/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d47b94137d5c7dd60722882962a90fb345e61909-d47b941 [2021-05-03 15:12:26,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-03 15:12:26,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-03 15:12:26,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-03 15:12:26,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-03 15:12:26,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-03 15:12:26,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-03 15:12:26,147 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 15:12:26,167 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-03 15:12:26,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-03 15:12:26,168 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-03 15:12:26,168 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-03 15:12:26,170 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-03 15:12:26,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-03 15:12:26,170 INFO L138 SettingsManager]: * Use SBE=true [2021-05-03 15:12:26,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-03 15:12:26,170 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-03 15:12:26,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-03 15:12:26,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-03 15:12:26,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-03 15:12:26,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-03 15:12:26,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-03 15:12:26,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-03 15:12:26,171 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-03 15:12:26,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-03 15:12:26,172 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-03 15:12:26,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-03 15:12:26,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-03 15:12:26,172 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-03 15:12:26,172 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-03 15:12:26,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-03 15:12:26,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-03 15:12:26,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-03 15:12:26,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-03 15:12:26,173 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-03 15:12:26,173 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-03 15:12:26,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-03 15:12:26,173 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-03 15:12:26,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-03 15:12:26,173 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-03 15:12:26,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-03 15:12:26,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-03 15:12:26,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-03 15:12:26,507 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-05-03 15:12:26,508 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-05-03 15:12:26,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl [2021-05-03 15:12:26,510 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl' [2021-05-03 15:12:26,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-03 15:12:26,565 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-03 15:12:26,569 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-03 15:12:26,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-03 15:12:26,570 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-03 15:12:26,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 03:12:26" (1/1) ... [2021-05-03 15:12:26,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 03:12:26" (1/1) ... [2021-05-03 15:12:26,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-03 15:12:26,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-03 15:12:26,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-03 15:12:26,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-03 15:12:26,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 03:12:26" (1/1) ... [2021-05-03 15:12:26,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 03:12:26" (1/1) ... [2021-05-03 15:12:26,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 03:12:26" (1/1) ... [2021-05-03 15:12:26,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 03:12:26" (1/1) ... [2021-05-03 15:12:26,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 03:12:26" (1/1) ... [2021-05-03 15:12:26,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 03:12:26" (1/1) ... [2021-05-03 15:12:26,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 03:12:26" (1/1) ... [2021-05-03 15:12:26,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-03 15:12:26,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-03 15:12:26,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-03 15:12:26,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-03 15:12:26,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 03:12:26" (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 15:12:26,692 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-05-03 15:12:26,692 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-05-03 15:12:26,692 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-05-03 15:12:26,693 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-05-03 15:12:26,693 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-05-03 15:12:26,693 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-05-03 15:12:26,693 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-05-03 15:12:26,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-03 15:12:26,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-03 15:12:26,693 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-05-03 15:12:26,694 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-05-03 15:12:26,694 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-05-03 15:12:26,695 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-05-03 15:12:26,696 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-05-03 15:12:26,696 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-05-03 15:12:26,697 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-05-03 15:12:26,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-05-03 15:12:26,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-05-03 15:12:26,698 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 15:12:26,989 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-03 15:12:26,989 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-03 15:12:26,991 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 03:12:26 BoogieIcfgContainer [2021-05-03 15:12:26,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-03 15:12:26,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-03 15:12:26,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-03 15:12:26,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-03 15:12:26,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 03:12:26" (1/2) ... [2021-05-03 15:12:26,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7e4289 and model type ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 03:12:26, skipping insertion in model container [2021-05-03 15:12:26,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 03:12:26" (2/2) ... [2021-05-03 15:12:26,999 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-5.wvr.bpl [2021-05-03 15:12:27,012 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-03 15:12:27,013 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-03 15:12:27,017 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-03 15:12:27,018 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-03 15:12:27,093 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-05-03 15:12:27,111 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-05-03 15:12:27,130 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-03 15:12:27,130 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-03 15:12:27,130 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-03 15:12:27,136 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-03 15:12:27,137 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-03 15:12:27,137 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-03 15:12:27,137 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-03 15:12:27,137 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-03 15:12:27,148 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 46 transitions, 132 flow [2021-05-03 15:12:28,999 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 12446 states, 12444 states have (on average 4.187078109932497) internal successors, (52104), 12445 states have internal predecessors, (52104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:29,048 INFO L276 IsEmpty]: Start isEmpty. Operand has 12446 states, 12444 states have (on average 4.187078109932497) internal successors, (52104), 12445 states have internal predecessors, (52104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:29,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:12:29,234 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:12:29,234 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] [2021-05-03 15:12:29,235 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:12:29,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:12:29,244 INFO L82 PathProgramCache]: Analyzing trace with hash -158356636, now seen corresponding path program 1 times [2021-05-03 15:12:29,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:12:29,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823695763] [2021-05-03 15:12:29,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:12:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:12:29,658 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 15:12:29,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823695763] [2021-05-03 15:12:29,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:12:29,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-03 15:12:29,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617496979] [2021-05-03 15:12:29,665 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-03 15:12:29,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:12:29,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-03 15:12:29,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-03 15:12:29,719 INFO L87 Difference]: Start difference. First operand has 12446 states, 12444 states have (on average 4.187078109932497) internal successors, (52104), 12445 states have internal predecessors, (52104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:30,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:12:30,164 INFO L93 Difference]: Finished difference Result 19654 states and 81351 transitions. [2021-05-03 15:12:30,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-03 15:12:30,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:12:30,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:12:30,357 INFO L225 Difference]: With dead ends: 19654 [2021-05-03 15:12:30,357 INFO L226 Difference]: Without dead ends: 13110 [2021-05-03 15:12:30,359 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 67.2ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-05-03 15:12:30,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13110 states. [2021-05-03 15:12:31,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13110 to 13110. [2021-05-03 15:12:31,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13110 states, 13109 states have (on average 4.060035090395911) internal successors, (53223), 13109 states have internal predecessors, (53223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:31,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13110 states to 13110 states and 53223 transitions. [2021-05-03 15:12:31,501 INFO L78 Accepts]: Start accepts. Automaton has 13110 states and 53223 transitions. Word has length 39 [2021-05-03 15:12:31,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:12:31,501 INFO L480 AbstractCegarLoop]: Abstraction has 13110 states and 53223 transitions. [2021-05-03 15:12:31,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:31,503 INFO L276 IsEmpty]: Start isEmpty. Operand 13110 states and 53223 transitions. [2021-05-03 15:12:31,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:12:31,570 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:12:31,571 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] [2021-05-03 15:12:31,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-03 15:12:31,572 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:12:31,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:12:31,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1270525438, now seen corresponding path program 2 times [2021-05-03 15:12:31,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:12:31,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272889002] [2021-05-03 15:12:31,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:12:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:12:31,673 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 15:12:31,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272889002] [2021-05-03 15:12:31,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:12:31,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-03 15:12:31,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167148655] [2021-05-03 15:12:31,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-03 15:12:31,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:12:31,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-03 15:12:31,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-03 15:12:31,679 INFO L87 Difference]: Start difference. First operand 13110 states and 53223 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:32,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:12:32,065 INFO L93 Difference]: Finished difference Result 13536 states and 54819 transitions. [2021-05-03 15:12:32,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-03 15:12:32,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:12:32,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:12:32,190 INFO L225 Difference]: With dead ends: 13536 [2021-05-03 15:12:32,190 INFO L226 Difference]: Without dead ends: 13536 [2021-05-03 15:12:32,191 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-03 15:12:32,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13536 states. [2021-05-03 15:12:32,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13536 to 13536. [2021-05-03 15:12:32,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13536 states, 13535 states have (on average 4.050166235685261) internal successors, (54819), 13535 states have internal predecessors, (54819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:32,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13536 states to 13536 states and 54819 transitions. [2021-05-03 15:12:32,952 INFO L78 Accepts]: Start accepts. Automaton has 13536 states and 54819 transitions. Word has length 39 [2021-05-03 15:12:32,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:12:32,953 INFO L480 AbstractCegarLoop]: Abstraction has 13536 states and 54819 transitions. [2021-05-03 15:12:32,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:32,953 INFO L276 IsEmpty]: Start isEmpty. Operand 13536 states and 54819 transitions. [2021-05-03 15:12:33,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:12:33,009 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:12:33,010 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] [2021-05-03 15:12:33,010 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-03 15:12:33,010 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:12:33,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:12:33,011 INFO L82 PathProgramCache]: Analyzing trace with hash -944687490, now seen corresponding path program 3 times [2021-05-03 15:12:33,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:12:33,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721240654] [2021-05-03 15:12:33,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:12:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:12:33,061 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 15:12:33,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721240654] [2021-05-03 15:12:33,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:12:33,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-03 15:12:33,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245447047] [2021-05-03 15:12:33,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-03 15:12:33,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:12:33,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-03 15:12:33,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-05-03 15:12:33,067 INFO L87 Difference]: Start difference. First operand 13536 states and 54819 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:33,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:12:33,707 INFO L93 Difference]: Finished difference Result 33455 states and 133148 transitions. [2021-05-03 15:12:33,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-03 15:12:33,707 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:12:33,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:12:33,967 INFO L225 Difference]: With dead ends: 33455 [2021-05-03 15:12:33,970 INFO L226 Difference]: Without dead ends: 33455 [2021-05-03 15:12:33,971 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 30.1ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-05-03 15:12:34,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33455 states. [2021-05-03 15:12:34,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33455 to 16657. [2021-05-03 15:12:34,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16657 states, 16656 states have (on average 4.000540345821325) internal successors, (66633), 16656 states have internal predecessors, (66633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:34,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16657 states to 16657 states and 66633 transitions. [2021-05-03 15:12:34,992 INFO L78 Accepts]: Start accepts. Automaton has 16657 states and 66633 transitions. Word has length 39 [2021-05-03 15:12:34,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:12:34,992 INFO L480 AbstractCegarLoop]: Abstraction has 16657 states and 66633 transitions. [2021-05-03 15:12:34,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:34,993 INFO L276 IsEmpty]: Start isEmpty. Operand 16657 states and 66633 transitions. [2021-05-03 15:12:35,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:12:35,045 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:12:35,045 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] [2021-05-03 15:12:35,046 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-03 15:12:35,046 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:12:35,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:12:35,047 INFO L82 PathProgramCache]: Analyzing trace with hash -696461990, now seen corresponding path program 4 times [2021-05-03 15:12:35,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:12:35,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664091535] [2021-05-03 15:12:35,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:12:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:12:35,124 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 15:12:35,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664091535] [2021-05-03 15:12:35,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:12:35,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-03 15:12:35,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205987984] [2021-05-03 15:12:35,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-03 15:12:35,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:12:35,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-03 15:12:35,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-05-03 15:12:35,127 INFO L87 Difference]: Start difference. First operand 16657 states and 66633 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:35,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:12:35,688 INFO L93 Difference]: Finished difference Result 35904 states and 141978 transitions. [2021-05-03 15:12:35,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-03 15:12:35,689 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:12:35,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:12:35,825 INFO L225 Difference]: With dead ends: 35904 [2021-05-03 15:12:35,826 INFO L226 Difference]: Without dead ends: 35904 [2021-05-03 15:12:35,826 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 30.6ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-05-03 15:12:35,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35904 states. [2021-05-03 15:12:36,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35904 to 18510. [2021-05-03 15:12:36,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18510 states, 18509 states have (on average 3.9846020854719324) internal successors, (73751), 18509 states have internal predecessors, (73751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:36,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18510 states to 18510 states and 73751 transitions. [2021-05-03 15:12:36,915 INFO L78 Accepts]: Start accepts. Automaton has 18510 states and 73751 transitions. Word has length 39 [2021-05-03 15:12:36,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:12:36,916 INFO L480 AbstractCegarLoop]: Abstraction has 18510 states and 73751 transitions. [2021-05-03 15:12:36,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:36,916 INFO L276 IsEmpty]: Start isEmpty. Operand 18510 states and 73751 transitions. [2021-05-03 15:12:36,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:12:36,976 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:12:36,977 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] [2021-05-03 15:12:36,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-03 15:12:36,977 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:12:36,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:12:36,978 INFO L82 PathProgramCache]: Analyzing trace with hash 2051249156, now seen corresponding path program 5 times [2021-05-03 15:12:36,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:12:36,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48055937] [2021-05-03 15:12:36,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:12:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:12:37,077 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 15:12:37,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48055937] [2021-05-03 15:12:37,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:12:37,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 15:12:37,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107237268] [2021-05-03 15:12:37,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 15:12:37,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:12:37,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 15:12:37,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-05-03 15:12:37,083 INFO L87 Difference]: Start difference. First operand 18510 states and 73751 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:37,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:12:37,717 INFO L93 Difference]: Finished difference Result 31750 states and 125094 transitions. [2021-05-03 15:12:37,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-03 15:12:37,718 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:12:37,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:12:37,843 INFO L225 Difference]: With dead ends: 31750 [2021-05-03 15:12:37,844 INFO L226 Difference]: Without dead ends: 31744 [2021-05-03 15:12:37,844 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 33.3ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-05-03 15:12:37,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31744 states. [2021-05-03 15:12:38,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31744 to 18770. [2021-05-03 15:12:38,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18770 states, 18769 states have (on average 3.9722414619851882) internal successors, (74555), 18769 states have internal predecessors, (74555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:38,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18770 states to 18770 states and 74555 transitions. [2021-05-03 15:12:38,988 INFO L78 Accepts]: Start accepts. Automaton has 18770 states and 74555 transitions. Word has length 39 [2021-05-03 15:12:38,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:12:38,988 INFO L480 AbstractCegarLoop]: Abstraction has 18770 states and 74555 transitions. [2021-05-03 15:12:38,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:38,988 INFO L276 IsEmpty]: Start isEmpty. Operand 18770 states and 74555 transitions. [2021-05-03 15:12:39,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:12:39,036 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:12:39,036 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] [2021-05-03 15:12:39,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-03 15:12:39,036 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:12:39,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:12:39,037 INFO L82 PathProgramCache]: Analyzing trace with hash -456932626, now seen corresponding path program 6 times [2021-05-03 15:12:39,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:12:39,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172819428] [2021-05-03 15:12:39,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:12:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:12:39,089 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 15:12:39,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172819428] [2021-05-03 15:12:39,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:12:39,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-03 15:12:39,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913615868] [2021-05-03 15:12:39,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-03 15:12:39,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:12:39,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-03 15:12:39,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-05-03 15:12:39,091 INFO L87 Difference]: Start difference. First operand 18770 states and 74555 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:39,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:12:39,448 INFO L93 Difference]: Finished difference Result 36650 states and 143630 transitions. [2021-05-03 15:12:39,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-03 15:12:39,448 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:12:39,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:12:39,550 INFO L225 Difference]: With dead ends: 36650 [2021-05-03 15:12:39,550 INFO L226 Difference]: Without dead ends: 36632 [2021-05-03 15:12:39,550 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 29.8ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-05-03 15:12:39,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36632 states. [2021-05-03 15:12:40,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36632 to 19412. [2021-05-03 15:12:40,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19412 states, 19411 states have (on average 3.9391066920818094) internal successors, (76462), 19411 states have internal predecessors, (76462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:40,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19412 states to 19412 states and 76462 transitions. [2021-05-03 15:12:40,380 INFO L78 Accepts]: Start accepts. Automaton has 19412 states and 76462 transitions. Word has length 39 [2021-05-03 15:12:40,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:12:40,380 INFO L480 AbstractCegarLoop]: Abstraction has 19412 states and 76462 transitions. [2021-05-03 15:12:40,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:40,381 INFO L276 IsEmpty]: Start isEmpty. Operand 19412 states and 76462 transitions. [2021-05-03 15:12:40,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:12:40,426 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:12:40,426 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] [2021-05-03 15:12:40,426 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-03 15:12:40,427 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:12:40,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:12:40,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1928888210, now seen corresponding path program 7 times [2021-05-03 15:12:40,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:12:40,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895926130] [2021-05-03 15:12:40,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:12:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:12:40,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 15:12:40,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895926130] [2021-05-03 15:12:40,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:12:40,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-03 15:12:40,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394927340] [2021-05-03 15:12:40,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-03 15:12:40,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:12:40,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-03 15:12:40,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-05-03 15:12:40,464 INFO L87 Difference]: Start difference. First operand 19412 states and 76462 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:40,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:12:40,744 INFO L93 Difference]: Finished difference Result 35951 states and 140019 transitions. [2021-05-03 15:12:40,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-03 15:12:40,745 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:12:40,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:12:40,855 INFO L225 Difference]: With dead ends: 35951 [2021-05-03 15:12:40,855 INFO L226 Difference]: Without dead ends: 35939 [2021-05-03 15:12:40,855 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 26.5ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-05-03 15:12:41,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35939 states. [2021-05-03 15:12:41,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35939 to 21351. [2021-05-03 15:12:41,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21351 states, 21350 states have (on average 3.9075878220140514) internal successors, (83427), 21350 states have internal predecessors, (83427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:41,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21351 states to 21351 states and 83427 transitions. [2021-05-03 15:12:41,812 INFO L78 Accepts]: Start accepts. Automaton has 21351 states and 83427 transitions. Word has length 39 [2021-05-03 15:12:41,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:12:41,813 INFO L480 AbstractCegarLoop]: Abstraction has 21351 states and 83427 transitions. [2021-05-03 15:12:41,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:41,813 INFO L276 IsEmpty]: Start isEmpty. Operand 21351 states and 83427 transitions. [2021-05-03 15:12:41,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:12:41,853 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:12:41,853 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] [2021-05-03 15:12:41,854 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-03 15:12:41,854 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:12:41,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:12:41,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1773619328, now seen corresponding path program 8 times [2021-05-03 15:12:41,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:12:41,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064705103] [2021-05-03 15:12:41,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:12:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:12:41,895 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 15:12:41,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064705103] [2021-05-03 15:12:41,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:12:41,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-03 15:12:41,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431434838] [2021-05-03 15:12:41,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-03 15:12:41,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:12:41,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-03 15:12:41,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-05-03 15:12:41,897 INFO L87 Difference]: Start difference. First operand 21351 states and 83427 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:42,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:12:42,412 INFO L93 Difference]: Finished difference Result 35903 states and 138617 transitions. [2021-05-03 15:12:42,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-03 15:12:42,413 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:12:42,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:12:42,521 INFO L225 Difference]: With dead ends: 35903 [2021-05-03 15:12:42,521 INFO L226 Difference]: Without dead ends: 35873 [2021-05-03 15:12:42,521 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 24.4ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-05-03 15:12:42,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35873 states. [2021-05-03 15:12:43,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35873 to 21689. [2021-05-03 15:12:43,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21689 states, 21688 states have (on average 3.866008852821837) internal successors, (83846), 21688 states have internal predecessors, (83846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:43,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21689 states to 21689 states and 83846 transitions. [2021-05-03 15:12:43,277 INFO L78 Accepts]: Start accepts. Automaton has 21689 states and 83846 transitions. Word has length 39 [2021-05-03 15:12:43,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:12:43,278 INFO L480 AbstractCegarLoop]: Abstraction has 21689 states and 83846 transitions. [2021-05-03 15:12:43,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:43,278 INFO L276 IsEmpty]: Start isEmpty. Operand 21689 states and 83846 transitions. [2021-05-03 15:12:43,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:12:43,324 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:12:43,324 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] [2021-05-03 15:12:43,325 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-03 15:12:43,325 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:12:43,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:12:43,325 INFO L82 PathProgramCache]: Analyzing trace with hash 785627998, now seen corresponding path program 9 times [2021-05-03 15:12:43,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:12:43,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699923766] [2021-05-03 15:12:43,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:12:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:12:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 15:12:43,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699923766] [2021-05-03 15:12:43,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:12:43,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-03 15:12:43,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280658988] [2021-05-03 15:12:43,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-03 15:12:43,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:12:43,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-03 15:12:43,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-03 15:12:43,359 INFO L87 Difference]: Start difference. First operand 21689 states and 83846 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:43,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:12:43,737 INFO L93 Difference]: Finished difference Result 21647 states and 83363 transitions. [2021-05-03 15:12:43,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-03 15:12:43,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:12:43,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:12:43,797 INFO L225 Difference]: With dead ends: 21647 [2021-05-03 15:12:43,797 INFO L226 Difference]: Without dead ends: 21605 [2021-05-03 15:12:43,797 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-03 15:12:43,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21605 states. [2021-05-03 15:12:44,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21605 to 21403. [2021-05-03 15:12:44,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21403 states, 21402 states have (on average 3.863470703672554) internal successors, (82686), 21402 states have internal predecessors, (82686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:44,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21403 states to 21403 states and 82686 transitions. [2021-05-03 15:12:44,295 INFO L78 Accepts]: Start accepts. Automaton has 21403 states and 82686 transitions. Word has length 39 [2021-05-03 15:12:44,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:12:44,296 INFO L480 AbstractCegarLoop]: Abstraction has 21403 states and 82686 transitions. [2021-05-03 15:12:44,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:44,296 INFO L276 IsEmpty]: Start isEmpty. Operand 21403 states and 82686 transitions. [2021-05-03 15:12:44,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:12:44,338 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:12:44,338 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] [2021-05-03 15:12:44,338 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-03 15:12:44,338 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:12:44,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:12:44,339 INFO L82 PathProgramCache]: Analyzing trace with hash 795653918, now seen corresponding path program 10 times [2021-05-03 15:12:44,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:12:44,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585941346] [2021-05-03 15:12:44,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:12:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:12:44,368 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 15:12:44,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585941346] [2021-05-03 15:12:44,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:12:44,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-03 15:12:44,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411065514] [2021-05-03 15:12:44,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-03 15:12:44,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:12:44,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-03 15:12:44,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-03 15:12:44,370 INFO L87 Difference]: Start difference. First operand 21403 states and 82686 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:44,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:12:44,552 INFO L93 Difference]: Finished difference Result 21227 states and 81806 transitions. [2021-05-03 15:12:44,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-03 15:12:44,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:12:44,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:12:44,804 INFO L225 Difference]: With dead ends: 21227 [2021-05-03 15:12:44,805 INFO L226 Difference]: Without dead ends: 21203 [2021-05-03 15:12:44,805 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.9ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-03 15:12:44,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21203 states. [2021-05-03 15:12:45,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21203 to 21050. [2021-05-03 15:12:45,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21050 states, 21049 states have (on average 3.8641740700270795) internal successors, (81337), 21049 states have internal predecessors, (81337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:45,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21050 states to 21050 states and 81337 transitions. [2021-05-03 15:12:45,277 INFO L78 Accepts]: Start accepts. Automaton has 21050 states and 81337 transitions. Word has length 39 [2021-05-03 15:12:45,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:12:45,278 INFO L480 AbstractCegarLoop]: Abstraction has 21050 states and 81337 transitions. [2021-05-03 15:12:45,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:45,278 INFO L276 IsEmpty]: Start isEmpty. Operand 21050 states and 81337 transitions. [2021-05-03 15:12:45,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:12:45,318 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:12:45,318 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] [2021-05-03 15:12:45,319 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-03 15:12:45,319 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:12:45,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:12:45,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1630683528, now seen corresponding path program 11 times [2021-05-03 15:12:45,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:12:45,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871317514] [2021-05-03 15:12:45,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:12:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:12:45,406 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 15:12:45,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871317514] [2021-05-03 15:12:45,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:12:45,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 15:12:45,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814385724] [2021-05-03 15:12:45,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 15:12:45,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:12:45,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 15:12:45,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-05-03 15:12:45,414 INFO L87 Difference]: Start difference. First operand 21050 states and 81337 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:45,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:12:45,859 INFO L93 Difference]: Finished difference Result 41364 states and 158003 transitions. [2021-05-03 15:12:45,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 15:12:45,860 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:12:45,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:12:46,269 INFO L225 Difference]: With dead ends: 41364 [2021-05-03 15:12:46,270 INFO L226 Difference]: Without dead ends: 41364 [2021-05-03 15:12:46,270 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 61.3ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-05-03 15:12:46,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41364 states. [2021-05-03 15:12:46,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41364 to 24666. [2021-05-03 15:12:46,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24666 states, 24665 states have (on average 3.801054125278735) internal successors, (93753), 24665 states have internal predecessors, (93753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:47,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24666 states to 24666 states and 93753 transitions. [2021-05-03 15:12:47,003 INFO L78 Accepts]: Start accepts. Automaton has 24666 states and 93753 transitions. Word has length 39 [2021-05-03 15:12:47,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:12:47,005 INFO L480 AbstractCegarLoop]: Abstraction has 24666 states and 93753 transitions. [2021-05-03 15:12:47,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:47,005 INFO L276 IsEmpty]: Start isEmpty. Operand 24666 states and 93753 transitions. [2021-05-03 15:12:47,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:12:47,071 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:12:47,072 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] [2021-05-03 15:12:47,072 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-03 15:12:47,072 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:12:47,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:12:47,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1481740522, now seen corresponding path program 12 times [2021-05-03 15:12:47,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:12:47,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557098209] [2021-05-03 15:12:47,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:12:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:12:47,105 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 15:12:47,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557098209] [2021-05-03 15:12:47,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:12:47,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-03 15:12:47,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107196781] [2021-05-03 15:12:47,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-03 15:12:47,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:12:47,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-03 15:12:47,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-03 15:12:47,107 INFO L87 Difference]: Start difference. First operand 24666 states and 93753 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:47,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:12:47,553 INFO L93 Difference]: Finished difference Result 24060 states and 91079 transitions. [2021-05-03 15:12:47,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-03 15:12:47,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:12:47,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:12:47,622 INFO L225 Difference]: With dead ends: 24060 [2021-05-03 15:12:47,622 INFO L226 Difference]: Without dead ends: 23997 [2021-05-03 15:12:47,622 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-03 15:12:47,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23997 states. [2021-05-03 15:12:48,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23997 to 23727. [2021-05-03 15:12:48,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23727 states, 23726 states have (on average 3.8022844137233416) internal successors, (90213), 23726 states have internal predecessors, (90213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:48,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23727 states to 23727 states and 90213 transitions. [2021-05-03 15:12:48,247 INFO L78 Accepts]: Start accepts. Automaton has 23727 states and 90213 transitions. Word has length 39 [2021-05-03 15:12:48,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:12:48,247 INFO L480 AbstractCegarLoop]: Abstraction has 23727 states and 90213 transitions. [2021-05-03 15:12:48,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:48,247 INFO L276 IsEmpty]: Start isEmpty. Operand 23727 states and 90213 transitions. [2021-05-03 15:12:48,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:12:48,305 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:12:48,305 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] [2021-05-03 15:12:48,305 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-03 15:12:48,306 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:12:48,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:12:48,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1323199580, now seen corresponding path program 13 times [2021-05-03 15:12:48,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:12:48,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100531141] [2021-05-03 15:12:48,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:12:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:12:48,348 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 15:12:48,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100531141] [2021-05-03 15:12:48,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:12:48,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-03 15:12:48,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674522734] [2021-05-03 15:12:48,349 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-03 15:12:48,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:12:48,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-03 15:12:48,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-03 15:12:48,350 INFO L87 Difference]: Start difference. First operand 23727 states and 90213 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:48,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:12:48,886 INFO L93 Difference]: Finished difference Result 39912 states and 151078 transitions. [2021-05-03 15:12:48,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-03 15:12:48,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:12:48,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:12:49,019 INFO L225 Difference]: With dead ends: 39912 [2021-05-03 15:12:49,019 INFO L226 Difference]: Without dead ends: 39864 [2021-05-03 15:12:49,019 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 22.3ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-05-03 15:12:49,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39864 states. [2021-05-03 15:12:49,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39864 to 24281. [2021-05-03 15:12:49,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24281 states, 24280 states have (on average 3.7902388797364086) internal successors, (92027), 24280 states have internal predecessors, (92027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:49,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24281 states to 24281 states and 92027 transitions. [2021-05-03 15:12:49,662 INFO L78 Accepts]: Start accepts. Automaton has 24281 states and 92027 transitions. Word has length 39 [2021-05-03 15:12:49,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:12:49,662 INFO L480 AbstractCegarLoop]: Abstraction has 24281 states and 92027 transitions. [2021-05-03 15:12:49,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:49,662 INFO L276 IsEmpty]: Start isEmpty. Operand 24281 states and 92027 transitions. [2021-05-03 15:12:49,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:12:49,708 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:12:49,708 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] [2021-05-03 15:12:49,708 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-03 15:12:49,708 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:12:49,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:12:49,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1923174852, now seen corresponding path program 14 times [2021-05-03 15:12:49,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:12:49,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230923528] [2021-05-03 15:12:49,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:12:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:12:49,770 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 15:12:49,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230923528] [2021-05-03 15:12:49,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:12:49,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-03 15:12:49,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321512873] [2021-05-03 15:12:49,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-03 15:12:49,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:12:49,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-03 15:12:49,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-03 15:12:49,772 INFO L87 Difference]: Start difference. First operand 24281 states and 92027 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:50,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:12:50,258 INFO L93 Difference]: Finished difference Result 32456 states and 120014 transitions. [2021-05-03 15:12:50,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-03 15:12:50,259 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:12:50,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:12:50,346 INFO L225 Difference]: With dead ends: 32456 [2021-05-03 15:12:50,346 INFO L226 Difference]: Without dead ends: 32320 [2021-05-03 15:12:50,346 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 19.2ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-05-03 15:12:50,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32320 states. [2021-05-03 15:12:50,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32320 to 20818. [2021-05-03 15:12:50,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20818 states, 20817 states have (on average 3.6923668155834175) internal successors, (76864), 20817 states have internal predecessors, (76864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:50,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20818 states to 20818 states and 76864 transitions. [2021-05-03 15:12:50,860 INFO L78 Accepts]: Start accepts. Automaton has 20818 states and 76864 transitions. Word has length 39 [2021-05-03 15:12:50,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:12:50,860 INFO L480 AbstractCegarLoop]: Abstraction has 20818 states and 76864 transitions. [2021-05-03 15:12:50,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:50,861 INFO L276 IsEmpty]: Start isEmpty. Operand 20818 states and 76864 transitions. [2021-05-03 15:12:50,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:12:50,901 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:12:50,901 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] [2021-05-03 15:12:50,901 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-03 15:12:50,901 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:12:50,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:12:50,902 INFO L82 PathProgramCache]: Analyzing trace with hash -62454086, now seen corresponding path program 15 times [2021-05-03 15:12:50,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:12:50,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414765509] [2021-05-03 15:12:50,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:12:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:12:50,964 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 15:12:50,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414765509] [2021-05-03 15:12:50,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:12:50,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-03 15:12:50,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032657670] [2021-05-03 15:12:50,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-03 15:12:50,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:12:50,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-03 15:12:50,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-05-03 15:12:50,966 INFO L87 Difference]: Start difference. First operand 20818 states and 76864 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:51,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:12:51,226 INFO L93 Difference]: Finished difference Result 36117 states and 131263 transitions. [2021-05-03 15:12:51,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-03 15:12:51,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:12:51,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:12:51,565 INFO L225 Difference]: With dead ends: 36117 [2021-05-03 15:12:51,566 INFO L226 Difference]: Without dead ends: 35877 [2021-05-03 15:12:51,566 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 39.0ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-05-03 15:12:51,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35877 states. [2021-05-03 15:12:52,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35877 to 21634. [2021-05-03 15:12:52,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21634 states, 21633 states have (on average 3.6624139046826607) internal successors, (79229), 21633 states have internal predecessors, (79229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:52,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21634 states to 21634 states and 79229 transitions. [2021-05-03 15:12:52,124 INFO L78 Accepts]: Start accepts. Automaton has 21634 states and 79229 transitions. Word has length 39 [2021-05-03 15:12:52,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:12:52,124 INFO L480 AbstractCegarLoop]: Abstraction has 21634 states and 79229 transitions. [2021-05-03 15:12:52,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:52,125 INFO L276 IsEmpty]: Start isEmpty. Operand 21634 states and 79229 transitions. [2021-05-03 15:12:52,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:12:52,165 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:12:52,165 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] [2021-05-03 15:12:52,165 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-03 15:12:52,165 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:12:52,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:12:52,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1604655972, now seen corresponding path program 16 times [2021-05-03 15:12:52,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:12:52,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504354148] [2021-05-03 15:12:52,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:12:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:12:52,219 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 15:12:52,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504354148] [2021-05-03 15:12:52,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:12:52,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 15:12:52,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417055093] [2021-05-03 15:12:52,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 15:12:52,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:12:52,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 15:12:52,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-05-03 15:12:52,221 INFO L87 Difference]: Start difference. First operand 21634 states and 79229 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:52,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:12:52,606 INFO L93 Difference]: Finished difference Result 38178 states and 137087 transitions. [2021-05-03 15:12:52,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 15:12:52,607 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:12:52,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:12:52,997 INFO L225 Difference]: With dead ends: 38178 [2021-05-03 15:12:52,997 INFO L226 Difference]: Without dead ends: 37920 [2021-05-03 15:12:52,998 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 45.9ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-05-03 15:12:53,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37920 states. [2021-05-03 15:12:53,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37920 to 22991. [2021-05-03 15:12:53,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22991 states, 22990 states have (on average 3.6151805132666377) internal successors, (83113), 22990 states have internal predecessors, (83113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:53,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22991 states to 22991 states and 83113 transitions. [2021-05-03 15:12:53,684 INFO L78 Accepts]: Start accepts. Automaton has 22991 states and 83113 transitions. Word has length 39 [2021-05-03 15:12:53,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:12:53,684 INFO L480 AbstractCegarLoop]: Abstraction has 22991 states and 83113 transitions. [2021-05-03 15:12:53,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:53,684 INFO L276 IsEmpty]: Start isEmpty. Operand 22991 states and 83113 transitions. [2021-05-03 15:12:53,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:12:53,720 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:12:53,720 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] [2021-05-03 15:12:53,720 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-03 15:12:53,720 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:12:53,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:12:53,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1808174234, now seen corresponding path program 17 times [2021-05-03 15:12:53,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:12:53,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724462684] [2021-05-03 15:12:53,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:12:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:12:53,763 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 15:12:53,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724462684] [2021-05-03 15:12:53,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:12:53,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-03 15:12:53,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755629136] [2021-05-03 15:12:53,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-03 15:12:53,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:12:53,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-03 15:12:53,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-05-03 15:12:53,764 INFO L87 Difference]: Start difference. First operand 22991 states and 83113 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:54,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:12:54,064 INFO L93 Difference]: Finished difference Result 37550 states and 133913 transitions. [2021-05-03 15:12:54,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-03 15:12:54,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:12:54,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:12:54,176 INFO L225 Difference]: With dead ends: 37550 [2021-05-03 15:12:54,177 INFO L226 Difference]: Without dead ends: 37350 [2021-05-03 15:12:54,177 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 29.2ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-05-03 15:12:54,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37350 states. [2021-05-03 15:12:54,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37350 to 22436. [2021-05-03 15:12:54,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22436 states, 22435 states have (on average 3.5778916870960553) internal successors, (80270), 22435 states have internal predecessors, (80270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:55,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22436 states to 22436 states and 80270 transitions. [2021-05-03 15:12:55,062 INFO L78 Accepts]: Start accepts. Automaton has 22436 states and 80270 transitions. Word has length 39 [2021-05-03 15:12:55,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:12:55,062 INFO L480 AbstractCegarLoop]: Abstraction has 22436 states and 80270 transitions. [2021-05-03 15:12:55,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:55,062 INFO L276 IsEmpty]: Start isEmpty. Operand 22436 states and 80270 transitions. [2021-05-03 15:12:55,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:12:55,109 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:12:55,109 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] [2021-05-03 15:12:55,109 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-03 15:12:55,109 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:12:55,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:12:55,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1070739068, now seen corresponding path program 18 times [2021-05-03 15:12:55,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:12:55,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586073109] [2021-05-03 15:12:55,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:12:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:12:55,179 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 15:12:55,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586073109] [2021-05-03 15:12:55,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:12:55,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 15:12:55,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899919050] [2021-05-03 15:12:55,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 15:12:55,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:12:55,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 15:12:55,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-05-03 15:12:55,181 INFO L87 Difference]: Start difference. First operand 22436 states and 80270 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:55,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:12:55,515 INFO L93 Difference]: Finished difference Result 35683 states and 123807 transitions. [2021-05-03 15:12:55,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 15:12:55,516 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:12:55,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:12:55,606 INFO L225 Difference]: With dead ends: 35683 [2021-05-03 15:12:55,606 INFO L226 Difference]: Without dead ends: 35127 [2021-05-03 15:12:55,606 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 63.0ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-05-03 15:12:55,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35127 states. [2021-05-03 15:12:56,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35127 to 21141. [2021-05-03 15:12:56,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21141 states, 21140 states have (on average 3.479091769157994) internal successors, (73548), 21140 states have internal predecessors, (73548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:56,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21141 states to 21141 states and 73548 transitions. [2021-05-03 15:12:56,431 INFO L78 Accepts]: Start accepts. Automaton has 21141 states and 73548 transitions. Word has length 39 [2021-05-03 15:12:56,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:12:56,432 INFO L480 AbstractCegarLoop]: Abstraction has 21141 states and 73548 transitions. [2021-05-03 15:12:56,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:56,432 INFO L276 IsEmpty]: Start isEmpty. Operand 21141 states and 73548 transitions. [2021-05-03 15:12:56,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:12:56,470 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:12:56,470 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] [2021-05-03 15:12:56,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-03 15:12:56,470 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:12:56,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:12:56,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1489406878, now seen corresponding path program 19 times [2021-05-03 15:12:56,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:12:56,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098347255] [2021-05-03 15:12:56,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:12:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:12:56,575 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 15:12:56,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098347255] [2021-05-03 15:12:56,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:12:56,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-03 15:12:56,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738671018] [2021-05-03 15:12:56,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-03 15:12:56,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:12:56,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-03 15:12:56,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-03 15:12:56,577 INFO L87 Difference]: Start difference. First operand 21141 states and 73548 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:56,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:12:56,799 INFO L93 Difference]: Finished difference Result 34526 states and 119373 transitions. [2021-05-03 15:12:56,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-03 15:12:56,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:12:56,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:12:56,892 INFO L225 Difference]: With dead ends: 34526 [2021-05-03 15:12:56,892 INFO L226 Difference]: Without dead ends: 34342 [2021-05-03 15:12:56,892 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 62.7ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-05-03 15:12:56,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34342 states. [2021-05-03 15:12:57,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34342 to 20667. [2021-05-03 15:12:57,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20667 states, 20666 states have (on average 3.459498693506242) internal successors, (71494), 20666 states have internal predecessors, (71494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:57,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20667 states to 20667 states and 71494 transitions. [2021-05-03 15:12:57,763 INFO L78 Accepts]: Start accepts. Automaton has 20667 states and 71494 transitions. Word has length 39 [2021-05-03 15:12:57,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:12:57,763 INFO L480 AbstractCegarLoop]: Abstraction has 20667 states and 71494 transitions. [2021-05-03 15:12:57,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:57,763 INFO L276 IsEmpty]: Start isEmpty. Operand 20667 states and 71494 transitions. [2021-05-03 15:12:57,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:12:57,800 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:12:57,800 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] [2021-05-03 15:12:57,800 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-05-03 15:12:57,800 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:12:57,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:12:57,800 INFO L82 PathProgramCache]: Analyzing trace with hash 921984860, now seen corresponding path program 20 times [2021-05-03 15:12:57,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:12:57,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423761977] [2021-05-03 15:12:57,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:12:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:12:57,873 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 15:12:57,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423761977] [2021-05-03 15:12:57,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:12:57,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 15:12:57,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929129456] [2021-05-03 15:12:57,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 15:12:57,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:12:57,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 15:12:57,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-05-03 15:12:57,874 INFO L87 Difference]: Start difference. First operand 20667 states and 71494 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:58,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:12:58,210 INFO L93 Difference]: Finished difference Result 30341 states and 101554 transitions. [2021-05-03 15:12:58,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 15:12:58,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:12:58,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:12:58,284 INFO L225 Difference]: With dead ends: 30341 [2021-05-03 15:12:58,284 INFO L226 Difference]: Without dead ends: 28975 [2021-05-03 15:12:58,284 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 51.3ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-05-03 15:12:58,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28975 states. [2021-05-03 15:12:58,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28975 to 18475. [2021-05-03 15:12:58,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18475 states, 18474 states have (on average 3.362725993287864) internal successors, (62123), 18474 states have internal predecessors, (62123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:59,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18475 states to 18475 states and 62123 transitions. [2021-05-03 15:12:59,052 INFO L78 Accepts]: Start accepts. Automaton has 18475 states and 62123 transitions. Word has length 39 [2021-05-03 15:12:59,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:12:59,052 INFO L480 AbstractCegarLoop]: Abstraction has 18475 states and 62123 transitions. [2021-05-03 15:12:59,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:59,053 INFO L276 IsEmpty]: Start isEmpty. Operand 18475 states and 62123 transitions. [2021-05-03 15:12:59,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:12:59,091 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:12:59,091 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] [2021-05-03 15:12:59,091 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-05-03 15:12:59,091 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:12:59,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:12:59,091 INFO L82 PathProgramCache]: Analyzing trace with hash -2140176006, now seen corresponding path program 21 times [2021-05-03 15:12:59,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:12:59,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009496469] [2021-05-03 15:12:59,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:12:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:12:59,164 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 15:12:59,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009496469] [2021-05-03 15:12:59,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:12:59,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 15:12:59,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660464210] [2021-05-03 15:12:59,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 15:12:59,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:12:59,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 15:12:59,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-05-03 15:12:59,166 INFO L87 Difference]: Start difference. First operand 18475 states and 62123 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:12:59,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:12:59,529 INFO L93 Difference]: Finished difference Result 28267 states and 94087 transitions. [2021-05-03 15:12:59,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 15:12:59,529 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:12:59,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:12:59,600 INFO L225 Difference]: With dead ends: 28267 [2021-05-03 15:12:59,600 INFO L226 Difference]: Without dead ends: 28159 [2021-05-03 15:12:59,600 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 58.4ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-05-03 15:12:59,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28159 states. [2021-05-03 15:13:00,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28159 to 18449. [2021-05-03 15:13:00,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18449 states, 18448 states have (on average 3.357328707718994) internal successors, (61936), 18448 states have internal predecessors, (61936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:00,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18449 states to 18449 states and 61936 transitions. [2021-05-03 15:13:00,118 INFO L78 Accepts]: Start accepts. Automaton has 18449 states and 61936 transitions. Word has length 39 [2021-05-03 15:13:00,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:00,118 INFO L480 AbstractCegarLoop]: Abstraction has 18449 states and 61936 transitions. [2021-05-03 15:13:00,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:00,119 INFO L276 IsEmpty]: Start isEmpty. Operand 18449 states and 61936 transitions. [2021-05-03 15:13:00,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:13:00,153 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:13:00,153 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] [2021-05-03 15:13:00,153 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-05-03 15:13:00,153 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:13:00,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:13:00,154 INFO L82 PathProgramCache]: Analyzing trace with hash -539276934, now seen corresponding path program 22 times [2021-05-03 15:13:00,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:13:00,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147444163] [2021-05-03 15:13:00,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:13:00,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:13:00,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 15:13:00,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147444163] [2021-05-03 15:13:00,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:13:00,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 15:13:00,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213379123] [2021-05-03 15:13:00,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 15:13:00,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:13:00,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 15:13:00,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-03 15:13:00,242 INFO L87 Difference]: Start difference. First operand 18449 states and 61936 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:00,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:13:00,638 INFO L93 Difference]: Finished difference Result 28032 states and 93171 transitions. [2021-05-03 15:13:00,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-03 15:13:00,639 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:13:00,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:13:00,713 INFO L225 Difference]: With dead ends: 28032 [2021-05-03 15:13:00,713 INFO L226 Difference]: Without dead ends: 27672 [2021-05-03 15:13:00,713 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 67.6ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-05-03 15:13:01,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27672 states. [2021-05-03 15:13:01,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27672 to 18187. [2021-05-03 15:13:01,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18187 states, 18186 states have (on average 3.346530298031453) internal successors, (60860), 18186 states have internal predecessors, (60860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:01,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18187 states to 18187 states and 60860 transitions. [2021-05-03 15:13:01,383 INFO L78 Accepts]: Start accepts. Automaton has 18187 states and 60860 transitions. Word has length 39 [2021-05-03 15:13:01,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:01,383 INFO L480 AbstractCegarLoop]: Abstraction has 18187 states and 60860 transitions. [2021-05-03 15:13:01,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:01,383 INFO L276 IsEmpty]: Start isEmpty. Operand 18187 states and 60860 transitions. [2021-05-03 15:13:01,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:13:01,414 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:13:01,414 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] [2021-05-03 15:13:01,414 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-05-03 15:13:01,414 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:13:01,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:13:01,415 INFO L82 PathProgramCache]: Analyzing trace with hash 2076747928, now seen corresponding path program 23 times [2021-05-03 15:13:01,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:13:01,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282546846] [2021-05-03 15:13:01,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:13:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:13:01,497 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 15:13:01,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282546846] [2021-05-03 15:13:01,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:13:01,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-03 15:13:01,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841956634] [2021-05-03 15:13:01,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-03 15:13:01,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:13:01,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-03 15:13:01,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-05-03 15:13:01,499 INFO L87 Difference]: Start difference. First operand 18187 states and 60860 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:01,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:13:01,923 INFO L93 Difference]: Finished difference Result 27773 states and 91779 transitions. [2021-05-03 15:13:01,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-03 15:13:01,924 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:13:01,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:13:01,988 INFO L225 Difference]: With dead ends: 27773 [2021-05-03 15:13:01,988 INFO L226 Difference]: Without dead ends: 27521 [2021-05-03 15:13:01,988 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 88.5ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-05-03 15:13:02,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27521 states. [2021-05-03 15:13:02,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27521 to 18576. [2021-05-03 15:13:02,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18576 states, 18575 states have (on average 3.3176312247644684) internal successors, (61625), 18575 states have internal predecessors, (61625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:02,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18576 states to 18576 states and 61625 transitions. [2021-05-03 15:13:02,594 INFO L78 Accepts]: Start accepts. Automaton has 18576 states and 61625 transitions. Word has length 39 [2021-05-03 15:13:02,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:02,594 INFO L480 AbstractCegarLoop]: Abstraction has 18576 states and 61625 transitions. [2021-05-03 15:13:02,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:02,594 INFO L276 IsEmpty]: Start isEmpty. Operand 18576 states and 61625 transitions. [2021-05-03 15:13:02,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:13:02,627 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:13:02,627 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] [2021-05-03 15:13:02,627 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-05-03 15:13:02,628 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:13:02,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:13:02,628 INFO L82 PathProgramCache]: Analyzing trace with hash 904564570, now seen corresponding path program 24 times [2021-05-03 15:13:02,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:13:02,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3938813] [2021-05-03 15:13:02,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:13:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:13:02,680 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 15:13:02,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3938813] [2021-05-03 15:13:02,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:13:02,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 15:13:02,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80744744] [2021-05-03 15:13:02,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 15:13:02,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:13:02,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 15:13:02,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-05-03 15:13:02,682 INFO L87 Difference]: Start difference. First operand 18576 states and 61625 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:03,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:13:03,019 INFO L93 Difference]: Finished difference Result 28814 states and 94330 transitions. [2021-05-03 15:13:03,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 15:13:03,020 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:13:03,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:13:03,109 INFO L225 Difference]: With dead ends: 28814 [2021-05-03 15:13:03,110 INFO L226 Difference]: Without dead ends: 28630 [2021-05-03 15:13:03,110 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 37.6ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-05-03 15:13:03,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28630 states. [2021-05-03 15:13:03,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28630 to 18552. [2021-05-03 15:13:03,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18552 states, 18551 states have (on average 3.308986038488491) internal successors, (61385), 18551 states have internal predecessors, (61385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:03,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18552 states to 18552 states and 61385 transitions. [2021-05-03 15:13:03,569 INFO L78 Accepts]: Start accepts. Automaton has 18552 states and 61385 transitions. Word has length 39 [2021-05-03 15:13:03,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:03,569 INFO L480 AbstractCegarLoop]: Abstraction has 18552 states and 61385 transitions. [2021-05-03 15:13:03,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:03,570 INFO L276 IsEmpty]: Start isEmpty. Operand 18552 states and 61385 transitions. [2021-05-03 15:13:03,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:13:03,601 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:13:03,601 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] [2021-05-03 15:13:03,601 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-05-03 15:13:03,601 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:13:03,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:13:03,602 INFO L82 PathProgramCache]: Analyzing trace with hash -984736934, now seen corresponding path program 25 times [2021-05-03 15:13:03,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:13:03,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686639227] [2021-05-03 15:13:03,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:13:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:13:03,652 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 15:13:03,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686639227] [2021-05-03 15:13:03,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:13:03,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 15:13:03,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452979687] [2021-05-03 15:13:03,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 15:13:03,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:13:03,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 15:13:03,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-03 15:13:03,653 INFO L87 Difference]: Start difference. First operand 18552 states and 61385 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:04,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:13:04,278 INFO L93 Difference]: Finished difference Result 28644 states and 93689 transitions. [2021-05-03 15:13:04,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-03 15:13:04,278 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:13:04,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:13:04,345 INFO L225 Difference]: With dead ends: 28644 [2021-05-03 15:13:04,345 INFO L226 Difference]: Without dead ends: 27824 [2021-05-03 15:13:04,346 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 51.5ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-05-03 15:13:04,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27824 states. [2021-05-03 15:13:04,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27824 to 17898. [2021-05-03 15:13:04,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17898 states, 17897 states have (on average 3.2920601218081242) internal successors, (58918), 17897 states have internal predecessors, (58918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:04,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17898 states to 17898 states and 58918 transitions. [2021-05-03 15:13:04,770 INFO L78 Accepts]: Start accepts. Automaton has 17898 states and 58918 transitions. Word has length 39 [2021-05-03 15:13:04,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:04,770 INFO L480 AbstractCegarLoop]: Abstraction has 17898 states and 58918 transitions. [2021-05-03 15:13:04,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:04,771 INFO L276 IsEmpty]: Start isEmpty. Operand 17898 states and 58918 transitions. [2021-05-03 15:13:04,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:13:04,801 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:13:04,801 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] [2021-05-03 15:13:04,801 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-05-03 15:13:04,802 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:13:04,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:13:04,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1731722632, now seen corresponding path program 26 times [2021-05-03 15:13:04,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:13:04,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110680618] [2021-05-03 15:13:04,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:13:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:13:04,866 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 15:13:04,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110680618] [2021-05-03 15:13:04,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:13:04,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-03 15:13:04,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146521614] [2021-05-03 15:13:04,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-03 15:13:04,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:13:04,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-03 15:13:04,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-05-03 15:13:04,868 INFO L87 Difference]: Start difference. First operand 17898 states and 58918 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:05,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:13:05,352 INFO L93 Difference]: Finished difference Result 28142 states and 91490 transitions. [2021-05-03 15:13:05,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-03 15:13:05,353 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:13:05,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:13:05,439 INFO L225 Difference]: With dead ends: 28142 [2021-05-03 15:13:05,440 INFO L226 Difference]: Without dead ends: 26796 [2021-05-03 15:13:05,440 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 89.8ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-05-03 15:13:05,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26796 states. [2021-05-03 15:13:06,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26796 to 17614. [2021-05-03 15:13:06,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17614 states, 17613 states have (on average 3.2751376823936864) internal successors, (57685), 17613 states have internal predecessors, (57685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:06,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17614 states to 17614 states and 57685 transitions. [2021-05-03 15:13:06,098 INFO L78 Accepts]: Start accepts. Automaton has 17614 states and 57685 transitions. Word has length 39 [2021-05-03 15:13:06,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:06,098 INFO L480 AbstractCegarLoop]: Abstraction has 17614 states and 57685 transitions. [2021-05-03 15:13:06,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:06,098 INFO L276 IsEmpty]: Start isEmpty. Operand 17614 states and 57685 transitions. [2021-05-03 15:13:06,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:13:06,131 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:13:06,131 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] [2021-05-03 15:13:06,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-05-03 15:13:06,132 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:13:06,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:13:06,132 INFO L82 PathProgramCache]: Analyzing trace with hash -652913060, now seen corresponding path program 27 times [2021-05-03 15:13:06,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:13:06,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765174677] [2021-05-03 15:13:06,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:13:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:13:06,211 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 15:13:06,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765174677] [2021-05-03 15:13:06,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:13:06,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-03 15:13:06,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714571155] [2021-05-03 15:13:06,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-03 15:13:06,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:13:06,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-03 15:13:06,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-05-03 15:13:06,213 INFO L87 Difference]: Start difference. First operand 17614 states and 57685 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:06,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:13:06,660 INFO L93 Difference]: Finished difference Result 27764 states and 89075 transitions. [2021-05-03 15:13:06,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-03 15:13:06,660 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:13:06,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:13:06,728 INFO L225 Difference]: With dead ends: 27764 [2021-05-03 15:13:06,728 INFO L226 Difference]: Without dead ends: 26272 [2021-05-03 15:13:06,729 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 88.2ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-05-03 15:13:06,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26272 states. [2021-05-03 15:13:07,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26272 to 16042. [2021-05-03 15:13:07,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16042 states, 16041 states have (on average 3.2308459572345862) internal successors, (51826), 16041 states have internal predecessors, (51826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:07,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16042 states to 16042 states and 51826 transitions. [2021-05-03 15:13:07,180 INFO L78 Accepts]: Start accepts. Automaton has 16042 states and 51826 transitions. Word has length 39 [2021-05-03 15:13:07,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:07,180 INFO L480 AbstractCegarLoop]: Abstraction has 16042 states and 51826 transitions. [2021-05-03 15:13:07,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:07,180 INFO L276 IsEmpty]: Start isEmpty. Operand 16042 states and 51826 transitions. [2021-05-03 15:13:07,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:13:07,209 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:13:07,209 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] [2021-05-03 15:13:07,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-05-03 15:13:07,209 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:13:07,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:13:07,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1990404212, now seen corresponding path program 28 times [2021-05-03 15:13:07,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:13:07,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582351921] [2021-05-03 15:13:07,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:13:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:13:07,251 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 15:13:07,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582351921] [2021-05-03 15:13:07,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:13:07,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-03 15:13:07,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721859123] [2021-05-03 15:13:07,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-03 15:13:07,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:13:07,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-03 15:13:07,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-03 15:13:07,254 INFO L87 Difference]: Start difference. First operand 16042 states and 51826 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:07,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:13:07,477 INFO L93 Difference]: Finished difference Result 26251 states and 83635 transitions. [2021-05-03 15:13:07,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-03 15:13:07,477 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:13:07,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:13:07,745 INFO L225 Difference]: With dead ends: 26251 [2021-05-03 15:13:07,745 INFO L226 Difference]: Without dead ends: 25907 [2021-05-03 15:13:07,745 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.3ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-05-03 15:13:07,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25907 states. [2021-05-03 15:13:08,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25907 to 15530. [2021-05-03 15:13:08,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15530 states, 15529 states have (on average 3.2065168394616523) internal successors, (49794), 15529 states have internal predecessors, (49794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:08,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15530 states to 15530 states and 49794 transitions. [2021-05-03 15:13:08,112 INFO L78 Accepts]: Start accepts. Automaton has 15530 states and 49794 transitions. Word has length 39 [2021-05-03 15:13:08,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:08,112 INFO L480 AbstractCegarLoop]: Abstraction has 15530 states and 49794 transitions. [2021-05-03 15:13:08,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:08,112 INFO L276 IsEmpty]: Start isEmpty. Operand 15530 states and 49794 transitions. [2021-05-03 15:13:08,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:13:08,139 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:13:08,139 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] [2021-05-03 15:13:08,140 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-05-03 15:13:08,140 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:13:08,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:13:08,140 INFO L82 PathProgramCache]: Analyzing trace with hash -486861366, now seen corresponding path program 29 times [2021-05-03 15:13:08,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:13:08,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495565326] [2021-05-03 15:13:08,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:13:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:13:08,185 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 15:13:08,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495565326] [2021-05-03 15:13:08,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:13:08,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 15:13:08,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235671325] [2021-05-03 15:13:08,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 15:13:08,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:13:08,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 15:13:08,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-05-03 15:13:08,186 INFO L87 Difference]: Start difference. First operand 15530 states and 49794 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:08,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:13:08,471 INFO L93 Difference]: Finished difference Result 19376 states and 57898 transitions. [2021-05-03 15:13:08,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 15:13:08,472 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:13:08,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:13:08,518 INFO L225 Difference]: With dead ends: 19376 [2021-05-03 15:13:08,518 INFO L226 Difference]: Without dead ends: 17805 [2021-05-03 15:13:08,520 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 42.8ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-05-03 15:13:08,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17805 states. [2021-05-03 15:13:08,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17805 to 10863. [2021-05-03 15:13:08,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10863 states, 10862 states have (on average 3.029736696740932) internal successors, (32909), 10862 states have internal predecessors, (32909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:08,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10863 states to 10863 states and 32909 transitions. [2021-05-03 15:13:08,829 INFO L78 Accepts]: Start accepts. Automaton has 10863 states and 32909 transitions. Word has length 39 [2021-05-03 15:13:08,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:08,829 INFO L480 AbstractCegarLoop]: Abstraction has 10863 states and 32909 transitions. [2021-05-03 15:13:08,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:08,830 INFO L276 IsEmpty]: Start isEmpty. Operand 10863 states and 32909 transitions. [2021-05-03 15:13:08,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:13:08,853 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:13:08,853 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] [2021-05-03 15:13:08,853 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-05-03 15:13:08,853 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:13:08,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:13:08,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1712472694, now seen corresponding path program 30 times [2021-05-03 15:13:08,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:13:08,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183957275] [2021-05-03 15:13:08,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:13:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:13:08,907 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 15:13:08,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183957275] [2021-05-03 15:13:08,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:13:08,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 15:13:08,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370736367] [2021-05-03 15:13:08,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 15:13:08,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:13:08,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 15:13:08,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-03 15:13:08,909 INFO L87 Difference]: Start difference. First operand 10863 states and 32909 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:09,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:13:09,219 INFO L93 Difference]: Finished difference Result 16060 states and 47771 transitions. [2021-05-03 15:13:09,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-03 15:13:09,219 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:13:09,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:13:09,257 INFO L225 Difference]: With dead ends: 16060 [2021-05-03 15:13:09,257 INFO L226 Difference]: Without dead ends: 15380 [2021-05-03 15:13:09,258 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-05-03 15:13:09,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15380 states. [2021-05-03 15:13:09,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15380 to 10289. [2021-05-03 15:13:09,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10289 states, 10288 states have (on average 3.010303265940902) internal successors, (30970), 10288 states have internal predecessors, (30970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:09,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10289 states to 10289 states and 30970 transitions. [2021-05-03 15:13:09,620 INFO L78 Accepts]: Start accepts. Automaton has 10289 states and 30970 transitions. Word has length 39 [2021-05-03 15:13:09,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:09,620 INFO L480 AbstractCegarLoop]: Abstraction has 10289 states and 30970 transitions. [2021-05-03 15:13:09,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:09,620 INFO L276 IsEmpty]: Start isEmpty. Operand 10289 states and 30970 transitions. [2021-05-03 15:13:09,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:13:09,640 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:13:09,641 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] [2021-05-03 15:13:09,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-05-03 15:13:09,641 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:13:09,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:13:09,641 INFO L82 PathProgramCache]: Analyzing trace with hash -12539988, now seen corresponding path program 31 times [2021-05-03 15:13:09,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:13:09,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505483802] [2021-05-03 15:13:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:13:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:13:09,718 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 15:13:09,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505483802] [2021-05-03 15:13:09,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:13:09,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-03 15:13:09,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163265560] [2021-05-03 15:13:09,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-03 15:13:09,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:13:09,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-03 15:13:09,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-05-03 15:13:09,720 INFO L87 Difference]: Start difference. First operand 10289 states and 30970 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:10,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:13:10,092 INFO L93 Difference]: Finished difference Result 14404 states and 42007 transitions. [2021-05-03 15:13:10,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-03 15:13:10,092 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:13:10,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:13:10,126 INFO L225 Difference]: With dead ends: 14404 [2021-05-03 15:13:10,127 INFO L226 Difference]: Without dead ends: 13806 [2021-05-03 15:13:10,127 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 78.3ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-05-03 15:13:10,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13806 states. [2021-05-03 15:13:10,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13806 to 9515. [2021-05-03 15:13:10,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9515 states, 9514 states have (on average 2.974248475930208) internal successors, (28297), 9514 states have internal predecessors, (28297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:10,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9515 states to 9515 states and 28297 transitions. [2021-05-03 15:13:10,376 INFO L78 Accepts]: Start accepts. Automaton has 9515 states and 28297 transitions. Word has length 39 [2021-05-03 15:13:10,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:10,376 INFO L480 AbstractCegarLoop]: Abstraction has 9515 states and 28297 transitions. [2021-05-03 15:13:10,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:10,377 INFO L276 IsEmpty]: Start isEmpty. Operand 9515 states and 28297 transitions. [2021-05-03 15:13:10,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:13:10,395 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:13:10,395 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] [2021-05-03 15:13:10,396 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-05-03 15:13:10,396 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:13:10,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:13:10,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1602526426, now seen corresponding path program 32 times [2021-05-03 15:13:10,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:13:10,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337816945] [2021-05-03 15:13:10,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:13:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:13:10,465 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 15:13:10,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337816945] [2021-05-03 15:13:10,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:13:10,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 15:13:10,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204011904] [2021-05-03 15:13:10,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 15:13:10,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:13:10,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 15:13:10,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-05-03 15:13:10,467 INFO L87 Difference]: Start difference. First operand 9515 states and 28297 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:10,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:13:10,794 INFO L93 Difference]: Finished difference Result 14734 states and 43845 transitions. [2021-05-03 15:13:10,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-03 15:13:10,794 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:13:10,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:13:10,822 INFO L225 Difference]: With dead ends: 14734 [2021-05-03 15:13:10,822 INFO L226 Difference]: Without dead ends: 14686 [2021-05-03 15:13:10,823 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 55.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-03 15:13:10,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14686 states. [2021-05-03 15:13:10,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14686 to 9376. [2021-05-03 15:13:10,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9376 states, 9375 states have (on average 2.9634133333333335) internal successors, (27782), 9375 states have internal predecessors, (27782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:11,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9376 states to 9376 states and 27782 transitions. [2021-05-03 15:13:11,017 INFO L78 Accepts]: Start accepts. Automaton has 9376 states and 27782 transitions. Word has length 39 [2021-05-03 15:13:11,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:11,018 INFO L480 AbstractCegarLoop]: Abstraction has 9376 states and 27782 transitions. [2021-05-03 15:13:11,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:11,018 INFO L276 IsEmpty]: Start isEmpty. Operand 9376 states and 27782 transitions. [2021-05-03 15:13:11,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:13:11,032 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:13:11,032 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] [2021-05-03 15:13:11,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-05-03 15:13:11,032 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:13:11,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:13:11,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1091541798, now seen corresponding path program 33 times [2021-05-03 15:13:11,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:13:11,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354649341] [2021-05-03 15:13:11,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:13:11,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:13:11,087 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 15:13:11,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354649341] [2021-05-03 15:13:11,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:13:11,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 15:13:11,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487558056] [2021-05-03 15:13:11,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 15:13:11,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:13:11,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 15:13:11,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-05-03 15:13:11,088 INFO L87 Difference]: Start difference. First operand 9376 states and 27782 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:11,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:13:11,444 INFO L93 Difference]: Finished difference Result 14599 states and 43322 transitions. [2021-05-03 15:13:11,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-03 15:13:11,445 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:13:11,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:13:11,481 INFO L225 Difference]: With dead ends: 14599 [2021-05-03 15:13:11,482 INFO L226 Difference]: Without dead ends: 14479 [2021-05-03 15:13:11,483 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 66.0ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-05-03 15:13:11,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14479 states. [2021-05-03 15:13:11,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14479 to 9268. [2021-05-03 15:13:11,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9268 states, 9267 states have (on average 2.9584547318441783) internal successors, (27416), 9267 states have internal predecessors, (27416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:11,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9268 states to 9268 states and 27416 transitions. [2021-05-03 15:13:11,768 INFO L78 Accepts]: Start accepts. Automaton has 9268 states and 27416 transitions. Word has length 39 [2021-05-03 15:13:11,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:11,769 INFO L480 AbstractCegarLoop]: Abstraction has 9268 states and 27416 transitions. [2021-05-03 15:13:11,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:11,769 INFO L276 IsEmpty]: Start isEmpty. Operand 9268 states and 27416 transitions. [2021-05-03 15:13:11,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:13:11,779 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:13:11,779 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] [2021-05-03 15:13:11,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-05-03 15:13:11,779 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:13:11,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:13:11,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1524483064, now seen corresponding path program 34 times [2021-05-03 15:13:11,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:13:11,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833204039] [2021-05-03 15:13:11,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:13:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:13:11,832 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 15:13:11,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833204039] [2021-05-03 15:13:11,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:13:11,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-03 15:13:11,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585213741] [2021-05-03 15:13:11,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-03 15:13:11,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:13:11,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-03 15:13:11,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-05-03 15:13:11,833 INFO L87 Difference]: Start difference. First operand 9268 states and 27416 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:12,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:13:12,222 INFO L93 Difference]: Finished difference Result 14208 states and 42268 transitions. [2021-05-03 15:13:12,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-03 15:13:12,222 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:13:12,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:13:12,257 INFO L225 Difference]: With dead ends: 14208 [2021-05-03 15:13:12,257 INFO L226 Difference]: Without dead ends: 14016 [2021-05-03 15:13:12,257 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 69.1ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-05-03 15:13:12,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14016 states. [2021-05-03 15:13:12,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14016 to 9164. [2021-05-03 15:13:12,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9164 states, 9163 states have (on average 2.960820691913129) internal successors, (27130), 9163 states have internal predecessors, (27130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:12,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9164 states to 9164 states and 27130 transitions. [2021-05-03 15:13:12,477 INFO L78 Accepts]: Start accepts. Automaton has 9164 states and 27130 transitions. Word has length 39 [2021-05-03 15:13:12,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:12,477 INFO L480 AbstractCegarLoop]: Abstraction has 9164 states and 27130 transitions. [2021-05-03 15:13:12,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:12,477 INFO L276 IsEmpty]: Start isEmpty. Operand 9164 states and 27130 transitions. [2021-05-03 15:13:12,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:13:12,492 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:13:12,492 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] [2021-05-03 15:13:12,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-05-03 15:13:12,492 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:13:12,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:13:12,492 INFO L82 PathProgramCache]: Analyzing trace with hash 121958780, now seen corresponding path program 35 times [2021-05-03 15:13:12,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:13:12,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099036338] [2021-05-03 15:13:12,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:13:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:13:12,559 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 15:13:12,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099036338] [2021-05-03 15:13:12,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:13:12,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-03 15:13:12,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099954680] [2021-05-03 15:13:12,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-03 15:13:12,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:13:12,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-03 15:13:12,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-05-03 15:13:12,560 INFO L87 Difference]: Start difference. First operand 9164 states and 27130 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:12,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:13:12,990 INFO L93 Difference]: Finished difference Result 14134 states and 42012 transitions. [2021-05-03 15:13:12,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-03 15:13:12,991 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:13:12,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:13:13,017 INFO L225 Difference]: With dead ends: 14134 [2021-05-03 15:13:13,017 INFO L226 Difference]: Without dead ends: 13966 [2021-05-03 15:13:13,017 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 121.0ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-05-03 15:13:13,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13966 states. [2021-05-03 15:13:13,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13966 to 9158. [2021-05-03 15:13:13,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9158 states, 9157 states have (on average 2.9588293109096866) internal successors, (27094), 9157 states have internal predecessors, (27094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:13,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9158 states to 9158 states and 27094 transitions. [2021-05-03 15:13:13,204 INFO L78 Accepts]: Start accepts. Automaton has 9158 states and 27094 transitions. Word has length 39 [2021-05-03 15:13:13,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:13,204 INFO L480 AbstractCegarLoop]: Abstraction has 9158 states and 27094 transitions. [2021-05-03 15:13:13,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:13,204 INFO L276 IsEmpty]: Start isEmpty. Operand 9158 states and 27094 transitions. [2021-05-03 15:13:13,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:13:13,217 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:13:13,217 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] [2021-05-03 15:13:13,217 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-05-03 15:13:13,218 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:13:13,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:13:13,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1643590330, now seen corresponding path program 36 times [2021-05-03 15:13:13,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:13:13,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215808887] [2021-05-03 15:13:13,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:13:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:13:13,261 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 15:13:13,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215808887] [2021-05-03 15:13:13,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:13:13,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 15:13:13,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403339038] [2021-05-03 15:13:13,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 15:13:13,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:13:13,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 15:13:13,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-05-03 15:13:13,263 INFO L87 Difference]: Start difference. First operand 9158 states and 27094 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:13,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:13:13,609 INFO L93 Difference]: Finished difference Result 14594 states and 43056 transitions. [2021-05-03 15:13:13,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-03 15:13:13,610 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:13:13,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:13:13,646 INFO L225 Difference]: With dead ends: 14594 [2021-05-03 15:13:13,647 INFO L226 Difference]: Without dead ends: 14466 [2021-05-03 15:13:13,647 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 43.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-03 15:13:13,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14466 states. [2021-05-03 15:13:13,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14466 to 9094. [2021-05-03 15:13:13,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9094 states, 9093 states have (on average 2.9493016606180578) internal successors, (26818), 9093 states have internal predecessors, (26818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:13,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9094 states to 9094 states and 26818 transitions. [2021-05-03 15:13:13,875 INFO L78 Accepts]: Start accepts. Automaton has 9094 states and 26818 transitions. Word has length 39 [2021-05-03 15:13:13,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:13,875 INFO L480 AbstractCegarLoop]: Abstraction has 9094 states and 26818 transitions. [2021-05-03 15:13:13,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:13,875 INFO L276 IsEmpty]: Start isEmpty. Operand 9094 states and 26818 transitions. [2021-05-03 15:13:13,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:13:13,889 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:13:13,889 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] [2021-05-03 15:13:13,889 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-05-03 15:13:13,889 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:13:13,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:13:13,889 INFO L82 PathProgramCache]: Analyzing trace with hash -245711174, now seen corresponding path program 37 times [2021-05-03 15:13:13,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:13:13,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278402303] [2021-05-03 15:13:13,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:13:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:13:13,942 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 15:13:13,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278402303] [2021-05-03 15:13:13,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:13:13,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 15:13:13,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282575987] [2021-05-03 15:13:13,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 15:13:13,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:13:13,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 15:13:13,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-05-03 15:13:13,944 INFO L87 Difference]: Start difference. First operand 9094 states and 26818 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:14,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:13:14,244 INFO L93 Difference]: Finished difference Result 14494 states and 42702 transitions. [2021-05-03 15:13:14,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-03 15:13:14,244 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:13:14,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:13:14,272 INFO L225 Difference]: With dead ends: 14494 [2021-05-03 15:13:14,272 INFO L226 Difference]: Without dead ends: 14022 [2021-05-03 15:13:14,272 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 63.3ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-05-03 15:13:14,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14022 states. [2021-05-03 15:13:14,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14022 to 8890. [2021-05-03 15:13:14,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8890 states, 8889 states have (on average 2.937338283271459) internal successors, (26110), 8889 states have internal predecessors, (26110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:14,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8890 states to 8890 states and 26110 transitions. [2021-05-03 15:13:14,455 INFO L78 Accepts]: Start accepts. Automaton has 8890 states and 26110 transitions. Word has length 39 [2021-05-03 15:13:14,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:14,455 INFO L480 AbstractCegarLoop]: Abstraction has 8890 states and 26110 transitions. [2021-05-03 15:13:14,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:14,455 INFO L276 IsEmpty]: Start isEmpty. Operand 8890 states and 26110 transitions. [2021-05-03 15:13:14,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:13:14,468 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:13:14,468 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] [2021-05-03 15:13:14,468 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-05-03 15:13:14,468 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:13:14,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:13:14,469 INFO L82 PathProgramCache]: Analyzing trace with hash -992696872, now seen corresponding path program 38 times [2021-05-03 15:13:14,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:13:14,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278035247] [2021-05-03 15:13:14,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:13:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:13:14,526 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 15:13:14,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278035247] [2021-05-03 15:13:14,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:13:14,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-03 15:13:14,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998021821] [2021-05-03 15:13:14,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-03 15:13:14,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:13:14,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-03 15:13:14,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-05-03 15:13:14,528 INFO L87 Difference]: Start difference. First operand 8890 states and 26110 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:14,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:13:14,889 INFO L93 Difference]: Finished difference Result 14086 states and 41514 transitions. [2021-05-03 15:13:14,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-03 15:13:14,890 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:13:14,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:13:14,916 INFO L225 Difference]: With dead ends: 14086 [2021-05-03 15:13:14,916 INFO L226 Difference]: Without dead ends: 13386 [2021-05-03 15:13:14,916 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 84.4ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-05-03 15:13:14,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13386 states. [2021-05-03 15:13:15,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13386 to 8674. [2021-05-03 15:13:15,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8674 states, 8673 states have (on average 2.945462930935086) internal successors, (25546), 8673 states have internal predecessors, (25546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:15,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8674 states to 8674 states and 25546 transitions. [2021-05-03 15:13:15,094 INFO L78 Accepts]: Start accepts. Automaton has 8674 states and 25546 transitions. Word has length 39 [2021-05-03 15:13:15,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:15,094 INFO L480 AbstractCegarLoop]: Abstraction has 8674 states and 25546 transitions. [2021-05-03 15:13:15,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:15,094 INFO L276 IsEmpty]: Start isEmpty. Operand 8674 states and 25546 transitions. [2021-05-03 15:13:15,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:13:15,107 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:13:15,107 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] [2021-05-03 15:13:15,107 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-05-03 15:13:15,107 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:13:15,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:13:15,107 INFO L82 PathProgramCache]: Analyzing trace with hash 2135186268, now seen corresponding path program 39 times [2021-05-03 15:13:15,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:13:15,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93350316] [2021-05-03 15:13:15,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:13:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:13:15,169 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 15:13:15,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93350316] [2021-05-03 15:13:15,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:13:15,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-03 15:13:15,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835342392] [2021-05-03 15:13:15,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-03 15:13:15,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:13:15,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-03 15:13:15,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-05-03 15:13:15,170 INFO L87 Difference]: Start difference. First operand 8674 states and 25546 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:15,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:13:15,629 INFO L93 Difference]: Finished difference Result 13828 states and 40806 transitions. [2021-05-03 15:13:15,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-03 15:13:15,630 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:13:15,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:13:15,657 INFO L225 Difference]: With dead ends: 13828 [2021-05-03 15:13:15,658 INFO L226 Difference]: Without dead ends: 13182 [2021-05-03 15:13:15,658 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 127.4ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-05-03 15:13:15,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13182 states. [2021-05-03 15:13:15,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13182 to 8470. [2021-05-03 15:13:15,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8470 states, 8469 states have (on average 2.964694769158106) internal successors, (25108), 8469 states have internal predecessors, (25108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:15,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8470 states to 8470 states and 25108 transitions. [2021-05-03 15:13:15,835 INFO L78 Accepts]: Start accepts. Automaton has 8470 states and 25108 transitions. Word has length 39 [2021-05-03 15:13:15,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:15,835 INFO L480 AbstractCegarLoop]: Abstraction has 8470 states and 25108 transitions. [2021-05-03 15:13:15,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:15,836 INFO L276 IsEmpty]: Start isEmpty. Operand 8470 states and 25108 transitions. [2021-05-03 15:13:15,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:13:15,848 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:13:15,848 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] [2021-05-03 15:13:15,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-05-03 15:13:15,848 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:13:15,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:13:15,848 INFO L82 PathProgramCache]: Analyzing trace with hash -695140544, now seen corresponding path program 40 times [2021-05-03 15:13:15,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:13:15,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187199385] [2021-05-03 15:13:15,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:13:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:13:15,914 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 15:13:15,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187199385] [2021-05-03 15:13:15,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:13:15,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-03 15:13:15,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224645315] [2021-05-03 15:13:15,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-03 15:13:15,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:13:15,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-03 15:13:15,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-05-03 15:13:15,916 INFO L87 Difference]: Start difference. First operand 8470 states and 25108 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:16,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:13:16,399 INFO L93 Difference]: Finished difference Result 13371 states and 39611 transitions. [2021-05-03 15:13:16,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-03 15:13:16,400 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:13:16,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:13:16,426 INFO L225 Difference]: With dead ends: 13371 [2021-05-03 15:13:16,426 INFO L226 Difference]: Without dead ends: 12735 [2021-05-03 15:13:16,427 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 129.7ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-05-03 15:13:16,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12735 states. [2021-05-03 15:13:16,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12735 to 7590. [2021-05-03 15:13:16,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7590 states, 7589 states have (on average 2.960469100013177) internal successors, (22467), 7589 states have internal predecessors, (22467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:16,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7590 states to 7590 states and 22467 transitions. [2021-05-03 15:13:16,588 INFO L78 Accepts]: Start accepts. Automaton has 7590 states and 22467 transitions. Word has length 39 [2021-05-03 15:13:16,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:16,589 INFO L480 AbstractCegarLoop]: Abstraction has 7590 states and 22467 transitions. [2021-05-03 15:13:16,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:16,589 INFO L276 IsEmpty]: Start isEmpty. Operand 7590 states and 22467 transitions. [2021-05-03 15:13:16,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:13:16,600 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:13:16,600 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] [2021-05-03 15:13:16,600 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-05-03 15:13:16,600 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:13:16,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:13:16,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1794340302, now seen corresponding path program 41 times [2021-05-03 15:13:16,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:13:16,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819287586] [2021-05-03 15:13:16,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:13:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:13:16,658 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 15:13:16,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819287586] [2021-05-03 15:13:16,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:13:16,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 15:13:16,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913500339] [2021-05-03 15:13:16,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 15:13:16,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:13:16,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 15:13:16,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-05-03 15:13:16,659 INFO L87 Difference]: Start difference. First operand 7590 states and 22467 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:17,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:13:17,024 INFO L93 Difference]: Finished difference Result 12745 states and 37674 transitions. [2021-05-03 15:13:17,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-03 15:13:17,024 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:13:17,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:13:17,050 INFO L225 Difference]: With dead ends: 12745 [2021-05-03 15:13:17,050 INFO L226 Difference]: Without dead ends: 12601 [2021-05-03 15:13:17,050 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 63.9ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-05-03 15:13:17,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12601 states. [2021-05-03 15:13:17,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12601 to 7346. [2021-05-03 15:13:17,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7346 states, 7345 states have (on average 2.9400953029271615) internal successors, (21595), 7345 states have internal predecessors, (21595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:17,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7346 states to 7346 states and 21595 transitions. [2021-05-03 15:13:17,205 INFO L78 Accepts]: Start accepts. Automaton has 7346 states and 21595 transitions. Word has length 39 [2021-05-03 15:13:17,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:17,205 INFO L480 AbstractCegarLoop]: Abstraction has 7346 states and 21595 transitions. [2021-05-03 15:13:17,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:17,206 INFO L276 IsEmpty]: Start isEmpty. Operand 7346 states and 21595 transitions. [2021-05-03 15:13:17,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:13:17,216 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:13:17,216 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] [2021-05-03 15:13:17,217 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-05-03 15:13:17,217 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:13:17,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:13:17,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1613437490, now seen corresponding path program 42 times [2021-05-03 15:13:17,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:13:17,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423735835] [2021-05-03 15:13:17,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:13:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:13:17,272 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 15:13:17,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423735835] [2021-05-03 15:13:17,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:13:17,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-03 15:13:17,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076946378] [2021-05-03 15:13:17,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-03 15:13:17,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:13:17,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-03 15:13:17,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-05-03 15:13:17,273 INFO L87 Difference]: Start difference. First operand 7346 states and 21595 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:17,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:13:17,609 INFO L93 Difference]: Finished difference Result 11821 states and 34814 transitions. [2021-05-03 15:13:17,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-03 15:13:17,609 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:13:17,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:13:17,630 INFO L225 Difference]: With dead ends: 11821 [2021-05-03 15:13:17,631 INFO L226 Difference]: Without dead ends: 11629 [2021-05-03 15:13:17,631 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 78.0ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-05-03 15:13:17,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11629 states. [2021-05-03 15:13:17,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11629 to 7242. [2021-05-03 15:13:17,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7242 states, 7241 states have (on average 2.9428255765778206) internal successors, (21309), 7241 states have internal predecessors, (21309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:17,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7242 states to 7242 states and 21309 transitions. [2021-05-03 15:13:17,782 INFO L78 Accepts]: Start accepts. Automaton has 7242 states and 21309 transitions. Word has length 39 [2021-05-03 15:13:17,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:17,782 INFO L480 AbstractCegarLoop]: Abstraction has 7242 states and 21309 transitions. [2021-05-03 15:13:17,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:17,782 INFO L276 IsEmpty]: Start isEmpty. Operand 7242 states and 21309 transitions. [2021-05-03 15:13:17,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:13:17,793 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:13:17,793 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] [2021-05-03 15:13:17,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-05-03 15:13:17,793 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:13:17,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:13:17,794 INFO L82 PathProgramCache]: Analyzing trace with hash -798629012, now seen corresponding path program 43 times [2021-05-03 15:13:17,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:13:17,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424833628] [2021-05-03 15:13:17,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:13:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:13:17,860 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 15:13:17,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424833628] [2021-05-03 15:13:17,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:13:17,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-03 15:13:17,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939760902] [2021-05-03 15:13:17,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-03 15:13:17,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:13:17,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-03 15:13:17,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-05-03 15:13:17,862 INFO L87 Difference]: Start difference. First operand 7242 states and 21309 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:18,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:13:18,289 INFO L93 Difference]: Finished difference Result 11315 states and 33296 transitions. [2021-05-03 15:13:18,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-03 15:13:18,290 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:13:18,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:13:18,310 INFO L225 Difference]: With dead ends: 11315 [2021-05-03 15:13:18,311 INFO L226 Difference]: Without dead ends: 11099 [2021-05-03 15:13:18,311 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 111.1ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-05-03 15:13:18,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11099 states. [2021-05-03 15:13:18,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11099 to 7008. [2021-05-03 15:13:18,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7008 states, 7007 states have (on average 2.97445411731126) internal successors, (20842), 7007 states have internal predecessors, (20842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:18,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7008 states to 7008 states and 20842 transitions. [2021-05-03 15:13:18,462 INFO L78 Accepts]: Start accepts. Automaton has 7008 states and 20842 transitions. Word has length 39 [2021-05-03 15:13:18,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:18,462 INFO L480 AbstractCegarLoop]: Abstraction has 7008 states and 20842 transitions. [2021-05-03 15:13:18,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:18,462 INFO L276 IsEmpty]: Start isEmpty. Operand 7008 states and 20842 transitions. [2021-05-03 15:13:18,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:13:18,474 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:13:18,474 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] [2021-05-03 15:13:18,474 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-05-03 15:13:18,474 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:13:18,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:13:18,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1518942532, now seen corresponding path program 44 times [2021-05-03 15:13:18,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:13:18,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032078400] [2021-05-03 15:13:18,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:13:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:13:18,503 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 15:13:18,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032078400] [2021-05-03 15:13:18,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:13:18,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-03 15:13:18,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986874829] [2021-05-03 15:13:18,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-03 15:13:18,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:13:18,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-03 15:13:18,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-03 15:13:18,504 INFO L87 Difference]: Start difference. First operand 7008 states and 20842 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:18,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:13:18,616 INFO L93 Difference]: Finished difference Result 9444 states and 26929 transitions. [2021-05-03 15:13:18,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-03 15:13:18,617 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:13:18,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:13:18,633 INFO L225 Difference]: With dead ends: 9444 [2021-05-03 15:13:18,633 INFO L226 Difference]: Without dead ends: 8824 [2021-05-03 15:13:18,633 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 19.6ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-05-03 15:13:18,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8824 states. [2021-05-03 15:13:18,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8824 to 4125. [2021-05-03 15:13:18,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4125 states, 4124 states have (on average 2.908341416100873) internal successors, (11994), 4124 states have internal predecessors, (11994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:18,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4125 states to 4125 states and 11994 transitions. [2021-05-03 15:13:18,727 INFO L78 Accepts]: Start accepts. Automaton has 4125 states and 11994 transitions. Word has length 39 [2021-05-03 15:13:18,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:18,727 INFO L480 AbstractCegarLoop]: Abstraction has 4125 states and 11994 transitions. [2021-05-03 15:13:18,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:18,727 INFO L276 IsEmpty]: Start isEmpty. Operand 4125 states and 11994 transitions. [2021-05-03 15:13:18,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:13:18,733 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:13:18,733 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] [2021-05-03 15:13:18,733 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-05-03 15:13:18,733 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:13:18,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:13:18,734 INFO L82 PathProgramCache]: Analyzing trace with hash -236999486, now seen corresponding path program 45 times [2021-05-03 15:13:18,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:13:18,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377121559] [2021-05-03 15:13:18,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:13:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:13:18,782 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 15:13:18,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377121559] [2021-05-03 15:13:18,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:13:18,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 15:13:18,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773386132] [2021-05-03 15:13:18,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 15:13:18,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:13:18,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 15:13:18,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-05-03 15:13:18,784 INFO L87 Difference]: Start difference. First operand 4125 states and 11994 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:18,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:13:18,964 INFO L93 Difference]: Finished difference Result 6107 states and 16719 transitions. [2021-05-03 15:13:18,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 15:13:18,964 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:13:18,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:13:18,972 INFO L225 Difference]: With dead ends: 6107 [2021-05-03 15:13:18,972 INFO L226 Difference]: Without dead ends: 4693 [2021-05-03 15:13:18,973 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 42.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-05-03 15:13:18,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4693 states. [2021-05-03 15:13:19,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4693 to 2542. [2021-05-03 15:13:19,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2542 states, 2541 states have (on average 2.786698150334514) internal successors, (7081), 2541 states have internal predecessors, (7081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:19,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 7081 transitions. [2021-05-03 15:13:19,021 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 7081 transitions. Word has length 39 [2021-05-03 15:13:19,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:19,021 INFO L480 AbstractCegarLoop]: Abstraction has 2542 states and 7081 transitions. [2021-05-03 15:13:19,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:19,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 7081 transitions. [2021-05-03 15:13:19,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:13:19,025 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:13:19,025 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] [2021-05-03 15:13:19,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-05-03 15:13:19,025 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:13:19,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:13:19,025 INFO L82 PathProgramCache]: Analyzing trace with hash -634778652, now seen corresponding path program 46 times [2021-05-03 15:13:19,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:13:19,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034496767] [2021-05-03 15:13:19,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:13:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:13:19,078 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 15:13:19,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034496767] [2021-05-03 15:13:19,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:13:19,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-03 15:13:19,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575307309] [2021-05-03 15:13:19,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-03 15:13:19,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:13:19,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-03 15:13:19,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-05-03 15:13:19,079 INFO L87 Difference]: Start difference. First operand 2542 states and 7081 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:19,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:13:19,304 INFO L93 Difference]: Finished difference Result 1862 states and 4307 transitions. [2021-05-03 15:13:19,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-03 15:13:19,304 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:13:19,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:13:19,305 INFO L225 Difference]: With dead ends: 1862 [2021-05-03 15:13:19,306 INFO L226 Difference]: Without dead ends: 648 [2021-05-03 15:13:19,306 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 75.0ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-05-03 15:13:19,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-05-03 15:13:19,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 456. [2021-05-03 15:13:19,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 2.4329670329670328) internal successors, (1107), 455 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:19,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1107 transitions. [2021-05-03 15:13:19,312 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1107 transitions. Word has length 39 [2021-05-03 15:13:19,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:19,312 INFO L480 AbstractCegarLoop]: Abstraction has 456 states and 1107 transitions. [2021-05-03 15:13:19,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:19,312 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1107 transitions. [2021-05-03 15:13:19,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 15:13:19,313 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:13:19,313 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] [2021-05-03 15:13:19,313 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-05-03 15:13:19,313 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-03 15:13:19,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:13:19,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1819342244, now seen corresponding path program 47 times [2021-05-03 15:13:19,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:13:19,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933116615] [2021-05-03 15:13:19,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:13:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:13:19,372 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 15:13:19,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933116615] [2021-05-03 15:13:19,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:13:19,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-03 15:13:19,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422440356] [2021-05-03 15:13:19,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-03 15:13:19,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:13:19,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-03 15:13:19,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-05-03 15:13:19,374 INFO L87 Difference]: Start difference. First operand 456 states and 1107 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:19,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:13:19,548 INFO L93 Difference]: Finished difference Result 391 states and 811 transitions. [2021-05-03 15:13:19,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-03 15:13:19,549 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-03 15:13:19,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:13:19,549 INFO L225 Difference]: With dead ends: 391 [2021-05-03 15:13:19,549 INFO L226 Difference]: Without dead ends: 0 [2021-05-03 15:13:19,549 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 90.5ms TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-05-03 15:13:19,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-03 15:13:19,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-03 15:13:19,550 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 15:13:19,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-03 15:13:19,550 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2021-05-03 15:13:19,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:13:19,550 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-03 15:13:19,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 15:13:19,550 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-03 15:13:19,550 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-03 15:13:19,550 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-05-03 15:13:19,554 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.05 03:13:19 BasicIcfg [2021-05-03 15:13:19,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-03 15:13:19,555 INFO L168 Benchmark]: Toolchain (without parser) took 52989.91 ms. Allocated memory was 348.1 MB in the beginning and 14.1 GB in the end (delta: 13.7 GB). Free memory was 327.7 MB in the beginning and 10.4 GB in the end (delta: -10.1 GB). Peak memory consumption was 3.6 GB. Max. memory is 16.0 GB. [2021-05-03 15:13:19,555 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 348.1 MB. Free memory was 328.8 MB in the beginning and 328.7 MB in the end (delta: 69.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-03 15:13:19,555 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.56 ms. Allocated memory is still 348.1 MB. Free memory was 327.5 MB in the beginning and 326.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-03 15:13:19,555 INFO L168 Benchmark]: Boogie Preprocessor took 21.81 ms. Allocated memory is still 348.1 MB. Free memory was 326.1 MB in the beginning and 325.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-03 15:13:19,555 INFO L168 Benchmark]: RCFGBuilder took 367.94 ms. Allocated memory is still 348.1 MB. Free memory was 325.0 MB in the beginning and 310.1 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-05-03 15:13:19,556 INFO L168 Benchmark]: TraceAbstraction took 52561.26 ms. Allocated memory was 348.1 MB in the beginning and 14.1 GB in the end (delta: 13.7 GB). Free memory was 309.7 MB in the beginning and 10.4 GB in the end (delta: -10.1 GB). Peak memory consumption was 3.6 GB. Max. memory is 16.0 GB. [2021-05-03 15:13:19,556 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 0.23 ms. Allocated memory is still 348.1 MB. Free memory was 328.8 MB in the beginning and 328.7 MB in the end (delta: 69.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 29.56 ms. Allocated memory is still 348.1 MB. Free memory was 327.5 MB in the beginning and 326.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 21.81 ms. Allocated memory is still 348.1 MB. Free memory was 326.1 MB in the beginning and 325.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 367.94 ms. Allocated memory is still 348.1 MB. Free memory was 325.0 MB in the beginning and 310.1 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 52561.26 ms. Allocated memory was 348.1 MB in the beginning and 14.1 GB in the end (delta: 13.7 GB). Free memory was 309.7 MB in the beginning and 10.4 GB in the end (delta: -10.1 GB). Peak memory consumption was 3.6 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 95]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 52423.6ms, OverallIterations: 47, TraceHistogramMax: 1, EmptinessCheckTime: 1643.9ms, AutomataDifference: 22345.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1862.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3516 SDtfs, 5072 SDslu, 12592 SDs, 0 SdLazy, 13314 SolverSat, 2088 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6824.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 574 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 449 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 2628.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24666occurred in iteration=11, InterpolantAutomatonStates: 453, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 23249.8ms AutomataMinimizationTime, 47 MinimizatonAttempts, 380099 StatesRemovedByMinimization, 44 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 73.1ms SsaConstructionTime, 323.1ms SatisfiabilityAnalysisTime, 2580.5ms InterpolantComputationTime, 1833 NumberOfCodeBlocks, 1833 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 1786 ConstructedInterpolants, 0 QuantifiedInterpolants, 5196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 47 InterpolantComputations, 47 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...