/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-12 20:40:58,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-12 20:40:58,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-12 20:40:58,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-12 20:40:58,729 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-12 20:40:58,769 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-12 20:40:58,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-12 20:40:58,770 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-12 20:40:58,770 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-12 20:40:58,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-12 20:40:58,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-12 20:40:58,773 INFO L138 SettingsManager]: * Use SBE=true [2021-06-12 20:40:58,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-12 20:40:58,774 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-12 20:40:58,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-12 20:40:58,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-12 20:40:58,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-12 20:40:58,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-12 20:40:58,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-12 20:40:58,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-12 20:40:58,775 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-12 20:40:58,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-12 20:40:58,776 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-12 20:40:58,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-12 20:40:58,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-12 20:40:58,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-12 20:40:58,776 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-12 20:40:58,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-12 20:40:58,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 20:40:58,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-12 20:40:58,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-12 20:40:58,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-12 20:40:58,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-12 20:40:58,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-12 20:40:58,778 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-12 20:40:58,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-12 20:40:58,778 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-12 20:40:59,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-12 20:40:59,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-12 20:40:59,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-12 20:40:59,124 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-12 20:40:59,125 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-12 20:40:59,125 INFO L432 ainManager$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 [2021-06-12 20:40:59,126 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl' [2021-06-12 20:40:59,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-12 20:40:59,156 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-12 20:40:59,158 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-12 20:40:59,158 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-12 20:40:59,158 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-12 20:40:59,169 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 12.06 08:40:59" (1/1) ... [2021-06-12 20:40:59,177 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 12.06 08:40:59" (1/1) ... [2021-06-12 20:40:59,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-12 20:40:59,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-12 20:40:59,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-12 20:40:59,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-12 20:40:59,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:40:59" (1/1) ... [2021-06-12 20:40:59,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:40:59" (1/1) ... [2021-06-12 20:40:59,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:40:59" (1/1) ... [2021-06-12 20:40:59,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:40:59" (1/1) ... [2021-06-12 20:40:59,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:40:59" (1/1) ... [2021-06-12 20:40:59,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:40:59" (1/1) ... [2021-06-12 20:40:59,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:40:59" (1/1) ... [2021-06-12 20:40:59,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-12 20:40:59,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-12 20:40:59,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-12 20:40:59,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-12 20:40:59,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:40:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 20:40:59,278 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-12 20:40:59,279 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-12 20:40:59,279 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-12 20:40:59,279 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-12 20:40:59,279 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-12 20:40:59,279 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-12 20:40:59,279 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-12 20:40:59,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-12 20:40:59,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-12 20:40:59,280 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-12 20:40:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-12 20:40:59,280 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-12 20:40:59,280 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-12 20:40:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-12 20:40:59,280 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-12 20:40:59,281 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-06-12 20:40:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-06-12 20:40:59,281 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-06-12 20:40:59,282 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-12 20:40:59,492 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-12 20:40:59,492 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-12 20:40:59,494 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 08:40:59 BoogieIcfgContainer [2021-06-12 20:40:59,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-12 20:40:59,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-12 20:40:59,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-12 20:40:59,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-12 20:40:59,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:40:59" (1/2) ... [2021-06-12 20:40:59,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597da56d and model type ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 08:40:59, skipping insertion in model container [2021-06-12 20:40:59,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 08:40:59" (2/2) ... [2021-06-12 20:40:59,500 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-5.wvr.bpl [2021-06-12 20:40:59,505 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-12 20:40:59,505 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-12 20:40:59,506 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-12 20:40:59,506 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-12 20:40:59,597 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-06-12 20:40:59,632 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-06-12 20:40:59,656 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 20:40:59,659 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 20:40:59,659 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 20:40:59,659 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 20:40:59,659 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 20:40:59,659 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 20:40:59,659 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 20:40:59,659 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-12 20:40:59,675 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 46 transitions, 132 flow [2021-06-12 20:41:00,458 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) [2021-06-12 20:41:00,495 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) [2021-06-12 20:41:00,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:00,702 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:00,703 INFO L472 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] [2021-06-12 20:41:00,703 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:00,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:00,711 INFO L82 PathProgramCache]: Analyzing trace with hash -158356636, now seen corresponding path program 1 times [2021-06-12 20:41:00,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:00,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765402407] [2021-06-12 20:41:00,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:01,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:01,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:01,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765402407] [2021-06-12 20:41:01,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765402407] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:01,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:01,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-12 20:41:01,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898642508] [2021-06-12 20:41:01,009 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-12 20:41:01,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:01,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-12 20:41:01,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-12 20:41:01,046 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) [2021-06-12 20:41:01,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:01,379 INFO L93 Difference]: Finished difference Result 19654 states and 81351 transitions. [2021-06-12 20:41:01,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-12 20:41:01,381 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 [2021-06-12 20:41:01,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:01,573 INFO L225 Difference]: With dead ends: 19654 [2021-06-12 20:41:01,573 INFO L226 Difference]: Without dead ends: 13110 [2021-06-12 20:41:01,575 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 44.6ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-12 20:41:01,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13110 states. [2021-06-12 20:41:02,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13110 to 13110. [2021-06-12 20:41:02,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13110 states, 13109 states have (on average 4.060035090395911) internal successors, (53223), 13109 states have internal predecessors, (53223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:02,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13110 states to 13110 states and 53223 transitions. [2021-06-12 20:41:02,389 INFO L78 Accepts]: Start accepts. Automaton has 13110 states and 53223 transitions. Word has length 39 [2021-06-12 20:41:02,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:02,390 INFO L482 AbstractCegarLoop]: Abstraction has 13110 states and 53223 transitions. [2021-06-12 20:41:02,391 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) [2021-06-12 20:41:02,391 INFO L276 IsEmpty]: Start isEmpty. Operand 13110 states and 53223 transitions. [2021-06-12 20:41:02,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:02,439 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:02,439 INFO L472 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] [2021-06-12 20:41:02,440 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-12 20:41:02,440 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:02,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:02,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1270525438, now seen corresponding path program 2 times [2021-06-12 20:41:02,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:02,444 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351861016] [2021-06-12 20:41:02,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:02,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:02,526 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:02,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351861016] [2021-06-12 20:41:02,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351861016] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:02,526 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:02,526 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-12 20:41:02,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048730372] [2021-06-12 20:41:02,529 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-12 20:41:02,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:02,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-12 20:41:02,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-12 20:41:02,533 INFO L87 Difference]: Start difference. First operand 13110 states and 53223 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) [2021-06-12 20:41:02,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:02,921 INFO L93 Difference]: Finished difference Result 13536 states and 54819 transitions. [2021-06-12 20:41:02,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-12 20:41:02,937 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 [2021-06-12 20:41:02,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:03,062 INFO L225 Difference]: With dead ends: 13536 [2021-06-12 20:41:03,062 INFO L226 Difference]: Without dead ends: 13536 [2021-06-12 20:41:03,063 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-12 20:41:03,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13536 states. [2021-06-12 20:41:03,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13536 to 13536. [2021-06-12 20:41:03,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13536 states, 13535 states have (on average 4.050166235685261) internal successors, (54819), 13535 states have internal predecessors, (54819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:03,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13536 states to 13536 states and 54819 transitions. [2021-06-12 20:41:03,722 INFO L78 Accepts]: Start accepts. Automaton has 13536 states and 54819 transitions. Word has length 39 [2021-06-12 20:41:03,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:03,722 INFO L482 AbstractCegarLoop]: Abstraction has 13536 states and 54819 transitions. [2021-06-12 20:41:03,722 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) [2021-06-12 20:41:03,722 INFO L276 IsEmpty]: Start isEmpty. Operand 13536 states and 54819 transitions. [2021-06-12 20:41:03,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:03,779 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:03,779 INFO L472 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] [2021-06-12 20:41:03,779 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-12 20:41:03,780 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:03,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:03,780 INFO L82 PathProgramCache]: Analyzing trace with hash -944687490, now seen corresponding path program 3 times [2021-06-12 20:41:03,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:03,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794821737] [2021-06-12 20:41:03,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:03,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:03,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:03,852 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:03,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794821737] [2021-06-12 20:41:03,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794821737] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:03,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:03,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-12 20:41:03,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809919691] [2021-06-12 20:41:03,854 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 20:41:03,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:03,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 20:41:03,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-12 20:41:03,857 INFO L87 Difference]: Start difference. First operand 13536 states and 54819 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) [2021-06-12 20:41:04,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:04,382 INFO L93 Difference]: Finished difference Result 33455 states and 133148 transitions. [2021-06-12 20:41:04,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-12 20:41:04,383 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 [2021-06-12 20:41:04,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:04,560 INFO L225 Difference]: With dead ends: 33455 [2021-06-12 20:41:04,561 INFO L226 Difference]: Without dead ends: 33455 [2021-06-12 20:41:04,561 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 27.0ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:41:04,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33455 states. [2021-06-12 20:41:05,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33455 to 16657. [2021-06-12 20:41:05,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16657 states, 16656 states have (on average 4.000540345821325) internal successors, (66633), 16656 states have internal predecessors, (66633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:05,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16657 states to 16657 states and 66633 transitions. [2021-06-12 20:41:05,563 INFO L78 Accepts]: Start accepts. Automaton has 16657 states and 66633 transitions. Word has length 39 [2021-06-12 20:41:05,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:05,563 INFO L482 AbstractCegarLoop]: Abstraction has 16657 states and 66633 transitions. [2021-06-12 20:41:05,563 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) [2021-06-12 20:41:05,564 INFO L276 IsEmpty]: Start isEmpty. Operand 16657 states and 66633 transitions. [2021-06-12 20:41:05,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:05,607 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:05,607 INFO L472 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] [2021-06-12 20:41:05,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-12 20:41:05,608 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:05,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:05,608 INFO L82 PathProgramCache]: Analyzing trace with hash -696461990, now seen corresponding path program 4 times [2021-06-12 20:41:05,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:05,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572988657] [2021-06-12 20:41:05,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:05,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:05,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:05,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572988657] [2021-06-12 20:41:05,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572988657] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:05,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:05,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 20:41:05,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852743266] [2021-06-12 20:41:05,684 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 20:41:05,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:05,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 20:41:05,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:41:05,685 INFO L87 Difference]: Start difference. First operand 16657 states and 66633 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) [2021-06-12 20:41:06,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:06,169 INFO L93 Difference]: Finished difference Result 35904 states and 141978 transitions. [2021-06-12 20:41:06,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-12 20:41:06,170 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 [2021-06-12 20:41:06,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:06,296 INFO L225 Difference]: With dead ends: 35904 [2021-06-12 20:41:06,297 INFO L226 Difference]: Without dead ends: 35904 [2021-06-12 20:41:06,297 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 24.5ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:41:06,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35904 states. [2021-06-12 20:41:07,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35904 to 18510. [2021-06-12 20:41:07,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18510 states, 18509 states have (on average 3.9846020854719324) internal successors, (73751), 18509 states have internal predecessors, (73751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:07,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18510 states to 18510 states and 73751 transitions. [2021-06-12 20:41:07,282 INFO L78 Accepts]: Start accepts. Automaton has 18510 states and 73751 transitions. Word has length 39 [2021-06-12 20:41:07,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:07,283 INFO L482 AbstractCegarLoop]: Abstraction has 18510 states and 73751 transitions. [2021-06-12 20:41:07,283 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) [2021-06-12 20:41:07,283 INFO L276 IsEmpty]: Start isEmpty. Operand 18510 states and 73751 transitions. [2021-06-12 20:41:07,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:07,326 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:07,326 INFO L472 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] [2021-06-12 20:41:07,326 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-12 20:41:07,326 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:07,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:07,327 INFO L82 PathProgramCache]: Analyzing trace with hash 2051249156, now seen corresponding path program 5 times [2021-06-12 20:41:07,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:07,327 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237924872] [2021-06-12 20:41:07,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:07,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:07,376 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:07,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237924872] [2021-06-12 20:41:07,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237924872] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:07,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:07,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 20:41:07,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526370205] [2021-06-12 20:41:07,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 20:41:07,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:07,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 20:41:07,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:41:07,377 INFO L87 Difference]: Start difference. First operand 18510 states and 73751 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) [2021-06-12 20:41:07,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:07,729 INFO L93 Difference]: Finished difference Result 31750 states and 125094 transitions. [2021-06-12 20:41:07,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 20:41:07,730 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 [2021-06-12 20:41:07,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:08,023 INFO L225 Difference]: With dead ends: 31750 [2021-06-12 20:41:08,023 INFO L226 Difference]: Without dead ends: 31744 [2021-06-12 20:41:08,023 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 28.9ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:41:08,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31744 states. [2021-06-12 20:41:08,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31744 to 18770. [2021-06-12 20:41:08,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18770 states, 18769 states have (on average 3.9722414619851882) internal successors, (74555), 18769 states have internal predecessors, (74555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:08,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18770 states to 18770 states and 74555 transitions. [2021-06-12 20:41:08,704 INFO L78 Accepts]: Start accepts. Automaton has 18770 states and 74555 transitions. Word has length 39 [2021-06-12 20:41:08,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:08,704 INFO L482 AbstractCegarLoop]: Abstraction has 18770 states and 74555 transitions. [2021-06-12 20:41:08,705 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) [2021-06-12 20:41:08,705 INFO L276 IsEmpty]: Start isEmpty. Operand 18770 states and 74555 transitions. [2021-06-12 20:41:08,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:08,740 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:08,740 INFO L472 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] [2021-06-12 20:41:08,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-12 20:41:08,741 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:08,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:08,741 INFO L82 PathProgramCache]: Analyzing trace with hash -456932626, now seen corresponding path program 6 times [2021-06-12 20:41:08,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:08,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39071983] [2021-06-12 20:41:08,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:08,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:08,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39071983] [2021-06-12 20:41:08,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39071983] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:08,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:08,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 20:41:08,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727010882] [2021-06-12 20:41:08,792 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 20:41:08,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:08,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 20:41:08,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:41:08,793 INFO L87 Difference]: Start difference. First operand 18770 states and 74555 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) [2021-06-12 20:41:09,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:09,337 INFO L93 Difference]: Finished difference Result 36650 states and 143630 transitions. [2021-06-12 20:41:09,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-12 20:41:09,338 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 [2021-06-12 20:41:09,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:09,482 INFO L225 Difference]: With dead ends: 36650 [2021-06-12 20:41:09,482 INFO L226 Difference]: Without dead ends: 36632 [2021-06-12 20:41:09,482 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 34.3ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:41:09,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36632 states. [2021-06-12 20:41:10,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36632 to 19412. [2021-06-12 20:41:10,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19412 states, 19411 states have (on average 3.9391066920818094) internal successors, (76462), 19411 states have internal predecessors, (76462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:10,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19412 states to 19412 states and 76462 transitions. [2021-06-12 20:41:10,176 INFO L78 Accepts]: Start accepts. Automaton has 19412 states and 76462 transitions. Word has length 39 [2021-06-12 20:41:10,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:10,176 INFO L482 AbstractCegarLoop]: Abstraction has 19412 states and 76462 transitions. [2021-06-12 20:41:10,176 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) [2021-06-12 20:41:10,176 INFO L276 IsEmpty]: Start isEmpty. Operand 19412 states and 76462 transitions. [2021-06-12 20:41:10,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:10,212 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:10,212 INFO L472 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] [2021-06-12 20:41:10,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-12 20:41:10,212 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:10,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:10,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1928888210, now seen corresponding path program 7 times [2021-06-12 20:41:10,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:10,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722900776] [2021-06-12 20:41:10,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:10,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:10,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:10,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722900776] [2021-06-12 20:41:10,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722900776] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:10,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:10,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-12 20:41:10,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100388520] [2021-06-12 20:41:10,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 20:41:10,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:10,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 20:41:10,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-12 20:41:10,247 INFO L87 Difference]: Start difference. First operand 19412 states and 76462 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) [2021-06-12 20:41:10,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:10,709 INFO L93 Difference]: Finished difference Result 35951 states and 140019 transitions. [2021-06-12 20:41:10,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-12 20:41:10,709 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 [2021-06-12 20:41:10,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:10,807 INFO L225 Difference]: With dead ends: 35951 [2021-06-12 20:41:10,807 INFO L226 Difference]: Without dead ends: 35939 [2021-06-12 20:41:10,808 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.0ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:41:10,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35939 states. [2021-06-12 20:41:11,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35939 to 21351. [2021-06-12 20:41:11,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21351 states, 21350 states have (on average 3.9075878220140514) internal successors, (83427), 21350 states have internal predecessors, (83427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:11,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21351 states to 21351 states and 83427 transitions. [2021-06-12 20:41:11,517 INFO L78 Accepts]: Start accepts. Automaton has 21351 states and 83427 transitions. Word has length 39 [2021-06-12 20:41:11,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:11,517 INFO L482 AbstractCegarLoop]: Abstraction has 21351 states and 83427 transitions. [2021-06-12 20:41:11,517 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) [2021-06-12 20:41:11,517 INFO L276 IsEmpty]: Start isEmpty. Operand 21351 states and 83427 transitions. [2021-06-12 20:41:11,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:11,562 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:11,562 INFO L472 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] [2021-06-12 20:41:11,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-12 20:41:11,563 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:11,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:11,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1773619328, now seen corresponding path program 8 times [2021-06-12 20:41:11,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:11,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89794020] [2021-06-12 20:41:11,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:11,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:11,598 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:11,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89794020] [2021-06-12 20:41:11,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89794020] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:11,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:11,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-12 20:41:11,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859181854] [2021-06-12 20:41:11,599 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 20:41:11,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:11,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 20:41:11,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-12 20:41:11,600 INFO L87 Difference]: Start difference. First operand 21351 states and 83427 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) [2021-06-12 20:41:12,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:12,061 INFO L93 Difference]: Finished difference Result 35903 states and 138617 transitions. [2021-06-12 20:41:12,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-12 20:41:12,062 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 [2021-06-12 20:41:12,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:12,152 INFO L225 Difference]: With dead ends: 35903 [2021-06-12 20:41:12,152 INFO L226 Difference]: Without dead ends: 35873 [2021-06-12 20:41:12,152 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.2ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:41:12,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35873 states. [2021-06-12 20:41:12,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35873 to 21689. [2021-06-12 20:41:12,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21689 states, 21688 states have (on average 3.866008852821837) internal successors, (83846), 21688 states have internal predecessors, (83846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:12,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21689 states to 21689 states and 83846 transitions. [2021-06-12 20:41:12,802 INFO L78 Accepts]: Start accepts. Automaton has 21689 states and 83846 transitions. Word has length 39 [2021-06-12 20:41:12,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:12,802 INFO L482 AbstractCegarLoop]: Abstraction has 21689 states and 83846 transitions. [2021-06-12 20:41:12,802 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) [2021-06-12 20:41:12,802 INFO L276 IsEmpty]: Start isEmpty. Operand 21689 states and 83846 transitions. [2021-06-12 20:41:12,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:12,834 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:12,834 INFO L472 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] [2021-06-12 20:41:12,835 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-12 20:41:12,835 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:12,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:12,835 INFO L82 PathProgramCache]: Analyzing trace with hash 785627998, now seen corresponding path program 9 times [2021-06-12 20:41:12,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:12,835 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829482745] [2021-06-12 20:41:12,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:12,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:12,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:12,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829482745] [2021-06-12 20:41:12,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829482745] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:12,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:12,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-12 20:41:12,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078060487] [2021-06-12 20:41:12,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-12 20:41:12,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:12,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-12 20:41:12,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-12 20:41:12,863 INFO L87 Difference]: Start difference. First operand 21689 states and 83846 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) [2021-06-12 20:41:13,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:13,008 INFO L93 Difference]: Finished difference Result 21647 states and 83363 transitions. [2021-06-12 20:41:13,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-12 20:41:13,009 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 [2021-06-12 20:41:13,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:13,245 INFO L225 Difference]: With dead ends: 21647 [2021-06-12 20:41:13,245 INFO L226 Difference]: Without dead ends: 21605 [2021-06-12 20:41:13,245 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-12 20:41:13,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21605 states. [2021-06-12 20:41:13,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21605 to 21403. [2021-06-12 20:41:13,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21403 states, 21402 states have (on average 3.863470703672554) internal successors, (82686), 21402 states have internal predecessors, (82686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:13,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21403 states to 21403 states and 82686 transitions. [2021-06-12 20:41:13,852 INFO L78 Accepts]: Start accepts. Automaton has 21403 states and 82686 transitions. Word has length 39 [2021-06-12 20:41:13,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:13,852 INFO L482 AbstractCegarLoop]: Abstraction has 21403 states and 82686 transitions. [2021-06-12 20:41:13,853 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) [2021-06-12 20:41:13,853 INFO L276 IsEmpty]: Start isEmpty. Operand 21403 states and 82686 transitions. [2021-06-12 20:41:13,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:13,899 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:13,899 INFO L472 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] [2021-06-12 20:41:13,899 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-12 20:41:13,899 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:13,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:13,900 INFO L82 PathProgramCache]: Analyzing trace with hash 795653918, now seen corresponding path program 10 times [2021-06-12 20:41:13,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:13,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927253116] [2021-06-12 20:41:13,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:13,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:13,948 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:13,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927253116] [2021-06-12 20:41:13,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927253116] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:13,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:13,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-12 20:41:13,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868629426] [2021-06-12 20:41:13,948 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-12 20:41:13,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:13,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-12 20:41:13,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-12 20:41:13,949 INFO L87 Difference]: Start difference. First operand 21403 states and 82686 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) [2021-06-12 20:41:14,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:14,131 INFO L93 Difference]: Finished difference Result 21227 states and 81806 transitions. [2021-06-12 20:41:14,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-12 20:41:14,132 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 [2021-06-12 20:41:14,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:14,178 INFO L225 Difference]: With dead ends: 21227 [2021-06-12 20:41:14,178 INFO L226 Difference]: Without dead ends: 21203 [2021-06-12 20:41:14,178 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-12 20:41:14,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21203 states. [2021-06-12 20:41:14,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21203 to 21050. [2021-06-12 20:41:14,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21050 states, 21049 states have (on average 3.8641740700270795) internal successors, (81337), 21049 states have internal predecessors, (81337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:14,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21050 states to 21050 states and 81337 transitions. [2021-06-12 20:41:14,776 INFO L78 Accepts]: Start accepts. Automaton has 21050 states and 81337 transitions. Word has length 39 [2021-06-12 20:41:14,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:14,776 INFO L482 AbstractCegarLoop]: Abstraction has 21050 states and 81337 transitions. [2021-06-12 20:41:14,776 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) [2021-06-12 20:41:14,776 INFO L276 IsEmpty]: Start isEmpty. Operand 21050 states and 81337 transitions. [2021-06-12 20:41:14,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:14,807 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:14,807 INFO L472 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] [2021-06-12 20:41:14,807 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-12 20:41:14,808 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:14,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:14,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1630683528, now seen corresponding path program 11 times [2021-06-12 20:41:14,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:14,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881926707] [2021-06-12 20:41:14,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:14,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:14,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:14,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881926707] [2021-06-12 20:41:14,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881926707] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:14,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:14,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 20:41:14,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38082065] [2021-06-12 20:41:14,851 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 20:41:14,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:14,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 20:41:14,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:41:14,852 INFO L87 Difference]: Start difference. First operand 21050 states and 81337 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) [2021-06-12 20:41:15,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:15,448 INFO L93 Difference]: Finished difference Result 41364 states and 158003 transitions. [2021-06-12 20:41:15,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 20:41:15,448 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 [2021-06-12 20:41:15,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:15,568 INFO L225 Difference]: With dead ends: 41364 [2021-06-12 20:41:15,568 INFO L226 Difference]: Without dead ends: 41364 [2021-06-12 20:41:15,568 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 50.2ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-06-12 20:41:15,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41364 states. [2021-06-12 20:41:16,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41364 to 24666. [2021-06-12 20:41:16,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24666 states, 24665 states have (on average 3.801054125278735) internal successors, (93753), 24665 states have internal predecessors, (93753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:16,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24666 states to 24666 states and 93753 transitions. [2021-06-12 20:41:16,296 INFO L78 Accepts]: Start accepts. Automaton has 24666 states and 93753 transitions. Word has length 39 [2021-06-12 20:41:16,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:16,296 INFO L482 AbstractCegarLoop]: Abstraction has 24666 states and 93753 transitions. [2021-06-12 20:41:16,297 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) [2021-06-12 20:41:16,297 INFO L276 IsEmpty]: Start isEmpty. Operand 24666 states and 93753 transitions. [2021-06-12 20:41:16,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:16,341 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:16,341 INFO L472 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] [2021-06-12 20:41:16,341 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-12 20:41:16,342 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:16,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:16,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1481740522, now seen corresponding path program 12 times [2021-06-12 20:41:16,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:16,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096705080] [2021-06-12 20:41:16,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:16,367 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:16,367 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096705080] [2021-06-12 20:41:16,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096705080] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:16,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:16,368 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-12 20:41:16,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347824023] [2021-06-12 20:41:16,368 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-12 20:41:16,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:16,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-12 20:41:16,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-12 20:41:16,369 INFO L87 Difference]: Start difference. First operand 24666 states and 93753 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) [2021-06-12 20:41:16,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:16,522 INFO L93 Difference]: Finished difference Result 24060 states and 91079 transitions. [2021-06-12 20:41:16,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-12 20:41:16,522 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 [2021-06-12 20:41:16,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:16,570 INFO L225 Difference]: With dead ends: 24060 [2021-06-12 20:41:16,570 INFO L226 Difference]: Without dead ends: 23997 [2021-06-12 20:41:16,571 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-12 20:41:16,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23997 states. [2021-06-12 20:41:17,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23997 to 23727. [2021-06-12 20:41:17,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23727 states, 23726 states have (on average 3.8022844137233416) internal successors, (90213), 23726 states have internal predecessors, (90213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:17,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23727 states to 23727 states and 90213 transitions. [2021-06-12 20:41:17,284 INFO L78 Accepts]: Start accepts. Automaton has 23727 states and 90213 transitions. Word has length 39 [2021-06-12 20:41:17,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:17,284 INFO L482 AbstractCegarLoop]: Abstraction has 23727 states and 90213 transitions. [2021-06-12 20:41:17,284 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) [2021-06-12 20:41:17,284 INFO L276 IsEmpty]: Start isEmpty. Operand 23727 states and 90213 transitions. [2021-06-12 20:41:17,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:17,530 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:17,531 INFO L472 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] [2021-06-12 20:41:17,531 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-12 20:41:17,531 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:17,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:17,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1323199580, now seen corresponding path program 13 times [2021-06-12 20:41:17,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:17,531 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910580649] [2021-06-12 20:41:17,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:17,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:17,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:17,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910580649] [2021-06-12 20:41:17,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910580649] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:17,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:17,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-12 20:41:17,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740477552] [2021-06-12 20:41:17,612 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 20:41:17,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:17,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 20:41:17,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-12 20:41:17,612 INFO L87 Difference]: Start difference. First operand 23727 states and 90213 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) [2021-06-12 20:41:17,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:17,836 INFO L93 Difference]: Finished difference Result 39912 states and 151078 transitions. [2021-06-12 20:41:17,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-12 20:41:17,836 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 [2021-06-12 20:41:17,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:17,923 INFO L225 Difference]: With dead ends: 39912 [2021-06-12 20:41:17,923 INFO L226 Difference]: Without dead ends: 39864 [2021-06-12 20:41:17,924 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.2ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:41:18,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39864 states. [2021-06-12 20:41:18,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39864 to 24281. [2021-06-12 20:41:18,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24281 states, 24280 states have (on average 3.7902388797364086) internal successors, (92027), 24280 states have internal predecessors, (92027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:18,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24281 states to 24281 states and 92027 transitions. [2021-06-12 20:41:18,622 INFO L78 Accepts]: Start accepts. Automaton has 24281 states and 92027 transitions. Word has length 39 [2021-06-12 20:41:18,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:18,623 INFO L482 AbstractCegarLoop]: Abstraction has 24281 states and 92027 transitions. [2021-06-12 20:41:18,623 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) [2021-06-12 20:41:18,623 INFO L276 IsEmpty]: Start isEmpty. Operand 24281 states and 92027 transitions. [2021-06-12 20:41:18,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:18,659 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:18,659 INFO L472 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] [2021-06-12 20:41:18,659 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-12 20:41:18,659 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:18,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:18,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1923174852, now seen corresponding path program 14 times [2021-06-12 20:41:18,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:18,660 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123557816] [2021-06-12 20:41:18,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:18,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:18,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:18,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123557816] [2021-06-12 20:41:18,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123557816] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:18,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:18,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-12 20:41:18,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788870047] [2021-06-12 20:41:18,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 20:41:18,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:18,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 20:41:18,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-12 20:41:18,701 INFO L87 Difference]: Start difference. First operand 24281 states and 92027 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) [2021-06-12 20:41:19,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:19,058 INFO L93 Difference]: Finished difference Result 32456 states and 120014 transitions. [2021-06-12 20:41:19,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-12 20:41:19,058 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 [2021-06-12 20:41:19,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:19,126 INFO L225 Difference]: With dead ends: 32456 [2021-06-12 20:41:19,126 INFO L226 Difference]: Without dead ends: 32320 [2021-06-12 20:41:19,126 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.1ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:41:19,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32320 states. [2021-06-12 20:41:19,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32320 to 20818. [2021-06-12 20:41:19,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20818 states, 20817 states have (on average 3.6923668155834175) internal successors, (76864), 20817 states have internal predecessors, (76864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:19,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20818 states to 20818 states and 76864 transitions. [2021-06-12 20:41:19,731 INFO L78 Accepts]: Start accepts. Automaton has 20818 states and 76864 transitions. Word has length 39 [2021-06-12 20:41:19,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:19,731 INFO L482 AbstractCegarLoop]: Abstraction has 20818 states and 76864 transitions. [2021-06-12 20:41:19,731 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) [2021-06-12 20:41:19,731 INFO L276 IsEmpty]: Start isEmpty. Operand 20818 states and 76864 transitions. [2021-06-12 20:41:19,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:19,762 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:19,762 INFO L472 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] [2021-06-12 20:41:19,762 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-12 20:41:19,763 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:19,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:19,763 INFO L82 PathProgramCache]: Analyzing trace with hash -62454086, now seen corresponding path program 15 times [2021-06-12 20:41:19,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:19,763 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080687471] [2021-06-12 20:41:19,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:19,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:19,812 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:19,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080687471] [2021-06-12 20:41:19,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080687471] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:19,812 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:19,812 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 20:41:19,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917531057] [2021-06-12 20:41:19,813 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 20:41:19,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:19,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 20:41:19,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:41:19,814 INFO L87 Difference]: Start difference. First operand 20818 states and 76864 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) [2021-06-12 20:41:20,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:20,102 INFO L93 Difference]: Finished difference Result 36117 states and 131263 transitions. [2021-06-12 20:41:20,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-12 20:41:20,102 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 [2021-06-12 20:41:20,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:20,176 INFO L225 Difference]: With dead ends: 36117 [2021-06-12 20:41:20,176 INFO L226 Difference]: Without dead ends: 35877 [2021-06-12 20:41:20,176 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 32.4ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:41:20,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35877 states. [2021-06-12 20:41:20,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35877 to 21634. [2021-06-12 20:41:20,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21634 states, 21633 states have (on average 3.6624139046826607) internal successors, (79229), 21633 states have internal predecessors, (79229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:20,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21634 states to 21634 states and 79229 transitions. [2021-06-12 20:41:20,885 INFO L78 Accepts]: Start accepts. Automaton has 21634 states and 79229 transitions. Word has length 39 [2021-06-12 20:41:20,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:20,885 INFO L482 AbstractCegarLoop]: Abstraction has 21634 states and 79229 transitions. [2021-06-12 20:41:20,885 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) [2021-06-12 20:41:20,885 INFO L276 IsEmpty]: Start isEmpty. Operand 21634 states and 79229 transitions. [2021-06-12 20:41:21,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:21,118 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:21,118 INFO L472 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] [2021-06-12 20:41:21,118 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-12 20:41:21,118 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:21,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:21,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1604655972, now seen corresponding path program 16 times [2021-06-12 20:41:21,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:21,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396161312] [2021-06-12 20:41:21,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:21,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:21,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:21,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396161312] [2021-06-12 20:41:21,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396161312] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:21,206 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:21,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 20:41:21,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916798249] [2021-06-12 20:41:21,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 20:41:21,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:21,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 20:41:21,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:41:21,207 INFO L87 Difference]: Start difference. First operand 21634 states and 79229 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) [2021-06-12 20:41:21,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:21,554 INFO L93 Difference]: Finished difference Result 38178 states and 137087 transitions. [2021-06-12 20:41:21,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 20:41:21,555 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 [2021-06-12 20:41:21,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:21,630 INFO L225 Difference]: With dead ends: 38178 [2021-06-12 20:41:21,630 INFO L226 Difference]: Without dead ends: 37920 [2021-06-12 20:41:21,630 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 44.2ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-12 20:41:21,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37920 states. [2021-06-12 20:41:22,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37920 to 22991. [2021-06-12 20:41:22,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22991 states, 22990 states have (on average 3.6151805132666377) internal successors, (83113), 22990 states have internal predecessors, (83113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:22,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22991 states to 22991 states and 83113 transitions. [2021-06-12 20:41:22,275 INFO L78 Accepts]: Start accepts. Automaton has 22991 states and 83113 transitions. Word has length 39 [2021-06-12 20:41:22,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:22,276 INFO L482 AbstractCegarLoop]: Abstraction has 22991 states and 83113 transitions. [2021-06-12 20:41:22,276 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) [2021-06-12 20:41:22,276 INFO L276 IsEmpty]: Start isEmpty. Operand 22991 states and 83113 transitions. [2021-06-12 20:41:22,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:22,310 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:22,310 INFO L472 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] [2021-06-12 20:41:22,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-12 20:41:22,310 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:22,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:22,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1808174234, now seen corresponding path program 17 times [2021-06-12 20:41:22,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:22,311 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827245708] [2021-06-12 20:41:22,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:22,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:22,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:22,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827245708] [2021-06-12 20:41:22,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827245708] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:22,352 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:22,352 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 20:41:22,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478017538] [2021-06-12 20:41:22,353 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 20:41:22,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:22,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 20:41:22,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:41:22,353 INFO L87 Difference]: Start difference. First operand 22991 states and 83113 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) [2021-06-12 20:41:22,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:22,879 INFO L93 Difference]: Finished difference Result 37550 states and 133913 transitions. [2021-06-12 20:41:22,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-12 20:41:22,880 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 [2021-06-12 20:41:22,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:22,960 INFO L225 Difference]: With dead ends: 37550 [2021-06-12 20:41:22,961 INFO L226 Difference]: Without dead ends: 37350 [2021-06-12 20:41:22,961 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 27.8ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:41:23,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37350 states. [2021-06-12 20:41:23,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37350 to 22436. [2021-06-12 20:41:23,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22436 states, 22435 states have (on average 3.5778916870960553) internal successors, (80270), 22435 states have internal predecessors, (80270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:23,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22436 states to 22436 states and 80270 transitions. [2021-06-12 20:41:23,598 INFO L78 Accepts]: Start accepts. Automaton has 22436 states and 80270 transitions. Word has length 39 [2021-06-12 20:41:23,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:23,598 INFO L482 AbstractCegarLoop]: Abstraction has 22436 states and 80270 transitions. [2021-06-12 20:41:23,598 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) [2021-06-12 20:41:23,598 INFO L276 IsEmpty]: Start isEmpty. Operand 22436 states and 80270 transitions. [2021-06-12 20:41:23,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:23,629 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:23,629 INFO L472 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] [2021-06-12 20:41:23,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-12 20:41:23,630 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:23,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:23,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1070739068, now seen corresponding path program 18 times [2021-06-12 20:41:23,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:23,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079783161] [2021-06-12 20:41:23,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:23,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:23,670 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:23,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079783161] [2021-06-12 20:41:23,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079783161] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:23,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:23,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 20:41:23,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120191727] [2021-06-12 20:41:23,671 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 20:41:23,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:23,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 20:41:23,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:41:23,671 INFO L87 Difference]: Start difference. First operand 22436 states and 80270 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) [2021-06-12 20:41:24,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:24,008 INFO L93 Difference]: Finished difference Result 35683 states and 123807 transitions. [2021-06-12 20:41:24,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 20:41:24,009 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 [2021-06-12 20:41:24,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:24,094 INFO L225 Difference]: With dead ends: 35683 [2021-06-12 20:41:24,094 INFO L226 Difference]: Without dead ends: 35127 [2021-06-12 20:41:24,095 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 40.5ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-12 20:41:24,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35127 states. [2021-06-12 20:41:24,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35127 to 21141. [2021-06-12 20:41:24,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21141 states, 21140 states have (on average 3.479091769157994) internal successors, (73548), 21140 states have internal predecessors, (73548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:24,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21141 states to 21141 states and 73548 transitions. [2021-06-12 20:41:24,757 INFO L78 Accepts]: Start accepts. Automaton has 21141 states and 73548 transitions. Word has length 39 [2021-06-12 20:41:24,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:24,757 INFO L482 AbstractCegarLoop]: Abstraction has 21141 states and 73548 transitions. [2021-06-12 20:41:24,757 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) [2021-06-12 20:41:24,758 INFO L276 IsEmpty]: Start isEmpty. Operand 21141 states and 73548 transitions. [2021-06-12 20:41:24,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:24,786 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:24,786 INFO L472 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] [2021-06-12 20:41:24,787 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-12 20:41:24,787 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:24,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:24,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1489406878, now seen corresponding path program 19 times [2021-06-12 20:41:24,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:24,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84664923] [2021-06-12 20:41:24,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:24,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:24,819 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:24,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84664923] [2021-06-12 20:41:24,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84664923] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:24,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:24,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-12 20:41:24,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659645224] [2021-06-12 20:41:24,819 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 20:41:24,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:24,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 20:41:24,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-12 20:41:24,820 INFO L87 Difference]: Start difference. First operand 21141 states and 73548 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) [2021-06-12 20:41:25,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:25,202 INFO L93 Difference]: Finished difference Result 34526 states and 119373 transitions. [2021-06-12 20:41:25,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-12 20:41:25,202 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 [2021-06-12 20:41:25,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:25,267 INFO L225 Difference]: With dead ends: 34526 [2021-06-12 20:41:25,268 INFO L226 Difference]: Without dead ends: 34342 [2021-06-12 20:41:25,268 INFO L728 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 [2021-06-12 20:41:25,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34342 states. [2021-06-12 20:41:25,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34342 to 20667. [2021-06-12 20:41:25,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20667 states, 20666 states have (on average 3.459498693506242) internal successors, (71494), 20666 states have internal predecessors, (71494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:25,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20667 states to 20667 states and 71494 transitions. [2021-06-12 20:41:25,856 INFO L78 Accepts]: Start accepts. Automaton has 20667 states and 71494 transitions. Word has length 39 [2021-06-12 20:41:25,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:25,856 INFO L482 AbstractCegarLoop]: Abstraction has 20667 states and 71494 transitions. [2021-06-12 20:41:25,856 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) [2021-06-12 20:41:25,856 INFO L276 IsEmpty]: Start isEmpty. Operand 20667 states and 71494 transitions. [2021-06-12 20:41:25,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:25,884 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:25,884 INFO L472 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] [2021-06-12 20:41:25,884 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-12 20:41:25,884 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:25,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:25,885 INFO L82 PathProgramCache]: Analyzing trace with hash 921984860, now seen corresponding path program 20 times [2021-06-12 20:41:25,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:25,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438234089] [2021-06-12 20:41:25,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:25,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:25,932 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:25,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438234089] [2021-06-12 20:41:25,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438234089] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:25,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:25,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 20:41:25,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11512137] [2021-06-12 20:41:25,932 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 20:41:25,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:25,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 20:41:25,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:41:25,933 INFO L87 Difference]: Start difference. First operand 20667 states and 71494 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) [2021-06-12 20:41:26,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:26,207 INFO L93 Difference]: Finished difference Result 30341 states and 101554 transitions. [2021-06-12 20:41:26,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 20:41:26,208 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 [2021-06-12 20:41:26,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:26,261 INFO L225 Difference]: With dead ends: 30341 [2021-06-12 20:41:26,261 INFO L226 Difference]: Without dead ends: 28975 [2021-06-12 20:41:26,262 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 41.9ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-12 20:41:26,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28975 states. [2021-06-12 20:41:26,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28975 to 18475. [2021-06-12 20:41:26,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18475 states, 18474 states have (on average 3.362725993287864) internal successors, (62123), 18474 states have internal predecessors, (62123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:26,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18475 states to 18475 states and 62123 transitions. [2021-06-12 20:41:26,810 INFO L78 Accepts]: Start accepts. Automaton has 18475 states and 62123 transitions. Word has length 39 [2021-06-12 20:41:26,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:26,810 INFO L482 AbstractCegarLoop]: Abstraction has 18475 states and 62123 transitions. [2021-06-12 20:41:26,810 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) [2021-06-12 20:41:26,810 INFO L276 IsEmpty]: Start isEmpty. Operand 18475 states and 62123 transitions. [2021-06-12 20:41:26,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:26,835 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:26,835 INFO L472 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] [2021-06-12 20:41:26,835 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-12 20:41:26,835 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:26,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:26,835 INFO L82 PathProgramCache]: Analyzing trace with hash -2140176006, now seen corresponding path program 21 times [2021-06-12 20:41:26,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:26,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814482206] [2021-06-12 20:41:26,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:26,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:26,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:26,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814482206] [2021-06-12 20:41:26,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814482206] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:26,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:26,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 20:41:26,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494359282] [2021-06-12 20:41:26,881 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 20:41:26,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:26,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 20:41:26,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:41:26,882 INFO L87 Difference]: Start difference. First operand 18475 states and 62123 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) [2021-06-12 20:41:27,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:27,182 INFO L93 Difference]: Finished difference Result 28267 states and 94087 transitions. [2021-06-12 20:41:27,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 20:41:27,182 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 [2021-06-12 20:41:27,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:27,440 INFO L225 Difference]: With dead ends: 28267 [2021-06-12 20:41:27,440 INFO L226 Difference]: Without dead ends: 28159 [2021-06-12 20:41:27,441 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 33.2ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-06-12 20:41:27,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28159 states. [2021-06-12 20:41:27,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28159 to 18449. [2021-06-12 20:41:27,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18449 states, 18448 states have (on average 3.357328707718994) internal successors, (61936), 18448 states have internal predecessors, (61936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:27,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18449 states to 18449 states and 61936 transitions. [2021-06-12 20:41:27,795 INFO L78 Accepts]: Start accepts. Automaton has 18449 states and 61936 transitions. Word has length 39 [2021-06-12 20:41:27,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:27,795 INFO L482 AbstractCegarLoop]: Abstraction has 18449 states and 61936 transitions. [2021-06-12 20:41:27,796 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) [2021-06-12 20:41:27,796 INFO L276 IsEmpty]: Start isEmpty. Operand 18449 states and 61936 transitions. [2021-06-12 20:41:27,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:27,822 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:27,822 INFO L472 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] [2021-06-12 20:41:27,822 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-12 20:41:27,823 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:27,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:27,823 INFO L82 PathProgramCache]: Analyzing trace with hash -539276934, now seen corresponding path program 22 times [2021-06-12 20:41:27,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:27,823 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645473574] [2021-06-12 20:41:27,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:27,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:27,868 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:27,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645473574] [2021-06-12 20:41:27,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645473574] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:27,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:27,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 20:41:27,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188596651] [2021-06-12 20:41:27,868 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 20:41:27,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:27,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 20:41:27,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:41:27,869 INFO L87 Difference]: Start difference. First operand 18449 states and 61936 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) [2021-06-12 20:41:28,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:28,328 INFO L93 Difference]: Finished difference Result 28032 states and 93171 transitions. [2021-06-12 20:41:28,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 20:41:28,329 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 [2021-06-12 20:41:28,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:28,380 INFO L225 Difference]: With dead ends: 28032 [2021-06-12 20:41:28,380 INFO L226 Difference]: Without dead ends: 27672 [2021-06-12 20:41:28,380 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 45.9ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-12 20:41:28,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27672 states. [2021-06-12 20:41:28,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27672 to 18187. [2021-06-12 20:41:28,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18187 states, 18186 states have (on average 3.346530298031453) internal successors, (60860), 18186 states have internal predecessors, (60860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:28,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18187 states to 18187 states and 60860 transitions. [2021-06-12 20:41:28,949 INFO L78 Accepts]: Start accepts. Automaton has 18187 states and 60860 transitions. Word has length 39 [2021-06-12 20:41:28,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:28,949 INFO L482 AbstractCegarLoop]: Abstraction has 18187 states and 60860 transitions. [2021-06-12 20:41:28,949 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) [2021-06-12 20:41:28,949 INFO L276 IsEmpty]: Start isEmpty. Operand 18187 states and 60860 transitions. [2021-06-12 20:41:28,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:28,974 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:28,974 INFO L472 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] [2021-06-12 20:41:28,974 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-12 20:41:28,974 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:28,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:28,974 INFO L82 PathProgramCache]: Analyzing trace with hash 2076747928, now seen corresponding path program 23 times [2021-06-12 20:41:28,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:28,975 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174427898] [2021-06-12 20:41:28,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:29,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:29,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:29,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174427898] [2021-06-12 20:41:29,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174427898] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:29,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:29,038 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-12 20:41:29,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567443876] [2021-06-12 20:41:29,038 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 20:41:29,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:29,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 20:41:29,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-12 20:41:29,039 INFO L87 Difference]: Start difference. First operand 18187 states and 60860 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) [2021-06-12 20:41:29,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:29,457 INFO L93 Difference]: Finished difference Result 27773 states and 91779 transitions. [2021-06-12 20:41:29,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 20:41:29,457 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 [2021-06-12 20:41:29,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:29,507 INFO L225 Difference]: With dead ends: 27773 [2021-06-12 20:41:29,507 INFO L226 Difference]: Without dead ends: 27521 [2021-06-12 20:41:29,507 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 85.6ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-12 20:41:29,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27521 states. [2021-06-12 20:41:29,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27521 to 18576. [2021-06-12 20:41:29,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18576 states, 18575 states have (on average 3.3176312247644684) internal successors, (61625), 18575 states have internal predecessors, (61625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:29,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18576 states to 18576 states and 61625 transitions. [2021-06-12 20:41:29,980 INFO L78 Accepts]: Start accepts. Automaton has 18576 states and 61625 transitions. Word has length 39 [2021-06-12 20:41:29,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:29,980 INFO L482 AbstractCegarLoop]: Abstraction has 18576 states and 61625 transitions. [2021-06-12 20:41:29,980 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) [2021-06-12 20:41:29,980 INFO L276 IsEmpty]: Start isEmpty. Operand 18576 states and 61625 transitions. [2021-06-12 20:41:30,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:30,004 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:30,004 INFO L472 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] [2021-06-12 20:41:30,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-12 20:41:30,004 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:30,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:30,005 INFO L82 PathProgramCache]: Analyzing trace with hash 904564570, now seen corresponding path program 24 times [2021-06-12 20:41:30,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:30,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986774126] [2021-06-12 20:41:30,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:30,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:30,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:30,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986774126] [2021-06-12 20:41:30,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986774126] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:30,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:30,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 20:41:30,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601199447] [2021-06-12 20:41:30,059 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 20:41:30,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:30,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 20:41:30,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:41:30,060 INFO L87 Difference]: Start difference. First operand 18576 states and 61625 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) [2021-06-12 20:41:30,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:30,335 INFO L93 Difference]: Finished difference Result 28814 states and 94330 transitions. [2021-06-12 20:41:30,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 20:41:30,335 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 [2021-06-12 20:41:30,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:30,386 INFO L225 Difference]: With dead ends: 28814 [2021-06-12 20:41:30,386 INFO L226 Difference]: Without dead ends: 28630 [2021-06-12 20:41:30,387 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 30.8ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-06-12 20:41:30,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28630 states. [2021-06-12 20:41:30,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28630 to 18552. [2021-06-12 20:41:30,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18552 states, 18551 states have (on average 3.308986038488491) internal successors, (61385), 18551 states have internal predecessors, (61385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:30,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18552 states to 18552 states and 61385 transitions. [2021-06-12 20:41:30,889 INFO L78 Accepts]: Start accepts. Automaton has 18552 states and 61385 transitions. Word has length 39 [2021-06-12 20:41:30,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:30,889 INFO L482 AbstractCegarLoop]: Abstraction has 18552 states and 61385 transitions. [2021-06-12 20:41:30,889 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) [2021-06-12 20:41:30,889 INFO L276 IsEmpty]: Start isEmpty. Operand 18552 states and 61385 transitions. [2021-06-12 20:41:30,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:30,913 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:30,913 INFO L472 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] [2021-06-12 20:41:30,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-12 20:41:30,914 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:30,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:30,914 INFO L82 PathProgramCache]: Analyzing trace with hash -984736934, now seen corresponding path program 25 times [2021-06-12 20:41:30,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:30,914 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235430204] [2021-06-12 20:41:30,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:30,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:30,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:30,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235430204] [2021-06-12 20:41:30,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235430204] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:30,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:30,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 20:41:30,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182721285] [2021-06-12 20:41:30,970 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 20:41:30,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:30,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 20:41:30,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:41:30,971 INFO L87 Difference]: Start difference. First operand 18552 states and 61385 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) [2021-06-12 20:41:31,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:31,430 INFO L93 Difference]: Finished difference Result 28644 states and 93689 transitions. [2021-06-12 20:41:31,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 20:41:31,431 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 [2021-06-12 20:41:31,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:31,485 INFO L225 Difference]: With dead ends: 28644 [2021-06-12 20:41:31,485 INFO L226 Difference]: Without dead ends: 27824 [2021-06-12 20:41:31,485 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 46.5ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-12 20:41:31,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27824 states. [2021-06-12 20:41:31,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27824 to 17898. [2021-06-12 20:41:31,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17898 states, 17897 states have (on average 3.2920601218081242) internal successors, (58918), 17897 states have internal predecessors, (58918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:31,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17898 states to 17898 states and 58918 transitions. [2021-06-12 20:41:31,816 INFO L78 Accepts]: Start accepts. Automaton has 17898 states and 58918 transitions. Word has length 39 [2021-06-12 20:41:31,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:31,816 INFO L482 AbstractCegarLoop]: Abstraction has 17898 states and 58918 transitions. [2021-06-12 20:41:31,816 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) [2021-06-12 20:41:31,816 INFO L276 IsEmpty]: Start isEmpty. Operand 17898 states and 58918 transitions. [2021-06-12 20:41:31,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:31,840 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:31,840 INFO L472 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] [2021-06-12 20:41:31,840 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-12 20:41:31,840 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:31,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:31,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1731722632, now seen corresponding path program 26 times [2021-06-12 20:41:31,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:31,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082274436] [2021-06-12 20:41:31,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:31,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:31,892 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:31,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082274436] [2021-06-12 20:41:31,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082274436] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:31,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:31,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-12 20:41:31,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245896899] [2021-06-12 20:41:31,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 20:41:31,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:31,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 20:41:31,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-12 20:41:31,893 INFO L87 Difference]: Start difference. First operand 17898 states and 58918 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) [2021-06-12 20:41:32,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:32,364 INFO L93 Difference]: Finished difference Result 28142 states and 91490 transitions. [2021-06-12 20:41:32,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 20:41:32,364 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 [2021-06-12 20:41:32,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:32,412 INFO L225 Difference]: With dead ends: 28142 [2021-06-12 20:41:32,412 INFO L226 Difference]: Without dead ends: 26796 [2021-06-12 20:41:32,413 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 65.3ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-12 20:41:32,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26796 states. [2021-06-12 20:41:32,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26796 to 17614. [2021-06-12 20:41:32,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17614 states, 17613 states have (on average 3.2751376823936864) internal successors, (57685), 17613 states have internal predecessors, (57685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:32,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17614 states to 17614 states and 57685 transitions. [2021-06-12 20:41:32,908 INFO L78 Accepts]: Start accepts. Automaton has 17614 states and 57685 transitions. Word has length 39 [2021-06-12 20:41:32,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:32,908 INFO L482 AbstractCegarLoop]: Abstraction has 17614 states and 57685 transitions. [2021-06-12 20:41:32,908 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) [2021-06-12 20:41:32,908 INFO L276 IsEmpty]: Start isEmpty. Operand 17614 states and 57685 transitions. [2021-06-12 20:41:32,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:32,930 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:32,931 INFO L472 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] [2021-06-12 20:41:32,931 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-12 20:41:32,931 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:32,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:32,931 INFO L82 PathProgramCache]: Analyzing trace with hash -652913060, now seen corresponding path program 27 times [2021-06-12 20:41:32,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:32,931 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121059618] [2021-06-12 20:41:32,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:32,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:32,991 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:32,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121059618] [2021-06-12 20:41:32,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121059618] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:32,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:32,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-12 20:41:32,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323245729] [2021-06-12 20:41:32,992 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 20:41:32,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:32,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 20:41:32,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-12 20:41:32,992 INFO L87 Difference]: Start difference. First operand 17614 states and 57685 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) [2021-06-12 20:41:33,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:33,384 INFO L93 Difference]: Finished difference Result 27764 states and 89075 transitions. [2021-06-12 20:41:33,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 20:41:33,385 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 [2021-06-12 20:41:33,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:33,430 INFO L225 Difference]: With dead ends: 27764 [2021-06-12 20:41:33,431 INFO L226 Difference]: Without dead ends: 26272 [2021-06-12 20:41:33,431 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 78.9ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-12 20:41:33,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26272 states. [2021-06-12 20:41:33,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26272 to 16042. [2021-06-12 20:41:33,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16042 states, 16041 states have (on average 3.2308459572345862) internal successors, (51826), 16041 states have internal predecessors, (51826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:33,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16042 states to 16042 states and 51826 transitions. [2021-06-12 20:41:33,855 INFO L78 Accepts]: Start accepts. Automaton has 16042 states and 51826 transitions. Word has length 39 [2021-06-12 20:41:33,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:33,855 INFO L482 AbstractCegarLoop]: Abstraction has 16042 states and 51826 transitions. [2021-06-12 20:41:33,855 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) [2021-06-12 20:41:33,855 INFO L276 IsEmpty]: Start isEmpty. Operand 16042 states and 51826 transitions. [2021-06-12 20:41:33,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:33,876 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:33,876 INFO L472 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] [2021-06-12 20:41:33,876 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-12 20:41:33,876 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:33,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:33,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1990404212, now seen corresponding path program 28 times [2021-06-12 20:41:33,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:33,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106403960] [2021-06-12 20:41:33,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:33,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:33,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:33,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106403960] [2021-06-12 20:41:33,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106403960] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:33,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:33,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-12 20:41:33,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509745712] [2021-06-12 20:41:33,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 20:41:33,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:33,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 20:41:33,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-12 20:41:33,915 INFO L87 Difference]: Start difference. First operand 16042 states and 51826 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) [2021-06-12 20:41:34,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:34,103 INFO L93 Difference]: Finished difference Result 26251 states and 83635 transitions. [2021-06-12 20:41:34,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-12 20:41:34,103 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 [2021-06-12 20:41:34,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:34,160 INFO L225 Difference]: With dead ends: 26251 [2021-06-12 20:41:34,160 INFO L226 Difference]: Without dead ends: 25907 [2021-06-12 20:41:34,160 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.4ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:41:34,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25907 states. [2021-06-12 20:41:34,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25907 to 15530. [2021-06-12 20:41:34,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15530 states, 15529 states have (on average 3.2065168394616523) internal successors, (49794), 15529 states have internal predecessors, (49794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:41:34,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15530 states to 15530 states and 49794 transitions. [2021-06-12 20:41:34,637 INFO L78 Accepts]: Start accepts. Automaton has 15530 states and 49794 transitions. Word has length 39 [2021-06-12 20:41:34,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:34,637 INFO L482 AbstractCegarLoop]: Abstraction has 15530 states and 49794 transitions. [2021-06-12 20:41:34,637 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) [2021-06-12 20:41:34,637 INFO L276 IsEmpty]: Start isEmpty. Operand 15530 states and 49794 transitions. [2021-06-12 20:41:34,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:34,657 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:34,657 INFO L472 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] [2021-06-12 20:41:34,657 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-12 20:41:34,657 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:34,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:34,658 INFO L82 PathProgramCache]: Analyzing trace with hash -486861366, now seen corresponding path program 29 times [2021-06-12 20:41:34,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:34,658 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273755335] [2021-06-12 20:41:34,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:34,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:34,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273755335] [2021-06-12 20:41:34,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273755335] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:34,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:34,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 20:41:34,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125113223] [2021-06-12 20:41:34,695 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 20:41:34,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:34,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 20:41:34,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:41:34,695 INFO L87 Difference]: Start difference. First operand 15530 states and 49794 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) [2021-06-12 20:41:34,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:34,904 INFO L93 Difference]: Finished difference Result 19376 states and 57898 transitions. [2021-06-12 20:41:34,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 20:41:34,905 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 [2021-06-12 20:41:34,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:34,930 INFO L225 Difference]: With dead ends: 19376 [2021-06-12 20:41:34,930 INFO L226 Difference]: Without dead ends: 17805 [2021-06-12 20:41:34,930 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 36.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-12 20:41:34,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17805 states. [2021-06-12 20:41:35,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17805 to 10863. [2021-06-12 20:41:35,094 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) [2021-06-12 20:41:35,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10863 states to 10863 states and 32909 transitions. [2021-06-12 20:41:35,113 INFO L78 Accepts]: Start accepts. Automaton has 10863 states and 32909 transitions. Word has length 39 [2021-06-12 20:41:35,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:35,113 INFO L482 AbstractCegarLoop]: Abstraction has 10863 states and 32909 transitions. [2021-06-12 20:41:35,113 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) [2021-06-12 20:41:35,113 INFO L276 IsEmpty]: Start isEmpty. Operand 10863 states and 32909 transitions. [2021-06-12 20:41:35,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:35,126 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:35,126 INFO L472 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] [2021-06-12 20:41:35,126 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-12 20:41:35,126 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:35,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:35,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1712472694, now seen corresponding path program 30 times [2021-06-12 20:41:35,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:35,127 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187302642] [2021-06-12 20:41:35,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:35,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:35,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:35,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187302642] [2021-06-12 20:41:35,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187302642] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:35,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:35,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 20:41:35,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110348103] [2021-06-12 20:41:35,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 20:41:35,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:35,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 20:41:35,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:41:35,341 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) [2021-06-12 20:41:35,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:35,618 INFO L93 Difference]: Finished difference Result 16060 states and 47771 transitions. [2021-06-12 20:41:35,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 20:41:35,619 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 [2021-06-12 20:41:35,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:35,648 INFO L225 Difference]: With dead ends: 16060 [2021-06-12 20:41:35,649 INFO L226 Difference]: Without dead ends: 15380 [2021-06-12 20:41:35,649 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-12 20:41:35,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15380 states. [2021-06-12 20:41:35,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15380 to 10289. [2021-06-12 20:41:35,853 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) [2021-06-12 20:41:35,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10289 states to 10289 states and 30970 transitions. [2021-06-12 20:41:35,872 INFO L78 Accepts]: Start accepts. Automaton has 10289 states and 30970 transitions. Word has length 39 [2021-06-12 20:41:35,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:35,872 INFO L482 AbstractCegarLoop]: Abstraction has 10289 states and 30970 transitions. [2021-06-12 20:41:35,872 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) [2021-06-12 20:41:35,872 INFO L276 IsEmpty]: Start isEmpty. Operand 10289 states and 30970 transitions. [2021-06-12 20:41:35,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:35,885 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:35,885 INFO L472 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] [2021-06-12 20:41:35,885 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-12 20:41:35,885 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:35,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:35,885 INFO L82 PathProgramCache]: Analyzing trace with hash -12539988, now seen corresponding path program 31 times [2021-06-12 20:41:35,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:35,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500118105] [2021-06-12 20:41:35,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:35,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:35,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:35,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500118105] [2021-06-12 20:41:35,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500118105] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:35,941 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:35,941 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-12 20:41:35,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442078530] [2021-06-12 20:41:35,942 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 20:41:35,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:35,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 20:41:35,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-12 20:41:35,942 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) [2021-06-12 20:41:36,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:36,237 INFO L93 Difference]: Finished difference Result 14404 states and 42007 transitions. [2021-06-12 20:41:36,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 20:41:36,238 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 [2021-06-12 20:41:36,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:36,261 INFO L225 Difference]: With dead ends: 14404 [2021-06-12 20:41:36,261 INFO L226 Difference]: Without dead ends: 13806 [2021-06-12 20:41:36,261 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 69.3ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-12 20:41:36,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13806 states. [2021-06-12 20:41:36,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13806 to 9515. [2021-06-12 20:41:36,457 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) [2021-06-12 20:41:36,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9515 states to 9515 states and 28297 transitions. [2021-06-12 20:41:36,472 INFO L78 Accepts]: Start accepts. Automaton has 9515 states and 28297 transitions. Word has length 39 [2021-06-12 20:41:36,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:36,473 INFO L482 AbstractCegarLoop]: Abstraction has 9515 states and 28297 transitions. [2021-06-12 20:41:36,473 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) [2021-06-12 20:41:36,473 INFO L276 IsEmpty]: Start isEmpty. Operand 9515 states and 28297 transitions. [2021-06-12 20:41:36,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:36,484 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:36,484 INFO L472 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] [2021-06-12 20:41:36,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-12 20:41:36,484 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:36,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:36,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1602526426, now seen corresponding path program 32 times [2021-06-12 20:41:36,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:36,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940961340] [2021-06-12 20:41:36,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:36,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:36,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:36,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940961340] [2021-06-12 20:41:36,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940961340] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:36,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:36,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 20:41:36,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226183108] [2021-06-12 20:41:36,532 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 20:41:36,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:36,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 20:41:36,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:41:36,532 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) [2021-06-12 20:41:36,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:36,770 INFO L93 Difference]: Finished difference Result 14734 states and 43845 transitions. [2021-06-12 20:41:36,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 20:41:36,770 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 [2021-06-12 20:41:36,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:36,791 INFO L225 Difference]: With dead ends: 14734 [2021-06-12 20:41:36,791 INFO L226 Difference]: Without dead ends: 14686 [2021-06-12 20:41:36,792 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 42.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-12 20:41:36,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14686 states. [2021-06-12 20:41:36,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14686 to 9376. [2021-06-12 20:41:36,931 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) [2021-06-12 20:41:36,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9376 states to 9376 states and 27782 transitions. [2021-06-12 20:41:36,948 INFO L78 Accepts]: Start accepts. Automaton has 9376 states and 27782 transitions. Word has length 39 [2021-06-12 20:41:36,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:36,948 INFO L482 AbstractCegarLoop]: Abstraction has 9376 states and 27782 transitions. [2021-06-12 20:41:36,948 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) [2021-06-12 20:41:36,948 INFO L276 IsEmpty]: Start isEmpty. Operand 9376 states and 27782 transitions. [2021-06-12 20:41:36,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:36,959 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:36,959 INFO L472 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] [2021-06-12 20:41:36,959 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-12 20:41:36,959 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:36,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:36,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1091541798, now seen corresponding path program 33 times [2021-06-12 20:41:36,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:36,960 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402604286] [2021-06-12 20:41:36,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:37,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:37,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:37,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402604286] [2021-06-12 20:41:37,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402604286] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:37,007 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:37,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 20:41:37,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727357965] [2021-06-12 20:41:37,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 20:41:37,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:37,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 20:41:37,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:41:37,008 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) [2021-06-12 20:41:37,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:37,388 INFO L93 Difference]: Finished difference Result 14599 states and 43322 transitions. [2021-06-12 20:41:37,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-12 20:41:37,389 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 [2021-06-12 20:41:37,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:37,416 INFO L225 Difference]: With dead ends: 14599 [2021-06-12 20:41:37,416 INFO L226 Difference]: Without dead ends: 14479 [2021-06-12 20:41:37,417 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 68.5ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-06-12 20:41:37,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14479 states. [2021-06-12 20:41:37,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14479 to 9268. [2021-06-12 20:41:37,600 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) [2021-06-12 20:41:37,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9268 states to 9268 states and 27416 transitions. [2021-06-12 20:41:37,617 INFO L78 Accepts]: Start accepts. Automaton has 9268 states and 27416 transitions. Word has length 39 [2021-06-12 20:41:37,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:37,617 INFO L482 AbstractCegarLoop]: Abstraction has 9268 states and 27416 transitions. [2021-06-12 20:41:37,617 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) [2021-06-12 20:41:37,617 INFO L276 IsEmpty]: Start isEmpty. Operand 9268 states and 27416 transitions. [2021-06-12 20:41:37,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:37,628 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:37,628 INFO L472 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] [2021-06-12 20:41:37,628 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-12 20:41:37,628 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:37,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:37,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1524483064, now seen corresponding path program 34 times [2021-06-12 20:41:37,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:37,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228299212] [2021-06-12 20:41:37,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:37,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:37,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:37,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228299212] [2021-06-12 20:41:37,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228299212] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:37,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:37,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-12 20:41:37,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489591209] [2021-06-12 20:41:37,702 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 20:41:37,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:37,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 20:41:37,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-12 20:41:37,703 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) [2021-06-12 20:41:38,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:38,011 INFO L93 Difference]: Finished difference Result 14208 states and 42268 transitions. [2021-06-12 20:41:38,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 20:41:38,011 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 [2021-06-12 20:41:38,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:38,031 INFO L225 Difference]: With dead ends: 14208 [2021-06-12 20:41:38,031 INFO L226 Difference]: Without dead ends: 14016 [2021-06-12 20:41:38,031 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 70.1ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-06-12 20:41:38,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14016 states. [2021-06-12 20:41:38,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14016 to 9164. [2021-06-12 20:41:38,163 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) [2021-06-12 20:41:38,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9164 states to 9164 states and 27130 transitions. [2021-06-12 20:41:38,179 INFO L78 Accepts]: Start accepts. Automaton has 9164 states and 27130 transitions. Word has length 39 [2021-06-12 20:41:38,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:38,179 INFO L482 AbstractCegarLoop]: Abstraction has 9164 states and 27130 transitions. [2021-06-12 20:41:38,179 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) [2021-06-12 20:41:38,179 INFO L276 IsEmpty]: Start isEmpty. Operand 9164 states and 27130 transitions. [2021-06-12 20:41:38,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:38,189 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:38,190 INFO L472 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] [2021-06-12 20:41:38,190 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-12 20:41:38,190 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:38,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:38,190 INFO L82 PathProgramCache]: Analyzing trace with hash 121958780, now seen corresponding path program 35 times [2021-06-12 20:41:38,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:38,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010966700] [2021-06-12 20:41:38,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:38,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:38,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:38,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:38,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010966700] [2021-06-12 20:41:38,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010966700] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:38,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:38,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-12 20:41:38,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873457613] [2021-06-12 20:41:38,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-12 20:41:38,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:38,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-12 20:41:38,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-12 20:41:38,251 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) [2021-06-12 20:41:38,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:38,704 INFO L93 Difference]: Finished difference Result 14134 states and 42012 transitions. [2021-06-12 20:41:38,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-12 20:41:38,704 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 [2021-06-12 20:41:38,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:38,732 INFO L225 Difference]: With dead ends: 14134 [2021-06-12 20:41:38,732 INFO L226 Difference]: Without dead ends: 13966 [2021-06-12 20:41:38,732 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 112.5ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-06-12 20:41:38,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13966 states. [2021-06-12 20:41:38,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13966 to 9158. [2021-06-12 20:41:38,914 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) [2021-06-12 20:41:38,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9158 states to 9158 states and 27094 transitions. [2021-06-12 20:41:38,930 INFO L78 Accepts]: Start accepts. Automaton has 9158 states and 27094 transitions. Word has length 39 [2021-06-12 20:41:38,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:38,931 INFO L482 AbstractCegarLoop]: Abstraction has 9158 states and 27094 transitions. [2021-06-12 20:41:38,931 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) [2021-06-12 20:41:38,931 INFO L276 IsEmpty]: Start isEmpty. Operand 9158 states and 27094 transitions. [2021-06-12 20:41:38,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:38,941 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:38,941 INFO L472 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] [2021-06-12 20:41:38,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-12 20:41:38,941 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:38,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:38,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1643590330, now seen corresponding path program 36 times [2021-06-12 20:41:38,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:38,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528492772] [2021-06-12 20:41:38,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:38,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:38,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:38,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528492772] [2021-06-12 20:41:38,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528492772] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:38,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:38,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 20:41:38,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613292069] [2021-06-12 20:41:38,995 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 20:41:38,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:38,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 20:41:38,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:41:38,995 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) [2021-06-12 20:41:39,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:39,252 INFO L93 Difference]: Finished difference Result 14594 states and 43056 transitions. [2021-06-12 20:41:39,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 20:41:39,253 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 [2021-06-12 20:41:39,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:39,279 INFO L225 Difference]: With dead ends: 14594 [2021-06-12 20:41:39,279 INFO L226 Difference]: Without dead ends: 14466 [2021-06-12 20:41:39,280 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 47.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-12 20:41:39,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14466 states. [2021-06-12 20:41:39,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14466 to 9094. [2021-06-12 20:41:39,449 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) [2021-06-12 20:41:39,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9094 states to 9094 states and 26818 transitions. [2021-06-12 20:41:39,464 INFO L78 Accepts]: Start accepts. Automaton has 9094 states and 26818 transitions. Word has length 39 [2021-06-12 20:41:39,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:39,464 INFO L482 AbstractCegarLoop]: Abstraction has 9094 states and 26818 transitions. [2021-06-12 20:41:39,464 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) [2021-06-12 20:41:39,465 INFO L276 IsEmpty]: Start isEmpty. Operand 9094 states and 26818 transitions. [2021-06-12 20:41:39,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:39,475 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:39,475 INFO L472 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] [2021-06-12 20:41:39,475 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-12 20:41:39,475 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:39,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:39,475 INFO L82 PathProgramCache]: Analyzing trace with hash -245711174, now seen corresponding path program 37 times [2021-06-12 20:41:39,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:39,475 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250828679] [2021-06-12 20:41:39,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:39,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:39,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:39,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250828679] [2021-06-12 20:41:39,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250828679] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:39,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:39,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 20:41:39,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517485949] [2021-06-12 20:41:39,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 20:41:39,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:39,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 20:41:39,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:41:39,520 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) [2021-06-12 20:41:39,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:39,773 INFO L93 Difference]: Finished difference Result 14494 states and 42702 transitions. [2021-06-12 20:41:39,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-12 20:41:39,773 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 [2021-06-12 20:41:39,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:39,793 INFO L225 Difference]: With dead ends: 14494 [2021-06-12 20:41:39,793 INFO L226 Difference]: Without dead ends: 14022 [2021-06-12 20:41:39,794 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 55.5ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-06-12 20:41:39,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14022 states. [2021-06-12 20:41:39,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14022 to 8890. [2021-06-12 20:41:39,918 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) [2021-06-12 20:41:39,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8890 states to 8890 states and 26110 transitions. [2021-06-12 20:41:39,932 INFO L78 Accepts]: Start accepts. Automaton has 8890 states and 26110 transitions. Word has length 39 [2021-06-12 20:41:39,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:39,932 INFO L482 AbstractCegarLoop]: Abstraction has 8890 states and 26110 transitions. [2021-06-12 20:41:39,932 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) [2021-06-12 20:41:39,932 INFO L276 IsEmpty]: Start isEmpty. Operand 8890 states and 26110 transitions. [2021-06-12 20:41:39,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:39,943 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:39,943 INFO L472 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] [2021-06-12 20:41:39,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-12 20:41:39,943 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:39,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:39,943 INFO L82 PathProgramCache]: Analyzing trace with hash -992696872, now seen corresponding path program 38 times [2021-06-12 20:41:39,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:39,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39246480] [2021-06-12 20:41:39,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:39,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:39,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:39,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39246480] [2021-06-12 20:41:39,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39246480] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:39,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:39,993 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-12 20:41:39,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927345372] [2021-06-12 20:41:39,994 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 20:41:39,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:39,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 20:41:39,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-12 20:41:39,995 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) [2021-06-12 20:41:40,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:40,301 INFO L93 Difference]: Finished difference Result 14086 states and 41514 transitions. [2021-06-12 20:41:40,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 20:41:40,302 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 [2021-06-12 20:41:40,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:40,321 INFO L225 Difference]: With dead ends: 14086 [2021-06-12 20:41:40,321 INFO L226 Difference]: Without dead ends: 13386 [2021-06-12 20:41:40,321 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 69.7ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-06-12 20:41:40,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13386 states. [2021-06-12 20:41:40,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13386 to 8674. [2021-06-12 20:41:40,442 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) [2021-06-12 20:41:40,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8674 states to 8674 states and 25546 transitions. [2021-06-12 20:41:40,458 INFO L78 Accepts]: Start accepts. Automaton has 8674 states and 25546 transitions. Word has length 39 [2021-06-12 20:41:40,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:40,458 INFO L482 AbstractCegarLoop]: Abstraction has 8674 states and 25546 transitions. [2021-06-12 20:41:40,458 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) [2021-06-12 20:41:40,458 INFO L276 IsEmpty]: Start isEmpty. Operand 8674 states and 25546 transitions. [2021-06-12 20:41:40,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:40,468 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:40,468 INFO L472 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] [2021-06-12 20:41:40,468 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-12 20:41:40,468 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:40,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:40,469 INFO L82 PathProgramCache]: Analyzing trace with hash 2135186268, now seen corresponding path program 39 times [2021-06-12 20:41:40,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:40,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182082465] [2021-06-12 20:41:40,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:40,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:40,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:40,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182082465] [2021-06-12 20:41:40,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182082465] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:40,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:40,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-12 20:41:40,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902989762] [2021-06-12 20:41:40,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-12 20:41:40,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:40,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-12 20:41:40,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-12 20:41:40,534 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) [2021-06-12 20:41:40,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:40,937 INFO L93 Difference]: Finished difference Result 13828 states and 40806 transitions. [2021-06-12 20:41:40,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-12 20:41:40,938 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 [2021-06-12 20:41:40,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:40,956 INFO L225 Difference]: With dead ends: 13828 [2021-06-12 20:41:40,956 INFO L226 Difference]: Without dead ends: 13182 [2021-06-12 20:41:40,957 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 127.5ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-06-12 20:41:40,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13182 states. [2021-06-12 20:41:41,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13182 to 8470. [2021-06-12 20:41:41,072 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) [2021-06-12 20:41:41,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8470 states to 8470 states and 25108 transitions. [2021-06-12 20:41:41,086 INFO L78 Accepts]: Start accepts. Automaton has 8470 states and 25108 transitions. Word has length 39 [2021-06-12 20:41:41,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:41,086 INFO L482 AbstractCegarLoop]: Abstraction has 8470 states and 25108 transitions. [2021-06-12 20:41:41,087 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) [2021-06-12 20:41:41,087 INFO L276 IsEmpty]: Start isEmpty. Operand 8470 states and 25108 transitions. [2021-06-12 20:41:41,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:41,096 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:41,096 INFO L472 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] [2021-06-12 20:41:41,096 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-12 20:41:41,096 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:41,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:41,096 INFO L82 PathProgramCache]: Analyzing trace with hash -695140544, now seen corresponding path program 40 times [2021-06-12 20:41:41,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:41,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427688971] [2021-06-12 20:41:41,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:41,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:41,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:41,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427688971] [2021-06-12 20:41:41,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427688971] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:41,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:41,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-12 20:41:41,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107237383] [2021-06-12 20:41:41,152 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-12 20:41:41,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:41,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-12 20:41:41,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-12 20:41:41,153 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) [2021-06-12 20:41:41,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:41,561 INFO L93 Difference]: Finished difference Result 13371 states and 39611 transitions. [2021-06-12 20:41:41,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-12 20:41:41,561 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 [2021-06-12 20:41:41,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:41,580 INFO L225 Difference]: With dead ends: 13371 [2021-06-12 20:41:41,580 INFO L226 Difference]: Without dead ends: 12735 [2021-06-12 20:41:41,581 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 103.2ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-06-12 20:41:41,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12735 states. [2021-06-12 20:41:41,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12735 to 7590. [2021-06-12 20:41:41,708 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) [2021-06-12 20:41:41,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7590 states to 7590 states and 22467 transitions. [2021-06-12 20:41:41,722 INFO L78 Accepts]: Start accepts. Automaton has 7590 states and 22467 transitions. Word has length 39 [2021-06-12 20:41:41,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:41,723 INFO L482 AbstractCegarLoop]: Abstraction has 7590 states and 22467 transitions. [2021-06-12 20:41:41,723 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) [2021-06-12 20:41:41,723 INFO L276 IsEmpty]: Start isEmpty. Operand 7590 states and 22467 transitions. [2021-06-12 20:41:41,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:41,731 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:41,731 INFO L472 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] [2021-06-12 20:41:41,731 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-12 20:41:41,732 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:41,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:41,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1794340302, now seen corresponding path program 41 times [2021-06-12 20:41:41,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:41,732 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930969921] [2021-06-12 20:41:41,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:41,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:41,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:41,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930969921] [2021-06-12 20:41:41,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930969921] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:41,778 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:41,778 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 20:41:41,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117707951] [2021-06-12 20:41:41,778 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 20:41:41,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:41,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 20:41:41,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:41:41,779 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) [2021-06-12 20:41:42,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:42,108 INFO L93 Difference]: Finished difference Result 12745 states and 37674 transitions. [2021-06-12 20:41:42,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-12 20:41:42,109 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 [2021-06-12 20:41:42,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:42,133 INFO L225 Difference]: With dead ends: 12745 [2021-06-12 20:41:42,133 INFO L226 Difference]: Without dead ends: 12601 [2021-06-12 20:41:42,134 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 60.5ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-06-12 20:41:42,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12601 states. [2021-06-12 20:41:42,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12601 to 7346. [2021-06-12 20:41:42,256 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) [2021-06-12 20:41:42,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7346 states to 7346 states and 21595 transitions. [2021-06-12 20:41:42,268 INFO L78 Accepts]: Start accepts. Automaton has 7346 states and 21595 transitions. Word has length 39 [2021-06-12 20:41:42,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:42,268 INFO L482 AbstractCegarLoop]: Abstraction has 7346 states and 21595 transitions. [2021-06-12 20:41:42,268 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) [2021-06-12 20:41:42,268 INFO L276 IsEmpty]: Start isEmpty. Operand 7346 states and 21595 transitions. [2021-06-12 20:41:42,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:42,276 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:42,276 INFO L472 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] [2021-06-12 20:41:42,277 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-12 20:41:42,277 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:42,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:42,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1613437490, now seen corresponding path program 42 times [2021-06-12 20:41:42,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:42,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383496648] [2021-06-12 20:41:42,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:42,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:42,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:42,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383496648] [2021-06-12 20:41:42,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383496648] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:42,330 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:42,330 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-12 20:41:42,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983707631] [2021-06-12 20:41:42,330 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 20:41:42,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:42,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 20:41:42,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-12 20:41:42,331 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) [2021-06-12 20:41:42,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:42,666 INFO L93 Difference]: Finished difference Result 11821 states and 34814 transitions. [2021-06-12 20:41:42,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 20:41:42,666 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 [2021-06-12 20:41:42,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:42,681 INFO L225 Difference]: With dead ends: 11821 [2021-06-12 20:41:42,681 INFO L226 Difference]: Without dead ends: 11629 [2021-06-12 20:41:42,681 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 81.8ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-06-12 20:41:42,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11629 states. [2021-06-12 20:41:42,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11629 to 7242. [2021-06-12 20:41:42,779 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) [2021-06-12 20:41:42,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7242 states to 7242 states and 21309 transitions. [2021-06-12 20:41:42,791 INFO L78 Accepts]: Start accepts. Automaton has 7242 states and 21309 transitions. Word has length 39 [2021-06-12 20:41:42,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:42,791 INFO L482 AbstractCegarLoop]: Abstraction has 7242 states and 21309 transitions. [2021-06-12 20:41:42,791 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) [2021-06-12 20:41:42,791 INFO L276 IsEmpty]: Start isEmpty. Operand 7242 states and 21309 transitions. [2021-06-12 20:41:42,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:42,799 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:42,799 INFO L472 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] [2021-06-12 20:41:42,799 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-12 20:41:42,799 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:42,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:42,799 INFO L82 PathProgramCache]: Analyzing trace with hash -798629012, now seen corresponding path program 43 times [2021-06-12 20:41:42,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:42,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688450931] [2021-06-12 20:41:42,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:42,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:42,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:42,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688450931] [2021-06-12 20:41:42,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688450931] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:42,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:42,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-12 20:41:42,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131101654] [2021-06-12 20:41:42,856 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-12 20:41:42,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:42,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-12 20:41:42,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-12 20:41:42,857 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) [2021-06-12 20:41:43,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:43,273 INFO L93 Difference]: Finished difference Result 11315 states and 33296 transitions. [2021-06-12 20:41:43,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-12 20:41:43,273 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 [2021-06-12 20:41:43,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:43,288 INFO L225 Difference]: With dead ends: 11315 [2021-06-12 20:41:43,288 INFO L226 Difference]: Without dead ends: 11099 [2021-06-12 20:41:43,289 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 112.5ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-06-12 20:41:43,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11099 states. [2021-06-12 20:41:43,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11099 to 7008. [2021-06-12 20:41:43,406 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) [2021-06-12 20:41:43,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7008 states to 7008 states and 20842 transitions. [2021-06-12 20:41:43,421 INFO L78 Accepts]: Start accepts. Automaton has 7008 states and 20842 transitions. Word has length 39 [2021-06-12 20:41:43,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:43,421 INFO L482 AbstractCegarLoop]: Abstraction has 7008 states and 20842 transitions. [2021-06-12 20:41:43,421 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) [2021-06-12 20:41:43,421 INFO L276 IsEmpty]: Start isEmpty. Operand 7008 states and 20842 transitions. [2021-06-12 20:41:43,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:43,430 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:43,430 INFO L472 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] [2021-06-12 20:41:43,431 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-12 20:41:43,431 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:43,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:43,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1518942532, now seen corresponding path program 44 times [2021-06-12 20:41:43,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:43,431 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134912111] [2021-06-12 20:41:43,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:43,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:43,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:43,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134912111] [2021-06-12 20:41:43,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134912111] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:43,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:43,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-12 20:41:43,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952034041] [2021-06-12 20:41:43,457 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 20:41:43,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:43,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 20:41:43,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-12 20:41:43,458 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) [2021-06-12 20:41:43,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:43,558 INFO L93 Difference]: Finished difference Result 9444 states and 26929 transitions. [2021-06-12 20:41:43,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-12 20:41:43,559 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 [2021-06-12 20:41:43,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:43,569 INFO L225 Difference]: With dead ends: 9444 [2021-06-12 20:41:43,570 INFO L226 Difference]: Without dead ends: 8824 [2021-06-12 20:41:43,570 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.2ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:41:43,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8824 states. [2021-06-12 20:41:43,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8824 to 4125. [2021-06-12 20:41:43,641 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) [2021-06-12 20:41:43,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4125 states to 4125 states and 11994 transitions. [2021-06-12 20:41:43,648 INFO L78 Accepts]: Start accepts. Automaton has 4125 states and 11994 transitions. Word has length 39 [2021-06-12 20:41:43,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:43,648 INFO L482 AbstractCegarLoop]: Abstraction has 4125 states and 11994 transitions. [2021-06-12 20:41:43,648 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) [2021-06-12 20:41:43,648 INFO L276 IsEmpty]: Start isEmpty. Operand 4125 states and 11994 transitions. [2021-06-12 20:41:43,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:43,652 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:43,652 INFO L472 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] [2021-06-12 20:41:43,652 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-12 20:41:43,652 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:43,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:43,653 INFO L82 PathProgramCache]: Analyzing trace with hash -236999486, now seen corresponding path program 45 times [2021-06-12 20:41:43,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:43,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752894864] [2021-06-12 20:41:43,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:43,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:43,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:43,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752894864] [2021-06-12 20:41:43,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752894864] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:43,699 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:43,699 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 20:41:43,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796899444] [2021-06-12 20:41:43,699 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 20:41:43,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:43,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 20:41:43,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:41:43,700 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) [2021-06-12 20:41:43,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:43,876 INFO L93 Difference]: Finished difference Result 6107 states and 16719 transitions. [2021-06-12 20:41:43,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 20:41:43,877 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 [2021-06-12 20:41:43,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:43,882 INFO L225 Difference]: With dead ends: 6107 [2021-06-12 20:41:43,882 INFO L226 Difference]: Without dead ends: 4693 [2021-06-12 20:41:43,884 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 47.1ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-12 20:41:43,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4693 states. [2021-06-12 20:41:43,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4693 to 2542. [2021-06-12 20:41:43,923 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) [2021-06-12 20:41:43,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 7081 transitions. [2021-06-12 20:41:43,927 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 7081 transitions. Word has length 39 [2021-06-12 20:41:43,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:43,927 INFO L482 AbstractCegarLoop]: Abstraction has 2542 states and 7081 transitions. [2021-06-12 20:41:43,927 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) [2021-06-12 20:41:43,927 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 7081 transitions. [2021-06-12 20:41:43,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:43,930 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:43,930 INFO L472 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] [2021-06-12 20:41:43,930 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-12 20:41:43,930 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:43,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:43,930 INFO L82 PathProgramCache]: Analyzing trace with hash -634778652, now seen corresponding path program 46 times [2021-06-12 20:41:43,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:43,930 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952270841] [2021-06-12 20:41:43,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:43,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:43,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:43,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952270841] [2021-06-12 20:41:43,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952270841] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:43,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:43,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-12 20:41:43,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975132732] [2021-06-12 20:41:43,981 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 20:41:43,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:43,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 20:41:43,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-12 20:41:43,982 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) [2021-06-12 20:41:44,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:44,196 INFO L93 Difference]: Finished difference Result 1862 states and 4307 transitions. [2021-06-12 20:41:44,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 20:41:44,196 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 [2021-06-12 20:41:44,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:44,197 INFO L225 Difference]: With dead ends: 1862 [2021-06-12 20:41:44,197 INFO L226 Difference]: Without dead ends: 648 [2021-06-12 20:41:44,197 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 74.2ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-12 20:41:44,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-06-12 20:41:44,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 456. [2021-06-12 20:41:44,202 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) [2021-06-12 20:41:44,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1107 transitions. [2021-06-12 20:41:44,203 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1107 transitions. Word has length 39 [2021-06-12 20:41:44,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:44,203 INFO L482 AbstractCegarLoop]: Abstraction has 456 states and 1107 transitions. [2021-06-12 20:41:44,203 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) [2021-06-12 20:41:44,203 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1107 transitions. [2021-06-12 20:41:44,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 20:41:44,203 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:41:44,203 INFO L472 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] [2021-06-12 20:41:44,203 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-12 20:41:44,204 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-12 20:41:44,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:41:44,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1819342244, now seen corresponding path program 47 times [2021-06-12 20:41:44,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:41:44,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176203889] [2021-06-12 20:41:44,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:41:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:41:44,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:41:44,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:41:44,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176203889] [2021-06-12 20:41:44,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176203889] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:41:44,265 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:41:44,265 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-12 20:41:44,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432292628] [2021-06-12 20:41:44,265 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-12 20:41:44,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:41:44,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-12 20:41:44,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-12 20:41:44,266 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) [2021-06-12 20:41:44,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:41:44,435 INFO L93 Difference]: Finished difference Result 391 states and 811 transitions. [2021-06-12 20:41:44,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-12 20:41:44,436 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 [2021-06-12 20:41:44,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:41:44,436 INFO L225 Difference]: With dead ends: 391 [2021-06-12 20:41:44,436 INFO L226 Difference]: Without dead ends: 0 [2021-06-12 20:41:44,436 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 95.5ms TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-06-12 20:41:44,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-12 20:41:44,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-12 20:41:44,436 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) [2021-06-12 20:41:44,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-12 20:41:44,437 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2021-06-12 20:41:44,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:41:44,437 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-12 20:41:44,437 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) [2021-06-12 20:41:44,437 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-12 20:41:44,437 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 20:41:44,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-12 20:41:44,439 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-12 20:41:44,441 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.06 08:41:44 BasicIcfg [2021-06-12 20:41:44,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-12 20:41:44,442 INFO L168 Benchmark]: Toolchain (without parser) took 45285.68 ms. Allocated memory was 204.5 MB in the beginning and 7.9 GB in the end (delta: 7.7 GB). Free memory was 183.9 MB in the beginning and 1.7 GB in the end (delta: -1.5 GB). Peak memory consumption was 6.1 GB. Max. memory is 8.0 GB. [2021-06-12 20:41:44,442 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 204.5 MB. Free memory is still 185.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 20:41:44,442 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.81 ms. Allocated memory is still 204.5 MB. Free memory was 183.8 MB in the beginning and 182.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 20:41:44,442 INFO L168 Benchmark]: Boogie Preprocessor took 20.36 ms. Allocated memory is still 204.5 MB. Free memory was 182.4 MB in the beginning and 181.4 MB in the end (delta: 980.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-12 20:41:44,442 INFO L168 Benchmark]: RCFGBuilder took 284.01 ms. Allocated memory is still 204.5 MB. Free memory was 181.3 MB in the beginning and 166.1 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-06-12 20:41:44,442 INFO L168 Benchmark]: TraceAbstraction took 44945.52 ms. Allocated memory was 204.5 MB in the beginning and 7.9 GB in the end (delta: 7.7 GB). Free memory was 165.6 MB in the beginning and 1.7 GB in the end (delta: -1.5 GB). Peak memory consumption was 6.1 GB. Max. memory is 8.0 GB. [2021-06-12 20:41:44,443 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 204.5 MB. Free memory is still 185.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 29.81 ms. Allocated memory is still 204.5 MB. Free memory was 183.8 MB in the beginning and 182.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 20.36 ms. Allocated memory is still 204.5 MB. Free memory was 182.4 MB in the beginning and 181.4 MB in the end (delta: 980.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 284.01 ms. Allocated memory is still 204.5 MB. Free memory was 181.3 MB in the beginning and 166.1 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 44945.52 ms. Allocated memory was 204.5 MB in the beginning and 7.9 GB in the end (delta: 7.7 GB). Free memory was 165.6 MB in the beginning and 1.7 GB in the end (delta: -1.5 GB). Peak memory consumption was 6.1 GB. Max. memory is 8.0 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 for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 11 procedures, 83 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 44783.4ms, OverallIterations: 47, TraceHistogramMax: 1, EmptinessCheckTime: 1739.4ms, AutomataDifference: 19222.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 799.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3516 SDtfs, 5072 SDslu, 12592 SDs, 0 SdLazy, 13314 SolverSat, 2088 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6618.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 574 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 449 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 2317.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24666occurred in iteration=11, InterpolantAutomatonStates: 453, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 20089.2ms AutomataMinimizationTime, 47 MinimizatonAttempts, 380099 StatesRemovedByMinimization, 44 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 58.2ms SsaConstructionTime, 285.0ms SatisfiabilityAnalysisTime, 2275.1ms InterpolantComputationTime, 1833 NumberOfCodeBlocks, 1833 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 1786 ConstructedInterpolants, 0 QuantifiedInterpolants, 5196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 47 InterpolantComputations, 47 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...