:51,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 15:09:51,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833937758] [2021-06-05 15:09:51,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 15:09:51,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:09:51,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 15:09:51,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 15:09:51,206 INFO L87 Difference]: Start difference. First operand 456 states and 1107 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:51,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:09:51,383 INFO L93 Difference]: Finished difference Result 391 states and 811 transitions. [2021-06-05 15:09:51,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 15:09:51,383 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-06-05 15:09:51,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:09:51,383 INFO L225 Difference]: With dead ends: 391 [2021-06-05 15:09:51,383 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 15:09:51,383 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 97.1ms TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-06-05 15:09:51,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 15:09:51,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 15:09:51,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 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 15:09:51,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 15:09:51,384 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2021-06-05 15:09:51,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:09:51,384 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 15:09:51,384 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 15:09:51,384 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 15:09:51,384 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 15:09:51,384 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-06-05 15:09:51,385 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 15:09:51,387 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 03:09:51 BasicIcfg [2021-06-05 15:09:51,387 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 15:09:51,388 INFO L168 Benchmark]: Toolchain (without parser) took 48802.50 ms. Allocated memory was 343.9 MB in the beginning and 14.6 GB in the end (delta: 14.3 GB). Free memory was 323.5 MB in the beginning and 10.5 GB in the end (delta: -10.2 GB). Peak memory consumption was 4.1 GB. Max. memory is 16.0 GB. [2021-06-05 15:09:51,388 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.14 ms. Allocated memory is still 343.9 MB. Free memory was 324.7 MB in the beginning and 324.6 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 15:09:51,388 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.34 ms. Allocated memory is still 343.9 MB. Free memory was 323.4 MB in the beginning and 322.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 15:09:51,388 INFO L168 Benchmark]: Boogie Preprocessor took 14.44 ms. Allocated memory is still 343.9 MB. Free memory was 322.0 MB in the beginning and 321.0 MB in the end (delta: 988.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 15:09:51,388 INFO L168 Benchmark]: RCFGBuilder took 245.08 ms. Allocated memory is still 343.9 MB. Free memory was 320.9 MB in the beginning and 305.8 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-06-05 15:09:51,388 INFO L168 Benchmark]: TraceAbstraction took 48506.39 ms. Allocated memory was 343.9 MB in the beginning and 14.6 GB in the end (delta: 14.3 GB). Free memory was 305.3 MB in the beginning and 10.5 GB in the end (delta: -10.2 GB). Peak memory consumption was 4.1 GB. Max. memory is 16.0 GB. [2021-06-05 15:09:51,389 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 0.14 ms. Allocated memory is still 343.9 MB. Free memory was 324.7 MB in the beginning and 324.6 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 29.34 ms. Allocated memory is still 343.9 MB. Free memory was 323.4 MB in the beginning and 322.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.44 ms. Allocated memory is still 343.9 MB. Free memory was 322.0 MB in the beginning and 321.0 MB in the end (delta: 988.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 245.08 ms. Allocated memory is still 343.9 MB. Free memory was 320.9 MB in the beginning and 305.8 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 48506.39 ms. Allocated memory was 343.9 MB in the beginning and 14.6 GB in the end (delta: 14.3 GB). Free memory was 305.3 MB in the beginning and 10.5 GB in the end (delta: -10.2 GB). Peak memory consumption was 4.1 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 95]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 11 procedures, 83 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 48401.3ms, OverallIterations: 49, TraceHistogramMax: 1, EmptinessCheckTime: 1777.3ms, AutomataDifference: 20303.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1398.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3808 SDtfs, 5398 SDslu, 13350 SDs, 0 SdLazy, 14188 SolverSat, 2216 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6514.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 608 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 478 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 2524.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28621occurred in iteration=13, InterpolantAutomatonStates: 480, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 21889.3ms AutomataMinimizationTime, 49 MinimizatonAttempts, 461380 StatesRemovedByMinimization, 46 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 63.2ms SsaConstructionTime, 278.4ms SatisfiabilityAnalysisTime, 2378.6ms InterpolantComputationTime, 1911 NumberOfCodeBlocks, 1911 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 1862 ConstructedInterpolants, 0 QuantifiedInterpolants, 5436 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 49 InterpolantComputations, 49 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...