/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-dev-770125f [2021-05-21 20:52:44,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 20:52:44,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 20:52:44,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 20:52:44,740 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 [2021-05-21 20:52:44,774 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 20:52:44,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 20:52:44,775 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 20:52:44,776 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 20:52:44,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 20:52:44,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 20:52:44,778 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 20:52:44,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 20:52:44,778 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 20:52:44,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 20:52:44,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 20:52:44,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 20:52:44,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 20:52:44,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 20:52:44,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 20:52:44,780 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 20:52:44,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 20:52:44,780 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 20:52:44,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 20:52:44,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 20:52:44,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 20:52:44,780 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 20:52:44,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 20:52:44,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 20:52:44,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 20:52:44,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 20:52:44,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 20:52:44,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 20:52:44,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 20:52:44,781 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 20:52:44,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 20:52:44,782 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 20:52:45,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 20:52:45,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 20:52:45,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 20:52:45,057 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-05-21 20:52:45,059 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-05-21 20:52:45,059 INFO L432 ainManager$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 [2021-05-21 20:52:45,059 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl' [2021-05-21 20:52:45,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 20:52:45,090 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-21 20:52:45,091 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 20:52:45,091 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 20:52:45,092 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 20:52:45,103 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 21.05 08:52:45" (1/1) ... [2021-05-21 20:52:45,111 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 21.05 08:52:45" (1/1) ... [2021-05-21 20:52:45,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 20:52:45,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 20:52:45,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 20:52:45,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 20:52:45,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:52:45" (1/1) ... [2021-05-21 20:52:45,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:52:45" (1/1) ... [2021-05-21 20:52:45,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:52:45" (1/1) ... [2021-05-21 20:52:45,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:52:45" (1/1) ... [2021-05-21 20:52:45,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:52:45" (1/1) ... [2021-05-21 20:52:45,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:52:45" (1/1) ... [2021-05-21 20:52:45,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:52:45" (1/1) ... [2021-05-21 20:52:45,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 20:52:45,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 20:52:45,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 20:52:45,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 20:52:45,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:52:45" (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 [2021-05-21 20:52:45,224 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-05-21 20:52:45,225 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-05-21 20:52:45,225 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-05-21 20:52:45,225 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-05-21 20:52:45,225 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-05-21 20:52:45,226 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-05-21 20:52:45,226 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-05-21 20:52:45,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 20:52:45,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 20:52:45,226 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-05-21 20:52:45,226 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-05-21 20:52:45,227 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-05-21 20:52:45,228 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-05-21 20:52:45,228 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-05-21 20:52:45,228 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-05-21 20:52:45,228 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-05-21 20:52:45,228 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-05-21 20:52:45,228 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-05-21 20:52:45,229 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 20:52:45,438 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 20:52:45,438 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-21 20:52:45,440 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 08:52:45 BoogieIcfgContainer [2021-05-21 20:52:45,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 20:52:45,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 20:52:45,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 20:52:45,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 20:52:45,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:52:45" (1/2) ... [2021-05-21 20:52:45,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133832ba and model type ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 08:52:45, skipping insertion in model container [2021-05-21 20:52:45,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 08:52:45" (2/2) ... [2021-05-21 20:52:45,446 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-5.wvr.bpl [2021-05-21 20:52:45,450 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 20:52:45,450 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 20:52:45,450 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 20:52:45,451 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 20:52:45,517 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-05-21 20:52:45,540 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-05-21 20:52:45,576 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 20:52:45,577 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 20:52:45,577 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 20:52:45,588 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 20:52:45,589 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 20:52:45,589 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 20:52:45,589 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 20:52:45,589 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 20:52:45,599 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 46 transitions, 132 flow [2021-05-21 20:52:46,552 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) [2021-05-21 20:52:46,585 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) [2021-05-21 20:52:46,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:52:46,665 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:52:46,666 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:52:46,667 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:52:46,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:52:46,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1270525438, now seen corresponding path program 1 times [2021-05-21 20:52:46,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:52:46,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720002839] [2021-05-21 20:52:46,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:52:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:52:46,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:52:46,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:52:46,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720002839] [2021-05-21 20:52:46,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720002839] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:52:46,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:52:46,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-21 20:52:46,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796168948] [2021-05-21 20:52:46,884 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-21 20:52:46,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:52:46,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-21 20:52:46,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-21 20:52:46,917 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) [2021-05-21 20:52:47,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:52:47,256 INFO L93 Difference]: Finished difference Result 12865 states and 53759 transitions. [2021-05-21 20:52:47,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-21 20:52:47,258 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 [2021-05-21 20:52:47,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:52:47,436 INFO L225 Difference]: With dead ends: 12865 [2021-05-21 20:52:47,436 INFO L226 Difference]: Without dead ends: 12865 [2021-05-21 20:52:47,440 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-21 20:52:47,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12865 states. [2021-05-21 20:52:48,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12865 to 12865. [2021-05-21 20:52:48,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12865 states, 12864 states have (on average 4.179026741293533) internal successors, (53759), 12864 states have internal predecessors, (53759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:52:48,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12865 states to 12865 states and 53759 transitions. [2021-05-21 20:52:48,371 INFO L78 Accepts]: Start accepts. Automaton has 12865 states and 53759 transitions. Word has length 39 [2021-05-21 20:52:48,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:52:48,371 INFO L482 AbstractCegarLoop]: Abstraction has 12865 states and 53759 transitions. [2021-05-21 20:52:48,372 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:52:48,372 INFO L276 IsEmpty]: Start isEmpty. Operand 12865 states and 53759 transitions. [2021-05-21 20:52:48,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:52:48,451 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:52:48,451 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:52:48,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 20:52:48,452 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:52:48,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:52:48,455 INFO L82 PathProgramCache]: Analyzing trace with hash -944687490, now seen corresponding path program 2 times [2021-05-21 20:52:48,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:52:48,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510950768] [2021-05-21 20:52:48,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:52:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:52:48,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:52:48,557 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:52:48,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510950768] [2021-05-21 20:52:48,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510950768] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:52:48,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:52:48,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-21 20:52:48,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651550344] [2021-05-21 20:52:48,559 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 20:52:48,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:52:48,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 20:52:48,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-05-21 20:52:48,563 INFO L87 Difference]: Start difference. First operand 12865 states and 53759 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:52:49,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:52:49,128 INFO L93 Difference]: Finished difference Result 32685 states and 135133 transitions. [2021-05-21 20:52:49,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-21 20:52:49,129 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 [2021-05-21 20:52:49,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:52:49,383 INFO L225 Difference]: With dead ends: 32685 [2021-05-21 20:52:49,383 INFO L226 Difference]: Without dead ends: 32685 [2021-05-21 20:52:49,384 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.6ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:52:49,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32685 states. [2021-05-21 20:52:50,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32685 to 16006. [2021-05-21 20:52:50,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16006 states, 16005 states have (on average 4.138831615120275) internal successors, (66242), 16005 states have internal predecessors, (66242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:52:50,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16006 states to 16006 states and 66242 transitions. [2021-05-21 20:52:50,251 INFO L78 Accepts]: Start accepts. Automaton has 16006 states and 66242 transitions. Word has length 39 [2021-05-21 20:52:50,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:52:50,252 INFO L482 AbstractCegarLoop]: Abstraction has 16006 states and 66242 transitions. [2021-05-21 20:52:50,252 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:52:50,252 INFO L276 IsEmpty]: Start isEmpty. Operand 16006 states and 66242 transitions. [2021-05-21 20:52:50,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:52:50,295 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:52:50,295 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:52:50,295 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 20:52:50,296 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:52:50,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:52:50,296 INFO L82 PathProgramCache]: Analyzing trace with hash -696461990, now seen corresponding path program 3 times [2021-05-21 20:52:50,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:52:50,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896034491] [2021-05-21 20:52:50,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:52:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:52:50,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:52:50,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:52:50,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896034491] [2021-05-21 20:52:50,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896034491] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:52:50,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:52:50,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 20:52:50,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783476098] [2021-05-21 20:52:50,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:52:50,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:52:50,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:52:50,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:52:50,453 INFO L87 Difference]: Start difference. First operand 16006 states and 66242 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:52:50,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:52:50,943 INFO L93 Difference]: Finished difference Result 34910 states and 143500 transitions. [2021-05-21 20:52:50,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-21 20:52:50,944 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 [2021-05-21 20:52:50,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:52:51,119 INFO L225 Difference]: With dead ends: 34910 [2021-05-21 20:52:51,120 INFO L226 Difference]: Without dead ends: 34910 [2021-05-21 20:52:51,120 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 27.4ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:52:51,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34910 states. [2021-05-21 20:52:51,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34910 to 17906. [2021-05-21 20:52:51,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17906 states, 17905 states have (on average 4.128399888299358) internal successors, (73919), 17905 states have internal predecessors, (73919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:52:51,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17906 states to 17906 states and 73919 transitions. [2021-05-21 20:52:51,940 INFO L78 Accepts]: Start accepts. Automaton has 17906 states and 73919 transitions. Word has length 39 [2021-05-21 20:52:51,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:52:51,941 INFO L482 AbstractCegarLoop]: Abstraction has 17906 states and 73919 transitions. [2021-05-21 20:52:51,941 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:52:51,941 INFO L276 IsEmpty]: Start isEmpty. Operand 17906 states and 73919 transitions. [2021-05-21 20:52:51,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:52:51,984 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:52:51,984 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:52:51,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 20:52:51,984 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:52:51,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:52:51,985 INFO L82 PathProgramCache]: Analyzing trace with hash 942509060, now seen corresponding path program 4 times [2021-05-21 20:52:51,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:52:51,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711771793] [2021-05-21 20:52:51,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:52:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:52:52,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:52:52,052 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:52:52,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711771793] [2021-05-21 20:52:52,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711771793] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:52:52,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:52:52,054 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:52:52,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824361876] [2021-05-21 20:52:52,054 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:52:52,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:52:52,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:52:52,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:52:52,055 INFO L87 Difference]: Start difference. First operand 17906 states and 73919 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:52:52,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:52:52,598 INFO L93 Difference]: Finished difference Result 31098 states and 127412 transitions. [2021-05-21 20:52:52,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:52:52,599 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 [2021-05-21 20:52:52,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:52:52,696 INFO L225 Difference]: With dead ends: 31098 [2021-05-21 20:52:52,696 INFO L226 Difference]: Without dead ends: 31098 [2021-05-21 20:52:52,697 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 30.8ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:52:52,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31098 states. [2021-05-21 20:52:53,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31098 to 18162. [2021-05-21 20:52:53,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18162 states, 18161 states have (on average 4.116017840427289) internal successors, (74751), 18161 states have internal predecessors, (74751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:52:53,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18162 states to 18162 states and 74751 transitions. [2021-05-21 20:52:53,343 INFO L78 Accepts]: Start accepts. Automaton has 18162 states and 74751 transitions. Word has length 39 [2021-05-21 20:52:53,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:52:53,343 INFO L482 AbstractCegarLoop]: Abstraction has 18162 states and 74751 transitions. [2021-05-21 20:52:53,343 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:52:53,343 INFO L276 IsEmpty]: Start isEmpty. Operand 18162 states and 74751 transitions. [2021-05-21 20:52:53,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:52:53,378 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:52:53,378 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:52:53,378 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 20:52:53,378 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:52:53,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:52:53,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1835727168, now seen corresponding path program 5 times [2021-05-21 20:52:53,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:52:53,379 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611635961] [2021-05-21 20:52:53,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:52:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:52:53,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:52:53,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:52:53,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611635961] [2021-05-21 20:52:53,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611635961] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:52:53,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:52:53,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:52:53,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444474956] [2021-05-21 20:52:53,458 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:52:53,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:52:53,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:52:53,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:52:53,459 INFO L87 Difference]: Start difference. First operand 18162 states and 74751 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:52:54,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:52:54,086 INFO L93 Difference]: Finished difference Result 36912 states and 149288 transitions. [2021-05-21 20:52:54,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:52:54,087 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 20:52:54,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:52:54,200 INFO L225 Difference]: With dead ends: 36912 [2021-05-21 20:52:54,201 INFO L226 Difference]: Without dead ends: 36912 [2021-05-21 20:52:54,201 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 50.5ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:52:54,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36912 states. [2021-05-21 20:52:55,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36912 to 20620. [2021-05-21 20:52:55,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20620 states, 20619 states have (on average 4.04350356467336) internal successors, (83373), 20619 states have internal predecessors, (83373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:52:55,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20620 states to 20620 states and 83373 transitions. [2021-05-21 20:52:55,107 INFO L78 Accepts]: Start accepts. Automaton has 20620 states and 83373 transitions. Word has length 39 [2021-05-21 20:52:55,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:52:55,108 INFO L482 AbstractCegarLoop]: Abstraction has 20620 states and 83373 transitions. [2021-05-21 20:52:55,108 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:52:55,108 INFO L276 IsEmpty]: Start isEmpty. Operand 20620 states and 83373 transitions. [2021-05-21 20:52:55,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:52:55,142 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:52:55,142 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:52:55,142 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-21 20:52:55,142 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:52:55,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:52:55,142 INFO L82 PathProgramCache]: Analyzing trace with hash -518665604, now seen corresponding path program 6 times [2021-05-21 20:52:55,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:52:55,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612100327] [2021-05-21 20:52:55,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:52:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:52:55,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:52:55,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:52:55,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612100327] [2021-05-21 20:52:55,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612100327] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:52:55,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:52:55,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:52:55,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379072905] [2021-05-21 20:52:55,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:52:55,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:52:55,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:52:55,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:52:55,398 INFO L87 Difference]: Start difference. First operand 20620 states and 83373 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:52:56,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:52:56,066 INFO L93 Difference]: Finished difference Result 40027 states and 158784 transitions. [2021-05-21 20:52:56,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-21 20:52:56,066 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 [2021-05-21 20:52:56,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:52:56,174 INFO L225 Difference]: With dead ends: 40027 [2021-05-21 20:52:56,175 INFO L226 Difference]: Without dead ends: 40027 [2021-05-21 20:52:56,175 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 106.9ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-05-21 20:52:56,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40027 states. [2021-05-21 20:52:56,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40027 to 23077. [2021-05-21 20:52:56,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23077 states, 23076 states have (on average 3.9587016814005893) internal successors, (91351), 23076 states have internal predecessors, (91351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:52:56,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23077 states to 23077 states and 91351 transitions. [2021-05-21 20:52:56,902 INFO L78 Accepts]: Start accepts. Automaton has 23077 states and 91351 transitions. Word has length 39 [2021-05-21 20:52:56,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:52:56,903 INFO L482 AbstractCegarLoop]: Abstraction has 23077 states and 91351 transitions. [2021-05-21 20:52:56,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:52:56,903 INFO L276 IsEmpty]: Start isEmpty. Operand 23077 states and 91351 transitions. [2021-05-21 20:52:56,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:52:56,949 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:52:56,949 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:52:56,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-21 20:52:56,949 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:52:56,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:52:56,950 INFO L82 PathProgramCache]: Analyzing trace with hash -942887360, now seen corresponding path program 7 times [2021-05-21 20:52:56,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:52:56,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019043872] [2021-05-21 20:52:56,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:52:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:52:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:52:57,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:52:57,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019043872] [2021-05-21 20:52:57,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019043872] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:52:57,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:52:57,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-21 20:52:57,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744647349] [2021-05-21 20:52:57,009 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-21 20:52:57,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:52:57,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-21 20:52:57,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-21 20:52:57,010 INFO L87 Difference]: Start difference. First operand 23077 states and 91351 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:52:57,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:52:57,165 INFO L93 Difference]: Finished difference Result 35393 states and 139274 transitions. [2021-05-21 20:52:57,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-21 20:52:57,165 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 [2021-05-21 20:52:57,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:52:57,236 INFO L225 Difference]: With dead ends: 35393 [2021-05-21 20:52:57,236 INFO L226 Difference]: Without dead ends: 23425 [2021-05-21 20:52:57,236 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.7ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-05-21 20:52:57,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23425 states. [2021-05-21 20:52:57,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23425 to 23425. [2021-05-21 20:52:57,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23425 states, 23424 states have (on average 3.8121584699453552) internal successors, (89296), 23424 states have internal predecessors, (89296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:52:58,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23425 states to 23425 states and 89296 transitions. [2021-05-21 20:52:58,023 INFO L78 Accepts]: Start accepts. Automaton has 23425 states and 89296 transitions. Word has length 39 [2021-05-21 20:52:58,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:52:58,023 INFO L482 AbstractCegarLoop]: Abstraction has 23425 states and 89296 transitions. [2021-05-21 20:52:58,023 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:52:58,023 INFO L276 IsEmpty]: Start isEmpty. Operand 23425 states and 89296 transitions. [2021-05-21 20:52:58,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:52:58,063 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:52:58,063 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:52:58,063 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-21 20:52:58,063 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:52:58,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:52:58,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1452946602, now seen corresponding path program 8 times [2021-05-21 20:52:58,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:52:58,064 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236366715] [2021-05-21 20:52:58,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:52:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:52:58,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:52:58,115 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:52:58,115 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236366715] [2021-05-21 20:52:58,115 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236366715] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:52:58,115 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:52:58,115 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 20:52:58,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864689433] [2021-05-21 20:52:58,116 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:52:58,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:52:58,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:52:58,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:52:58,116 INFO L87 Difference]: Start difference. First operand 23425 states and 89296 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:52:58,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:52:58,456 INFO L93 Difference]: Finished difference Result 41696 states and 157940 transitions. [2021-05-21 20:52:58,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-21 20:52:58,457 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 [2021-05-21 20:52:58,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:52:58,570 INFO L225 Difference]: With dead ends: 41696 [2021-05-21 20:52:58,570 INFO L226 Difference]: Without dead ends: 41642 [2021-05-21 20:52:58,570 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 25.6ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:52:58,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41642 states. [2021-05-21 20:52:59,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41642 to 24638. [2021-05-21 20:52:59,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24638 states, 24637 states have (on average 3.794658440556886) internal successors, (93489), 24637 states have internal predecessors, (93489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:52:59,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24638 states to 24638 states and 93489 transitions. [2021-05-21 20:52:59,483 INFO L78 Accepts]: Start accepts. Automaton has 24638 states and 93489 transitions. Word has length 39 [2021-05-21 20:52:59,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:52:59,483 INFO L482 AbstractCegarLoop]: Abstraction has 24638 states and 93489 transitions. [2021-05-21 20:52:59,484 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:52:59,484 INFO L276 IsEmpty]: Start isEmpty. Operand 24638 states and 93489 transitions. [2021-05-21 20:52:59,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:52:59,526 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:52:59,526 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:52:59,526 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-21 20:52:59,526 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:52:59,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:52:59,526 INFO L82 PathProgramCache]: Analyzing trace with hash -611468740, now seen corresponding path program 9 times [2021-05-21 20:52:59,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:52:59,527 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036977319] [2021-05-21 20:52:59,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:52:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:52:59,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:52:59,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:52:59,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036977319] [2021-05-21 20:52:59,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036977319] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:52:59,565 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:52:59,565 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-21 20:52:59,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052616410] [2021-05-21 20:52:59,565 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 20:52:59,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:52:59,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 20:52:59,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-05-21 20:52:59,566 INFO L87 Difference]: Start difference. First operand 24638 states and 93489 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:00,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:00,086 INFO L93 Difference]: Finished difference Result 42985 states and 160920 transitions. [2021-05-21 20:53:00,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-21 20:53:00,086 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 [2021-05-21 20:53:00,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:00,219 INFO L225 Difference]: With dead ends: 42985 [2021-05-21 20:53:00,220 INFO L226 Difference]: Without dead ends: 42898 [2021-05-21 20:53:00,220 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.0ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:53:00,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42898 states. [2021-05-21 20:53:00,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42898 to 25620. [2021-05-21 20:53:00,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25620 states, 25619 states have (on average 3.7593973222998556) internal successors, (96312), 25619 states have internal predecessors, (96312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:00,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25620 states to 25620 states and 96312 transitions. [2021-05-21 20:53:00,815 INFO L78 Accepts]: Start accepts. Automaton has 25620 states and 96312 transitions. Word has length 39 [2021-05-21 20:53:00,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:00,815 INFO L482 AbstractCegarLoop]: Abstraction has 25620 states and 96312 transitions. [2021-05-21 20:53:00,815 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:00,815 INFO L276 IsEmpty]: Start isEmpty. Operand 25620 states and 96312 transitions. [2021-05-21 20:53:00,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:00,858 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:00,858 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:00,859 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-21 20:53:00,859 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:00,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:00,859 INFO L82 PathProgramCache]: Analyzing trace with hash 474296098, now seen corresponding path program 10 times [2021-05-21 20:53:00,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:00,859 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961864002] [2021-05-21 20:53:00,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:00,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:00,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:00,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961864002] [2021-05-21 20:53:00,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961864002] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:00,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:00,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 20:53:00,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095950340] [2021-05-21 20:53:00,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:53:00,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:00,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:53:00,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:53:00,906 INFO L87 Difference]: Start difference. First operand 25620 states and 96312 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:01,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:01,526 INFO L93 Difference]: Finished difference Result 43699 states and 163815 transitions. [2021-05-21 20:53:01,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-21 20:53:01,526 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 [2021-05-21 20:53:01,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:01,622 INFO L225 Difference]: With dead ends: 43699 [2021-05-21 20:53:01,622 INFO L226 Difference]: Without dead ends: 43663 [2021-05-21 20:53:01,622 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 23.6ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:53:01,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43663 states. [2021-05-21 20:53:02,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43663 to 25389. [2021-05-21 20:53:02,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25389 states, 25388 states have (on average 3.7583110130770443) internal successors, (95416), 25388 states have internal predecessors, (95416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:02,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25389 states to 25389 states and 95416 transitions. [2021-05-21 20:53:02,596 INFO L78 Accepts]: Start accepts. Automaton has 25389 states and 95416 transitions. Word has length 39 [2021-05-21 20:53:02,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:02,597 INFO L482 AbstractCegarLoop]: Abstraction has 25389 states and 95416 transitions. [2021-05-21 20:53:02,597 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:02,597 INFO L276 IsEmpty]: Start isEmpty. Operand 25389 states and 95416 transitions. [2021-05-21 20:53:02,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:02,649 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:02,650 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:02,650 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-21 20:53:02,650 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:02,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:02,650 INFO L82 PathProgramCache]: Analyzing trace with hash 74649346, now seen corresponding path program 11 times [2021-05-21 20:53:02,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:02,650 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351726197] [2021-05-21 20:53:02,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:02,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:02,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:02,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351726197] [2021-05-21 20:53:02,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351726197] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:02,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:02,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-21 20:53:02,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751814661] [2021-05-21 20:53:02,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-21 20:53:02,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:02,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-21 20:53:02,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-21 20:53:02,689 INFO L87 Difference]: Start difference. First operand 25389 states and 95416 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:02,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:02,895 INFO L93 Difference]: Finished difference Result 25139 states and 94087 transitions. [2021-05-21 20:53:02,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-21 20:53:02,896 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 [2021-05-21 20:53:02,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:02,955 INFO L225 Difference]: With dead ends: 25139 [2021-05-21 20:53:02,955 INFO L226 Difference]: Without dead ends: 25088 [2021-05-21 20:53:02,955 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-21 20:53:03,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25088 states. [2021-05-21 20:53:03,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25088 to 24839. [2021-05-21 20:53:03,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24839 states, 24838 states have (on average 3.7560995249214915) internal successors, (93294), 24838 states have internal predecessors, (93294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:03,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24839 states to 24839 states and 93294 transitions. [2021-05-21 20:53:03,529 INFO L78 Accepts]: Start accepts. Automaton has 24839 states and 93294 transitions. Word has length 39 [2021-05-21 20:53:03,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:03,529 INFO L482 AbstractCegarLoop]: Abstraction has 24839 states and 93294 transitions. [2021-05-21 20:53:03,530 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:03,530 INFO L276 IsEmpty]: Start isEmpty. Operand 24839 states and 93294 transitions. [2021-05-21 20:53:03,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:03,578 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:03,578 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:03,578 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-21 20:53:03,578 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:03,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:03,579 INFO L82 PathProgramCache]: Analyzing trace with hash -798849100, now seen corresponding path program 12 times [2021-05-21 20:53:03,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:03,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458440889] [2021-05-21 20:53:03,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:03,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:03,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:03,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458440889] [2021-05-21 20:53:03,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458440889] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:03,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:03,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:53:03,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778464134] [2021-05-21 20:53:03,629 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:53:03,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:03,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:53:03,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:53:03,630 INFO L87 Difference]: Start difference. First operand 24839 states and 93294 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:04,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:04,269 INFO L93 Difference]: Finished difference Result 43989 states and 162312 transitions. [2021-05-21 20:53:04,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:53:04,269 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 [2021-05-21 20:53:04,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:04,380 INFO L225 Difference]: With dead ends: 43989 [2021-05-21 20:53:04,380 INFO L226 Difference]: Without dead ends: 43863 [2021-05-21 20:53:04,380 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 45.8ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:53:04,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43863 states. [2021-05-21 20:53:05,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43863 to 28440. [2021-05-21 20:53:05,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28440 states, 28439 states have (on average 3.686486866626815) internal successors, (104840), 28439 states have internal predecessors, (104840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:05,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28440 states to 28440 states and 104840 transitions. [2021-05-21 20:53:05,401 INFO L78 Accepts]: Start accepts. Automaton has 28440 states and 104840 transitions. Word has length 39 [2021-05-21 20:53:05,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:05,402 INFO L482 AbstractCegarLoop]: Abstraction has 28440 states and 104840 transitions. [2021-05-21 20:53:05,402 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:05,402 INFO L276 IsEmpty]: Start isEmpty. Operand 28440 states and 104840 transitions. [2021-05-21 20:53:05,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:05,451 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:05,452 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:05,452 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-21 20:53:05,452 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:05,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:05,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1771965296, now seen corresponding path program 13 times [2021-05-21 20:53:05,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:05,452 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507617259] [2021-05-21 20:53:05,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:05,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:05,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:05,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507617259] [2021-05-21 20:53:05,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507617259] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:05,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:05,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:53:05,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109979273] [2021-05-21 20:53:05,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:53:05,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:05,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:53:05,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:53:05,520 INFO L87 Difference]: Start difference. First operand 28440 states and 104840 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:05,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:05,947 INFO L93 Difference]: Finished difference Result 42223 states and 154538 transitions. [2021-05-21 20:53:05,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:53:05,948 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 [2021-05-21 20:53:05,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:06,064 INFO L225 Difference]: With dead ends: 42223 [2021-05-21 20:53:06,064 INFO L226 Difference]: Without dead ends: 42199 [2021-05-21 20:53:06,065 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 59.8ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-05-21 20:53:06,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42199 states. [2021-05-21 20:53:06,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42199 to 28621. [2021-05-21 20:53:06,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28621 states, 28620 states have (on average 3.675611460517121) internal successors, (105196), 28620 states have internal predecessors, (105196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:07,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28621 states to 28621 states and 105196 transitions. [2021-05-21 20:53:07,017 INFO L78 Accepts]: Start accepts. Automaton has 28621 states and 105196 transitions. Word has length 39 [2021-05-21 20:53:07,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:07,017 INFO L482 AbstractCegarLoop]: Abstraction has 28621 states and 105196 transitions. [2021-05-21 20:53:07,017 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:07,018 INFO L276 IsEmpty]: Start isEmpty. Operand 28621 states and 105196 transitions. [2021-05-21 20:53:07,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:07,071 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:07,071 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:07,071 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-21 20:53:07,071 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:07,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:07,071 INFO L82 PathProgramCache]: Analyzing trace with hash -692989772, now seen corresponding path program 14 times [2021-05-21 20:53:07,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:07,071 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315240690] [2021-05-21 20:53:07,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:07,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:07,098 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:07,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315240690] [2021-05-21 20:53:07,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315240690] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:07,098 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:07,098 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-21 20:53:07,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703205701] [2021-05-21 20:53:07,099 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-21 20:53:07,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:07,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-21 20:53:07,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-21 20:53:07,099 INFO L87 Difference]: Start difference. First operand 28621 states and 105196 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:07,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:07,293 INFO L93 Difference]: Finished difference Result 27813 states and 101796 transitions. [2021-05-21 20:53:07,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-21 20:53:07,294 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 [2021-05-21 20:53:07,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:07,354 INFO L225 Difference]: With dead ends: 27813 [2021-05-21 20:53:07,354 INFO L226 Difference]: Without dead ends: 27738 [2021-05-21 20:53:07,355 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-21 20:53:07,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27738 states. [2021-05-21 20:53:08,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27738 to 27386. [2021-05-21 20:53:08,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27386 states, 27385 states have (on average 3.679496074493336) internal successors, (100763), 27385 states have internal predecessors, (100763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:08,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27386 states to 27386 states and 100763 transitions. [2021-05-21 20:53:08,205 INFO L78 Accepts]: Start accepts. Automaton has 27386 states and 100763 transitions. Word has length 39 [2021-05-21 20:53:08,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:08,205 INFO L482 AbstractCegarLoop]: Abstraction has 27386 states and 100763 transitions. [2021-05-21 20:53:08,205 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:08,205 INFO L276 IsEmpty]: Start isEmpty. Operand 27386 states and 100763 transitions. [2021-05-21 20:53:08,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:08,258 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:08,258 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:08,258 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-21 20:53:08,258 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:08,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:08,258 INFO L82 PathProgramCache]: Analyzing trace with hash -747163012, now seen corresponding path program 15 times [2021-05-21 20:53:08,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:08,259 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063068638] [2021-05-21 20:53:08,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:08,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:08,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063068638] [2021-05-21 20:53:08,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063068638] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:08,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:08,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-21 20:53:08,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438823218] [2021-05-21 20:53:08,303 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 20:53:08,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:08,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 20:53:08,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-21 20:53:08,303 INFO L87 Difference]: Start difference. First operand 27386 states and 100763 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:08,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:08,618 INFO L93 Difference]: Finished difference Result 50523 states and 183246 transitions. [2021-05-21 20:53:08,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-21 20:53:08,619 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 [2021-05-21 20:53:08,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:08,760 INFO L225 Difference]: With dead ends: 50523 [2021-05-21 20:53:08,761 INFO L226 Difference]: Without dead ends: 50475 [2021-05-21 20:53:08,761 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.6ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:53:08,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50475 states. [2021-05-21 20:53:09,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50475 to 27707. [2021-05-21 20:53:09,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27707 states, 27706 states have (on average 3.667978055294882) internal successors, (101625), 27706 states have internal predecessors, (101625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:09,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27707 states to 27707 states and 101625 transitions. [2021-05-21 20:53:09,876 INFO L78 Accepts]: Start accepts. Automaton has 27707 states and 101625 transitions. Word has length 39 [2021-05-21 20:53:09,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:09,876 INFO L482 AbstractCegarLoop]: Abstraction has 27707 states and 101625 transitions. [2021-05-21 20:53:09,876 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:09,876 INFO L276 IsEmpty]: Start isEmpty. Operand 27707 states and 101625 transitions. [2021-05-21 20:53:09,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:09,923 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:09,924 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:09,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-21 20:53:09,924 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:09,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:09,924 INFO L82 PathProgramCache]: Analyzing trace with hash 301429852, now seen corresponding path program 16 times [2021-05-21 20:53:09,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:09,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928273587] [2021-05-21 20:53:09,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:09,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:09,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:09,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:09,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928273587] [2021-05-21 20:53:09,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928273587] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:09,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:09,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-21 20:53:09,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88754261] [2021-05-21 20:53:09,958 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 20:53:09,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:09,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 20:53:09,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-21 20:53:09,959 INFO L87 Difference]: Start difference. First operand 27707 states and 101625 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:10,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:10,181 INFO L93 Difference]: Finished difference Result 39646 states and 142334 transitions. [2021-05-21 20:53:10,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-21 20:53:10,182 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 [2021-05-21 20:53:10,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:10,257 INFO L225 Difference]: With dead ends: 39646 [2021-05-21 20:53:10,257 INFO L226 Difference]: Without dead ends: 39506 [2021-05-21 20:53:10,258 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.7ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:53:10,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39506 states. [2021-05-21 20:53:11,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39506 to 23423. [2021-05-21 20:53:11,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23423 states, 23422 states have (on average 3.5910255315515327) internal successors, (84109), 23422 states have internal predecessors, (84109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:11,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23423 states to 23423 states and 84109 transitions. [2021-05-21 20:53:11,135 INFO L78 Accepts]: Start accepts. Automaton has 23423 states and 84109 transitions. Word has length 39 [2021-05-21 20:53:11,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:11,136 INFO L482 AbstractCegarLoop]: Abstraction has 23423 states and 84109 transitions. [2021-05-21 20:53:11,137 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:11,137 INFO L276 IsEmpty]: Start isEmpty. Operand 23423 states and 84109 transitions. [2021-05-21 20:53:11,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:11,168 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:11,168 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:11,168 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-21 20:53:11,168 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:11,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:11,169 INFO L82 PathProgramCache]: Analyzing trace with hash -2132816678, now seen corresponding path program 17 times [2021-05-21 20:53:11,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:11,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349125184] [2021-05-21 20:53:11,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:11,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:11,210 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:11,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349125184] [2021-05-21 20:53:11,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349125184] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:11,211 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:11,211 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 20:53:11,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698085869] [2021-05-21 20:53:11,211 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:53:11,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:11,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:53:11,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:53:11,212 INFO L87 Difference]: Start difference. First operand 23423 states and 84109 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:11,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:11,446 INFO L93 Difference]: Finished difference Result 40941 states and 145659 transitions. [2021-05-21 20:53:11,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-21 20:53:11,446 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 [2021-05-21 20:53:11,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:11,524 INFO L225 Difference]: With dead ends: 40941 [2021-05-21 20:53:11,524 INFO L226 Difference]: Without dead ends: 40659 [2021-05-21 20:53:11,525 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 21.3ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:53:11,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40659 states. [2021-05-21 20:53:12,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40659 to 24350. [2021-05-21 20:53:12,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24350 states, 24349 states have (on average 3.5688118608567088) internal successors, (86897), 24349 states have internal predecessors, (86897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:12,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24350 states to 24350 states and 86897 transitions. [2021-05-21 20:53:12,466 INFO L78 Accepts]: Start accepts. Automaton has 24350 states and 86897 transitions. Word has length 39 [2021-05-21 20:53:12,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:12,466 INFO L482 AbstractCegarLoop]: Abstraction has 24350 states and 86897 transitions. [2021-05-21 20:53:12,466 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:12,466 INFO L276 IsEmpty]: Start isEmpty. Operand 24350 states and 86897 transitions. [2021-05-21 20:53:12,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:12,502 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:12,502 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:12,502 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-21 20:53:12,502 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:12,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:12,503 INFO L82 PathProgramCache]: Analyzing trace with hash 619948732, now seen corresponding path program 18 times [2021-05-21 20:53:12,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:12,503 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103506961] [2021-05-21 20:53:12,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:12,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:12,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:12,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103506961] [2021-05-21 20:53:12,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103506961] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:12,559 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:12,559 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:53:12,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187598104] [2021-05-21 20:53:12,559 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:53:12,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:12,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:53:12,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:53:12,560 INFO L87 Difference]: Start difference. First operand 24350 states and 86897 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:12,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:12,903 INFO L93 Difference]: Finished difference Result 41722 states and 144495 transitions. [2021-05-21 20:53:12,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:53:12,903 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 [2021-05-21 20:53:12,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:12,992 INFO L225 Difference]: With dead ends: 41722 [2021-05-21 20:53:12,992 INFO L226 Difference]: Without dead ends: 41134 [2021-05-21 20:53:12,992 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 47.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:53:13,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41134 states. [2021-05-21 20:53:13,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41134 to 24602. [2021-05-21 20:53:13,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24602 states, 24601 states have (on average 3.503231575952197) internal successors, (86183), 24601 states have internal predecessors, (86183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:13,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24602 states to 24602 states and 86183 transitions. [2021-05-21 20:53:13,941 INFO L78 Accepts]: Start accepts. Automaton has 24602 states and 86183 transitions. Word has length 39 [2021-05-21 20:53:13,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:13,941 INFO L482 AbstractCegarLoop]: Abstraction has 24602 states and 86183 transitions. [2021-05-21 20:53:13,941 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:13,941 INFO L276 IsEmpty]: Start isEmpty. Operand 24602 states and 86183 transitions. [2021-05-21 20:53:13,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:13,981 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:13,981 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:13,981 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-21 20:53:13,981 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:13,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:13,981 INFO L82 PathProgramCache]: Analyzing trace with hash -262188358, now seen corresponding path program 19 times [2021-05-21 20:53:13,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:13,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510897161] [2021-05-21 20:53:13,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:14,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:14,025 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:14,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510897161] [2021-05-21 20:53:14,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510897161] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:14,025 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:14,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 20:53:14,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136951593] [2021-05-21 20:53:14,026 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:53:14,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:14,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:53:14,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:53:14,026 INFO L87 Difference]: Start difference. First operand 24602 states and 86183 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:14,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:14,285 INFO L93 Difference]: Finished difference Result 39683 states and 136545 transitions. [2021-05-21 20:53:14,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-21 20:53:14,285 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 [2021-05-21 20:53:14,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:14,366 INFO L225 Difference]: With dead ends: 39683 [2021-05-21 20:53:14,366 INFO L226 Difference]: Without dead ends: 39331 [2021-05-21 20:53:14,366 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 23.3ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:53:14,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39331 states. [2021-05-21 20:53:14,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39331 to 23826. [2021-05-21 20:53:14,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23826 states, 23825 states have (on average 3.4768520461699897) internal successors, (82836), 23825 states have internal predecessors, (82836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:14,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23826 states to 23826 states and 82836 transitions. [2021-05-21 20:53:14,951 INFO L78 Accepts]: Start accepts. Automaton has 23826 states and 82836 transitions. Word has length 39 [2021-05-21 20:53:14,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:14,951 INFO L482 AbstractCegarLoop]: Abstraction has 23826 states and 82836 transitions. [2021-05-21 20:53:14,951 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:14,951 INFO L276 IsEmpty]: Start isEmpty. Operand 23826 states and 82836 transitions. [2021-05-21 20:53:14,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:14,983 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:14,983 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:14,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-05-21 20:53:14,984 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:14,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:14,984 INFO L82 PathProgramCache]: Analyzing trace with hash -999623524, now seen corresponding path program 20 times [2021-05-21 20:53:14,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:14,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305472087] [2021-05-21 20:53:14,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:15,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:15,041 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:15,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305472087] [2021-05-21 20:53:15,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305472087] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:15,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:15,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:53:15,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994810880] [2021-05-21 20:53:15,042 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:53:15,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:15,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:53:15,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:53:15,359 INFO L87 Difference]: Start difference. First operand 23826 states and 82836 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:15,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:15,640 INFO L93 Difference]: Finished difference Result 36259 states and 121650 transitions. [2021-05-21 20:53:15,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:53:15,641 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 [2021-05-21 20:53:15,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:15,704 INFO L225 Difference]: With dead ends: 36259 [2021-05-21 20:53:15,705 INFO L226 Difference]: Without dead ends: 35323 [2021-05-21 20:53:15,705 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 43.6ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:53:15,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35323 states. [2021-05-21 20:53:16,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35323 to 21699. [2021-05-21 20:53:16,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21699 states, 21698 states have (on average 3.39409162134759) internal successors, (73645), 21698 states have internal predecessors, (73645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:16,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21699 states to 21699 states and 73645 transitions. [2021-05-21 20:53:16,158 INFO L78 Accepts]: Start accepts. Automaton has 21699 states and 73645 transitions. Word has length 39 [2021-05-21 20:53:16,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:16,158 INFO L482 AbstractCegarLoop]: Abstraction has 21699 states and 73645 transitions. [2021-05-21 20:53:16,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:16,158 INFO L276 IsEmpty]: Start isEmpty. Operand 21699 states and 73645 transitions. [2021-05-21 20:53:16,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:16,188 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:16,188 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:16,189 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-05-21 20:53:16,189 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:16,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:16,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1489406878, now seen corresponding path program 21 times [2021-05-21 20:53:16,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:16,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461462545] [2021-05-21 20:53:16,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:16,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:16,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:16,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461462545] [2021-05-21 20:53:16,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461462545] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:16,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:16,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-21 20:53:16,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719465753] [2021-05-21 20:53:16,225 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 20:53:16,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:16,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 20:53:16,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-21 20:53:16,225 INFO L87 Difference]: Start difference. First operand 21699 states and 73645 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:16,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:16,456 INFO L93 Difference]: Finished difference Result 34469 states and 114405 transitions. [2021-05-21 20:53:16,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-21 20:53:16,456 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 [2021-05-21 20:53:16,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:16,790 INFO L225 Difference]: With dead ends: 34469 [2021-05-21 20:53:16,790 INFO L226 Difference]: Without dead ends: 34285 [2021-05-21 20:53:16,791 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.2ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:53:16,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34285 states. [2021-05-21 20:53:17,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34285 to 20585. [2021-05-21 20:53:17,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20585 states, 20584 states have (on average 3.3424504469490866) internal successors, (68801), 20584 states have internal predecessors, (68801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:17,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20585 states to 20585 states and 68801 transitions. [2021-05-21 20:53:17,176 INFO L78 Accepts]: Start accepts. Automaton has 20585 states and 68801 transitions. Word has length 39 [2021-05-21 20:53:17,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:17,176 INFO L482 AbstractCegarLoop]: Abstraction has 20585 states and 68801 transitions. [2021-05-21 20:53:17,176 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:17,176 INFO L276 IsEmpty]: Start isEmpty. Operand 20585 states and 68801 transitions. [2021-05-21 20:53:17,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:17,207 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:17,207 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:17,207 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-05-21 20:53:17,207 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:17,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:17,207 INFO L82 PathProgramCache]: Analyzing trace with hash 921984860, now seen corresponding path program 22 times [2021-05-21 20:53:17,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:17,207 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981548386] [2021-05-21 20:53:17,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:17,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:17,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:17,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981548386] [2021-05-21 20:53:17,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981548386] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:17,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:17,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:53:17,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884228764] [2021-05-21 20:53:17,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:53:17,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:17,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:53:17,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:53:17,248 INFO L87 Difference]: Start difference. First operand 20585 states and 68801 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:17,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:17,533 INFO L93 Difference]: Finished difference Result 35148 states and 115453 transitions. [2021-05-21 20:53:17,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:53:17,534 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 [2021-05-21 20:53:17,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:17,593 INFO L225 Difference]: With dead ends: 35148 [2021-05-21 20:53:17,593 INFO L226 Difference]: Without dead ends: 34004 [2021-05-21 20:53:17,593 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 37.0ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:53:17,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34004 states. [2021-05-21 20:53:18,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34004 to 18802. [2021-05-21 20:53:18,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18802 states, 18801 states have (on average 3.3137067177277806) internal successors, (62301), 18801 states have internal predecessors, (62301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:18,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18802 states to 18802 states and 62301 transitions. [2021-05-21 20:53:18,136 INFO L78 Accepts]: Start accepts. Automaton has 18802 states and 62301 transitions. Word has length 39 [2021-05-21 20:53:18,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:18,136 INFO L482 AbstractCegarLoop]: Abstraction has 18802 states and 62301 transitions. [2021-05-21 20:53:18,136 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:18,136 INFO L276 IsEmpty]: Start isEmpty. Operand 18802 states and 62301 transitions. [2021-05-21 20:53:18,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:18,160 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:18,160 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:18,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-05-21 20:53:18,161 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:18,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:18,161 INFO L82 PathProgramCache]: Analyzing trace with hash 84428698, now seen corresponding path program 23 times [2021-05-21 20:53:18,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:18,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775285050] [2021-05-21 20:53:18,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:18,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:18,199 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:18,199 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775285050] [2021-05-21 20:53:18,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775285050] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:18,199 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:18,199 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:53:18,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730382040] [2021-05-21 20:53:18,199 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:53:18,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:18,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:53:18,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:53:18,200 INFO L87 Difference]: Start difference. First operand 18802 states and 62301 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:18,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:18,472 INFO L93 Difference]: Finished difference Result 30242 states and 99222 transitions. [2021-05-21 20:53:18,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:53:18,472 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 [2021-05-21 20:53:18,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:18,527 INFO L225 Difference]: With dead ends: 30242 [2021-05-21 20:53:18,527 INFO L226 Difference]: Without dead ends: 30074 [2021-05-21 20:53:18,527 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 32.1ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:53:18,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30074 states. [2021-05-21 20:53:18,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30074 to 18728. [2021-05-21 20:53:18,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18728 states, 18727 states have (on average 3.3072035029636355) internal successors, (61934), 18727 states have internal predecessors, (61934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:18,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18728 states to 18728 states and 61934 transitions. [2021-05-21 20:53:18,891 INFO L78 Accepts]: Start accepts. Automaton has 18728 states and 61934 transitions. Word has length 39 [2021-05-21 20:53:18,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:18,891 INFO L482 AbstractCegarLoop]: Abstraction has 18728 states and 61934 transitions. [2021-05-21 20:53:18,891 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:18,891 INFO L276 IsEmpty]: Start isEmpty. Operand 18728 states and 61934 transitions. [2021-05-21 20:53:18,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:18,916 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:18,916 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:18,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-05-21 20:53:18,916 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:18,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:18,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1685327770, now seen corresponding path program 24 times [2021-05-21 20:53:18,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:18,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897795121] [2021-05-21 20:53:18,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:18,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:18,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:18,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897795121] [2021-05-21 20:53:18,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897795121] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:18,967 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:18,967 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:53:18,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034217225] [2021-05-21 20:53:18,967 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:53:18,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:18,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:53:18,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:53:18,968 INFO L87 Difference]: Start difference. First operand 18728 states and 61934 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:19,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:19,393 INFO L93 Difference]: Finished difference Result 29724 states and 97345 transitions. [2021-05-21 20:53:19,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:53:19,400 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 [2021-05-21 20:53:19,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:19,452 INFO L225 Difference]: With dead ends: 29724 [2021-05-21 20:53:19,452 INFO L226 Difference]: Without dead ends: 29232 [2021-05-21 20:53:19,452 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 53.9ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-05-21 20:53:19,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29232 states. [2021-05-21 20:53:19,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29232 to 18276. [2021-05-21 20:53:19,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18276 states, 18275 states have (on average 3.3015047879616963) internal successors, (60335), 18275 states have internal predecessors, (60335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:19,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18276 states to 18276 states and 60335 transitions. [2021-05-21 20:53:19,843 INFO L78 Accepts]: Start accepts. Automaton has 18276 states and 60335 transitions. Word has length 39 [2021-05-21 20:53:19,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:19,843 INFO L482 AbstractCegarLoop]: Abstraction has 18276 states and 60335 transitions. [2021-05-21 20:53:19,843 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:19,843 INFO L276 IsEmpty]: Start isEmpty. Operand 18276 states and 60335 transitions. [2021-05-21 20:53:19,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:19,866 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:19,866 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:19,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-05-21 20:53:19,867 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:19,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:19,867 INFO L82 PathProgramCache]: Analyzing trace with hash 6385336, now seen corresponding path program 25 times [2021-05-21 20:53:19,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:19,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554498329] [2021-05-21 20:53:19,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:19,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:19,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:19,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554498329] [2021-05-21 20:53:19,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554498329] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:19,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:19,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:53:19,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258188312] [2021-05-21 20:53:19,924 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:53:19,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:19,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:53:19,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:53:19,925 INFO L87 Difference]: Start difference. First operand 18276 states and 60335 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:20,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:20,246 INFO L93 Difference]: Finished difference Result 29259 states and 95348 transitions. [2021-05-21 20:53:20,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 20:53:20,246 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 [2021-05-21 20:53:20,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:20,297 INFO L225 Difference]: With dead ends: 29259 [2021-05-21 20:53:20,297 INFO L226 Difference]: Without dead ends: 28821 [2021-05-21 20:53:20,297 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 72.8ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-05-21 20:53:20,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28821 states. [2021-05-21 20:53:20,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28821 to 18412. [2021-05-21 20:53:20,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18412 states, 18411 states have (on average 3.280647439031014) internal successors, (60400), 18411 states have internal predecessors, (60400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:20,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18412 states to 18412 states and 60400 transitions. [2021-05-21 20:53:20,743 INFO L78 Accepts]: Start accepts. Automaton has 18412 states and 60400 transitions. Word has length 39 [2021-05-21 20:53:20,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:20,743 INFO L482 AbstractCegarLoop]: Abstraction has 18412 states and 60400 transitions. [2021-05-21 20:53:20,743 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:20,743 INFO L276 IsEmpty]: Start isEmpty. Operand 18412 states and 60400 transitions. [2021-05-21 20:53:20,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:20,767 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:20,767 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:20,767 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-05-21 20:53:20,767 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:20,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:20,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1165798022, now seen corresponding path program 26 times [2021-05-21 20:53:20,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:20,768 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085803329] [2021-05-21 20:53:20,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:20,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:20,806 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:20,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085803329] [2021-05-21 20:53:20,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085803329] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:20,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:20,806 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:53:20,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355274915] [2021-05-21 20:53:20,807 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:53:20,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:20,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:53:20,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:53:20,807 INFO L87 Difference]: Start difference. First operand 18412 states and 60400 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:21,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:21,043 INFO L93 Difference]: Finished difference Result 30084 states and 97312 transitions. [2021-05-21 20:53:21,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:53:21,043 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 [2021-05-21 20:53:21,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:21,093 INFO L225 Difference]: With dead ends: 30084 [2021-05-21 20:53:21,094 INFO L226 Difference]: Without dead ends: 29828 [2021-05-21 20:53:21,094 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 30.0ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:53:21,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29828 states. [2021-05-21 20:53:21,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29828 to 18388. [2021-05-21 20:53:21,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18388 states, 18387 states have (on average 3.2692663294719093) internal successors, (60112), 18387 states have internal predecessors, (60112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:21,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18388 states to 18388 states and 60112 transitions. [2021-05-21 20:53:21,435 INFO L78 Accepts]: Start accepts. Automaton has 18388 states and 60112 transitions. Word has length 39 [2021-05-21 20:53:21,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:21,435 INFO L482 AbstractCegarLoop]: Abstraction has 18388 states and 60112 transitions. [2021-05-21 20:53:21,435 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:21,435 INFO L276 IsEmpty]: Start isEmpty. Operand 18388 states and 60112 transitions. [2021-05-21 20:53:21,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:21,458 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:21,458 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:21,458 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-05-21 20:53:21,459 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:21,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:21,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1239867770, now seen corresponding path program 27 times [2021-05-21 20:53:21,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:21,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88414253] [2021-05-21 20:53:21,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:21,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:21,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:21,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88414253] [2021-05-21 20:53:21,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88414253] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:21,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:21,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:53:21,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569799896] [2021-05-21 20:53:21,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:53:21,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:21,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:53:21,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:53:21,502 INFO L87 Difference]: Start difference. First operand 18388 states and 60112 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:21,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:21,896 INFO L93 Difference]: Finished difference Result 29768 states and 96152 transitions. [2021-05-21 20:53:21,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:53:21,896 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 [2021-05-21 20:53:21,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:21,946 INFO L225 Difference]: With dead ends: 29768 [2021-05-21 20:53:21,946 INFO L226 Difference]: Without dead ends: 28672 [2021-05-21 20:53:21,946 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 39.4ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-05-21 20:53:22,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28672 states. [2021-05-21 20:53:22,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28672 to 17734. [2021-05-21 20:53:22,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17734 states, 17733 states have (on average 3.2457564991823156) internal successors, (57557), 17733 states have internal predecessors, (57557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:22,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17734 states to 17734 states and 57557 transitions. [2021-05-21 20:53:22,268 INFO L78 Accepts]: Start accepts. Automaton has 17734 states and 57557 transitions. Word has length 39 [2021-05-21 20:53:22,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:22,268 INFO L482 AbstractCegarLoop]: Abstraction has 17734 states and 57557 transitions. [2021-05-21 20:53:22,268 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:22,268 INFO L276 IsEmpty]: Start isEmpty. Operand 17734 states and 57557 transitions. [2021-05-21 20:53:22,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:22,290 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:22,290 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:22,290 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-05-21 20:53:22,290 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:22,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:22,291 INFO L82 PathProgramCache]: Analyzing trace with hash 492882072, now seen corresponding path program 28 times [2021-05-21 20:53:22,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:22,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506990291] [2021-05-21 20:53:22,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:22,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:22,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:22,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506990291] [2021-05-21 20:53:22,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506990291] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:22,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:22,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:53:22,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655241859] [2021-05-21 20:53:22,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:53:22,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:22,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:53:22,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:53:22,348 INFO L87 Difference]: Start difference. First operand 17734 states and 57557 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:22,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:22,790 INFO L93 Difference]: Finished difference Result 28772 states and 92301 transitions. [2021-05-21 20:53:22,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 20:53:22,790 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 [2021-05-21 20:53:22,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:22,855 INFO L225 Difference]: With dead ends: 28772 [2021-05-21 20:53:22,855 INFO L226 Difference]: Without dead ends: 27282 [2021-05-21 20:53:22,855 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 78.6ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-05-21 20:53:22,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27282 states. [2021-05-21 20:53:23,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27282 to 16786. [2021-05-21 20:53:23,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16786 states, 16785 states have (on average 3.2374739350610664) internal successors, (54341), 16785 states have internal predecessors, (54341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:23,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16786 states to 16786 states and 54341 transitions. [2021-05-21 20:53:23,479 INFO L78 Accepts]: Start accepts. Automaton has 16786 states and 54341 transitions. Word has length 39 [2021-05-21 20:53:23,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:23,479 INFO L482 AbstractCegarLoop]: Abstraction has 16786 states and 54341 transitions. [2021-05-21 20:53:23,479 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:23,479 INFO L276 IsEmpty]: Start isEmpty. Operand 16786 states and 54341 transitions. [2021-05-21 20:53:23,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:23,500 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:23,500 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:23,500 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-05-21 20:53:23,500 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:23,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:23,501 INFO L82 PathProgramCache]: Analyzing trace with hash -652913060, now seen corresponding path program 29 times [2021-05-21 20:53:23,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:23,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707908616] [2021-05-21 20:53:23,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:23,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:23,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:23,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707908616] [2021-05-21 20:53:23,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707908616] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:23,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:23,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:53:23,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104716210] [2021-05-21 20:53:23,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:53:23,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:23,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:53:23,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:53:23,556 INFO L87 Difference]: Start difference. First operand 16786 states and 54341 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:23,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:23,959 INFO L93 Difference]: Finished difference Result 27715 states and 88963 transitions. [2021-05-21 20:53:23,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 20:53:23,959 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 [2021-05-21 20:53:23,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:24,005 INFO L225 Difference]: With dead ends: 27715 [2021-05-21 20:53:24,005 INFO L226 Difference]: Without dead ends: 26709 [2021-05-21 20:53:24,006 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 70.5ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-05-21 20:53:24,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26709 states. [2021-05-21 20:53:24,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26709 to 16048. [2021-05-21 20:53:24,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16048 states, 16047 states have (on average 3.2265220913566397) internal successors, (51776), 16047 states have internal predecessors, (51776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:24,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16048 states to 16048 states and 51776 transitions. [2021-05-21 20:53:24,310 INFO L78 Accepts]: Start accepts. Automaton has 16048 states and 51776 transitions. Word has length 39 [2021-05-21 20:53:24,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:24,310 INFO L482 AbstractCegarLoop]: Abstraction has 16048 states and 51776 transitions. [2021-05-21 20:53:24,310 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:24,310 INFO L276 IsEmpty]: Start isEmpty. Operand 16048 states and 51776 transitions. [2021-05-21 20:53:24,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:24,331 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:24,331 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:24,331 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-05-21 20:53:24,331 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:24,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:24,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1990404212, now seen corresponding path program 30 times [2021-05-21 20:53:24,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:24,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876890172] [2021-05-21 20:53:24,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:24,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:24,369 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:24,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876890172] [2021-05-21 20:53:24,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876890172] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:24,369 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:24,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-21 20:53:24,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391048784] [2021-05-21 20:53:24,370 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 20:53:24,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:24,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 20:53:24,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-21 20:53:24,370 INFO L87 Difference]: Start difference. First operand 16048 states and 51776 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:24,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:24,519 INFO L93 Difference]: Finished difference Result 26537 states and 84145 transitions. [2021-05-21 20:53:24,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-21 20:53:24,520 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 [2021-05-21 20:53:24,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:24,563 INFO L225 Difference]: With dead ends: 26537 [2021-05-21 20:53:24,563 INFO L226 Difference]: Without dead ends: 26193 [2021-05-21 20:53:24,563 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.1ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:53:24,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26193 states. [2021-05-21 20:53:25,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26193 to 15396. [2021-05-21 20:53:25,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15396 states, 15395 states have (on average 3.2042871062033127) internal successors, (49330), 15395 states have internal predecessors, (49330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:25,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15396 states to 15396 states and 49330 transitions. [2021-05-21 20:53:25,065 INFO L78 Accepts]: Start accepts. Automaton has 15396 states and 49330 transitions. Word has length 39 [2021-05-21 20:53:25,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:25,065 INFO L482 AbstractCegarLoop]: Abstraction has 15396 states and 49330 transitions. [2021-05-21 20:53:25,065 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:25,065 INFO L276 IsEmpty]: Start isEmpty. Operand 15396 states and 49330 transitions. [2021-05-21 20:53:25,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:25,086 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:25,086 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:25,086 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-05-21 20:53:25,086 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:25,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:25,086 INFO L82 PathProgramCache]: Analyzing trace with hash -486861366, now seen corresponding path program 31 times [2021-05-21 20:53:25,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:25,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916623822] [2021-05-21 20:53:25,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:25,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:25,125 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:25,125 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916623822] [2021-05-21 20:53:25,125 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916623822] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:25,125 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:25,125 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:53:25,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884525798] [2021-05-21 20:53:25,126 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:53:25,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:25,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:53:25,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:53:25,126 INFO L87 Difference]: Start difference. First operand 15396 states and 49330 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:25,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:25,377 INFO L93 Difference]: Finished difference Result 19582 states and 58220 transitions. [2021-05-21 20:53:25,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:53:25,377 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 [2021-05-21 20:53:25,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:25,413 INFO L225 Difference]: With dead ends: 19582 [2021-05-21 20:53:25,413 INFO L226 Difference]: Without dead ends: 18047 [2021-05-21 20:53:25,413 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 38.5ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:53:25,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18047 states. [2021-05-21 20:53:25,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18047 to 10863. [2021-05-21 20:53:25,642 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) [2021-05-21 20:53:25,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10863 states to 10863 states and 32909 transitions. [2021-05-21 20:53:25,662 INFO L78 Accepts]: Start accepts. Automaton has 10863 states and 32909 transitions. Word has length 39 [2021-05-21 20:53:25,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:25,662 INFO L482 AbstractCegarLoop]: Abstraction has 10863 states and 32909 transitions. [2021-05-21 20:53:25,662 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:25,662 INFO L276 IsEmpty]: Start isEmpty. Operand 10863 states and 32909 transitions. [2021-05-21 20:53:25,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:25,675 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:25,675 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:25,676 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-05-21 20:53:25,676 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:25,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:25,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1712472694, now seen corresponding path program 32 times [2021-05-21 20:53:25,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:25,676 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874593463] [2021-05-21 20:53:25,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:25,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:25,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:25,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874593463] [2021-05-21 20:53:25,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874593463] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:25,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:25,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:53:25,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574550389] [2021-05-21 20:53:25,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:53:25,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:25,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:53:25,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:53:25,722 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) [2021-05-21 20:53:25,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:25,957 INFO L93 Difference]: Finished difference Result 16060 states and 47771 transitions. [2021-05-21 20:53:25,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:53:25,973 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 [2021-05-21 20:53:25,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:25,997 INFO L225 Difference]: With dead ends: 16060 [2021-05-21 20:53:25,998 INFO L226 Difference]: Without dead ends: 15380 [2021-05-21 20:53:25,998 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 45.0ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-05-21 20:53:26,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15380 states. [2021-05-21 20:53:26,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15380 to 10289. [2021-05-21 20:53:26,159 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) [2021-05-21 20:53:26,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10289 states to 10289 states and 30970 transitions. [2021-05-21 20:53:26,178 INFO L78 Accepts]: Start accepts. Automaton has 10289 states and 30970 transitions. Word has length 39 [2021-05-21 20:53:26,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:26,178 INFO L482 AbstractCegarLoop]: Abstraction has 10289 states and 30970 transitions. [2021-05-21 20:53:26,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:26,178 INFO L276 IsEmpty]: Start isEmpty. Operand 10289 states and 30970 transitions. [2021-05-21 20:53:26,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:26,191 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:26,192 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:26,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-05-21 20:53:26,192 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:26,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:26,192 INFO L82 PathProgramCache]: Analyzing trace with hash -12539988, now seen corresponding path program 33 times [2021-05-21 20:53:26,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:26,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341717010] [2021-05-21 20:53:26,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:26,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:26,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:26,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341717010] [2021-05-21 20:53:26,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341717010] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:26,237 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:26,237 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:53:26,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113062655] [2021-05-21 20:53:26,237 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:53:26,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:26,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:53:26,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:53:26,237 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) [2021-05-21 20:53:26,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:26,721 INFO L93 Difference]: Finished difference Result 14404 states and 42007 transitions. [2021-05-21 20:53:26,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 20:53:26,722 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 [2021-05-21 20:53:26,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:26,742 INFO L225 Difference]: With dead ends: 14404 [2021-05-21 20:53:26,742 INFO L226 Difference]: Without dead ends: 13806 [2021-05-21 20:53:26,743 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 66.6ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-05-21 20:53:26,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13806 states. [2021-05-21 20:53:26,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13806 to 9515. [2021-05-21 20:53:26,885 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) [2021-05-21 20:53:26,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9515 states to 9515 states and 28297 transitions. [2021-05-21 20:53:26,902 INFO L78 Accepts]: Start accepts. Automaton has 9515 states and 28297 transitions. Word has length 39 [2021-05-21 20:53:26,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:26,902 INFO L482 AbstractCegarLoop]: Abstraction has 9515 states and 28297 transitions. [2021-05-21 20:53:26,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:26,903 INFO L276 IsEmpty]: Start isEmpty. Operand 9515 states and 28297 transitions. [2021-05-21 20:53:26,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:26,914 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:26,914 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:26,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-05-21 20:53:26,914 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:26,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:26,915 INFO L82 PathProgramCache]: Analyzing trace with hash -467836166, now seen corresponding path program 34 times [2021-05-21 20:53:26,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:26,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627134773] [2021-05-21 20:53:26,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:26,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:26,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:26,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627134773] [2021-05-21 20:53:26,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627134773] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:26,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:26,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:53:26,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042762689] [2021-05-21 20:53:26,957 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:53:26,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:26,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:53:26,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:53:26,959 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) [2021-05-21 20:53:27,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:27,201 INFO L93 Difference]: Finished difference Result 14734 states and 43845 transitions. [2021-05-21 20:53:27,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:53:27,202 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 [2021-05-21 20:53:27,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:27,225 INFO L225 Difference]: With dead ends: 14734 [2021-05-21 20:53:27,225 INFO L226 Difference]: Without dead ends: 14686 [2021-05-21 20:53:27,225 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 38.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:53:27,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14686 states. [2021-05-21 20:53:27,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14686 to 9376. [2021-05-21 20:53:27,373 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) [2021-05-21 20:53:27,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9376 states to 9376 states and 27782 transitions. [2021-05-21 20:53:27,390 INFO L78 Accepts]: Start accepts. Automaton has 9376 states and 27782 transitions. Word has length 39 [2021-05-21 20:53:27,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:27,390 INFO L482 AbstractCegarLoop]: Abstraction has 9376 states and 27782 transitions. [2021-05-21 20:53:27,390 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:27,390 INFO L276 IsEmpty]: Start isEmpty. Operand 9376 states and 27782 transitions. [2021-05-21 20:53:27,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:27,401 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:27,401 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:27,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-05-21 20:53:27,401 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:27,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:27,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1133062906, now seen corresponding path program 35 times [2021-05-21 20:53:27,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:27,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273081992] [2021-05-21 20:53:27,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:27,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:27,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:27,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273081992] [2021-05-21 20:53:27,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273081992] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:27,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:27,449 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:53:27,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618407009] [2021-05-21 20:53:27,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:53:27,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:27,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:53:27,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:53:27,450 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) [2021-05-21 20:53:27,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:27,728 INFO L93 Difference]: Finished difference Result 14599 states and 43322 transitions. [2021-05-21 20:53:27,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-21 20:53:27,729 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 [2021-05-21 20:53:27,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:27,750 INFO L225 Difference]: With dead ends: 14599 [2021-05-21 20:53:27,750 INFO L226 Difference]: Without dead ends: 14479 [2021-05-21 20:53:27,750 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 57.3ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-05-21 20:53:27,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14479 states. [2021-05-21 20:53:27,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14479 to 9268. [2021-05-21 20:53:27,888 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) [2021-05-21 20:53:27,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9268 states to 9268 states and 27416 transitions. [2021-05-21 20:53:27,904 INFO L78 Accepts]: Start accepts. Automaton has 9268 states and 27416 transitions. Word has length 39 [2021-05-21 20:53:27,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:27,904 INFO L482 AbstractCegarLoop]: Abstraction has 9268 states and 27416 transitions. [2021-05-21 20:53:27,905 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:27,905 INFO L276 IsEmpty]: Start isEmpty. Operand 9268 states and 27416 transitions. [2021-05-21 20:53:27,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:27,915 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:27,915 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:27,915 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-05-21 20:53:27,915 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:27,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:27,916 INFO L82 PathProgramCache]: Analyzing trace with hash -545879528, now seen corresponding path program 36 times [2021-05-21 20:53:27,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:27,916 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600701385] [2021-05-21 20:53:27,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:27,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:27,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:27,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600701385] [2021-05-21 20:53:27,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600701385] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:27,968 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:27,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:53:27,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907318442] [2021-05-21 20:53:27,969 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:53:27,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:27,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:53:27,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:53:27,969 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) [2021-05-21 20:53:28,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:28,430 INFO L93 Difference]: Finished difference Result 14208 states and 42268 transitions. [2021-05-21 20:53:28,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 20:53:28,431 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 [2021-05-21 20:53:28,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:28,458 INFO L225 Difference]: With dead ends: 14208 [2021-05-21 20:53:28,459 INFO L226 Difference]: Without dead ends: 14016 [2021-05-21 20:53:28,459 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 153.9ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-05-21 20:53:28,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14016 states. [2021-05-21 20:53:28,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14016 to 9164. [2021-05-21 20:53:28,647 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) [2021-05-21 20:53:28,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9164 states to 9164 states and 27130 transitions. [2021-05-21 20:53:28,670 INFO L78 Accepts]: Start accepts. Automaton has 9164 states and 27130 transitions. Word has length 39 [2021-05-21 20:53:28,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:28,670 INFO L482 AbstractCegarLoop]: Abstraction has 9164 states and 27130 transitions. [2021-05-21 20:53:28,670 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:28,670 INFO L276 IsEmpty]: Start isEmpty. Operand 9164 states and 27130 transitions. [2021-05-21 20:53:28,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:28,685 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:28,685 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:28,685 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-05-21 20:53:28,685 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:28,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:28,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1948403812, now seen corresponding path program 37 times [2021-05-21 20:53:28,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:28,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954297452] [2021-05-21 20:53:28,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:28,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:28,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:28,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954297452] [2021-05-21 20:53:28,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954297452] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:28,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:28,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-21 20:53:28,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678429590] [2021-05-21 20:53:28,752 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-21 20:53:28,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:28,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-21 20:53:28,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:53:28,752 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) [2021-05-21 20:53:29,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:29,114 INFO L93 Difference]: Finished difference Result 14134 states and 42012 transitions. [2021-05-21 20:53:29,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-21 20:53:29,115 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 [2021-05-21 20:53:29,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:29,137 INFO L225 Difference]: With dead ends: 14134 [2021-05-21 20:53:29,137 INFO L226 Difference]: Without dead ends: 13966 [2021-05-21 20:53:29,137 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 105.7ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-05-21 20:53:29,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13966 states. [2021-05-21 20:53:29,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13966 to 9158. [2021-05-21 20:53:29,283 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) [2021-05-21 20:53:29,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9158 states to 9158 states and 27094 transitions. [2021-05-21 20:53:29,299 INFO L78 Accepts]: Start accepts. Automaton has 9158 states and 27094 transitions. Word has length 39 [2021-05-21 20:53:29,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:29,299 INFO L482 AbstractCegarLoop]: Abstraction has 9158 states and 27094 transitions. [2021-05-21 20:53:29,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:29,299 INFO L276 IsEmpty]: Start isEmpty. Operand 9158 states and 27094 transitions. [2021-05-21 20:53:29,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:29,311 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:29,311 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:29,311 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-05-21 20:53:29,311 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:29,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:29,311 INFO L82 PathProgramCache]: Analyzing trace with hash -426772262, now seen corresponding path program 38 times [2021-05-21 20:53:29,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:29,311 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636016456] [2021-05-21 20:53:29,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:29,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:29,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:29,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636016456] [2021-05-21 20:53:29,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636016456] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:29,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:29,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:53:29,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819530593] [2021-05-21 20:53:29,348 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:53:29,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:29,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:53:29,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:53:29,349 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) [2021-05-21 20:53:29,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:29,571 INFO L93 Difference]: Finished difference Result 14594 states and 43056 transitions. [2021-05-21 20:53:29,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:53:29,572 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 [2021-05-21 20:53:29,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:29,592 INFO L225 Difference]: With dead ends: 14594 [2021-05-21 20:53:29,593 INFO L226 Difference]: Without dead ends: 14466 [2021-05-21 20:53:29,593 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 38.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:53:29,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14466 states. [2021-05-21 20:53:29,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14466 to 9094. [2021-05-21 20:53:29,734 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) [2021-05-21 20:53:29,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9094 states to 9094 states and 26818 transitions. [2021-05-21 20:53:29,750 INFO L78 Accepts]: Start accepts. Automaton has 9094 states and 26818 transitions. Word has length 39 [2021-05-21 20:53:29,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:29,750 INFO L482 AbstractCegarLoop]: Abstraction has 9094 states and 26818 transitions. [2021-05-21 20:53:29,750 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:29,750 INFO L276 IsEmpty]: Start isEmpty. Operand 9094 states and 26818 transitions. [2021-05-21 20:53:29,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:29,761 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:29,761 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:29,761 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-05-21 20:53:29,761 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:29,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:29,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1978893530, now seen corresponding path program 39 times [2021-05-21 20:53:29,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:29,762 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390176550] [2021-05-21 20:53:29,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:29,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:29,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390176550] [2021-05-21 20:53:29,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390176550] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:29,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:29,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:53:29,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179138592] [2021-05-21 20:53:29,807 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:53:29,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:29,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:53:29,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:53:29,808 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) [2021-05-21 20:53:30,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:30,149 INFO L93 Difference]: Finished difference Result 14494 states and 42702 transitions. [2021-05-21 20:53:30,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-21 20:53:30,149 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 [2021-05-21 20:53:30,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:30,175 INFO L225 Difference]: With dead ends: 14494 [2021-05-21 20:53:30,175 INFO L226 Difference]: Without dead ends: 14022 [2021-05-21 20:53:30,175 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 59.4ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-05-21 20:53:30,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14022 states. [2021-05-21 20:53:30,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14022 to 8890. [2021-05-21 20:53:30,356 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) [2021-05-21 20:53:30,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8890 states to 8890 states and 26110 transitions. [2021-05-21 20:53:30,371 INFO L78 Accepts]: Start accepts. Automaton has 8890 states and 26110 transitions. Word has length 39 [2021-05-21 20:53:30,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:30,372 INFO L482 AbstractCegarLoop]: Abstraction has 8890 states and 26110 transitions. [2021-05-21 20:53:30,372 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:30,372 INFO L276 IsEmpty]: Start isEmpty. Operand 8890 states and 26110 transitions. [2021-05-21 20:53:30,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:30,382 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:30,382 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:30,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-05-21 20:53:30,382 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:30,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:30,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1231907832, now seen corresponding path program 40 times [2021-05-21 20:53:30,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:30,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632674410] [2021-05-21 20:53:30,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:30,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:30,432 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:30,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632674410] [2021-05-21 20:53:30,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632674410] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:30,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:30,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:53:30,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583550304] [2021-05-21 20:53:30,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:53:30,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:30,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:53:30,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:53:30,433 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) [2021-05-21 20:53:30,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:30,777 INFO L93 Difference]: Finished difference Result 14086 states and 41514 transitions. [2021-05-21 20:53:30,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 20:53:30,778 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 [2021-05-21 20:53:30,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:30,796 INFO L225 Difference]: With dead ends: 14086 [2021-05-21 20:53:30,796 INFO L226 Difference]: Without dead ends: 13386 [2021-05-21 20:53:30,797 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 72.5ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-05-21 20:53:30,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13386 states. [2021-05-21 20:53:30,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13386 to 8674. [2021-05-21 20:53:30,917 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) [2021-05-21 20:53:30,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8674 states to 8674 states and 25546 transitions. [2021-05-21 20:53:30,932 INFO L78 Accepts]: Start accepts. Automaton has 8674 states and 25546 transitions. Word has length 39 [2021-05-21 20:53:30,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:30,932 INFO L482 AbstractCegarLoop]: Abstraction has 8674 states and 25546 transitions. [2021-05-21 20:53:30,932 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:30,932 INFO L276 IsEmpty]: Start isEmpty. Operand 8674 states and 25546 transitions. [2021-05-21 20:53:30,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:30,943 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:30,943 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:30,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-05-21 20:53:30,943 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:30,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:30,943 INFO L82 PathProgramCache]: Analyzing trace with hash 64823676, now seen corresponding path program 41 times [2021-05-21 20:53:30,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:30,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477292405] [2021-05-21 20:53:30,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:30,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:30,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477292405] [2021-05-21 20:53:30,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477292405] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:30,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:30,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-21 20:53:30,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797048083] [2021-05-21 20:53:30,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-21 20:53:30,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:30,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-21 20:53:30,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:53:30,999 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) [2021-05-21 20:53:31,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:31,386 INFO L93 Difference]: Finished difference Result 13828 states and 40806 transitions. [2021-05-21 20:53:31,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-21 20:53:31,387 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 [2021-05-21 20:53:31,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:31,408 INFO L225 Difference]: With dead ends: 13828 [2021-05-21 20:53:31,408 INFO L226 Difference]: Without dead ends: 13182 [2021-05-21 20:53:31,409 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 113.2ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-05-21 20:53:31,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13182 states. [2021-05-21 20:53:31,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13182 to 8470. [2021-05-21 20:53:31,547 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) [2021-05-21 20:53:31,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8470 states to 8470 states and 25108 transitions. [2021-05-21 20:53:31,562 INFO L78 Accepts]: Start accepts. Automaton has 8470 states and 25108 transitions. Word has length 39 [2021-05-21 20:53:31,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:31,562 INFO L482 AbstractCegarLoop]: Abstraction has 8470 states and 25108 transitions. [2021-05-21 20:53:31,562 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:31,562 INFO L276 IsEmpty]: Start isEmpty. Operand 8470 states and 25108 transitions. [2021-05-21 20:53:31,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:31,572 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:31,572 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:31,572 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-05-21 20:53:31,573 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:31,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:31,573 INFO L82 PathProgramCache]: Analyzing trace with hash -695140544, now seen corresponding path program 42 times [2021-05-21 20:53:31,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:31,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360986009] [2021-05-21 20:53:31,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:31,630 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:31,630 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360986009] [2021-05-21 20:53:31,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360986009] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:31,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:31,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-21 20:53:31,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30101231] [2021-05-21 20:53:31,630 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-21 20:53:31,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:31,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-21 20:53:31,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:53:31,630 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) [2021-05-21 20:53:32,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:32,009 INFO L93 Difference]: Finished difference Result 13371 states and 39611 transitions. [2021-05-21 20:53:32,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-21 20:53:32,009 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 [2021-05-21 20:53:32,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:32,027 INFO L225 Difference]: With dead ends: 13371 [2021-05-21 20:53:32,027 INFO L226 Difference]: Without dead ends: 12735 [2021-05-21 20:53:32,027 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 100.6ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-05-21 20:53:32,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12735 states. [2021-05-21 20:53:32,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12735 to 7590. [2021-05-21 20:53:32,139 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) [2021-05-21 20:53:32,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7590 states to 7590 states and 22467 transitions. [2021-05-21 20:53:32,152 INFO L78 Accepts]: Start accepts. Automaton has 7590 states and 22467 transitions. Word has length 39 [2021-05-21 20:53:32,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:32,152 INFO L482 AbstractCegarLoop]: Abstraction has 7590 states and 22467 transitions. [2021-05-21 20:53:32,152 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:32,152 INFO L276 IsEmpty]: Start isEmpty. Operand 7590 states and 22467 transitions. [2021-05-21 20:53:32,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:32,161 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:32,161 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:32,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-05-21 20:53:32,161 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:32,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:32,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1794340302, now seen corresponding path program 43 times [2021-05-21 20:53:32,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:32,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201696185] [2021-05-21 20:53:32,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:32,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:32,203 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:32,203 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201696185] [2021-05-21 20:53:32,203 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201696185] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:32,203 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:32,204 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:53:32,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343862495] [2021-05-21 20:53:32,204 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:53:32,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:32,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:53:32,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:53:32,205 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) [2021-05-21 20:53:32,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:32,508 INFO L93 Difference]: Finished difference Result 12745 states and 37674 transitions. [2021-05-21 20:53:32,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-21 20:53:32,509 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 [2021-05-21 20:53:32,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:32,532 INFO L225 Difference]: With dead ends: 12745 [2021-05-21 20:53:32,533 INFO L226 Difference]: Without dead ends: 12601 [2021-05-21 20:53:32,533 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 55.1ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-05-21 20:53:32,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12601 states. [2021-05-21 20:53:32,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12601 to 7346. [2021-05-21 20:53:32,667 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) [2021-05-21 20:53:32,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7346 states to 7346 states and 21595 transitions. [2021-05-21 20:53:32,681 INFO L78 Accepts]: Start accepts. Automaton has 7346 states and 21595 transitions. Word has length 39 [2021-05-21 20:53:32,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:32,681 INFO L482 AbstractCegarLoop]: Abstraction has 7346 states and 21595 transitions. [2021-05-21 20:53:32,681 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:32,681 INFO L276 IsEmpty]: Start isEmpty. Operand 7346 states and 21595 transitions. [2021-05-21 20:53:32,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:32,691 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:32,691 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:32,691 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-05-21 20:53:32,691 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:32,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:32,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1613437490, now seen corresponding path program 44 times [2021-05-21 20:53:32,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:32,692 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113116082] [2021-05-21 20:53:32,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:32,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:32,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:32,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113116082] [2021-05-21 20:53:32,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113116082] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:32,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:32,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:53:32,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489645208] [2021-05-21 20:53:32,742 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:53:32,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:32,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:53:32,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:53:32,743 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) [2021-05-21 20:53:33,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:33,054 INFO L93 Difference]: Finished difference Result 11821 states and 34814 transitions. [2021-05-21 20:53:33,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 20:53:33,055 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 [2021-05-21 20:53:33,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:33,071 INFO L225 Difference]: With dead ends: 11821 [2021-05-21 20:53:33,071 INFO L226 Difference]: Without dead ends: 11629 [2021-05-21 20:53:33,071 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 69.7ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-05-21 20:53:33,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11629 states. [2021-05-21 20:53:33,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11629 to 7242. [2021-05-21 20:53:33,177 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) [2021-05-21 20:53:33,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7242 states to 7242 states and 21309 transitions. [2021-05-21 20:53:33,190 INFO L78 Accepts]: Start accepts. Automaton has 7242 states and 21309 transitions. Word has length 39 [2021-05-21 20:53:33,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:33,190 INFO L482 AbstractCegarLoop]: Abstraction has 7242 states and 21309 transitions. [2021-05-21 20:53:33,190 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:33,190 INFO L276 IsEmpty]: Start isEmpty. Operand 7242 states and 21309 transitions. [2021-05-21 20:53:33,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:33,199 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:33,199 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:33,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-05-21 20:53:33,200 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:33,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:33,200 INFO L82 PathProgramCache]: Analyzing trace with hash -798629012, now seen corresponding path program 45 times [2021-05-21 20:53:33,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:33,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600064644] [2021-05-21 20:53:33,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:33,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:33,260 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:33,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600064644] [2021-05-21 20:53:33,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600064644] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:33,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:33,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-21 20:53:33,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088355985] [2021-05-21 20:53:33,261 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-21 20:53:33,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:33,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-21 20:53:33,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:53:33,261 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) [2021-05-21 20:53:33,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:33,652 INFO L93 Difference]: Finished difference Result 11315 states and 33296 transitions. [2021-05-21 20:53:33,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-21 20:53:33,653 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 [2021-05-21 20:53:33,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:33,668 INFO L225 Difference]: With dead ends: 11315 [2021-05-21 20:53:33,668 INFO L226 Difference]: Without dead ends: 11099 [2021-05-21 20:53:33,669 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 114.2ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-05-21 20:53:33,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11099 states. [2021-05-21 20:53:33,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11099 to 7008. [2021-05-21 20:53:33,778 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) [2021-05-21 20:53:33,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7008 states to 7008 states and 20842 transitions. [2021-05-21 20:53:33,790 INFO L78 Accepts]: Start accepts. Automaton has 7008 states and 20842 transitions. Word has length 39 [2021-05-21 20:53:33,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:33,791 INFO L482 AbstractCegarLoop]: Abstraction has 7008 states and 20842 transitions. [2021-05-21 20:53:33,791 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:33,791 INFO L276 IsEmpty]: Start isEmpty. Operand 7008 states and 20842 transitions. [2021-05-21 20:53:33,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:33,799 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:33,799 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:33,799 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-05-21 20:53:33,799 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:33,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:33,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1518942532, now seen corresponding path program 46 times [2021-05-21 20:53:33,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:33,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684261873] [2021-05-21 20:53:33,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:33,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:33,824 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:33,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684261873] [2021-05-21 20:53:33,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684261873] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:33,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:33,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-21 20:53:33,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609152882] [2021-05-21 20:53:33,825 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 20:53:33,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:33,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 20:53:33,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-21 20:53:33,825 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) [2021-05-21 20:53:33,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:33,940 INFO L93 Difference]: Finished difference Result 9444 states and 26929 transitions. [2021-05-21 20:53:33,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-21 20:53:33,940 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 [2021-05-21 20:53:33,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:33,956 INFO L225 Difference]: With dead ends: 9444 [2021-05-21 20:53:33,956 INFO L226 Difference]: Without dead ends: 8824 [2021-05-21 20:53:33,957 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.7ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:53:33,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8824 states. [2021-05-21 20:53:34,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8824 to 4125. [2021-05-21 20:53:34,043 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) [2021-05-21 20:53:34,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4125 states to 4125 states and 11994 transitions. [2021-05-21 20:53:34,050 INFO L78 Accepts]: Start accepts. Automaton has 4125 states and 11994 transitions. Word has length 39 [2021-05-21 20:53:34,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:34,050 INFO L482 AbstractCegarLoop]: Abstraction has 4125 states and 11994 transitions. [2021-05-21 20:53:34,050 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:34,050 INFO L276 IsEmpty]: Start isEmpty. Operand 4125 states and 11994 transitions. [2021-05-21 20:53:34,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:34,055 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:34,055 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:34,055 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-05-21 20:53:34,055 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:34,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:34,056 INFO L82 PathProgramCache]: Analyzing trace with hash -236999486, now seen corresponding path program 47 times [2021-05-21 20:53:34,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:34,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135995960] [2021-05-21 20:53:34,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:34,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:34,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135995960] [2021-05-21 20:53:34,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135995960] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:34,095 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:34,095 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:53:34,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904611427] [2021-05-21 20:53:34,096 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:53:34,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:34,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:53:34,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:53:34,096 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) [2021-05-21 20:53:34,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:34,248 INFO L93 Difference]: Finished difference Result 6107 states and 16719 transitions. [2021-05-21 20:53:34,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:53:34,249 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 [2021-05-21 20:53:34,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:34,255 INFO L225 Difference]: With dead ends: 6107 [2021-05-21 20:53:34,255 INFO L226 Difference]: Without dead ends: 4693 [2021-05-21 20:53:34,255 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 38.8ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:53:34,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4693 states. [2021-05-21 20:53:34,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4693 to 2542. [2021-05-21 20:53:34,293 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) [2021-05-21 20:53:34,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 7081 transitions. [2021-05-21 20:53:34,296 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 7081 transitions. Word has length 39 [2021-05-21 20:53:34,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:34,296 INFO L482 AbstractCegarLoop]: Abstraction has 2542 states and 7081 transitions. [2021-05-21 20:53:34,297 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:34,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 7081 transitions. [2021-05-21 20:53:34,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:34,299 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:34,299 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:34,299 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-05-21 20:53:34,299 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:34,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:34,300 INFO L82 PathProgramCache]: Analyzing trace with hash -634778652, now seen corresponding path program 48 times [2021-05-21 20:53:34,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:34,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610115148] [2021-05-21 20:53:34,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:34,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:34,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:34,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610115148] [2021-05-21 20:53:34,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610115148] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:34,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:34,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:53:34,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468366261] [2021-05-21 20:53:34,362 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:53:34,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:34,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:53:34,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:53:34,362 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) [2021-05-21 20:53:34,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:34,561 INFO L93 Difference]: Finished difference Result 1862 states and 4307 transitions. [2021-05-21 20:53:34,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 20:53:34,561 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 [2021-05-21 20:53:34,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:34,562 INFO L225 Difference]: With dead ends: 1862 [2021-05-21 20:53:34,562 INFO L226 Difference]: Without dead ends: 648 [2021-05-21 20:53:34,562 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 77.4ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-05-21 20:53:34,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-05-21 20:53:34,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 456. [2021-05-21 20:53:34,567 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) [2021-05-21 20:53:34,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1107 transitions. [2021-05-21 20:53:34,568 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1107 transitions. Word has length 39 [2021-05-21 20:53:34,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:34,568 INFO L482 AbstractCegarLoop]: Abstraction has 456 states and 1107 transitions. [2021-05-21 20:53:34,568 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:34,568 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1107 transitions. [2021-05-21 20:53:34,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 20:53:34,568 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:34,568 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:53:34,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-05-21 20:53:34,568 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:53:34,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:34,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1819342244, now seen corresponding path program 49 times [2021-05-21 20:53:34,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:34,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957740178] [2021-05-21 20:53:34,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:34,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:34,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:34,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957740178] [2021-05-21 20:53:34,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957740178] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:34,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:34,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-21 20:53:34,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799863175] [2021-05-21 20:53:34,623 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-21 20:53:34,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:34,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-21 20:53:34,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:53:34,623 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) [2021-05-21 20:53:34,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:34,779 INFO L93 Difference]: Finished difference Result 391 states and 811 transitions. [2021-05-21 20:53:34,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-21 20:53:34,780 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 [2021-05-21 20:53:34,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:34,780 INFO L225 Difference]: With dead ends: 391 [2021-05-21 20:53:34,780 INFO L226 Difference]: Without dead ends: 0 [2021-05-21 20:53:34,780 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 81.9ms TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-05-21 20:53:34,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-21 20:53:34,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-21 20:53:34,780 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) [2021-05-21 20:53:34,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-21 20:53:34,781 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2021-05-21 20:53:34,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:34,781 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-21 20:53:34,781 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:53:34,781 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-21 20:53:34,781 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 20:53:34,781 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-05-21 20:53:34,783 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 20:53:34,785 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 08:53:34 BasicIcfg [2021-05-21 20:53:34,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 20:53:34,785 INFO L168 Benchmark]: Toolchain (without parser) took 49695.74 ms. Allocated memory was 369.1 MB in the beginning and 15.0 GB in the end (delta: 14.6 GB). Free memory was 348.3 MB in the beginning and 10.3 GB in the end (delta: -10.0 GB). Peak memory consumption was 4.7 GB. Max. memory is 16.0 GB. [2021-05-21 20:53:34,785 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.14 ms. Allocated memory is still 369.1 MB. Free memory was 349.5 MB in the beginning and 349.4 MB in the end (delta: 71.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 20:53:34,786 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.94 ms. Allocated memory is still 369.1 MB. Free memory was 348.2 MB in the beginning and 346.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 20:53:34,786 INFO L168 Benchmark]: Boogie Preprocessor took 21.76 ms. Allocated memory is still 369.1 MB. Free memory was 346.8 MB in the beginning and 345.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 20:53:34,786 INFO L168 Benchmark]: RCFGBuilder took 297.44 ms. Allocated memory is still 369.1 MB. Free memory was 345.7 MB in the beginning and 330.5 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-05-21 20:53:34,786 INFO L168 Benchmark]: TraceAbstraction took 49343.84 ms. Allocated memory was 369.1 MB in the beginning and 15.0 GB in the end (delta: 14.6 GB). Free memory was 330.1 MB in the beginning and 10.3 GB in the end (delta: -10.0 GB). Peak memory consumption was 4.6 GB. Max. memory is 16.0 GB. [2021-05-21 20:53:34,786 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.14 ms. Allocated memory is still 369.1 MB. Free memory was 349.5 MB in the beginning and 349.4 MB in the end (delta: 71.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.94 ms. Allocated memory is still 369.1 MB. Free memory was 348.2 MB in the beginning and 346.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 21.76 ms. Allocated memory is still 369.1 MB. Free memory was 346.8 MB in the beginning and 345.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 297.44 ms. Allocated memory is still 369.1 MB. Free memory was 345.7 MB in the beginning and 330.5 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 49343.84 ms. Allocated memory was 369.1 MB in the beginning and 15.0 GB in the end (delta: 14.6 GB). Free memory was 330.1 MB in the beginning and 10.3 GB in the end (delta: -10.0 GB). Peak memory consumption was 4.6 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 11 procedures, 83 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 49207.2ms, OverallIterations: 49, TraceHistogramMax: 1, EmptinessCheckTime: 1392.6ms, AutomataDifference: 20578.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 963.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3808 SDtfs, 5398 SDslu, 13350 SDs, 0 SdLazy, 14188 SolverSat, 2216 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6890.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 608 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 478 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 2454.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28621occurred in iteration=13, InterpolantAutomatonStates: 480, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 23257.0ms AutomataMinimizationTime, 49 MinimizatonAttempts, 461380 StatesRemovedByMinimization, 46 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 52.6ms SsaConstructionTime, 402.1ms SatisfiabilityAnalysisTime, 2260.8ms InterpolantComputationTime, 1911 NumberOfCodeBlocks, 1911 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 1862 ConstructedInterpolants, 0 QuantifiedInterpolants, 5436 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 49 InterpolantComputations, 49 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...