/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d47b94137d5c7dd60722882962a90fb345e61909-d47b941 [2021-05-03 14:57:58,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-03 14:57:58,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-03 14:57:58,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-03 14:57:58,849 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 [2021-05-03 14:57:58,869 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-03 14:57:58,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-03 14:57:58,869 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-03 14:57:58,869 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-03 14:57:58,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-03 14:57:58,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-03 14:57:58,871 INFO L138 SettingsManager]: * Use SBE=true [2021-05-03 14:57:58,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-03 14:57:58,871 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-03 14:57:58,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-03 14:57:58,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-03 14:57:58,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-03 14:57:58,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-03 14:57:58,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-03 14:57:58,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-03 14:57:58,872 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-03 14:57:58,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-03 14:57:58,872 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-03 14:57:58,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-03 14:57:58,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-03 14:57:58,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-03 14:57:58,873 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-03 14:57:58,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-03 14:57:58,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-03 14:57:58,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-03 14:57:58,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-03 14:57:58,874 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-03 14:57:58,874 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-03 14:57:58,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-03 14:57:58,874 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-03 14:57:58,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-03 14:57:58,875 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-03 14:57:59,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-03 14:57:59,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-03 14:57:59,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-03 14:57:59,303 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-05-03 14:57:59,306 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-05-03 14:57:59,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl [2021-05-03 14:57:59,307 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl' [2021-05-03 14:57:59,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-03 14:57:59,339 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-03 14:57:59,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-03 14:57:59,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-03 14:57:59,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-03 14:57:59,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:57:59" (1/1) ... [2021-05-03 14:57:59,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:57:59" (1/1) ... [2021-05-03 14:57:59,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-03 14:57:59,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-03 14:57:59,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-03 14:57:59,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-03 14:57:59,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:57:59" (1/1) ... [2021-05-03 14:57:59,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:57:59" (1/1) ... [2021-05-03 14:57:59,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:57:59" (1/1) ... [2021-05-03 14:57:59,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:57:59" (1/1) ... [2021-05-03 14:57:59,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:57:59" (1/1) ... [2021-05-03 14:57:59,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:57:59" (1/1) ... [2021-05-03 14:57:59,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:57:59" (1/1) ... [2021-05-03 14:57:59,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-03 14:57:59,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-03 14:57:59,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-03 14:57:59,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-03 14:57:59,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:57:59" (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 [2021-05-03 14:57:59,463 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-05-03 14:57:59,464 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-05-03 14:57:59,464 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-05-03 14:57:59,464 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-05-03 14:57:59,464 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-05-03 14:57:59,464 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-05-03 14:57:59,464 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-05-03 14:57:59,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-03 14:57:59,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-03 14:57:59,465 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-05-03 14:57:59,465 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-05-03 14:57:59,465 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-05-03 14:57:59,467 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-03 14:57:59,650 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-03 14:57:59,650 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-03 14:57:59,652 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 02:57:59 BoogieIcfgContainer [2021-05-03 14:57:59,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-03 14:57:59,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-03 14:57:59,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-03 14:57:59,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-03 14:57:59,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:57:59" (1/2) ... [2021-05-03 14:57:59,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5967acf8 and model type bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 02:57:59, skipping insertion in model container [2021-05-03 14:57:59,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 02:57:59" (2/2) ... [2021-05-03 14:57:59,659 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-3.wvr.bpl [2021-05-03 14:57:59,664 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-03 14:57:59,664 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-03 14:57:59,668 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-03 14:57:59,669 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-03 14:57:59,711 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-05-03 14:57:59,734 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-05-03 14:57:59,751 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-03 14:57:59,751 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-03 14:57:59,751 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-03 14:57:59,752 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-03 14:57:59,752 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-03 14:57:59,752 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-03 14:57:59,752 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-03 14:57:59,752 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-03 14:57:59,762 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 53 transitions, 130 flow [2021-05-03 14:57:59,981 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3171 states, 3169 states have (on average 2.7847901546229092) internal successors, (8825), 3170 states have internal predecessors, (8825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:57:59,993 INFO L276 IsEmpty]: Start isEmpty. Operand has 3171 states, 3169 states have (on average 2.7847901546229092) internal successors, (8825), 3170 states have internal predecessors, (8825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:00,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:00,027 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:00,028 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:00,029 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:00,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:00,034 INFO L82 PathProgramCache]: Analyzing trace with hash 21714732, now seen corresponding path program 1 times [2021-05-03 14:58:00,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:00,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309981767] [2021-05-03 14:58:00,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:00,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:00,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309981767] [2021-05-03 14:58:00,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:00,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-03 14:58:00,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989453187] [2021-05-03 14:58:00,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-03 14:58:00,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:00,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-03 14:58:00,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-05-03 14:58:00,459 INFO L87 Difference]: Start difference. First operand has 3171 states, 3169 states have (on average 2.7847901546229092) internal successors, (8825), 3170 states have internal predecessors, (8825), 0 states have call successors, (0), 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 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:00,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:00,816 INFO L93 Difference]: Finished difference Result 4745 states and 13303 transitions. [2021-05-03 14:58:00,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-03 14:58:00,819 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:00,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:00,861 INFO L225 Difference]: With dead ends: 4745 [2021-05-03 14:58:00,861 INFO L226 Difference]: Without dead ends: 4745 [2021-05-03 14:58:00,863 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 106.3ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-05-03 14:58:00,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4745 states. [2021-05-03 14:58:01,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4745 to 3801. [2021-05-03 14:58:01,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3801 states, 3800 states have (on average 2.7786842105263156) internal successors, (10559), 3800 states have internal predecessors, (10559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:01,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3801 states to 3801 states and 10559 transitions. [2021-05-03 14:58:01,161 INFO L78 Accepts]: Start accepts. Automaton has 3801 states and 10559 transitions. Word has length 48 [2021-05-03 14:58:01,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:01,161 INFO L480 AbstractCegarLoop]: Abstraction has 3801 states and 10559 transitions. [2021-05-03 14:58:01,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:01,162 INFO L276 IsEmpty]: Start isEmpty. Operand 3801 states and 10559 transitions. [2021-05-03 14:58:01,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:01,172 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:01,172 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:01,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-03 14:58:01,173 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:01,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:01,174 INFO L82 PathProgramCache]: Analyzing trace with hash -2032039124, now seen corresponding path program 2 times [2021-05-03 14:58:01,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:01,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35062243] [2021-05-03 14:58:01,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:01,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:01,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35062243] [2021-05-03 14:58:01,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:01,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 14:58:01,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542114080] [2021-05-03 14:58:01,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 14:58:01,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:01,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 14:58:01,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:01,358 INFO L87 Difference]: Start difference. First operand 3801 states and 10559 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:01,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:01,600 INFO L93 Difference]: Finished difference Result 4934 states and 13232 transitions. [2021-05-03 14:58:01,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-03 14:58:01,601 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:01,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:01,622 INFO L225 Difference]: With dead ends: 4934 [2021-05-03 14:58:01,623 INFO L226 Difference]: Without dead ends: 4747 [2021-05-03 14:58:01,625 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 194.3ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-05-03 14:58:01,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4747 states. [2021-05-03 14:58:01,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4747 to 3846. [2021-05-03 14:58:01,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3846 states, 3845 states have (on average 2.7667100130039013) internal successors, (10638), 3845 states have internal predecessors, (10638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:01,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3846 states to 3846 states and 10638 transitions. [2021-05-03 14:58:01,813 INFO L78 Accepts]: Start accepts. Automaton has 3846 states and 10638 transitions. Word has length 48 [2021-05-03 14:58:01,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:01,814 INFO L480 AbstractCegarLoop]: Abstraction has 3846 states and 10638 transitions. [2021-05-03 14:58:01,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:01,814 INFO L276 IsEmpty]: Start isEmpty. Operand 3846 states and 10638 transitions. [2021-05-03 14:58:01,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:01,826 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:01,827 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:01,827 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-03 14:58:01,827 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:01,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:01,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1542847906, now seen corresponding path program 3 times [2021-05-03 14:58:01,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:01,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973042664] [2021-05-03 14:58:01,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:02,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:02,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973042664] [2021-05-03 14:58:02,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:02,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-03 14:58:02,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305863684] [2021-05-03 14:58:02,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-03 14:58:02,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:02,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-03 14:58:02,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-05-03 14:58:02,065 INFO L87 Difference]: Start difference. First operand 3846 states and 10638 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:02,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:02,352 INFO L93 Difference]: Finished difference Result 5928 states and 16308 transitions. [2021-05-03 14:58:02,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-03 14:58:02,353 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:02,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:02,377 INFO L225 Difference]: With dead ends: 5928 [2021-05-03 14:58:02,378 INFO L226 Difference]: Without dead ends: 5892 [2021-05-03 14:58:02,378 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 95.7ms TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-05-03 14:58:02,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5892 states. [2021-05-03 14:58:02,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5892 to 4234. [2021-05-03 14:58:02,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4234 states, 4233 states have (on average 2.752421450507914) internal successors, (11651), 4233 states have internal predecessors, (11651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:02,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4234 states to 4234 states and 11651 transitions. [2021-05-03 14:58:02,528 INFO L78 Accepts]: Start accepts. Automaton has 4234 states and 11651 transitions. Word has length 48 [2021-05-03 14:58:02,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:02,528 INFO L480 AbstractCegarLoop]: Abstraction has 4234 states and 11651 transitions. [2021-05-03 14:58:02,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:02,529 INFO L276 IsEmpty]: Start isEmpty. Operand 4234 states and 11651 transitions. [2021-05-03 14:58:02,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:02,538 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:02,538 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:02,538 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-03 14:58:02,539 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:02,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:02,539 INFO L82 PathProgramCache]: Analyzing trace with hash -698609762, now seen corresponding path program 4 times [2021-05-03 14:58:02,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:02,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34617624] [2021-05-03 14:58:02,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:02,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:02,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:02,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34617624] [2021-05-03 14:58:02,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:02,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-03 14:58:02,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609597287] [2021-05-03 14:58:02,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-03 14:58:02,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:02,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-03 14:58:02,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-05-03 14:58:02,704 INFO L87 Difference]: Start difference. First operand 4234 states and 11651 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:02,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:02,996 INFO L93 Difference]: Finished difference Result 5769 states and 15869 transitions. [2021-05-03 14:58:02,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 14:58:02,997 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:03,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:03,067 INFO L225 Difference]: With dead ends: 5769 [2021-05-03 14:58:03,067 INFO L226 Difference]: Without dead ends: 5769 [2021-05-03 14:58:03,067 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 72.0ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-05-03 14:58:03,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5769 states. [2021-05-03 14:58:03,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5769 to 4198. [2021-05-03 14:58:03,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4198 states, 4197 states have (on average 2.74815344293543) internal successors, (11534), 4197 states have internal predecessors, (11534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:03,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4198 states to 4198 states and 11534 transitions. [2021-05-03 14:58:03,260 INFO L78 Accepts]: Start accepts. Automaton has 4198 states and 11534 transitions. Word has length 48 [2021-05-03 14:58:03,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:03,261 INFO L480 AbstractCegarLoop]: Abstraction has 4198 states and 11534 transitions. [2021-05-03 14:58:03,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:03,262 INFO L276 IsEmpty]: Start isEmpty. Operand 4198 states and 11534 transitions. [2021-05-03 14:58:03,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:03,272 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:03,273 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:03,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-03 14:58:03,273 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:03,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:03,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1857395998, now seen corresponding path program 5 times [2021-05-03 14:58:03,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:03,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318530565] [2021-05-03 14:58:03,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:03,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:03,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318530565] [2021-05-03 14:58:03,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:03,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 14:58:03,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063905858] [2021-05-03 14:58:03,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 14:58:03,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:03,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 14:58:03,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:03,409 INFO L87 Difference]: Start difference. First operand 4198 states and 11534 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:03,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:03,596 INFO L93 Difference]: Finished difference Result 5333 states and 14205 transitions. [2021-05-03 14:58:03,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-03 14:58:03,597 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:03,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:03,609 INFO L225 Difference]: With dead ends: 5333 [2021-05-03 14:58:03,609 INFO L226 Difference]: Without dead ends: 4805 [2021-05-03 14:58:03,609 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 132.0ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-05-03 14:58:03,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4805 states. [2021-05-03 14:58:03,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4805 to 3905. [2021-05-03 14:58:03,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3905 states, 3904 states have (on average 2.7482069672131146) internal successors, (10729), 3904 states have internal predecessors, (10729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:03,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3905 states to 3905 states and 10729 transitions. [2021-05-03 14:58:03,752 INFO L78 Accepts]: Start accepts. Automaton has 3905 states and 10729 transitions. Word has length 48 [2021-05-03 14:58:03,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:03,752 INFO L480 AbstractCegarLoop]: Abstraction has 3905 states and 10729 transitions. [2021-05-03 14:58:03,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:03,752 INFO L276 IsEmpty]: Start isEmpty. Operand 3905 states and 10729 transitions. [2021-05-03 14:58:03,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:03,761 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:03,761 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:03,761 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-03 14:58:03,762 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:03,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:03,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1271126176, now seen corresponding path program 6 times [2021-05-03 14:58:03,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:03,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777708119] [2021-05-03 14:58:03,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:03,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:03,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777708119] [2021-05-03 14:58:03,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:03,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-03 14:58:03,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430429332] [2021-05-03 14:58:03,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-03 14:58:03,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:03,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-03 14:58:03,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 14:58:03,780 INFO L87 Difference]: Start difference. First operand 3905 states and 10729 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:03,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:03,802 INFO L93 Difference]: Finished difference Result 3881 states and 10519 transitions. [2021-05-03 14:58:03,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 14:58:03,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:03,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:03,810 INFO L225 Difference]: With dead ends: 3881 [2021-05-03 14:58:03,810 INFO L226 Difference]: Without dead ends: 3869 [2021-05-03 14:58:03,810 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 14:58:03,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3869 states. [2021-05-03 14:58:03,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3869 to 3869. [2021-05-03 14:58:03,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3869 states, 3868 states have (on average 2.7109617373319543) internal successors, (10486), 3868 states have internal predecessors, (10486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:03,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3869 states to 3869 states and 10486 transitions. [2021-05-03 14:58:03,945 INFO L78 Accepts]: Start accepts. Automaton has 3869 states and 10486 transitions. Word has length 48 [2021-05-03 14:58:03,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:03,945 INFO L480 AbstractCegarLoop]: Abstraction has 3869 states and 10486 transitions. [2021-05-03 14:58:03,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:03,945 INFO L276 IsEmpty]: Start isEmpty. Operand 3869 states and 10486 transitions. [2021-05-03 14:58:03,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:03,954 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:03,954 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:03,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-03 14:58:03,954 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:03,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:03,955 INFO L82 PathProgramCache]: Analyzing trace with hash -3563124, now seen corresponding path program 7 times [2021-05-03 14:58:03,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:03,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382154733] [2021-05-03 14:58:03,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:04,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:04,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382154733] [2021-05-03 14:58:04,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:04,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-03 14:58:04,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487952346] [2021-05-03 14:58:04,070 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-03 14:58:04,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:04,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-03 14:58:04,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-05-03 14:58:04,071 INFO L87 Difference]: Start difference. First operand 3869 states and 10486 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:04,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:04,350 INFO L93 Difference]: Finished difference Result 5612 states and 15102 transitions. [2021-05-03 14:58:04,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-03 14:58:04,351 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:04,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:04,363 INFO L225 Difference]: With dead ends: 5612 [2021-05-03 14:58:04,364 INFO L226 Difference]: Without dead ends: 5576 [2021-05-03 14:58:04,364 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 112.6ms TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-05-03 14:58:04,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5576 states. [2021-05-03 14:58:04,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5576 to 4279. [2021-05-03 14:58:04,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4279 states, 4278 states have (on average 2.6956521739130435) internal successors, (11532), 4278 states have internal predecessors, (11532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:04,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4279 states to 4279 states and 11532 transitions. [2021-05-03 14:58:04,502 INFO L78 Accepts]: Start accepts. Automaton has 4279 states and 11532 transitions. Word has length 48 [2021-05-03 14:58:04,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:04,502 INFO L480 AbstractCegarLoop]: Abstraction has 4279 states and 11532 transitions. [2021-05-03 14:58:04,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:04,503 INFO L276 IsEmpty]: Start isEmpty. Operand 4279 states and 11532 transitions. [2021-05-03 14:58:04,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:04,512 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:04,512 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:04,513 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-03 14:58:04,513 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:04,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:04,513 INFO L82 PathProgramCache]: Analyzing trace with hash 847917452, now seen corresponding path program 8 times [2021-05-03 14:58:04,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:04,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497562732] [2021-05-03 14:58:04,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:04,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:04,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497562732] [2021-05-03 14:58:04,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:04,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-03 14:58:04,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17603674] [2021-05-03 14:58:04,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-03 14:58:04,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:04,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-03 14:58:04,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-05-03 14:58:04,619 INFO L87 Difference]: Start difference. First operand 4279 states and 11532 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:04,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:04,867 INFO L93 Difference]: Finished difference Result 5456 states and 14677 transitions. [2021-05-03 14:58:04,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-03 14:58:04,867 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:04,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:04,878 INFO L225 Difference]: With dead ends: 5456 [2021-05-03 14:58:04,878 INFO L226 Difference]: Without dead ends: 5025 [2021-05-03 14:58:04,878 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 100.3ms TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-05-03 14:58:04,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5025 states. [2021-05-03 14:58:04,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5025 to 3799. [2021-05-03 14:58:04,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3799 states, 3798 states have (on average 2.7093206951026856) internal successors, (10290), 3798 states have internal predecessors, (10290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:05,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3799 states to 3799 states and 10290 transitions. [2021-05-03 14:58:05,004 INFO L78 Accepts]: Start accepts. Automaton has 3799 states and 10290 transitions. Word has length 48 [2021-05-03 14:58:05,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:05,005 INFO L480 AbstractCegarLoop]: Abstraction has 3799 states and 10290 transitions. [2021-05-03 14:58:05,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:05,005 INFO L276 IsEmpty]: Start isEmpty. Operand 3799 states and 10290 transitions. [2021-05-03 14:58:05,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:05,014 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:05,014 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:05,014 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-03 14:58:05,014 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:05,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:05,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1394699670, now seen corresponding path program 9 times [2021-05-03 14:58:05,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:05,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263104149] [2021-05-03 14:58:05,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:05,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:05,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263104149] [2021-05-03 14:58:05,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:05,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-03 14:58:05,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513780140] [2021-05-03 14:58:05,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-03 14:58:05,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:05,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-03 14:58:05,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 14:58:05,043 INFO L87 Difference]: Start difference. First operand 3799 states and 10290 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:05,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:05,061 INFO L93 Difference]: Finished difference Result 3598 states and 9548 transitions. [2021-05-03 14:58:05,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 14:58:05,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:05,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:05,069 INFO L225 Difference]: With dead ends: 3598 [2021-05-03 14:58:05,069 INFO L226 Difference]: Without dead ends: 3598 [2021-05-03 14:58:05,070 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 14:58:05,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3598 states. [2021-05-03 14:58:05,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3598 to 3598. [2021-05-03 14:58:05,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 3597 states have (on average 2.654434250764526) internal successors, (9548), 3597 states have internal predecessors, (9548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:05,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 9548 transitions. [2021-05-03 14:58:05,168 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 9548 transitions. Word has length 48 [2021-05-03 14:58:05,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:05,168 INFO L480 AbstractCegarLoop]: Abstraction has 3598 states and 9548 transitions. [2021-05-03 14:58:05,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:05,169 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 9548 transitions. [2021-05-03 14:58:05,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:05,177 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:05,177 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:05,177 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-03 14:58:05,177 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:05,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:05,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1269490762, now seen corresponding path program 10 times [2021-05-03 14:58:05,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:05,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257622052] [2021-05-03 14:58:05,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:05,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:05,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257622052] [2021-05-03 14:58:05,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:05,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-03 14:58:05,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874533786] [2021-05-03 14:58:05,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-03 14:58:05,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:05,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-03 14:58:05,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-05-03 14:58:05,353 INFO L87 Difference]: Start difference. First operand 3598 states and 9548 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:05,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:05,645 INFO L93 Difference]: Finished difference Result 4961 states and 13061 transitions. [2021-05-03 14:58:05,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-03 14:58:05,646 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:05,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:05,657 INFO L225 Difference]: With dead ends: 4961 [2021-05-03 14:58:05,657 INFO L226 Difference]: Without dead ends: 4640 [2021-05-03 14:58:05,658 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 114.3ms TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-05-03 14:58:05,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4640 states. [2021-05-03 14:58:05,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4640 to 3815. [2021-05-03 14:58:05,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3815 states, 3814 states have (on average 2.6350288411116938) internal successors, (10050), 3814 states have internal predecessors, (10050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:05,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3815 states to 3815 states and 10050 transitions. [2021-05-03 14:58:05,759 INFO L78 Accepts]: Start accepts. Automaton has 3815 states and 10050 transitions. Word has length 48 [2021-05-03 14:58:05,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:05,759 INFO L480 AbstractCegarLoop]: Abstraction has 3815 states and 10050 transitions. [2021-05-03 14:58:05,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:05,760 INFO L276 IsEmpty]: Start isEmpty. Operand 3815 states and 10050 transitions. [2021-05-03 14:58:05,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:05,766 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:05,767 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:05,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-03 14:58:05,767 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:05,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:05,767 INFO L82 PathProgramCache]: Analyzing trace with hash -533010174, now seen corresponding path program 11 times [2021-05-03 14:58:05,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:05,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390969512] [2021-05-03 14:58:05,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:05,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:05,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390969512] [2021-05-03 14:58:05,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:05,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-03 14:58:05,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950283487] [2021-05-03 14:58:05,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-03 14:58:05,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:05,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-03 14:58:05,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-05-03 14:58:05,859 INFO L87 Difference]: Start difference. First operand 3815 states and 10050 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:06,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:06,216 INFO L93 Difference]: Finished difference Result 5108 states and 13372 transitions. [2021-05-03 14:58:06,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-03 14:58:06,217 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:06,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:06,231 INFO L225 Difference]: With dead ends: 5108 [2021-05-03 14:58:06,231 INFO L226 Difference]: Without dead ends: 5084 [2021-05-03 14:58:06,232 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 152.9ms TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-05-03 14:58:06,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5084 states. [2021-05-03 14:58:06,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5084 to 3926. [2021-05-03 14:58:06,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3926 states, 3925 states have (on average 2.6290445859872613) internal successors, (10319), 3925 states have internal predecessors, (10319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:06,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3926 states to 3926 states and 10319 transitions. [2021-05-03 14:58:06,334 INFO L78 Accepts]: Start accepts. Automaton has 3926 states and 10319 transitions. Word has length 48 [2021-05-03 14:58:06,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:06,334 INFO L480 AbstractCegarLoop]: Abstraction has 3926 states and 10319 transitions. [2021-05-03 14:58:06,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:06,335 INFO L276 IsEmpty]: Start isEmpty. Operand 3926 states and 10319 transitions. [2021-05-03 14:58:06,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:06,342 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:06,342 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:06,342 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-03 14:58:06,343 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:06,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:06,343 INFO L82 PathProgramCache]: Analyzing trace with hash 524989120, now seen corresponding path program 12 times [2021-05-03 14:58:06,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:06,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130767563] [2021-05-03 14:58:06,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:06,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:06,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130767563] [2021-05-03 14:58:06,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:06,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-03 14:58:06,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084013579] [2021-05-03 14:58:06,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-03 14:58:06,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:06,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-03 14:58:06,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-05-03 14:58:06,433 INFO L87 Difference]: Start difference. First operand 3926 states and 10319 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:06,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:06,797 INFO L93 Difference]: Finished difference Result 5063 states and 13258 transitions. [2021-05-03 14:58:06,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-03 14:58:06,797 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:06,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:06,806 INFO L225 Difference]: With dead ends: 5063 [2021-05-03 14:58:06,806 INFO L226 Difference]: Without dead ends: 4872 [2021-05-03 14:58:06,807 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 150.1ms TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2021-05-03 14:58:06,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4872 states. [2021-05-03 14:58:06,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4872 to 3787. [2021-05-03 14:58:06,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3787 states, 3786 states have (on average 2.6362916006339145) internal successors, (9981), 3786 states have internal predecessors, (9981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:06,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3787 states to 3787 states and 9981 transitions. [2021-05-03 14:58:06,907 INFO L78 Accepts]: Start accepts. Automaton has 3787 states and 9981 transitions. Word has length 48 [2021-05-03 14:58:06,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:06,908 INFO L480 AbstractCegarLoop]: Abstraction has 3787 states and 9981 transitions. [2021-05-03 14:58:06,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:06,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3787 states and 9981 transitions. [2021-05-03 14:58:06,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:06,914 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:06,914 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:06,915 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-03 14:58:06,915 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:06,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:06,915 INFO L82 PathProgramCache]: Analyzing trace with hash -100097542, now seen corresponding path program 13 times [2021-05-03 14:58:06,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:06,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231366509] [2021-05-03 14:58:06,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:07,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231366509] [2021-05-03 14:58:07,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:07,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 14:58:07,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29028783] [2021-05-03 14:58:07,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 14:58:07,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:07,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 14:58:07,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:07,008 INFO L87 Difference]: Start difference. First operand 3787 states and 9981 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:07,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:07,255 INFO L93 Difference]: Finished difference Result 5554 states and 14701 transitions. [2021-05-03 14:58:07,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-03 14:58:07,256 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:07,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:07,264 INFO L225 Difference]: With dead ends: 5554 [2021-05-03 14:58:07,264 INFO L226 Difference]: Without dead ends: 5350 [2021-05-03 14:58:07,264 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 83.6ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-05-03 14:58:07,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5350 states. [2021-05-03 14:58:07,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5350 to 4174. [2021-05-03 14:58:07,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4174 states, 4173 states have (on average 2.6455787203450756) internal successors, (11040), 4173 states have internal predecessors, (11040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:07,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4174 states to 4174 states and 11040 transitions. [2021-05-03 14:58:07,398 INFO L78 Accepts]: Start accepts. Automaton has 4174 states and 11040 transitions. Word has length 48 [2021-05-03 14:58:07,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:07,399 INFO L480 AbstractCegarLoop]: Abstraction has 4174 states and 11040 transitions. [2021-05-03 14:58:07,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:07,399 INFO L276 IsEmpty]: Start isEmpty. Operand 4174 states and 11040 transitions. [2021-05-03 14:58:07,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:07,406 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:07,406 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:07,406 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-03 14:58:07,407 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:07,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:07,407 INFO L82 PathProgramCache]: Analyzing trace with hash -80771658, now seen corresponding path program 14 times [2021-05-03 14:58:07,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:07,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121197013] [2021-05-03 14:58:07,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:07,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:07,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121197013] [2021-05-03 14:58:07,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:07,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 14:58:07,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082084473] [2021-05-03 14:58:07,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 14:58:07,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:07,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 14:58:07,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:07,532 INFO L87 Difference]: Start difference. First operand 4174 states and 11040 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:07,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:07,805 INFO L93 Difference]: Finished difference Result 4702 states and 12398 transitions. [2021-05-03 14:58:07,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 14:58:07,806 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:07,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:07,812 INFO L225 Difference]: With dead ends: 4702 [2021-05-03 14:58:07,812 INFO L226 Difference]: Without dead ends: 4702 [2021-05-03 14:58:07,812 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 60.7ms TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:07,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4702 states. [2021-05-03 14:58:07,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4702 to 4298. [2021-05-03 14:58:07,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4298 states, 4297 states have (on average 2.6371887363276705) internal successors, (11332), 4297 states have internal predecessors, (11332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:07,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4298 states to 4298 states and 11332 transitions. [2021-05-03 14:58:07,924 INFO L78 Accepts]: Start accepts. Automaton has 4298 states and 11332 transitions. Word has length 48 [2021-05-03 14:58:07,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:07,924 INFO L480 AbstractCegarLoop]: Abstraction has 4298 states and 11332 transitions. [2021-05-03 14:58:07,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:07,925 INFO L276 IsEmpty]: Start isEmpty. Operand 4298 states and 11332 transitions. [2021-05-03 14:58:07,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:07,932 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:07,932 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:07,932 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-03 14:58:07,932 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:07,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:07,933 INFO L82 PathProgramCache]: Analyzing trace with hash 355340122, now seen corresponding path program 15 times [2021-05-03 14:58:07,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:07,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959799976] [2021-05-03 14:58:07,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:08,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:08,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959799976] [2021-05-03 14:58:08,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:08,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 14:58:08,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298923771] [2021-05-03 14:58:08,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 14:58:08,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:08,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 14:58:08,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:08,020 INFO L87 Difference]: Start difference. First operand 4298 states and 11332 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:08,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:08,243 INFO L93 Difference]: Finished difference Result 5221 states and 13627 transitions. [2021-05-03 14:58:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 14:58:08,244 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:08,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:08,250 INFO L225 Difference]: With dead ends: 5221 [2021-05-03 14:58:08,250 INFO L226 Difference]: Without dead ends: 4972 [2021-05-03 14:58:08,251 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 54.2ms TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:08,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4972 states. [2021-05-03 14:58:08,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4972 to 4172. [2021-05-03 14:58:08,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4172 states, 4171 states have (on average 2.639415008391273) internal successors, (11009), 4171 states have internal predecessors, (11009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:08,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4172 states to 4172 states and 11009 transitions. [2021-05-03 14:58:08,347 INFO L78 Accepts]: Start accepts. Automaton has 4172 states and 11009 transitions. Word has length 48 [2021-05-03 14:58:08,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:08,347 INFO L480 AbstractCegarLoop]: Abstraction has 4172 states and 11009 transitions. [2021-05-03 14:58:08,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:08,347 INFO L276 IsEmpty]: Start isEmpty. Operand 4172 states and 11009 transitions. [2021-05-03 14:58:08,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:08,353 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:08,354 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:08,354 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-03 14:58:08,354 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:08,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:08,354 INFO L82 PathProgramCache]: Analyzing trace with hash 799585348, now seen corresponding path program 16 times [2021-05-03 14:58:08,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:08,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446652061] [2021-05-03 14:58:08,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:08,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:08,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446652061] [2021-05-03 14:58:08,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:08,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-03 14:58:08,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716872752] [2021-05-03 14:58:08,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-03 14:58:08,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:08,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-03 14:58:08,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-05-03 14:58:08,481 INFO L87 Difference]: Start difference. First operand 4172 states and 11009 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:08,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:08,736 INFO L93 Difference]: Finished difference Result 5170 states and 13486 transitions. [2021-05-03 14:58:08,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-03 14:58:08,737 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:08,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:08,743 INFO L225 Difference]: With dead ends: 5170 [2021-05-03 14:58:08,743 INFO L226 Difference]: Without dead ends: 4942 [2021-05-03 14:58:08,744 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 114.3ms TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-05-03 14:58:08,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4942 states. [2021-05-03 14:58:08,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4942 to 4130. [2021-05-03 14:58:08,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4130 states, 4129 states have (on average 2.642044078469363) internal successors, (10909), 4129 states have internal predecessors, (10909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:08,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 10909 transitions. [2021-05-03 14:58:08,842 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 10909 transitions. Word has length 48 [2021-05-03 14:58:08,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:08,842 INFO L480 AbstractCegarLoop]: Abstraction has 4130 states and 10909 transitions. [2021-05-03 14:58:08,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:08,842 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 10909 transitions. [2021-05-03 14:58:08,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:08,847 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:08,848 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:08,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-03 14:58:08,848 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:08,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:08,848 INFO L82 PathProgramCache]: Analyzing trace with hash 868296408, now seen corresponding path program 17 times [2021-05-03 14:58:08,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:08,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875254506] [2021-05-03 14:58:08,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:08,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:08,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875254506] [2021-05-03 14:58:08,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:08,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 14:58:08,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908972050] [2021-05-03 14:58:08,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 14:58:08,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:08,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 14:58:08,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:08,988 INFO L87 Difference]: Start difference. First operand 4130 states and 10909 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:09,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:09,221 INFO L93 Difference]: Finished difference Result 4624 states and 12184 transitions. [2021-05-03 14:58:09,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 14:58:09,222 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:09,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:09,227 INFO L225 Difference]: With dead ends: 4624 [2021-05-03 14:58:09,228 INFO L226 Difference]: Without dead ends: 4624 [2021-05-03 14:58:09,228 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 60.0ms TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:09,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4624 states. [2021-05-03 14:58:09,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4624 to 4226. [2021-05-03 14:58:09,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4226 states, 4225 states have (on average 2.6345562130177513) internal successors, (11131), 4225 states have internal predecessors, (11131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:09,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 11131 transitions. [2021-05-03 14:58:09,319 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 11131 transitions. Word has length 48 [2021-05-03 14:58:09,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:09,319 INFO L480 AbstractCegarLoop]: Abstraction has 4226 states and 11131 transitions. [2021-05-03 14:58:09,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:09,320 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 11131 transitions. [2021-05-03 14:58:09,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:09,325 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:09,325 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:09,325 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-03 14:58:09,326 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:09,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:09,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1304408188, now seen corresponding path program 18 times [2021-05-03 14:58:09,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:09,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664545674] [2021-05-03 14:58:09,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:09,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:09,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664545674] [2021-05-03 14:58:09,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:09,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 14:58:09,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387944960] [2021-05-03 14:58:09,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 14:58:09,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:09,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 14:58:09,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:09,426 INFO L87 Difference]: Start difference. First operand 4226 states and 11131 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:09,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:09,638 INFO L93 Difference]: Finished difference Result 4759 states and 12502 transitions. [2021-05-03 14:58:09,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-03 14:58:09,638 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:09,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:09,644 INFO L225 Difference]: With dead ends: 4759 [2021-05-03 14:58:09,644 INFO L226 Difference]: Without dead ends: 4522 [2021-05-03 14:58:09,644 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 64.0ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-03 14:58:09,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4522 states. [2021-05-03 14:58:09,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4522 to 4108. [2021-05-03 14:58:09,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4108 states, 4107 states have (on average 2.6408570732895056) internal successors, (10846), 4107 states have internal predecessors, (10846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:09,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4108 states to 4108 states and 10846 transitions. [2021-05-03 14:58:09,749 INFO L78 Accepts]: Start accepts. Automaton has 4108 states and 10846 transitions. Word has length 48 [2021-05-03 14:58:09,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:09,749 INFO L480 AbstractCegarLoop]: Abstraction has 4108 states and 10846 transitions. [2021-05-03 14:58:09,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:09,749 INFO L276 IsEmpty]: Start isEmpty. Operand 4108 states and 10846 transitions. [2021-05-03 14:58:09,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:09,754 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:09,754 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:09,754 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-03 14:58:09,755 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:09,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:09,755 INFO L82 PathProgramCache]: Analyzing trace with hash 271395798, now seen corresponding path program 19 times [2021-05-03 14:58:09,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:09,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95804866] [2021-05-03 14:58:09,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:09,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95804866] [2021-05-03 14:58:09,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:09,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 14:58:09,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612178032] [2021-05-03 14:58:09,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 14:58:09,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:09,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 14:58:09,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-05-03 14:58:09,832 INFO L87 Difference]: Start difference. First operand 4108 states and 10846 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:10,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:10,028 INFO L93 Difference]: Finished difference Result 4548 states and 11976 transitions. [2021-05-03 14:58:10,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 14:58:10,029 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:10,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:10,034 INFO L225 Difference]: With dead ends: 4548 [2021-05-03 14:58:10,034 INFO L226 Difference]: Without dead ends: 4548 [2021-05-03 14:58:10,034 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 56.0ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:10,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4548 states. [2021-05-03 14:58:10,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4548 to 4208. [2021-05-03 14:58:10,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4208 states, 4207 states have (on average 2.6313287378179226) internal successors, (11070), 4207 states have internal predecessors, (11070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:10,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4208 states to 4208 states and 11070 transitions. [2021-05-03 14:58:10,126 INFO L78 Accepts]: Start accepts. Automaton has 4208 states and 11070 transitions. Word has length 48 [2021-05-03 14:58:10,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:10,127 INFO L480 AbstractCegarLoop]: Abstraction has 4208 states and 11070 transitions. [2021-05-03 14:58:10,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:10,127 INFO L276 IsEmpty]: Start isEmpty. Operand 4208 states and 11070 transitions. [2021-05-03 14:58:10,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:10,132 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:10,132 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:10,132 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-05-03 14:58:10,132 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:10,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:10,132 INFO L82 PathProgramCache]: Analyzing trace with hash 707507578, now seen corresponding path program 20 times [2021-05-03 14:58:10,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:10,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922023185] [2021-05-03 14:58:10,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:10,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:10,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922023185] [2021-05-03 14:58:10,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:10,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 14:58:10,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562278287] [2021-05-03 14:58:10,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 14:58:10,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:10,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 14:58:10,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-03 14:58:10,229 INFO L87 Difference]: Start difference. First operand 4208 states and 11070 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:10,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:10,451 INFO L93 Difference]: Finished difference Result 4731 states and 12395 transitions. [2021-05-03 14:58:10,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 14:58:10,452 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:10,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:10,457 INFO L225 Difference]: With dead ends: 4731 [2021-05-03 14:58:10,457 INFO L226 Difference]: Without dead ends: 4530 [2021-05-03 14:58:10,457 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 63.4ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:10,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4530 states. [2021-05-03 14:58:10,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4530 to 4190. [2021-05-03 14:58:10,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4189 states have (on average 2.6295058486512293) internal successors, (11015), 4189 states have internal predecessors, (11015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:10,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 11015 transitions. [2021-05-03 14:58:10,555 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 11015 transitions. Word has length 48 [2021-05-03 14:58:10,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:10,555 INFO L480 AbstractCegarLoop]: Abstraction has 4190 states and 11015 transitions. [2021-05-03 14:58:10,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:10,555 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 11015 transitions. [2021-05-03 14:58:10,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:10,561 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:10,561 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:10,561 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-05-03 14:58:10,561 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:10,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:10,561 INFO L82 PathProgramCache]: Analyzing trace with hash 2132515486, now seen corresponding path program 21 times [2021-05-03 14:58:10,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:10,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022501878] [2021-05-03 14:58:10,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:10,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:10,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022501878] [2021-05-03 14:58:10,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:10,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 14:58:10,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57477690] [2021-05-03 14:58:10,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 14:58:10,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:10,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 14:58:10,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-03 14:58:10,656 INFO L87 Difference]: Start difference. First operand 4190 states and 11015 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:10,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:10,866 INFO L93 Difference]: Finished difference Result 4755 states and 12442 transitions. [2021-05-03 14:58:10,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 14:58:10,867 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:10,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:10,871 INFO L225 Difference]: With dead ends: 4755 [2021-05-03 14:58:10,871 INFO L226 Difference]: Without dead ends: 4522 [2021-05-03 14:58:10,872 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 64.3ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:10,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4522 states. [2021-05-03 14:58:10,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4522 to 4160. [2021-05-03 14:58:10,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4160 states, 4159 states have (on average 2.6280355854772783) internal successors, (10930), 4159 states have internal predecessors, (10930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:10,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4160 states to 4160 states and 10930 transitions. [2021-05-03 14:58:10,948 INFO L78 Accepts]: Start accepts. Automaton has 4160 states and 10930 transitions. Word has length 48 [2021-05-03 14:58:10,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:10,948 INFO L480 AbstractCegarLoop]: Abstraction has 4160 states and 10930 transitions. [2021-05-03 14:58:10,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:10,948 INFO L276 IsEmpty]: Start isEmpty. Operand 4160 states and 10930 transitions. [2021-05-03 14:58:10,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:10,953 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:10,953 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:10,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-05-03 14:58:10,954 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:10,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:10,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1368337314, now seen corresponding path program 22 times [2021-05-03 14:58:10,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:10,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418120151] [2021-05-03 14:58:10,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:11,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:11,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418120151] [2021-05-03 14:58:11,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:11,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-03 14:58:11,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120405320] [2021-05-03 14:58:11,095 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-03 14:58:11,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:11,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-03 14:58:11,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-05-03 14:58:11,097 INFO L87 Difference]: Start difference. First operand 4160 states and 10930 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:11,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:11,476 INFO L93 Difference]: Finished difference Result 5534 states and 14288 transitions. [2021-05-03 14:58:11,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-03 14:58:11,477 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:11,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:11,483 INFO L225 Difference]: With dead ends: 5534 [2021-05-03 14:58:11,483 INFO L226 Difference]: Without dead ends: 5498 [2021-05-03 14:58:11,485 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 189.7ms TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-05-03 14:58:11,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5498 states. [2021-05-03 14:58:11,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5498 to 4398. [2021-05-03 14:58:11,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4398 states, 4397 states have (on average 2.618831021150785) internal successors, (11515), 4397 states have internal predecessors, (11515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:11,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4398 states to 4398 states and 11515 transitions. [2021-05-03 14:58:11,580 INFO L78 Accepts]: Start accepts. Automaton has 4398 states and 11515 transitions. Word has length 48 [2021-05-03 14:58:11,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:11,581 INFO L480 AbstractCegarLoop]: Abstraction has 4398 states and 11515 transitions. [2021-05-03 14:58:11,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:11,581 INFO L276 IsEmpty]: Start isEmpty. Operand 4398 states and 11515 transitions. [2021-05-03 14:58:11,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:11,586 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:11,587 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:11,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-05-03 14:58:11,587 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:11,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:11,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1868630688, now seen corresponding path program 23 times [2021-05-03 14:58:11,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:11,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111282967] [2021-05-03 14:58:11,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:11,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:11,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111282967] [2021-05-03 14:58:11,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:11,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-03 14:58:11,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122738417] [2021-05-03 14:58:11,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-03 14:58:11,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:11,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-03 14:58:11,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-05-03 14:58:11,700 INFO L87 Difference]: Start difference. First operand 4398 states and 11515 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:12,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:12,022 INFO L93 Difference]: Finished difference Result 5174 states and 13405 transitions. [2021-05-03 14:58:12,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-03 14:58:12,022 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:12,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:12,027 INFO L225 Difference]: With dead ends: 5174 [2021-05-03 14:58:12,027 INFO L226 Difference]: Without dead ends: 4988 [2021-05-03 14:58:12,027 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 138.5ms TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-05-03 14:58:12,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4988 states. [2021-05-03 14:58:12,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4988 to 4347. [2021-05-03 14:58:12,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 4346 states have (on average 2.6189599631845377) internal successors, (11382), 4346 states have internal predecessors, (11382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:12,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 11382 transitions. [2021-05-03 14:58:12,100 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 11382 transitions. Word has length 48 [2021-05-03 14:58:12,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:12,101 INFO L480 AbstractCegarLoop]: Abstraction has 4347 states and 11382 transitions. [2021-05-03 14:58:12,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:12,101 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 11382 transitions. [2021-05-03 14:58:12,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:12,105 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:12,105 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:12,105 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-05-03 14:58:12,105 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:12,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:12,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1739586752, now seen corresponding path program 24 times [2021-05-03 14:58:12,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:12,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57605691] [2021-05-03 14:58:12,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:12,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:12,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57605691] [2021-05-03 14:58:12,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:12,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-03 14:58:12,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702505440] [2021-05-03 14:58:12,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-03 14:58:12,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:12,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-03 14:58:12,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-05-03 14:58:12,228 INFO L87 Difference]: Start difference. First operand 4347 states and 11382 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:12,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:12,507 INFO L93 Difference]: Finished difference Result 4954 states and 12915 transitions. [2021-05-03 14:58:12,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-03 14:58:12,508 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:12,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:12,514 INFO L225 Difference]: With dead ends: 4954 [2021-05-03 14:58:12,514 INFO L226 Difference]: Without dead ends: 4849 [2021-05-03 14:58:12,514 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 137.8ms TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-05-03 14:58:12,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4849 states. [2021-05-03 14:58:12,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4849 to 4314. [2021-05-03 14:58:12,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4314 states, 4313 states have (on average 2.619986088569441) internal successors, (11300), 4313 states have internal predecessors, (11300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:12,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4314 states to 4314 states and 11300 transitions. [2021-05-03 14:58:12,596 INFO L78 Accepts]: Start accepts. Automaton has 4314 states and 11300 transitions. Word has length 48 [2021-05-03 14:58:12,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:12,596 INFO L480 AbstractCegarLoop]: Abstraction has 4314 states and 11300 transitions. [2021-05-03 14:58:12,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:12,597 INFO L276 IsEmpty]: Start isEmpty. Operand 4314 states and 11300 transitions. [2021-05-03 14:58:12,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:12,602 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:12,602 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:12,602 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-05-03 14:58:12,602 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:12,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:12,603 INFO L82 PathProgramCache]: Analyzing trace with hash 2037057246, now seen corresponding path program 25 times [2021-05-03 14:58:12,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:12,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881961146] [2021-05-03 14:58:12,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:12,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:12,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881961146] [2021-05-03 14:58:12,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:12,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-03 14:58:12,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611667382] [2021-05-03 14:58:12,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-03 14:58:12,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:12,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-03 14:58:12,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-05-03 14:58:12,783 INFO L87 Difference]: Start difference. First operand 4314 states and 11300 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:13,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:13,046 INFO L93 Difference]: Finished difference Result 4840 states and 12644 transitions. [2021-05-03 14:58:13,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-03 14:58:13,047 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:13,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:13,051 INFO L225 Difference]: With dead ends: 4840 [2021-05-03 14:58:13,051 INFO L226 Difference]: Without dead ends: 4816 [2021-05-03 14:58:13,052 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 149.9ms TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-05-03 14:58:13,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4816 states. [2021-05-03 14:58:13,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4816 to 4347. [2021-05-03 14:58:13,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 4346 states have (on average 2.61826967326277) internal successors, (11379), 4346 states have internal predecessors, (11379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:13,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 11379 transitions. [2021-05-03 14:58:13,108 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 11379 transitions. Word has length 48 [2021-05-03 14:58:13,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:13,108 INFO L480 AbstractCegarLoop]: Abstraction has 4347 states and 11379 transitions. [2021-05-03 14:58:13,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:13,108 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 11379 transitions. [2021-05-03 14:58:13,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:13,113 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:13,113 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:13,113 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-05-03 14:58:13,113 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:13,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:13,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1199910756, now seen corresponding path program 26 times [2021-05-03 14:58:13,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:13,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244463652] [2021-05-03 14:58:13,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:13,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:13,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244463652] [2021-05-03 14:58:13,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:13,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-03 14:58:13,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237721414] [2021-05-03 14:58:13,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-03 14:58:13,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:13,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-03 14:58:13,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-05-03 14:58:13,240 INFO L87 Difference]: Start difference. First operand 4347 states and 11379 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:13,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:13,549 INFO L93 Difference]: Finished difference Result 5071 states and 13194 transitions. [2021-05-03 14:58:13,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-03 14:58:13,549 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:13,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:13,555 INFO L225 Difference]: With dead ends: 5071 [2021-05-03 14:58:13,555 INFO L226 Difference]: Without dead ends: 4946 [2021-05-03 14:58:13,555 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 137.7ms TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-05-03 14:58:13,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4946 states. [2021-05-03 14:58:13,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4946 to 4288. [2021-05-03 14:58:13,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4288 states, 4287 states have (on average 2.621413575927222) internal successors, (11238), 4287 states have internal predecessors, (11238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:13,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4288 states to 4288 states and 11238 transitions. [2021-05-03 14:58:13,614 INFO L78 Accepts]: Start accepts. Automaton has 4288 states and 11238 transitions. Word has length 48 [2021-05-03 14:58:13,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:13,615 INFO L480 AbstractCegarLoop]: Abstraction has 4288 states and 11238 transitions. [2021-05-03 14:58:13,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:13,615 INFO L276 IsEmpty]: Start isEmpty. Operand 4288 states and 11238 transitions. [2021-05-03 14:58:13,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:13,620 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:13,620 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:13,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-05-03 14:58:13,620 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:13,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:13,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1066921176, now seen corresponding path program 27 times [2021-05-03 14:58:13,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:13,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321300859] [2021-05-03 14:58:13,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:13,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:13,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321300859] [2021-05-03 14:58:13,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:13,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-03 14:58:13,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833414424] [2021-05-03 14:58:13,713 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-03 14:58:13,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:13,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-03 14:58:13,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-05-03 14:58:13,713 INFO L87 Difference]: Start difference. First operand 4288 states and 11238 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:14,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:14,066 INFO L93 Difference]: Finished difference Result 5186 states and 13469 transitions. [2021-05-03 14:58:14,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-03 14:58:14,066 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:14,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:14,072 INFO L225 Difference]: With dead ends: 5186 [2021-05-03 14:58:14,072 INFO L226 Difference]: Without dead ends: 5162 [2021-05-03 14:58:14,073 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 102.0ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-05-03 14:58:14,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5162 states. [2021-05-03 14:58:14,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5162 to 4339. [2021-05-03 14:58:14,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4339 states, 4338 states have (on average 2.6177962194559705) internal successors, (11356), 4338 states have internal predecessors, (11356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:14,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4339 states to 4339 states and 11356 transitions. [2021-05-03 14:58:14,163 INFO L78 Accepts]: Start accepts. Automaton has 4339 states and 11356 transitions. Word has length 48 [2021-05-03 14:58:14,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:14,163 INFO L480 AbstractCegarLoop]: Abstraction has 4339 states and 11356 transitions. [2021-05-03 14:58:14,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:14,163 INFO L276 IsEmpty]: Start isEmpty. Operand 4339 states and 11356 transitions. [2021-05-03 14:58:14,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:14,168 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:14,168 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:14,169 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-05-03 14:58:14,169 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:14,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:14,169 INFO L82 PathProgramCache]: Analyzing trace with hash 2124920470, now seen corresponding path program 28 times [2021-05-03 14:58:14,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:14,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142217460] [2021-05-03 14:58:14,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:14,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:14,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142217460] [2021-05-03 14:58:14,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:14,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-03 14:58:14,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603527670] [2021-05-03 14:58:14,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-03 14:58:14,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:14,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-03 14:58:14,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-05-03 14:58:14,258 INFO L87 Difference]: Start difference. First operand 4339 states and 11356 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:14,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:14,501 INFO L93 Difference]: Finished difference Result 5129 states and 13329 transitions. [2021-05-03 14:58:14,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-03 14:58:14,501 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:14,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:14,506 INFO L225 Difference]: With dead ends: 5129 [2021-05-03 14:58:14,506 INFO L226 Difference]: Without dead ends: 4848 [2021-05-03 14:58:14,506 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 101.6ms TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-05-03 14:58:14,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4848 states. [2021-05-03 14:58:14,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4848 to 4132. [2021-05-03 14:58:14,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4132 states, 4131 states have (on average 2.6318082788671022) internal successors, (10872), 4131 states have internal predecessors, (10872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:14,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4132 states to 4132 states and 10872 transitions. [2021-05-03 14:58:14,566 INFO L78 Accepts]: Start accepts. Automaton has 4132 states and 10872 transitions. Word has length 48 [2021-05-03 14:58:14,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:14,566 INFO L480 AbstractCegarLoop]: Abstraction has 4132 states and 10872 transitions. [2021-05-03 14:58:14,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:14,566 INFO L276 IsEmpty]: Start isEmpty. Operand 4132 states and 10872 transitions. [2021-05-03 14:58:14,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:14,569 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:14,569 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:14,570 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-05-03 14:58:14,570 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:14,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:14,570 INFO L82 PathProgramCache]: Analyzing trace with hash 125879364, now seen corresponding path program 29 times [2021-05-03 14:58:14,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:14,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594355285] [2021-05-03 14:58:14,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:14,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:14,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594355285] [2021-05-03 14:58:14,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:14,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-03 14:58:14,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971856949] [2021-05-03 14:58:14,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-03 14:58:14,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:14,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-03 14:58:14,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-03 14:58:14,705 INFO L87 Difference]: Start difference. First operand 4132 states and 10872 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:14,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:14,892 INFO L93 Difference]: Finished difference Result 4585 states and 12040 transitions. [2021-05-03 14:58:14,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-03 14:58:14,893 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:14,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:14,897 INFO L225 Difference]: With dead ends: 4585 [2021-05-03 14:58:14,897 INFO L226 Difference]: Without dead ends: 4448 [2021-05-03 14:58:14,897 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 121.8ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-05-03 14:58:14,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4448 states. [2021-05-03 14:58:14,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4448 to 4112. [2021-05-03 14:58:14,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4112 states, 4111 states have (on average 2.634882023838482) internal successors, (10832), 4111 states have internal predecessors, (10832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:14,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4112 states to 4112 states and 10832 transitions. [2021-05-03 14:58:14,951 INFO L78 Accepts]: Start accepts. Automaton has 4112 states and 10832 transitions. Word has length 48 [2021-05-03 14:58:14,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:14,951 INFO L480 AbstractCegarLoop]: Abstraction has 4112 states and 10832 transitions. [2021-05-03 14:58:14,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:14,951 INFO L276 IsEmpty]: Start isEmpty. Operand 4112 states and 10832 transitions. [2021-05-03 14:58:14,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:14,955 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:14,955 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:14,955 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-05-03 14:58:14,955 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:14,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:14,956 INFO L82 PathProgramCache]: Analyzing trace with hash 684571300, now seen corresponding path program 30 times [2021-05-03 14:58:14,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:14,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256391649] [2021-05-03 14:58:14,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:15,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:15,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256391649] [2021-05-03 14:58:15,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:15,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 14:58:15,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992515349] [2021-05-03 14:58:15,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 14:58:15,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:15,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 14:58:15,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-05-03 14:58:15,041 INFO L87 Difference]: Start difference. First operand 4112 states and 10832 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:15,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:15,229 INFO L93 Difference]: Finished difference Result 5959 states and 15857 transitions. [2021-05-03 14:58:15,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-03 14:58:15,229 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:15,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:15,237 INFO L225 Difference]: With dead ends: 5959 [2021-05-03 14:58:15,237 INFO L226 Difference]: Without dead ends: 5927 [2021-05-03 14:58:15,237 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 83.4ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-05-03 14:58:15,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5927 states. [2021-05-03 14:58:15,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5927 to 4565. [2021-05-03 14:58:15,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4565 states, 4564 states have (on average 2.647677475898335) internal successors, (12084), 4564 states have internal predecessors, (12084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:15,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4565 states to 4565 states and 12084 transitions. [2021-05-03 14:58:15,332 INFO L78 Accepts]: Start accepts. Automaton has 4565 states and 12084 transitions. Word has length 48 [2021-05-03 14:58:15,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:15,332 INFO L480 AbstractCegarLoop]: Abstraction has 4565 states and 12084 transitions. [2021-05-03 14:58:15,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:15,332 INFO L276 IsEmpty]: Start isEmpty. Operand 4565 states and 12084 transitions. [2021-05-03 14:58:15,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:15,338 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:15,338 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:15,338 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-05-03 14:58:15,338 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:15,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:15,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1536051876, now seen corresponding path program 31 times [2021-05-03 14:58:15,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:15,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39073408] [2021-05-03 14:58:15,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:15,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:15,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39073408] [2021-05-03 14:58:15,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:15,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 14:58:15,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576409056] [2021-05-03 14:58:15,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 14:58:15,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:15,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 14:58:15,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-05-03 14:58:15,424 INFO L87 Difference]: Start difference. First operand 4565 states and 12084 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:15,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:15,591 INFO L93 Difference]: Finished difference Result 6016 states and 15862 transitions. [2021-05-03 14:58:15,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-03 14:58:15,591 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:15,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:15,598 INFO L225 Difference]: With dead ends: 6016 [2021-05-03 14:58:15,598 INFO L226 Difference]: Without dead ends: 5611 [2021-05-03 14:58:15,599 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 82.7ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-05-03 14:58:15,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5611 states. [2021-05-03 14:58:15,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5611 to 4887. [2021-05-03 14:58:15,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4887 states, 4886 states have (on average 2.6283258288988947) internal successors, (12842), 4886 states have internal predecessors, (12842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:15,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4887 states to 4887 states and 12842 transitions. [2021-05-03 14:58:15,692 INFO L78 Accepts]: Start accepts. Automaton has 4887 states and 12842 transitions. Word has length 48 [2021-05-03 14:58:15,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:15,692 INFO L480 AbstractCegarLoop]: Abstraction has 4887 states and 12842 transitions. [2021-05-03 14:58:15,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:15,693 INFO L276 IsEmpty]: Start isEmpty. Operand 4887 states and 12842 transitions. [2021-05-03 14:58:15,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:15,699 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:15,699 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:15,699 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-05-03 14:58:15,699 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:15,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:15,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1965330020, now seen corresponding path program 32 times [2021-05-03 14:58:15,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:15,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456777656] [2021-05-03 14:58:15,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:15,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:15,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456777656] [2021-05-03 14:58:15,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:15,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 14:58:15,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176214553] [2021-05-03 14:58:15,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 14:58:15,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:15,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 14:58:15,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:15,848 INFO L87 Difference]: Start difference. First operand 4887 states and 12842 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:16,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:16,005 INFO L93 Difference]: Finished difference Result 5774 states and 15151 transitions. [2021-05-03 14:58:16,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 14:58:16,005 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:16,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:16,011 INFO L225 Difference]: With dead ends: 5774 [2021-05-03 14:58:16,011 INFO L226 Difference]: Without dead ends: 5722 [2021-05-03 14:58:16,011 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 88.3ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:16,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5722 states. [2021-05-03 14:58:16,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5722 to 5124. [2021-05-03 14:58:16,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5124 states, 5123 states have (on average 2.6244388053874683) internal successors, (13445), 5123 states have internal predecessors, (13445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:16,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5124 states to 5124 states and 13445 transitions. [2021-05-03 14:58:16,089 INFO L78 Accepts]: Start accepts. Automaton has 5124 states and 13445 transitions. Word has length 48 [2021-05-03 14:58:16,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:16,089 INFO L480 AbstractCegarLoop]: Abstraction has 5124 states and 13445 transitions. [2021-05-03 14:58:16,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:16,089 INFO L276 IsEmpty]: Start isEmpty. Operand 5124 states and 13445 transitions. [2021-05-03 14:58:16,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:16,095 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:16,096 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:16,096 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-05-03 14:58:16,096 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:16,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:16,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1271637982, now seen corresponding path program 33 times [2021-05-03 14:58:16,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:16,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502621202] [2021-05-03 14:58:16,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:16,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:16,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502621202] [2021-05-03 14:58:16,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:16,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 14:58:16,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145666205] [2021-05-03 14:58:16,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 14:58:16,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:16,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 14:58:16,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-03 14:58:16,177 INFO L87 Difference]: Start difference. First operand 5124 states and 13445 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:16,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:16,310 INFO L93 Difference]: Finished difference Result 5531 states and 14434 transitions. [2021-05-03 14:58:16,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-03 14:58:16,311 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:16,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:16,318 INFO L225 Difference]: With dead ends: 5531 [2021-05-03 14:58:16,318 INFO L226 Difference]: Without dead ends: 5256 [2021-05-03 14:58:16,318 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 55.6ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-03 14:58:16,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5256 states. [2021-05-03 14:58:16,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5256 to 4454. [2021-05-03 14:58:16,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4453 states have (on average 2.5969009656411406) internal successors, (11564), 4453 states have internal predecessors, (11564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:16,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 11564 transitions. [2021-05-03 14:58:16,405 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 11564 transitions. Word has length 48 [2021-05-03 14:58:16,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:16,406 INFO L480 AbstractCegarLoop]: Abstraction has 4454 states and 11564 transitions. [2021-05-03 14:58:16,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:16,406 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 11564 transitions. [2021-05-03 14:58:16,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:16,411 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:16,411 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:16,411 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-05-03 14:58:16,411 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:16,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:16,412 INFO L82 PathProgramCache]: Analyzing trace with hash -999562176, now seen corresponding path program 34 times [2021-05-03 14:58:16,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:16,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985300668] [2021-05-03 14:58:16,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:16,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:16,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985300668] [2021-05-03 14:58:16,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:16,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 14:58:16,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095502546] [2021-05-03 14:58:16,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 14:58:16,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:16,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 14:58:16,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-03 14:58:16,503 INFO L87 Difference]: Start difference. First operand 4454 states and 11564 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:16,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:16,706 INFO L93 Difference]: Finished difference Result 6116 states and 15828 transitions. [2021-05-03 14:58:16,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 14:58:16,706 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:16,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:16,712 INFO L225 Difference]: With dead ends: 6116 [2021-05-03 14:58:16,712 INFO L226 Difference]: Without dead ends: 5989 [2021-05-03 14:58:16,712 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 97.2ms TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-05-03 14:58:16,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5989 states. [2021-05-03 14:58:16,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5989 to 4592. [2021-05-03 14:58:16,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4592 states, 4591 states have (on average 2.6003049444565454) internal successors, (11938), 4591 states have internal predecessors, (11938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:16,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4592 states to 4592 states and 11938 transitions. [2021-05-03 14:58:16,782 INFO L78 Accepts]: Start accepts. Automaton has 4592 states and 11938 transitions. Word has length 48 [2021-05-03 14:58:16,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:16,783 INFO L480 AbstractCegarLoop]: Abstraction has 4592 states and 11938 transitions. [2021-05-03 14:58:16,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:16,783 INFO L276 IsEmpty]: Start isEmpty. Operand 4592 states and 11938 transitions. [2021-05-03 14:58:16,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:16,787 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:16,787 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:16,787 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-05-03 14:58:16,787 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:16,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:16,787 INFO L82 PathProgramCache]: Analyzing trace with hash 76293474, now seen corresponding path program 35 times [2021-05-03 14:58:16,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:16,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960638535] [2021-05-03 14:58:16,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:16,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:16,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960638535] [2021-05-03 14:58:16,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:16,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-03 14:58:16,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077593392] [2021-05-03 14:58:16,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-03 14:58:16,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:16,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-03 14:58:16,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 14:58:16,798 INFO L87 Difference]: Start difference. First operand 4592 states and 11938 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:16,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:16,814 INFO L93 Difference]: Finished difference Result 4428 states and 11266 transitions. [2021-05-03 14:58:16,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 14:58:16,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:16,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:16,820 INFO L225 Difference]: With dead ends: 4428 [2021-05-03 14:58:16,820 INFO L226 Difference]: Without dead ends: 4428 [2021-05-03 14:58:16,820 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 14:58:16,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4428 states. [2021-05-03 14:58:16,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4428 to 4428. [2021-05-03 14:58:16,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4428 states, 4427 states have (on average 2.544838491077479) internal successors, (11266), 4427 states have internal predecessors, (11266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:16,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 11266 transitions. [2021-05-03 14:58:16,894 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 11266 transitions. Word has length 48 [2021-05-03 14:58:16,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:16,894 INFO L480 AbstractCegarLoop]: Abstraction has 4428 states and 11266 transitions. [2021-05-03 14:58:16,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:16,895 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 11266 transitions. [2021-05-03 14:58:16,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:16,899 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:16,899 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:16,899 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-05-03 14:58:16,899 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:16,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:16,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1673336162, now seen corresponding path program 36 times [2021-05-03 14:58:16,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:16,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771570863] [2021-05-03 14:58:16,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:16,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:16,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771570863] [2021-05-03 14:58:16,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:16,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 14:58:16,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723694328] [2021-05-03 14:58:16,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 14:58:16,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:16,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 14:58:16,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:16,967 INFO L87 Difference]: Start difference. First operand 4428 states and 11266 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:17,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:17,156 INFO L93 Difference]: Finished difference Result 5284 states and 13236 transitions. [2021-05-03 14:58:17,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-03 14:58:17,157 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:17,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:17,162 INFO L225 Difference]: With dead ends: 5284 [2021-05-03 14:58:17,163 INFO L226 Difference]: Without dead ends: 4898 [2021-05-03 14:58:17,163 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 133.8ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-05-03 14:58:17,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4898 states. [2021-05-03 14:58:17,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4898 to 4331. [2021-05-03 14:58:17,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4331 states, 4330 states have (on average 2.5293302540415703) internal successors, (10952), 4330 states have internal predecessors, (10952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:17,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4331 states to 4331 states and 10952 transitions. [2021-05-03 14:58:17,259 INFO L78 Accepts]: Start accepts. Automaton has 4331 states and 10952 transitions. Word has length 48 [2021-05-03 14:58:17,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:17,259 INFO L480 AbstractCegarLoop]: Abstraction has 4331 states and 10952 transitions. [2021-05-03 14:58:17,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:17,259 INFO L276 IsEmpty]: Start isEmpty. Operand 4331 states and 10952 transitions. [2021-05-03 14:58:17,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:17,265 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:17,265 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:17,265 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-05-03 14:58:17,265 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:17,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:17,266 INFO L82 PathProgramCache]: Analyzing trace with hash -869937714, now seen corresponding path program 37 times [2021-05-03 14:58:17,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:17,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398352702] [2021-05-03 14:58:17,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:17,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:17,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398352702] [2021-05-03 14:58:17,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:17,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 14:58:17,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21469745] [2021-05-03 14:58:17,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 14:58:17,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:17,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 14:58:17,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:17,339 INFO L87 Difference]: Start difference. First operand 4331 states and 10952 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:17,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:17,593 INFO L93 Difference]: Finished difference Result 6472 states and 16461 transitions. [2021-05-03 14:58:17,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-03 14:58:17,594 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:17,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:17,602 INFO L225 Difference]: With dead ends: 6472 [2021-05-03 14:58:17,602 INFO L226 Difference]: Without dead ends: 6307 [2021-05-03 14:58:17,603 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 88.8ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-05-03 14:58:17,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6307 states. [2021-05-03 14:58:17,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6307 to 4048. [2021-05-03 14:58:17,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4048 states, 4047 states have (on average 2.520138374104275) internal successors, (10199), 4047 states have internal predecessors, (10199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:17,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 10199 transitions. [2021-05-03 14:58:17,681 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 10199 transitions. Word has length 48 [2021-05-03 14:58:17,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:17,681 INFO L480 AbstractCegarLoop]: Abstraction has 4048 states and 10199 transitions. [2021-05-03 14:58:17,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:17,682 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 10199 transitions. [2021-05-03 14:58:17,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:17,685 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:17,685 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:17,685 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-05-03 14:58:17,685 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:17,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:17,686 INFO L82 PathProgramCache]: Analyzing trace with hash -221230618, now seen corresponding path program 38 times [2021-05-03 14:58:17,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:17,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214389610] [2021-05-03 14:58:17,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:17,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:17,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214389610] [2021-05-03 14:58:17,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:17,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 14:58:17,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327821028] [2021-05-03 14:58:17,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 14:58:17,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:17,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 14:58:17,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:17,782 INFO L87 Difference]: Start difference. First operand 4048 states and 10199 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:18,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:18,034 INFO L93 Difference]: Finished difference Result 6462 states and 16010 transitions. [2021-05-03 14:58:18,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-03 14:58:18,034 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:18,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:18,041 INFO L225 Difference]: With dead ends: 6462 [2021-05-03 14:58:18,041 INFO L226 Difference]: Without dead ends: 6370 [2021-05-03 14:58:18,042 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 126.9ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-05-03 14:58:18,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6370 states. [2021-05-03 14:58:18,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6370 to 4653. [2021-05-03 14:58:18,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4653 states, 4652 states have (on average 2.498065348237317) internal successors, (11621), 4652 states have internal predecessors, (11621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:18,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4653 states to 4653 states and 11621 transitions. [2021-05-03 14:58:18,112 INFO L78 Accepts]: Start accepts. Automaton has 4653 states and 11621 transitions. Word has length 48 [2021-05-03 14:58:18,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:18,112 INFO L480 AbstractCegarLoop]: Abstraction has 4653 states and 11621 transitions. [2021-05-03 14:58:18,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:18,112 INFO L276 IsEmpty]: Start isEmpty. Operand 4653 states and 11621 transitions. [2021-05-03 14:58:18,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:18,116 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:18,116 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:18,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-05-03 14:58:18,116 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:18,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:18,117 INFO L82 PathProgramCache]: Analyzing trace with hash 2020828136, now seen corresponding path program 39 times [2021-05-03 14:58:18,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:18,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906546455] [2021-05-03 14:58:18,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:18,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:18,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906546455] [2021-05-03 14:58:18,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:18,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 14:58:18,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988762842] [2021-05-03 14:58:18,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 14:58:18,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:18,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 14:58:18,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:18,213 INFO L87 Difference]: Start difference. First operand 4653 states and 11621 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:18,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:18,503 INFO L93 Difference]: Finished difference Result 6009 states and 14745 transitions. [2021-05-03 14:58:18,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-03 14:58:18,503 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:18,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:18,510 INFO L225 Difference]: With dead ends: 6009 [2021-05-03 14:58:18,511 INFO L226 Difference]: Without dead ends: 5842 [2021-05-03 14:58:18,511 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 131.0ms TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-05-03 14:58:18,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5842 states. [2021-05-03 14:58:18,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5842 to 4556. [2021-05-03 14:58:18,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4556 states, 4555 states have (on average 2.4990120746432494) internal successors, (11383), 4555 states have internal predecessors, (11383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:18,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4556 states to 4556 states and 11383 transitions. [2021-05-03 14:58:18,646 INFO L78 Accepts]: Start accepts. Automaton has 4556 states and 11383 transitions. Word has length 48 [2021-05-03 14:58:18,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:18,646 INFO L480 AbstractCegarLoop]: Abstraction has 4556 states and 11383 transitions. [2021-05-03 14:58:18,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:18,646 INFO L276 IsEmpty]: Start isEmpty. Operand 4556 states and 11383 transitions. [2021-05-03 14:58:18,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:18,652 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:18,652 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:18,652 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-05-03 14:58:18,652 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:18,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:18,652 INFO L82 PathProgramCache]: Analyzing trace with hash -458909894, now seen corresponding path program 40 times [2021-05-03 14:58:18,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:18,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067539338] [2021-05-03 14:58:18,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:18,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:18,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067539338] [2021-05-03 14:58:18,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:18,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 14:58:18,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094044160] [2021-05-03 14:58:18,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 14:58:18,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:18,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 14:58:18,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:18,722 INFO L87 Difference]: Start difference. First operand 4556 states and 11383 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:18,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:18,890 INFO L93 Difference]: Finished difference Result 5244 states and 12929 transitions. [2021-05-03 14:58:18,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-03 14:58:18,890 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:18,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:18,896 INFO L225 Difference]: With dead ends: 5244 [2021-05-03 14:58:18,896 INFO L226 Difference]: Without dead ends: 5114 [2021-05-03 14:58:18,897 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 127.4ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-05-03 14:58:18,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5114 states. [2021-05-03 14:58:18,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5114 to 4563. [2021-05-03 14:58:18,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4563 states, 4562 states have (on average 2.493643138974134) internal successors, (11376), 4562 states have internal predecessors, (11376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:18,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 11376 transitions. [2021-05-03 14:58:18,983 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 11376 transitions. Word has length 48 [2021-05-03 14:58:18,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:18,983 INFO L480 AbstractCegarLoop]: Abstraction has 4563 states and 11376 transitions. [2021-05-03 14:58:18,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:18,983 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 11376 transitions. [2021-05-03 14:58:18,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:18,989 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:18,989 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:18,989 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-05-03 14:58:18,989 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:18,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:18,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1054099754, now seen corresponding path program 41 times [2021-05-03 14:58:18,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:18,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433190743] [2021-05-03 14:58:18,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:19,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:19,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433190743] [2021-05-03 14:58:19,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:19,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 14:58:19,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548753465] [2021-05-03 14:58:19,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 14:58:19,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:19,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 14:58:19,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-05-03 14:58:19,070 INFO L87 Difference]: Start difference. First operand 4563 states and 11376 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:19,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:19,341 INFO L93 Difference]: Finished difference Result 5431 states and 13325 transitions. [2021-05-03 14:58:19,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-03 14:58:19,341 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:19,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:19,346 INFO L225 Difference]: With dead ends: 5431 [2021-05-03 14:58:19,346 INFO L226 Difference]: Without dead ends: 5375 [2021-05-03 14:58:19,346 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 125.6ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-05-03 14:58:19,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5375 states. [2021-05-03 14:58:19,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5375 to 4647. [2021-05-03 14:58:19,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4647 states, 4646 states have (on average 2.483426603529918) internal successors, (11538), 4646 states have internal predecessors, (11538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:19,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4647 states to 4647 states and 11538 transitions. [2021-05-03 14:58:19,409 INFO L78 Accepts]: Start accepts. Automaton has 4647 states and 11538 transitions. Word has length 48 [2021-05-03 14:58:19,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:19,409 INFO L480 AbstractCegarLoop]: Abstraction has 4647 states and 11538 transitions. [2021-05-03 14:58:19,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:19,409 INFO L276 IsEmpty]: Start isEmpty. Operand 4647 states and 11538 transitions. [2021-05-03 14:58:19,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:19,413 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:19,413 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:19,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-05-03 14:58:19,413 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:19,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:19,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1231787908, now seen corresponding path program 42 times [2021-05-03 14:58:19,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:19,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965698683] [2021-05-03 14:58:19,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:19,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:19,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965698683] [2021-05-03 14:58:19,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:19,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 14:58:19,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255690818] [2021-05-03 14:58:19,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 14:58:19,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:19,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 14:58:19,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:19,525 INFO L87 Difference]: Start difference. First operand 4647 states and 11538 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:19,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:19,810 INFO L93 Difference]: Finished difference Result 5656 states and 13754 transitions. [2021-05-03 14:58:19,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-03 14:58:19,811 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:19,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:19,816 INFO L225 Difference]: With dead ends: 5656 [2021-05-03 14:58:19,816 INFO L226 Difference]: Without dead ends: 5570 [2021-05-03 14:58:19,816 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 143.0ms TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-05-03 14:58:19,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5570 states. [2021-05-03 14:58:19,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5570 to 4627. [2021-05-03 14:58:19,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4626 states have (on average 2.470817120622568) internal successors, (11430), 4626 states have internal predecessors, (11430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:19,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 11430 transitions. [2021-05-03 14:58:19,881 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 11430 transitions. Word has length 48 [2021-05-03 14:58:19,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:19,881 INFO L480 AbstractCegarLoop]: Abstraction has 4627 states and 11430 transitions. [2021-05-03 14:58:19,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:19,881 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 11430 transitions. [2021-05-03 14:58:19,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:19,885 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:19,885 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:19,885 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-05-03 14:58:19,886 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:19,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:19,886 INFO L82 PathProgramCache]: Analyzing trace with hash -821120634, now seen corresponding path program 43 times [2021-05-03 14:58:19,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:19,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853297348] [2021-05-03 14:58:19,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:19,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:19,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853297348] [2021-05-03 14:58:19,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:19,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 14:58:19,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955275503] [2021-05-03 14:58:19,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 14:58:19,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:19,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 14:58:19,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:19,983 INFO L87 Difference]: Start difference. First operand 4627 states and 11430 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:20,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:20,226 INFO L93 Difference]: Finished difference Result 5170 states and 12444 transitions. [2021-05-03 14:58:20,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-03 14:58:20,226 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:20,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:20,231 INFO L225 Difference]: With dead ends: 5170 [2021-05-03 14:58:20,231 INFO L226 Difference]: Without dead ends: 5005 [2021-05-03 14:58:20,231 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 113.5ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-05-03 14:58:20,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5005 states. [2021-05-03 14:58:20,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5005 to 3937. [2021-05-03 14:58:20,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3937 states, 3936 states have (on average 2.448932926829268) internal successors, (9639), 3936 states have internal predecessors, (9639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:20,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3937 states to 3937 states and 9639 transitions. [2021-05-03 14:58:20,310 INFO L78 Accepts]: Start accepts. Automaton has 3937 states and 9639 transitions. Word has length 48 [2021-05-03 14:58:20,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:20,310 INFO L480 AbstractCegarLoop]: Abstraction has 3937 states and 9639 transitions. [2021-05-03 14:58:20,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:20,310 INFO L276 IsEmpty]: Start isEmpty. Operand 3937 states and 9639 transitions. [2021-05-03 14:58:20,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:20,315 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:20,315 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:20,316 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-05-03 14:58:20,316 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:20,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:20,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1660476924, now seen corresponding path program 44 times [2021-05-03 14:58:20,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:20,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79330351] [2021-05-03 14:58:20,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:20,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:20,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79330351] [2021-05-03 14:58:20,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:20,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-03 14:58:20,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524440240] [2021-05-03 14:58:20,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-03 14:58:20,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:20,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-03 14:58:20,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-05-03 14:58:20,443 INFO L87 Difference]: Start difference. First operand 3937 states and 9639 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:21,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:21,056 INFO L93 Difference]: Finished difference Result 6173 states and 14834 transitions. [2021-05-03 14:58:21,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-03 14:58:21,057 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:21,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:21,063 INFO L225 Difference]: With dead ends: 6173 [2021-05-03 14:58:21,063 INFO L226 Difference]: Without dead ends: 5460 [2021-05-03 14:58:21,064 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 250.3ms TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-05-03 14:58:21,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2021-05-03 14:58:21,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 3857. [2021-05-03 14:58:21,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3857 states, 3856 states have (on average 2.4517634854771786) internal successors, (9454), 3856 states have internal predecessors, (9454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:21,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3857 states to 3857 states and 9454 transitions. [2021-05-03 14:58:21,144 INFO L78 Accepts]: Start accepts. Automaton has 3857 states and 9454 transitions. Word has length 48 [2021-05-03 14:58:21,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:21,144 INFO L480 AbstractCegarLoop]: Abstraction has 3857 states and 9454 transitions. [2021-05-03 14:58:21,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:21,144 INFO L276 IsEmpty]: Start isEmpty. Operand 3857 states and 9454 transitions. [2021-05-03 14:58:21,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:21,149 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:21,149 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:21,149 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-05-03 14:58:21,149 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:21,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:21,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1838280150, now seen corresponding path program 45 times [2021-05-03 14:58:21,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:21,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731804909] [2021-05-03 14:58:21,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:21,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:21,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731804909] [2021-05-03 14:58:21,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:21,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 14:58:21,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102116271] [2021-05-03 14:58:21,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 14:58:21,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:21,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 14:58:21,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-05-03 14:58:21,221 INFO L87 Difference]: Start difference. First operand 3857 states and 9454 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:21,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:21,418 INFO L93 Difference]: Finished difference Result 6363 states and 15371 transitions. [2021-05-03 14:58:21,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-03 14:58:21,419 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:21,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:21,426 INFO L225 Difference]: With dead ends: 6363 [2021-05-03 14:58:21,426 INFO L226 Difference]: Without dead ends: 6304 [2021-05-03 14:58:21,427 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 75.8ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-05-03 14:58:21,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6304 states. [2021-05-03 14:58:21,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6304 to 3838. [2021-05-03 14:58:21,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3838 states, 3837 states have (on average 2.4516549387542352) internal successors, (9407), 3837 states have internal predecessors, (9407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:21,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3838 states to 3838 states and 9407 transitions. [2021-05-03 14:58:21,502 INFO L78 Accepts]: Start accepts. Automaton has 3838 states and 9407 transitions. Word has length 48 [2021-05-03 14:58:21,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:21,502 INFO L480 AbstractCegarLoop]: Abstraction has 3838 states and 9407 transitions. [2021-05-03 14:58:21,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:21,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3838 states and 9407 transitions. [2021-05-03 14:58:21,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:21,505 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:21,506 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:21,506 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-05-03 14:58:21,506 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:21,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:21,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1498241870, now seen corresponding path program 46 times [2021-05-03 14:58:21,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:21,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701417596] [2021-05-03 14:58:21,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:21,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701417596] [2021-05-03 14:58:21,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:21,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 14:58:21,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093908071] [2021-05-03 14:58:21,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 14:58:21,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:21,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 14:58:21,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:21,571 INFO L87 Difference]: Start difference. First operand 3838 states and 9407 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:21,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:21,711 INFO L93 Difference]: Finished difference Result 4459 states and 10799 transitions. [2021-05-03 14:58:21,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-03 14:58:21,711 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:21,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:21,715 INFO L225 Difference]: With dead ends: 4459 [2021-05-03 14:58:21,715 INFO L226 Difference]: Without dead ends: 4059 [2021-05-03 14:58:21,715 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 118.4ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-05-03 14:58:21,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4059 states. [2021-05-03 14:58:21,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4059 to 3663. [2021-05-03 14:58:21,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3663 states, 3662 states have (on average 2.4199890770071) internal successors, (8862), 3662 states have internal predecessors, (8862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:21,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3663 states to 3663 states and 8862 transitions. [2021-05-03 14:58:21,778 INFO L78 Accepts]: Start accepts. Automaton has 3663 states and 8862 transitions. Word has length 48 [2021-05-03 14:58:21,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:21,778 INFO L480 AbstractCegarLoop]: Abstraction has 3663 states and 8862 transitions. [2021-05-03 14:58:21,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:21,778 INFO L276 IsEmpty]: Start isEmpty. Operand 3663 states and 8862 transitions. [2021-05-03 14:58:21,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:21,783 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:21,783 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:21,783 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-05-03 14:58:21,784 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:21,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:21,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1704921652, now seen corresponding path program 47 times [2021-05-03 14:58:21,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:21,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255327515] [2021-05-03 14:58:21,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:21,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:21,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255327515] [2021-05-03 14:58:21,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:21,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-03 14:58:21,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971501218] [2021-05-03 14:58:21,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-03 14:58:21,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:21,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-03 14:58:21,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-05-03 14:58:21,908 INFO L87 Difference]: Start difference. First operand 3663 states and 8862 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:22,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:22,403 INFO L93 Difference]: Finished difference Result 7113 states and 16874 transitions. [2021-05-03 14:58:22,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-03 14:58:22,403 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:22,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:22,410 INFO L225 Difference]: With dead ends: 7113 [2021-05-03 14:58:22,410 INFO L226 Difference]: Without dead ends: 6604 [2021-05-03 14:58:22,410 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 268.2ms TimeCoverageRelationStatistics Valid=185, Invalid=415, Unknown=0, NotChecked=0, Total=600 [2021-05-03 14:58:22,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6604 states. [2021-05-03 14:58:22,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6604 to 4092. [2021-05-03 14:58:22,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4092 states, 4091 states have (on average 2.3967245172329505) internal successors, (9805), 4091 states have internal predecessors, (9805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:22,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4092 states to 4092 states and 9805 transitions. [2021-05-03 14:58:22,475 INFO L78 Accepts]: Start accepts. Automaton has 4092 states and 9805 transitions. Word has length 48 [2021-05-03 14:58:22,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:22,475 INFO L480 AbstractCegarLoop]: Abstraction has 4092 states and 9805 transitions. [2021-05-03 14:58:22,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:22,476 INFO L276 IsEmpty]: Start isEmpty. Operand 4092 states and 9805 transitions. [2021-05-03 14:58:22,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:22,479 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:22,479 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:22,479 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-05-03 14:58:22,479 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:22,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:22,480 INFO L82 PathProgramCache]: Analyzing trace with hash 527044882, now seen corresponding path program 48 times [2021-05-03 14:58:22,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:22,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720587593] [2021-05-03 14:58:22,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:22,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:22,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720587593] [2021-05-03 14:58:22,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:22,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-03 14:58:22,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751763834] [2021-05-03 14:58:22,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-03 14:58:22,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:22,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-03 14:58:22,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-05-03 14:58:22,597 INFO L87 Difference]: Start difference. First operand 4092 states and 9805 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:23,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:23,090 INFO L93 Difference]: Finished difference Result 6033 states and 14232 transitions. [2021-05-03 14:58:23,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-03 14:58:23,090 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:23,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:23,096 INFO L225 Difference]: With dead ends: 6033 [2021-05-03 14:58:23,096 INFO L226 Difference]: Without dead ends: 5614 [2021-05-03 14:58:23,097 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 298.0ms TimeCoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2021-05-03 14:58:23,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5614 states. [2021-05-03 14:58:23,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5614 to 3682. [2021-05-03 14:58:23,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3682 states, 3681 states have (on average 2.3993480032599837) internal successors, (8832), 3681 states have internal predecessors, (8832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:23,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3682 states to 3682 states and 8832 transitions. [2021-05-03 14:58:23,154 INFO L78 Accepts]: Start accepts. Automaton has 3682 states and 8832 transitions. Word has length 48 [2021-05-03 14:58:23,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:23,154 INFO L480 AbstractCegarLoop]: Abstraction has 3682 states and 8832 transitions. [2021-05-03 14:58:23,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:23,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3682 states and 8832 transitions. [2021-05-03 14:58:23,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:23,157 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:23,157 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:23,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-05-03 14:58:23,157 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:23,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:23,158 INFO L82 PathProgramCache]: Analyzing trace with hash -651091468, now seen corresponding path program 49 times [2021-05-03 14:58:23,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:23,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567853278] [2021-05-03 14:58:23,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:23,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:23,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567853278] [2021-05-03 14:58:23,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:23,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-03 14:58:23,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126960701] [2021-05-03 14:58:23,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-03 14:58:23,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:23,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-03 14:58:23,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-05-03 14:58:23,273 INFO L87 Difference]: Start difference. First operand 3682 states and 8832 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:23,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:23,732 INFO L93 Difference]: Finished difference Result 5430 states and 12727 transitions. [2021-05-03 14:58:23,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-03 14:58:23,733 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:23,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:23,737 INFO L225 Difference]: With dead ends: 5430 [2021-05-03 14:58:23,737 INFO L226 Difference]: Without dead ends: 5065 [2021-05-03 14:58:23,737 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 278.0ms TimeCoverageRelationStatistics Valid=201, Invalid=449, Unknown=0, NotChecked=0, Total=650 [2021-05-03 14:58:23,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5065 states. [2021-05-03 14:58:23,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5065 to 3634. [2021-05-03 14:58:23,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 3633 states have (on average 2.374896779521057) internal successors, (8628), 3633 states have internal predecessors, (8628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:23,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 8628 transitions. [2021-05-03 14:58:23,801 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 8628 transitions. Word has length 48 [2021-05-03 14:58:23,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:23,802 INFO L480 AbstractCegarLoop]: Abstraction has 3634 states and 8628 transitions. [2021-05-03 14:58:23,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:23,802 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 8628 transitions. [2021-05-03 14:58:23,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:23,805 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:23,805 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:23,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-05-03 14:58:23,805 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:23,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:23,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1828968238, now seen corresponding path program 50 times [2021-05-03 14:58:23,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:23,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799358174] [2021-05-03 14:58:23,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:23,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:23,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799358174] [2021-05-03 14:58:23,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:23,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-03 14:58:23,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549452621] [2021-05-03 14:58:23,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-03 14:58:23,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:23,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-03 14:58:23,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-05-03 14:58:23,915 INFO L87 Difference]: Start difference. First operand 3634 states and 8628 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:24,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:24,375 INFO L93 Difference]: Finished difference Result 4576 states and 10666 transitions. [2021-05-03 14:58:24,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-03 14:58:24,375 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:24,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:24,380 INFO L225 Difference]: With dead ends: 4576 [2021-05-03 14:58:24,380 INFO L226 Difference]: Without dead ends: 4099 [2021-05-03 14:58:24,381 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 293.6ms TimeCoverageRelationStatistics Valid=167, Invalid=385, Unknown=0, NotChecked=0, Total=552 [2021-05-03 14:58:24,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4099 states. [2021-05-03 14:58:24,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4099 to 2987. [2021-05-03 14:58:24,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2987 states, 2986 states have (on average 2.356664434025452) internal successors, (7037), 2986 states have internal predecessors, (7037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:24,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2987 states to 2987 states and 7037 transitions. [2021-05-03 14:58:24,438 INFO L78 Accepts]: Start accepts. Automaton has 2987 states and 7037 transitions. Word has length 48 [2021-05-03 14:58:24,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:24,439 INFO L480 AbstractCegarLoop]: Abstraction has 2987 states and 7037 transitions. [2021-05-03 14:58:24,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:24,439 INFO L276 IsEmpty]: Start isEmpty. Operand 2987 states and 7037 transitions. [2021-05-03 14:58:24,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:24,443 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:24,443 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:24,443 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-05-03 14:58:24,443 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:24,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:24,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1975627390, now seen corresponding path program 51 times [2021-05-03 14:58:24,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:24,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256436069] [2021-05-03 14:58:24,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:24,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:24,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256436069] [2021-05-03 14:58:24,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:24,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-03 14:58:24,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645237208] [2021-05-03 14:58:24,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-03 14:58:24,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:24,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-03 14:58:24,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-05-03 14:58:24,548 INFO L87 Difference]: Start difference. First operand 2987 states and 7037 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:24,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:24,662 INFO L93 Difference]: Finished difference Result 2987 states and 7019 transitions. [2021-05-03 14:58:24,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-03 14:58:24,662 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:24,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:24,665 INFO L225 Difference]: With dead ends: 2987 [2021-05-03 14:58:24,665 INFO L226 Difference]: Without dead ends: 2805 [2021-05-03 14:58:24,665 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 85.4ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-05-03 14:58:24,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2805 states. [2021-05-03 14:58:24,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2805 to 2805. [2021-05-03 14:58:24,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 2804 states have (on average 2.3619828815977177) internal successors, (6623), 2804 states have internal predecessors, (6623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:24,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 6623 transitions. [2021-05-03 14:58:24,699 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 6623 transitions. Word has length 48 [2021-05-03 14:58:24,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:24,699 INFO L480 AbstractCegarLoop]: Abstraction has 2805 states and 6623 transitions. [2021-05-03 14:58:24,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:24,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 6623 transitions. [2021-05-03 14:58:24,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:24,702 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:24,702 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:24,702 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-05-03 14:58:24,702 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:24,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:24,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1083335310, now seen corresponding path program 52 times [2021-05-03 14:58:24,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:24,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364280] [2021-05-03 14:58:24,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:24,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364280] [2021-05-03 14:58:24,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:24,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 14:58:24,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310208742] [2021-05-03 14:58:24,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 14:58:24,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:24,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 14:58:24,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:24,768 INFO L87 Difference]: Start difference. First operand 2805 states and 6623 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:24,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:24,926 INFO L93 Difference]: Finished difference Result 3229 states and 7522 transitions. [2021-05-03 14:58:24,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-03 14:58:24,926 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:24,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:24,929 INFO L225 Difference]: With dead ends: 3229 [2021-05-03 14:58:24,929 INFO L226 Difference]: Without dead ends: 2714 [2021-05-03 14:58:24,929 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 124.1ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-05-03 14:58:24,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2714 states. [2021-05-03 14:58:24,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2714 to 2279. [2021-05-03 14:58:24,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 2278 states have (on average 2.320017559262511) internal successors, (5285), 2278 states have internal predecessors, (5285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:24,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 5285 transitions. [2021-05-03 14:58:24,956 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 5285 transitions. Word has length 48 [2021-05-03 14:58:24,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:24,957 INFO L480 AbstractCegarLoop]: Abstraction has 2279 states and 5285 transitions. [2021-05-03 14:58:24,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:24,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 5285 transitions. [2021-05-03 14:58:24,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:24,959 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:24,959 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:24,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-05-03 14:58:24,959 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:24,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:24,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1742602862, now seen corresponding path program 53 times [2021-05-03 14:58:24,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:24,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948319675] [2021-05-03 14:58:24,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:25,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:25,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948319675] [2021-05-03 14:58:25,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:25,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 14:58:25,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659254703] [2021-05-03 14:58:25,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 14:58:25,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:25,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 14:58:25,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-03 14:58:25,063 INFO L87 Difference]: Start difference. First operand 2279 states and 5285 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:25,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:25,222 INFO L93 Difference]: Finished difference Result 2208 states and 5049 transitions. [2021-05-03 14:58:25,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-03 14:58:25,223 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:25,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:25,225 INFO L225 Difference]: With dead ends: 2208 [2021-05-03 14:58:25,225 INFO L226 Difference]: Without dead ends: 2020 [2021-05-03 14:58:25,225 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 120.4ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-05-03 14:58:25,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2021-05-03 14:58:25,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2020. [2021-05-03 14:58:25,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 2019 states have (on average 2.2902426944031697) internal successors, (4624), 2019 states have internal predecessors, (4624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:25,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 4624 transitions. [2021-05-03 14:58:25,246 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 4624 transitions. Word has length 48 [2021-05-03 14:58:25,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:25,246 INFO L480 AbstractCegarLoop]: Abstraction has 2020 states and 4624 transitions. [2021-05-03 14:58:25,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:25,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 4624 transitions. [2021-05-03 14:58:25,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:25,248 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:25,248 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:25,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-05-03 14:58:25,248 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:25,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:25,248 INFO L82 PathProgramCache]: Analyzing trace with hash 668037194, now seen corresponding path program 54 times [2021-05-03 14:58:25,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:25,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146729018] [2021-05-03 14:58:25,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:25,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:25,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146729018] [2021-05-03 14:58:25,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:25,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 14:58:25,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430547713] [2021-05-03 14:58:25,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 14:58:25,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:25,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 14:58:25,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:25,407 INFO L87 Difference]: Start difference. First operand 2020 states and 4624 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:25,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:25,670 INFO L93 Difference]: Finished difference Result 2218 states and 4973 transitions. [2021-05-03 14:58:25,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-03 14:58:25,670 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:25,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:25,673 INFO L225 Difference]: With dead ends: 2218 [2021-05-03 14:58:25,673 INFO L226 Difference]: Without dead ends: 1636 [2021-05-03 14:58:25,673 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 195.3ms TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-05-03 14:58:25,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-05-03 14:58:25,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1526. [2021-05-03 14:58:25,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1525 states have (on average 2.2485245901639344) internal successors, (3429), 1525 states have internal predecessors, (3429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:25,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 3429 transitions. [2021-05-03 14:58:25,708 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 3429 transitions. Word has length 48 [2021-05-03 14:58:25,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:25,708 INFO L480 AbstractCegarLoop]: Abstraction has 1526 states and 3429 transitions. [2021-05-03 14:58:25,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:25,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 3429 transitions. [2021-05-03 14:58:25,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:25,710 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:25,710 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:25,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-05-03 14:58:25,710 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:25,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:25,711 INFO L82 PathProgramCache]: Analyzing trace with hash 736907338, now seen corresponding path program 55 times [2021-05-03 14:58:25,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:25,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131887932] [2021-05-03 14:58:25,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:25,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:25,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131887932] [2021-05-03 14:58:25,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:25,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-03 14:58:25,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655796456] [2021-05-03 14:58:25,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-03 14:58:25,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:25,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-03 14:58:25,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-05-03 14:58:25,983 INFO L87 Difference]: Start difference. First operand 1526 states and 3429 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:26,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:26,219 INFO L93 Difference]: Finished difference Result 1680 states and 3761 transitions. [2021-05-03 14:58:26,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-03 14:58:26,220 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:26,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:26,221 INFO L225 Difference]: With dead ends: 1680 [2021-05-03 14:58:26,221 INFO L226 Difference]: Without dead ends: 1620 [2021-05-03 14:58:26,222 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 251.4ms TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-05-03 14:58:26,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2021-05-03 14:58:26,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 1530. [2021-05-03 14:58:26,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1529 states have (on average 2.2465663832570306) internal successors, (3435), 1529 states have internal predecessors, (3435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:26,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 3435 transitions. [2021-05-03 14:58:26,241 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 3435 transitions. Word has length 48 [2021-05-03 14:58:26,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:26,241 INFO L480 AbstractCegarLoop]: Abstraction has 1530 states and 3435 transitions. [2021-05-03 14:58:26,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:26,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 3435 transitions. [2021-05-03 14:58:26,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:26,242 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:26,242 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:26,242 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-05-03 14:58:26,242 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:26,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:26,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1353956312, now seen corresponding path program 56 times [2021-05-03 14:58:26,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:26,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45985324] [2021-05-03 14:58:26,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:26,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:26,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45985324] [2021-05-03 14:58:26,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:26,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-03 14:58:26,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706216714] [2021-05-03 14:58:26,507 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-03 14:58:26,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:26,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-03 14:58:26,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-05-03 14:58:26,508 INFO L87 Difference]: Start difference. First operand 1530 states and 3435 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:26,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:26,765 INFO L93 Difference]: Finished difference Result 1640 states and 3667 transitions. [2021-05-03 14:58:26,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 14:58:26,766 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:26,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:26,767 INFO L225 Difference]: With dead ends: 1640 [2021-05-03 14:58:26,767 INFO L226 Difference]: Without dead ends: 1588 [2021-05-03 14:58:26,767 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 290.2ms TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-05-03 14:58:26,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2021-05-03 14:58:26,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 1542. [2021-05-03 14:58:26,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1542 states, 1541 states have (on average 2.2407527579493833) internal successors, (3453), 1541 states have internal predecessors, (3453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:26,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 3453 transitions. [2021-05-03 14:58:26,783 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 3453 transitions. Word has length 48 [2021-05-03 14:58:26,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:26,783 INFO L480 AbstractCegarLoop]: Abstraction has 1542 states and 3453 transitions. [2021-05-03 14:58:26,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:26,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 3453 transitions. [2021-05-03 14:58:26,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:26,785 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:26,785 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:26,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-05-03 14:58:26,785 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:26,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:26,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1517105260, now seen corresponding path program 57 times [2021-05-03 14:58:26,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:26,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984916293] [2021-05-03 14:58:26,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:26,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:26,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984916293] [2021-05-03 14:58:26,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:26,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 14:58:26,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013804130] [2021-05-03 14:58:26,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 14:58:26,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:26,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 14:58:26,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:26,870 INFO L87 Difference]: Start difference. First operand 1542 states and 3453 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:26,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:26,959 INFO L93 Difference]: Finished difference Result 1542 states and 3449 transitions. [2021-05-03 14:58:26,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-03 14:58:26,959 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:26,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:26,961 INFO L225 Difference]: With dead ends: 1542 [2021-05-03 14:58:26,961 INFO L226 Difference]: Without dead ends: 1517 [2021-05-03 14:58:26,961 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 59.8ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:26,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2021-05-03 14:58:26,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1517. [2021-05-03 14:58:26,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1516 states have (on average 2.246701846965699) internal successors, (3406), 1516 states have internal predecessors, (3406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:26,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 3406 transitions. [2021-05-03 14:58:26,976 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 3406 transitions. Word has length 48 [2021-05-03 14:58:26,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:26,976 INFO L480 AbstractCegarLoop]: Abstraction has 1517 states and 3406 transitions. [2021-05-03 14:58:26,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:26,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 3406 transitions. [2021-05-03 14:58:26,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:26,977 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:26,977 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:26,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-05-03 14:58:26,977 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:26,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:26,977 INFO L82 PathProgramCache]: Analyzing trace with hash 284530450, now seen corresponding path program 58 times [2021-05-03 14:58:26,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:26,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931904590] [2021-05-03 14:58:26,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:27,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:27,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931904590] [2021-05-03 14:58:27,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:27,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-03 14:58:27,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153589665] [2021-05-03 14:58:27,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-03 14:58:27,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:27,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-03 14:58:27,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-05-03 14:58:27,080 INFO L87 Difference]: Start difference. First operand 1517 states and 3406 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:27,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:27,256 INFO L93 Difference]: Finished difference Result 1584 states and 3548 transitions. [2021-05-03 14:58:27,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 14:58:27,256 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:27,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:27,258 INFO L225 Difference]: With dead ends: 1584 [2021-05-03 14:58:27,258 INFO L226 Difference]: Without dead ends: 1536 [2021-05-03 14:58:27,258 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 74.6ms TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-05-03 14:58:27,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2021-05-03 14:58:27,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1511. [2021-05-03 14:58:27,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1510 states have (on average 2.2437086092715233) internal successors, (3388), 1510 states have internal predecessors, (3388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:27,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 3388 transitions. [2021-05-03 14:58:27,280 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 3388 transitions. Word has length 48 [2021-05-03 14:58:27,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:27,280 INFO L480 AbstractCegarLoop]: Abstraction has 1511 states and 3388 transitions. [2021-05-03 14:58:27,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:27,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 3388 transitions. [2021-05-03 14:58:27,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:27,282 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:27,283 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:27,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-05-03 14:58:27,283 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:27,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:27,284 INFO L82 PathProgramCache]: Analyzing trace with hash 160779060, now seen corresponding path program 59 times [2021-05-03 14:58:27,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:27,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369538403] [2021-05-03 14:58:27,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:27,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:27,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369538403] [2021-05-03 14:58:27,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:27,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-03 14:58:27,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102397536] [2021-05-03 14:58:27,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-03 14:58:27,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:27,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-03 14:58:27,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-05-03 14:58:27,380 INFO L87 Difference]: Start difference. First operand 1511 states and 3388 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:27,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:27,549 INFO L93 Difference]: Finished difference Result 1594 states and 3546 transitions. [2021-05-03 14:58:27,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 14:58:27,551 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:27,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:27,552 INFO L225 Difference]: With dead ends: 1594 [2021-05-03 14:58:27,552 INFO L226 Difference]: Without dead ends: 1420 [2021-05-03 14:58:27,556 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 86.3ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-05-03 14:58:27,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-05-03 14:58:27,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1397. [2021-05-03 14:58:27,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1396 states have (on average 2.23567335243553) internal successors, (3121), 1396 states have internal predecessors, (3121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:27,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 3121 transitions. [2021-05-03 14:58:27,571 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 3121 transitions. Word has length 48 [2021-05-03 14:58:27,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:27,571 INFO L480 AbstractCegarLoop]: Abstraction has 1397 states and 3121 transitions. [2021-05-03 14:58:27,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:27,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 3121 transitions. [2021-05-03 14:58:27,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:27,572 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:27,572 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:27,572 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-05-03 14:58:27,572 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:27,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:27,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1268776298, now seen corresponding path program 60 times [2021-05-03 14:58:27,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:27,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364667944] [2021-05-03 14:58:27,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:27,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:27,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364667944] [2021-05-03 14:58:27,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:27,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 14:58:27,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992202026] [2021-05-03 14:58:27,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 14:58:27,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:27,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 14:58:27,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-05-03 14:58:27,680 INFO L87 Difference]: Start difference. First operand 1397 states and 3121 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:27,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:27,757 INFO L93 Difference]: Finished difference Result 1479 states and 3294 transitions. [2021-05-03 14:58:27,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-03 14:58:27,758 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:27,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:27,759 INFO L225 Difference]: With dead ends: 1479 [2021-05-03 14:58:27,759 INFO L226 Difference]: Without dead ends: 1328 [2021-05-03 14:58:27,760 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 88.2ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:27,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2021-05-03 14:58:27,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1328. [2021-05-03 14:58:27,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1327 states have (on average 2.235116804822909) internal successors, (2966), 1327 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:27,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 2966 transitions. [2021-05-03 14:58:27,773 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 2966 transitions. Word has length 48 [2021-05-03 14:58:27,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:27,774 INFO L480 AbstractCegarLoop]: Abstraction has 1328 states and 2966 transitions. [2021-05-03 14:58:27,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:27,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 2966 transitions. [2021-05-03 14:58:27,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:27,775 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:27,775 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:27,775 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-05-03 14:58:27,775 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:27,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:27,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1000608708, now seen corresponding path program 61 times [2021-05-03 14:58:27,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:27,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038860881] [2021-05-03 14:58:27,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:27,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:27,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038860881] [2021-05-03 14:58:27,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:27,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-03 14:58:27,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805049881] [2021-05-03 14:58:27,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-03 14:58:27,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:27,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-03 14:58:27,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-05-03 14:58:27,990 INFO L87 Difference]: Start difference. First operand 1328 states and 2966 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:28,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:28,259 INFO L93 Difference]: Finished difference Result 1438 states and 3197 transitions. [2021-05-03 14:58:28,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-03 14:58:28,259 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:28,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:28,261 INFO L225 Difference]: With dead ends: 1438 [2021-05-03 14:58:28,261 INFO L226 Difference]: Without dead ends: 1326 [2021-05-03 14:58:28,261 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 311.9ms TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-05-03 14:58:28,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2021-05-03 14:58:28,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1274. [2021-05-03 14:58:28,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1273 states have (on average 2.2505891594658287) internal successors, (2865), 1273 states have internal predecessors, (2865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:28,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 2865 transitions. [2021-05-03 14:58:28,273 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 2865 transitions. Word has length 48 [2021-05-03 14:58:28,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:28,273 INFO L480 AbstractCegarLoop]: Abstraction has 1274 states and 2865 transitions. [2021-05-03 14:58:28,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:28,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 2865 transitions. [2021-05-03 14:58:28,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:28,275 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:28,275 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:28,275 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-05-03 14:58:28,275 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:28,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:28,275 INFO L82 PathProgramCache]: Analyzing trace with hash -2017851146, now seen corresponding path program 62 times [2021-05-03 14:58:28,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:28,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363835946] [2021-05-03 14:58:28,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:28,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:28,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363835946] [2021-05-03 14:58:28,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:28,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-03 14:58:28,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746234482] [2021-05-03 14:58:28,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-03 14:58:28,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:28,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-03 14:58:28,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-03 14:58:28,345 INFO L87 Difference]: Start difference. First operand 1274 states and 2865 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:28,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:28,414 INFO L93 Difference]: Finished difference Result 1314 states and 2901 transitions. [2021-05-03 14:58:28,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-03 14:58:28,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:28,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:28,415 INFO L225 Difference]: With dead ends: 1314 [2021-05-03 14:58:28,415 INFO L226 Difference]: Without dead ends: 1274 [2021-05-03 14:58:28,416 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 58.2ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-05-03 14:58:28,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-05-03 14:58:28,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1274. [2021-05-03 14:58:28,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1273 states have (on average 2.2097407698350353) internal successors, (2813), 1273 states have internal predecessors, (2813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:28,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 2813 transitions. [2021-05-03 14:58:28,428 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 2813 transitions. Word has length 48 [2021-05-03 14:58:28,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:28,428 INFO L480 AbstractCegarLoop]: Abstraction has 1274 states and 2813 transitions. [2021-05-03 14:58:28,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:28,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 2813 transitions. [2021-05-03 14:58:28,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:28,429 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:28,429 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:28,430 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-05-03 14:58:28,430 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:28,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:28,430 INFO L82 PathProgramCache]: Analyzing trace with hash -583265802, now seen corresponding path program 63 times [2021-05-03 14:58:28,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:28,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557768351] [2021-05-03 14:58:28,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:28,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:28,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557768351] [2021-05-03 14:58:28,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:28,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 14:58:28,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730341864] [2021-05-03 14:58:28,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 14:58:28,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:28,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 14:58:28,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-03 14:58:28,537 INFO L87 Difference]: Start difference. First operand 1274 states and 2813 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:28,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:28,700 INFO L93 Difference]: Finished difference Result 1145 states and 2492 transitions. [2021-05-03 14:58:28,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-03 14:58:28,701 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:28,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:28,701 INFO L225 Difference]: With dead ends: 1145 [2021-05-03 14:58:28,701 INFO L226 Difference]: Without dead ends: 787 [2021-05-03 14:58:28,702 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 106.7ms TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-05-03 14:58:28,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-05-03 14:58:28,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 787. [2021-05-03 14:58:28,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 786 states have (on average 2.199745547073791) internal successors, (1729), 786 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:28,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1729 transitions. [2021-05-03 14:58:28,709 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1729 transitions. Word has length 48 [2021-05-03 14:58:28,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:28,709 INFO L480 AbstractCegarLoop]: Abstraction has 787 states and 1729 transitions. [2021-05-03 14:58:28,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:28,709 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1729 transitions. [2021-05-03 14:58:28,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:28,710 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:28,710 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:28,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-05-03 14:58:28,710 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:28,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:28,711 INFO L82 PathProgramCache]: Analyzing trace with hash 691999296, now seen corresponding path program 64 times [2021-05-03 14:58:28,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:28,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475955985] [2021-05-03 14:58:28,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:28,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:28,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475955985] [2021-05-03 14:58:28,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:28,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 14:58:28,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220945777] [2021-05-03 14:58:28,822 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 14:58:28,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:28,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 14:58:28,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:28,823 INFO L87 Difference]: Start difference. First operand 787 states and 1729 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:28,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:28,967 INFO L93 Difference]: Finished difference Result 989 states and 2142 transitions. [2021-05-03 14:58:28,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-03 14:58:28,967 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:28,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:28,968 INFO L225 Difference]: With dead ends: 989 [2021-05-03 14:58:28,968 INFO L226 Difference]: Without dead ends: 819 [2021-05-03 14:58:28,969 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 87.1ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:28,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2021-05-03 14:58:28,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 609. [2021-05-03 14:58:28,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 608 states have (on average 2.1266447368421053) internal successors, (1293), 608 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:28,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 1293 transitions. [2021-05-03 14:58:28,979 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 1293 transitions. Word has length 48 [2021-05-03 14:58:28,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:28,979 INFO L480 AbstractCegarLoop]: Abstraction has 609 states and 1293 transitions. [2021-05-03 14:58:28,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:28,980 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 1293 transitions. [2021-05-03 14:58:28,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:28,980 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:28,981 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:28,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-05-03 14:58:28,981 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:28,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:28,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1286069184, now seen corresponding path program 65 times [2021-05-03 14:58:28,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:28,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439549283] [2021-05-03 14:58:28,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:29,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:29,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439549283] [2021-05-03 14:58:29,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:29,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 14:58:29,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917364756] [2021-05-03 14:58:29,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 14:58:29,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:29,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 14:58:29,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-05-03 14:58:29,093 INFO L87 Difference]: Start difference. First operand 609 states and 1293 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:29,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:29,176 INFO L93 Difference]: Finished difference Result 682 states and 1437 transitions. [2021-05-03 14:58:29,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-03 14:58:29,176 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:29,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:29,177 INFO L225 Difference]: With dead ends: 682 [2021-05-03 14:58:29,177 INFO L226 Difference]: Without dead ends: 517 [2021-05-03 14:58:29,177 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 82.1ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-05-03 14:58:29,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2021-05-03 14:58:29,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 377. [2021-05-03 14:58:29,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.0611702127659575) internal successors, (775), 376 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:29,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 775 transitions. [2021-05-03 14:58:29,181 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 775 transitions. Word has length 48 [2021-05-03 14:58:29,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:29,181 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 775 transitions. [2021-05-03 14:58:29,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:29,181 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 775 transitions. [2021-05-03 14:58:29,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:29,181 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:29,181 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:29,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-05-03 14:58:29,181 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:29,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:29,182 INFO L82 PathProgramCache]: Analyzing trace with hash 492803074, now seen corresponding path program 66 times [2021-05-03 14:58:29,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:29,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837334835] [2021-05-03 14:58:29,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:29,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:29,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837334835] [2021-05-03 14:58:29,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:29,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 14:58:29,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200635224] [2021-05-03 14:58:29,251 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 14:58:29,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:29,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 14:58:29,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-05-03 14:58:29,251 INFO L87 Difference]: Start difference. First operand 377 states and 775 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:29,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:29,321 INFO L93 Difference]: Finished difference Result 281 states and 555 transitions. [2021-05-03 14:58:29,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-03 14:58:29,323 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:29,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:29,323 INFO L225 Difference]: With dead ends: 281 [2021-05-03 14:58:29,323 INFO L226 Difference]: Without dead ends: 165 [2021-05-03 14:58:29,323 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 47.5ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-05-03 14:58:29,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-05-03 14:58:29,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2021-05-03 14:58:29,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.9390243902439024) internal successors, (318), 164 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:29,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 318 transitions. [2021-05-03 14:58:29,327 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 318 transitions. Word has length 48 [2021-05-03 14:58:29,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:29,327 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 318 transitions. [2021-05-03 14:58:29,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:29,327 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 318 transitions. [2021-05-03 14:58:29,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:29,327 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:29,328 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:29,328 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-05-03 14:58:29,328 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:29,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:29,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1020711098, now seen corresponding path program 67 times [2021-05-03 14:58:29,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:29,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94634222] [2021-05-03 14:58:29,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:29,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:29,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94634222] [2021-05-03 14:58:29,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:29,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 14:58:29,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530406253] [2021-05-03 14:58:29,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 14:58:29,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:29,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 14:58:29,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:29,519 INFO L87 Difference]: Start difference. First operand 165 states and 318 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:29,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:29,628 INFO L93 Difference]: Finished difference Result 187 states and 357 transitions. [2021-05-03 14:58:29,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 14:58:29,629 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:29,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:29,629 INFO L225 Difference]: With dead ends: 187 [2021-05-03 14:58:29,629 INFO L226 Difference]: Without dead ends: 161 [2021-05-03 14:58:29,629 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 179.1ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-05-03 14:58:29,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-05-03 14:58:29,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2021-05-03 14:58:29,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.925) internal successors, (308), 160 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:29,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 308 transitions. [2021-05-03 14:58:29,631 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 308 transitions. Word has length 48 [2021-05-03 14:58:29,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:29,632 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 308 transitions. [2021-05-03 14:58:29,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:29,632 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 308 transitions. [2021-05-03 14:58:29,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 14:58:29,632 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:58:29,632 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:58:29,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-05-03 14:58:29,632 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:58:29,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:58:29,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1432754524, now seen corresponding path program 68 times [2021-05-03 14:58:29,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:58:29,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220612397] [2021-05-03 14:58:29,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:58:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:58:29,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:58:29,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220612397] [2021-05-03 14:58:29,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:58:29,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 14:58:29,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258253168] [2021-05-03 14:58:29,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 14:58:29,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:58:29,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 14:58:29,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-05-03 14:58:29,807 INFO L87 Difference]: Start difference. First operand 161 states and 308 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:29,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:58:29,870 INFO L93 Difference]: Finished difference Result 78 states and 139 transitions. [2021-05-03 14:58:29,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 14:58:29,870 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-05-03 14:58:29,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:58:29,870 INFO L225 Difference]: With dead ends: 78 [2021-05-03 14:58:29,870 INFO L226 Difference]: Without dead ends: 0 [2021-05-03 14:58:29,871 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 160.3ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-05-03 14:58:29,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-03 14:58:29,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-03 14:58:29,871 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) [2021-05-03 14:58:29,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-03 14:58:29,871 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2021-05-03 14:58:29,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:58:29,871 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-03 14:58:29,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:58:29,871 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-03 14:58:29,871 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-03 14:58:29,871 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-05-03 14:58:29,874 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.05 02:58:29 BasicIcfg [2021-05-03 14:58:29,874 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-03 14:58:29,875 INFO L168 Benchmark]: Toolchain (without parser) took 30535.96 ms. Allocated memory was 367.0 MB in the beginning and 966.8 MB in the end (delta: 599.8 MB). Free memory was 347.2 MB in the beginning and 564.7 MB in the end (delta: -217.5 MB). Peak memory consumption was 382.8 MB. Max. memory is 16.0 GB. [2021-05-03 14:58:29,875 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.17 ms. Allocated memory is still 367.0 MB. Free memory was 348.4 MB in the beginning and 348.3 MB in the end (delta: 65.7 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-03 14:58:29,875 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.07 ms. Allocated memory is still 367.0 MB. Free memory was 347.1 MB in the beginning and 345.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-03 14:58:29,875 INFO L168 Benchmark]: Boogie Preprocessor took 32.02 ms. Allocated memory is still 367.0 MB. Free memory was 345.6 MB in the beginning and 344.7 MB in the end (delta: 938.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-03 14:58:29,875 INFO L168 Benchmark]: RCFGBuilder took 246.35 ms. Allocated memory is still 367.0 MB. Free memory was 344.6 MB in the beginning and 331.0 MB in the end (delta: 13.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-05-03 14:58:29,875 INFO L168 Benchmark]: TraceAbstraction took 30221.06 ms. Allocated memory was 367.0 MB in the beginning and 966.8 MB in the end (delta: 599.8 MB). Free memory was 330.5 MB in the beginning and 564.7 MB in the end (delta: -234.2 MB). Peak memory consumption was 366.0 MB. Max. memory is 16.0 GB. [2021-05-03 14:58:29,876 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 0.17 ms. Allocated memory is still 367.0 MB. Free memory was 348.4 MB in the beginning and 348.3 MB in the end (delta: 65.7 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 32.07 ms. Allocated memory is still 367.0 MB. Free memory was 347.1 MB in the beginning and 345.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 32.02 ms. Allocated memory is still 367.0 MB. Free memory was 345.6 MB in the beginning and 344.7 MB in the end (delta: 938.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 246.35 ms. Allocated memory is still 367.0 MB. Free memory was 344.6 MB in the beginning and 331.0 MB in the end (delta: 13.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 30221.06 ms. Allocated memory was 367.0 MB in the beginning and 966.8 MB in the end (delta: 599.8 MB). Free memory was 330.5 MB in the beginning and 564.7 MB in the end (delta: -234.2 MB). Peak memory consumption was 366.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 82]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 30123.7ms, OverallIterations: 68, TraceHistogramMax: 1, EmptinessCheckTime: 354.0ms, AutomataDifference: 16319.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 229.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6653 SDtfs, 9922 SDslu, 24297 SDs, 0 SdLazy, 16224 SolverSat, 2216 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8416.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 905 GetRequests, 167 SyntacticMatches, 31 SemanticMatches, 707 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1399 ImplicationChecksByTransitivity, 8327.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5124occurred in iteration=32, InterpolantAutomatonStates: 720, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 5121.0ms AutomataMinimizationTime, 68 MinimizatonAttempts, 48474 StatesRemovedByMinimization, 56 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 62.1ms SsaConstructionTime, 465.4ms SatisfiabilityAnalysisTime, 7170.3ms InterpolantComputationTime, 3264 NumberOfCodeBlocks, 3264 NumberOfCodeBlocksAsserted, 68 NumberOfCheckSat, 3196 ConstructedInterpolants, 0 QuantifiedInterpolants, 22557 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 68 InterpolantComputations, 68 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...