/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 04:58:14,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 04:58:14,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 04:58:14,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 04:58:14,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 04:58:14,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 04:58:14,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 04:58:14,173 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 04:58:14,209 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 04:58:14,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 04:58:14,209 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 04:58:14,210 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 04:58:14,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 04:58:14,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 04:58:14,212 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 04:58:14,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 04:58:14,212 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 04:58:14,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 04:58:14,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 04:58:14,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 04:58:14,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 04:58:14,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 04:58:14,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 04:58:14,214 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 04:58:14,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 04:58:14,214 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 04:58:14,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 04:58:14,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 04:58:14,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 04:58:14,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 04:58:14,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 04:58:14,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 04:58:14,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 04:58:14,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 04:58:14,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 04:58:14,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 04:58:14,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 04:58:14,216 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 04:58:14,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 04:58:14,216 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 04:58:14,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 04:58:14,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 04:58:14,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 04:58:14,553 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 04:58:14,555 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 04:58:14,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl [2021-06-05 04:58:14,792 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl' [2021-06-05 04:58:14,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 04:58:14,835 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 04:58:14,835 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 04:58:14,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 04:58:14,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 04:58:14,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:58:14" (1/1) ... [2021-06-05 04:58:14,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:58:14" (1/1) ... [2021-06-05 04:58:14,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 04:58:14,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 04:58:14,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 04:58:14,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 04:58:14,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:58:14" (1/1) ... [2021-06-05 04:58:14,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:58:14" (1/1) ... [2021-06-05 04:58:14,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:58:14" (1/1) ... [2021-06-05 04:58:14,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:58:14" (1/1) ... [2021-06-05 04:58:14,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:58:14" (1/1) ... [2021-06-05 04:58:14,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:58:14" (1/1) ... [2021-06-05 04:58:14,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:58:14" (1/1) ... [2021-06-05 04:58:14,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 04:58:14,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 04:58:14,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 04:58:14,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 04:58:14,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:58:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 04:58:14,940 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 04:58:14,940 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 04:58:14,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 04:58:14,941 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 04:58:14,941 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 04:58:14,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 04:58:14,941 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 04:58:14,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 04:58:14,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 04:58:14,942 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 04:58:14,942 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 04:58:14,942 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 04:58:14,942 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 04:58:15,155 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 04:58:15,156 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 04:58:15,157 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 04:58:15 BoogieIcfgContainer [2021-06-05 04:58:15,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 04:58:15,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 04:58:15,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 04:58:15,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 04:58:15,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:58:14" (1/2) ... [2021-06-05 04:58:15,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35062c4c and model type bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 04:58:15, skipping insertion in model container [2021-06-05 04:58:15,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 04:58:15" (2/2) ... [2021-06-05 04:58:15,164 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-3.wvr.bpl [2021-06-05 04:58:15,185 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 04:58:15,185 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 04:58:15,186 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 04:58:15,186 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 04:58:15,293 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-05 04:58:15,311 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 04:58:15,327 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 04:58:15,327 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 04:58:15,327 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 04:58:15,328 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 04:58:15,328 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 04:58:15,328 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 04:58:15,328 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 04:58:15,328 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 04:58:15,338 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 53 transitions, 130 flow [2021-06-05 04:58:15,543 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3171 states, 3169 states have (on average 2.7847901546229092) internal successors, (8825), 3170 states have internal predecessors, (8825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:15,554 INFO L276 IsEmpty]: Start isEmpty. Operand has 3171 states, 3169 states have (on average 2.7847901546229092) internal successors, (8825), 3170 states have internal predecessors, (8825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:15,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:15,590 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:15,591 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:15,592 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:15,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:15,601 INFO L82 PathProgramCache]: Analyzing trace with hash 21714732, now seen corresponding path program 1 times [2021-06-05 04:58:15,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:15,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401868455] [2021-06-05 04:58:15,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:15,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:15,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:15,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401868455] [2021-06-05 04:58:15,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401868455] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:15,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:15,943 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:58:15,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727305552] [2021-06-05 04:58:15,947 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 04:58:15,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:15,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 04:58:15,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-06-05 04:58:15,967 INFO L87 Difference]: Start difference. First operand has 3171 states, 3169 states have (on average 2.7847901546229092) internal successors, (8825), 3170 states have internal predecessors, (8825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:16,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:16,447 INFO L93 Difference]: Finished difference Result 5296 states and 14750 transitions. [2021-06-05 04:58:16,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 04:58:16,449 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:16,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:16,493 INFO L225 Difference]: With dead ends: 5296 [2021-06-05 04:58:16,494 INFO L226 Difference]: Without dead ends: 5296 [2021-06-05 04:58:16,495 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 179.9ms TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:58:16,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5296 states. [2021-06-05 04:58:16,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5296 to 4137. [2021-06-05 04:58:16,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4137 states, 4136 states have (on average 2.775386847195358) internal successors, (11479), 4136 states have internal predecessors, (11479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:16,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4137 states to 4137 states and 11479 transitions. [2021-06-05 04:58:16,762 INFO L78 Accepts]: Start accepts. Automaton has 4137 states and 11479 transitions. Word has length 48 [2021-06-05 04:58:16,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:16,763 INFO L482 AbstractCegarLoop]: Abstraction has 4137 states and 11479 transitions. [2021-06-05 04:58:16,763 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:16,763 INFO L276 IsEmpty]: Start isEmpty. Operand 4137 states and 11479 transitions. [2021-06-05 04:58:16,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:16,775 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:16,775 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:16,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 04:58:16,776 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:16,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:16,780 INFO L82 PathProgramCache]: Analyzing trace with hash -929108830, now seen corresponding path program 2 times [2021-06-05 04:58:16,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:16,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973521068] [2021-06-05 04:58:16,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:17,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:17,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:17,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973521068] [2021-06-05 04:58:17,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973521068] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:17,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:17,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:58:17,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245382772] [2021-06-05 04:58:17,042 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 04:58:17,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:17,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 04:58:17,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 04:58:17,045 INFO L87 Difference]: Start difference. First operand 4137 states and 11479 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:17,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:17,238 INFO L93 Difference]: Finished difference Result 5296 states and 14222 transitions. [2021-06-05 04:58:17,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 04:58:17,238 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:17,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:17,260 INFO L225 Difference]: With dead ends: 5296 [2021-06-05 04:58:17,261 INFO L226 Difference]: Without dead ends: 5103 [2021-06-05 04:58:17,261 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 134.7ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 04:58:17,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5103 states. [2021-06-05 04:58:17,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5103 to 4184. [2021-06-05 04:58:17,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4184 states, 4183 states have (on average 2.764044943820225) internal successors, (11562), 4183 states have internal predecessors, (11562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:17,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4184 states to 4184 states and 11562 transitions. [2021-06-05 04:58:17,416 INFO L78 Accepts]: Start accepts. Automaton has 4184 states and 11562 transitions. Word has length 48 [2021-06-05 04:58:17,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:17,417 INFO L482 AbstractCegarLoop]: Abstraction has 4184 states and 11562 transitions. [2021-06-05 04:58:17,417 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:17,417 INFO L276 IsEmpty]: Start isEmpty. Operand 4184 states and 11562 transitions. [2021-06-05 04:58:17,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:17,429 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:17,429 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:17,429 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 04:58:17,429 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:17,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:17,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1921632898, now seen corresponding path program 3 times [2021-06-05 04:58:17,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:17,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23398035] [2021-06-05 04:58:17,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:17,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:17,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:17,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23398035] [2021-06-05 04:58:17,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23398035] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:17,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:17,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-05 04:58:17,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470826809] [2021-06-05 04:58:17,692 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 04:58:17,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:17,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 04:58:17,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:58:17,694 INFO L87 Difference]: Start difference. First operand 4184 states and 11562 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:18,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:18,182 INFO L93 Difference]: Finished difference Result 6610 states and 17999 transitions. [2021-06-05 04:58:18,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 04:58:18,183 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:18,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:18,214 INFO L225 Difference]: With dead ends: 6610 [2021-06-05 04:58:18,215 INFO L226 Difference]: Without dead ends: 6580 [2021-06-05 04:58:18,215 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 139.3ms TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-06-05 04:58:18,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6580 states. [2021-06-05 04:58:18,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6580 to 4689. [2021-06-05 04:58:18,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4689 states, 4688 states have (on average 2.7361348122866893) internal successors, (12827), 4688 states have internal predecessors, (12827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:18,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 12827 transitions. [2021-06-05 04:58:18,378 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 12827 transitions. Word has length 48 [2021-06-05 04:58:18,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:18,378 INFO L482 AbstractCegarLoop]: Abstraction has 4689 states and 12827 transitions. [2021-06-05 04:58:18,379 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:18,379 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 12827 transitions. [2021-06-05 04:58:18,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:18,390 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:18,390 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:18,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 04:58:18,390 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:18,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:18,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1315335104, now seen corresponding path program 4 times [2021-06-05 04:58:18,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:18,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769602390] [2021-06-05 04:58:18,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:18,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:18,615 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:18,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769602390] [2021-06-05 04:58:18,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769602390] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:18,615 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:18,615 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-05 04:58:18,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599732007] [2021-06-05 04:58:18,616 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 04:58:18,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:18,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 04:58:18,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:58:18,617 INFO L87 Difference]: Start difference. First operand 4689 states and 12827 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:19,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:19,132 INFO L93 Difference]: Finished difference Result 6721 states and 18256 transitions. [2021-06-05 04:58:19,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 04:58:19,132 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:19,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:19,147 INFO L225 Difference]: With dead ends: 6721 [2021-06-05 04:58:19,147 INFO L226 Difference]: Without dead ends: 6721 [2021-06-05 04:58:19,147 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 163.9ms TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-06-05 04:58:19,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6721 states. [2021-06-05 04:58:19,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6721 to 4488. [2021-06-05 04:58:19,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4488 states, 4487 states have (on average 2.74793848896813) internal successors, (12330), 4487 states have internal predecessors, (12330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:19,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 12330 transitions. [2021-06-05 04:58:19,310 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 12330 transitions. Word has length 48 [2021-06-05 04:58:19,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:19,311 INFO L482 AbstractCegarLoop]: Abstraction has 4488 states and 12330 transitions. [2021-06-05 04:58:19,311 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:19,311 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 12330 transitions. [2021-06-05 04:58:19,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:19,321 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:19,321 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:19,321 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 04:58:19,321 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:19,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:19,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1820845956, now seen corresponding path program 5 times [2021-06-05 04:58:19,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:19,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198325328] [2021-06-05 04:58:19,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:19,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:19,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:19,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198325328] [2021-06-05 04:58:19,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198325328] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:19,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:19,407 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:58:19,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059893762] [2021-06-05 04:58:19,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 04:58:19,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:19,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 04:58:19,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 04:58:19,409 INFO L87 Difference]: Start difference. First operand 4488 states and 12330 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:19,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:19,588 INFO L93 Difference]: Finished difference Result 5641 states and 15049 transitions. [2021-06-05 04:58:19,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 04:58:19,589 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:19,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:19,599 INFO L225 Difference]: With dead ends: 5641 [2021-06-05 04:58:19,600 INFO L226 Difference]: Without dead ends: 5161 [2021-06-05 04:58:19,600 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 134.4ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 04:58:19,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5161 states. [2021-06-05 04:58:19,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5161 to 4243. [2021-06-05 04:58:19,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4243 states, 4242 states have (on average 2.747053276756247) internal successors, (11653), 4242 states have internal predecessors, (11653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:19,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4243 states to 4243 states and 11653 transitions. [2021-06-05 04:58:19,730 INFO L78 Accepts]: Start accepts. Automaton has 4243 states and 11653 transitions. Word has length 48 [2021-06-05 04:58:19,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:19,731 INFO L482 AbstractCegarLoop]: Abstraction has 4243 states and 11653 transitions. [2021-06-05 04:58:19,731 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:19,731 INFO L276 IsEmpty]: Start isEmpty. Operand 4243 states and 11653 transitions. [2021-06-05 04:58:19,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:19,740 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:19,740 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:19,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 04:58:19,741 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:19,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:19,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1271126176, now seen corresponding path program 6 times [2021-06-05 04:58:19,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:19,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40728032] [2021-06-05 04:58:19,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:19,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:19,758 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:19,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40728032] [2021-06-05 04:58:19,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40728032] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:19,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:19,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 04:58:19,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057581584] [2021-06-05 04:58:19,759 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 04:58:19,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:19,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 04:58:19,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 04:58:19,760 INFO L87 Difference]: Start difference. First operand 4243 states and 11653 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:19,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:19,778 INFO L93 Difference]: Finished difference Result 4195 states and 11359 transitions. [2021-06-05 04:58:19,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 04:58:19,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:19,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:19,786 INFO L225 Difference]: With dead ends: 4195 [2021-06-05 04:58:19,786 INFO L226 Difference]: Without dead ends: 4183 [2021-06-05 04:58:19,786 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 04:58:19,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4183 states. [2021-06-05 04:58:19,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4183 to 4183. [2021-06-05 04:58:19,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4183 states, 4182 states have (on average 2.7082735533237687) internal successors, (11326), 4182 states have internal predecessors, (11326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:19,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4183 states to 4183 states and 11326 transitions. [2021-06-05 04:58:19,887 INFO L78 Accepts]: Start accepts. Automaton has 4183 states and 11326 transitions. Word has length 48 [2021-06-05 04:58:19,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:19,888 INFO L482 AbstractCegarLoop]: Abstraction has 4183 states and 11326 transitions. [2021-06-05 04:58:19,888 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:19,888 INFO L276 IsEmpty]: Start isEmpty. Operand 4183 states and 11326 transitions. [2021-06-05 04:58:19,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:19,897 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:19,897 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:19,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 04:58:19,897 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:19,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:19,898 INFO L82 PathProgramCache]: Analyzing trace with hash -3563124, now seen corresponding path program 7 times [2021-06-05 04:58:19,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:19,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143524830] [2021-06-05 04:58:19,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:20,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:20,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:20,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143524830] [2021-06-05 04:58:20,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143524830] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:20,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:20,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:58:20,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671199824] [2021-06-05 04:58:20,012 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 04:58:20,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:20,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 04:58:20,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-06-05 04:58:20,012 INFO L87 Difference]: Start difference. First operand 4183 states and 11326 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:20,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:20,248 INFO L93 Difference]: Finished difference Result 5052 states and 13458 transitions. [2021-06-05 04:58:20,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 04:58:20,248 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:20,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:20,259 INFO L225 Difference]: With dead ends: 5052 [2021-06-05 04:58:20,259 INFO L226 Difference]: Without dead ends: 4789 [2021-06-05 04:58:20,260 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 62.8ms TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-06-05 04:58:20,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4789 states. [2021-06-05 04:58:20,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4789 to 4195. [2021-06-05 04:58:20,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4195 states, 4194 states have (on average 2.7067238912732474) internal successors, (11352), 4194 states have internal predecessors, (11352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:20,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4195 states to 4195 states and 11352 transitions. [2021-06-05 04:58:20,372 INFO L78 Accepts]: Start accepts. Automaton has 4195 states and 11352 transitions. Word has length 48 [2021-06-05 04:58:20,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:20,372 INFO L482 AbstractCegarLoop]: Abstraction has 4195 states and 11352 transitions. [2021-06-05 04:58:20,372 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:20,372 INFO L276 IsEmpty]: Start isEmpty. Operand 4195 states and 11352 transitions. [2021-06-05 04:58:20,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:20,379 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:20,379 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:20,379 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 04:58:20,380 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:20,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:20,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1405904278, now seen corresponding path program 8 times [2021-06-05 04:58:20,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:20,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859389159] [2021-06-05 04:58:20,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:20,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:20,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:20,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859389159] [2021-06-05 04:58:20,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859389159] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:20,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:20,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-05 04:58:20,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386653742] [2021-06-05 04:58:20,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 04:58:20,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:20,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 04:58:20,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:58:20,539 INFO L87 Difference]: Start difference. First operand 4195 states and 11352 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:21,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:21,044 INFO L93 Difference]: Finished difference Result 5958 states and 16031 transitions. [2021-06-05 04:58:21,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 04:58:21,053 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:21,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:21,070 INFO L225 Difference]: With dead ends: 5958 [2021-06-05 04:58:21,070 INFO L226 Difference]: Without dead ends: 5195 [2021-06-05 04:58:21,070 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 232.5ms TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2021-06-05 04:58:21,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5195 states. [2021-06-05 04:58:21,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5195 to 4186. [2021-06-05 04:58:21,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4186 states, 4185 states have (on average 2.705137395459976) internal successors, (11321), 4185 states have internal predecessors, (11321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:21,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4186 states to 4186 states and 11321 transitions. [2021-06-05 04:58:21,171 INFO L78 Accepts]: Start accepts. Automaton has 4186 states and 11321 transitions. Word has length 48 [2021-06-05 04:58:21,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:21,171 INFO L482 AbstractCegarLoop]: Abstraction has 4186 states and 11321 transitions. [2021-06-05 04:58:21,171 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:21,172 INFO L276 IsEmpty]: Start isEmpty. Operand 4186 states and 11321 transitions. [2021-06-05 04:58:21,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:21,178 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:21,178 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:21,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 04:58:21,179 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:21,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:21,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1813768894, now seen corresponding path program 9 times [2021-06-05 04:58:21,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:21,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926631966] [2021-06-05 04:58:21,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:21,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:21,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:21,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926631966] [2021-06-05 04:58:21,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926631966] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:21,353 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:21,353 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:58:21,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898161557] [2021-06-05 04:58:21,354 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 04:58:21,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:21,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 04:58:21,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-06-05 04:58:21,354 INFO L87 Difference]: Start difference. First operand 4186 states and 11321 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:21,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:21,718 INFO L93 Difference]: Finished difference Result 10394 states and 28527 transitions. [2021-06-05 04:58:21,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 04:58:21,718 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:21,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:21,738 INFO L225 Difference]: With dead ends: 10394 [2021-06-05 04:58:21,738 INFO L226 Difference]: Without dead ends: 10348 [2021-06-05 04:58:21,738 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 174.9ms TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2021-06-05 04:58:21,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10348 states. [2021-06-05 04:58:21,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10348 to 4829. [2021-06-05 04:58:21,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4829 states, 4828 states have (on average 2.714374482187241) internal successors, (13105), 4828 states have internal predecessors, (13105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:21,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4829 states to 4829 states and 13105 transitions. [2021-06-05 04:58:21,881 INFO L78 Accepts]: Start accepts. Automaton has 4829 states and 13105 transitions. Word has length 48 [2021-06-05 04:58:21,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:21,881 INFO L482 AbstractCegarLoop]: Abstraction has 4829 states and 13105 transitions. [2021-06-05 04:58:21,881 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:21,881 INFO L276 IsEmpty]: Start isEmpty. Operand 4829 states and 13105 transitions. [2021-06-05 04:58:21,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:21,889 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:21,889 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:21,889 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 04:58:21,889 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:21,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:21,890 INFO L82 PathProgramCache]: Analyzing trace with hash -962288318, now seen corresponding path program 10 times [2021-06-05 04:58:21,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:21,890 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399147200] [2021-06-05 04:58:21,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:22,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:22,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:22,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399147200] [2021-06-05 04:58:22,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399147200] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:22,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:22,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:58:22,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360878435] [2021-06-05 04:58:22,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 04:58:22,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:22,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 04:58:22,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-06-05 04:58:22,027 INFO L87 Difference]: Start difference. First operand 4829 states and 13105 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:22,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:22,395 INFO L93 Difference]: Finished difference Result 10579 states and 28918 transitions. [2021-06-05 04:58:22,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 04:58:22,395 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:22,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:22,413 INFO L225 Difference]: With dead ends: 10579 [2021-06-05 04:58:22,413 INFO L226 Difference]: Without dead ends: 10116 [2021-06-05 04:58:22,415 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 182.5ms TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2021-06-05 04:58:22,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10116 states. [2021-06-05 04:58:22,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10116 to 4940. [2021-06-05 04:58:22,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4940 states, 4939 states have (on average 2.7064183033002633) internal successors, (13367), 4939 states have internal predecessors, (13367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:22,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4940 states to 4940 states and 13367 transitions. [2021-06-05 04:58:22,571 INFO L78 Accepts]: Start accepts. Automaton has 4940 states and 13367 transitions. Word has length 48 [2021-06-05 04:58:22,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:22,573 INFO L482 AbstractCegarLoop]: Abstraction has 4940 states and 13367 transitions. [2021-06-05 04:58:22,573 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:22,573 INFO L276 IsEmpty]: Start isEmpty. Operand 4940 states and 13367 transitions. [2021-06-05 04:58:22,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:22,581 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:22,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:22,582 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 04:58:22,582 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:22,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:22,582 INFO L82 PathProgramCache]: Analyzing trace with hash 556588354, now seen corresponding path program 11 times [2021-06-05 04:58:22,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:22,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662635470] [2021-06-05 04:58:22,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:22,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:22,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:22,782 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:22,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662635470] [2021-06-05 04:58:22,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662635470] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:22,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:22,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-05 04:58:22,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795714415] [2021-06-05 04:58:22,784 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 04:58:22,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:22,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 04:58:22,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:58:22,786 INFO L87 Difference]: Start difference. First operand 4940 states and 13367 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:23,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:23,328 INFO L93 Difference]: Finished difference Result 10992 states and 28956 transitions. [2021-06-05 04:58:23,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 04:58:23,328 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:23,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:23,342 INFO L225 Difference]: With dead ends: 10992 [2021-06-05 04:58:23,342 INFO L226 Difference]: Without dead ends: 10476 [2021-06-05 04:58:23,342 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 247.7ms TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-06-05 04:58:23,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10476 states. [2021-06-05 04:58:23,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10476 to 5600. [2021-06-05 04:58:23,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5600 states, 5599 states have (on average 2.7051259153420255) internal successors, (15146), 5599 states have internal predecessors, (15146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:23,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5600 states to 5600 states and 15146 transitions. [2021-06-05 04:58:23,502 INFO L78 Accepts]: Start accepts. Automaton has 5600 states and 15146 transitions. Word has length 48 [2021-06-05 04:58:23,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:23,502 INFO L482 AbstractCegarLoop]: Abstraction has 5600 states and 15146 transitions. [2021-06-05 04:58:23,502 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:23,502 INFO L276 IsEmpty]: Start isEmpty. Operand 5600 states and 15146 transitions. [2021-06-05 04:58:23,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:23,511 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:23,511 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:23,511 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 04:58:23,511 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:23,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:23,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1232770074, now seen corresponding path program 12 times [2021-06-05 04:58:23,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:23,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296215883] [2021-06-05 04:58:23,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:23,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:23,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:23,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296215883] [2021-06-05 04:58:23,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296215883] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:23,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:23,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 04:58:23,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009022166] [2021-06-05 04:58:23,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 04:58:23,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:23,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 04:58:23,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:58:23,643 INFO L87 Difference]: Start difference. First operand 5600 states and 15146 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:23,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:23,929 INFO L93 Difference]: Finished difference Result 9309 states and 24818 transitions. [2021-06-05 04:58:23,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 04:58:23,930 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:23,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:23,941 INFO L225 Difference]: With dead ends: 9309 [2021-06-05 04:58:23,941 INFO L226 Difference]: Without dead ends: 8873 [2021-06-05 04:58:23,941 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 136.5ms TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-06-05 04:58:23,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8873 states. [2021-06-05 04:58:24,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8873 to 6236. [2021-06-05 04:58:24,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6236 states, 6235 states have (on average 2.6882117080994385) internal successors, (16761), 6235 states have internal predecessors, (16761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:24,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6236 states to 6236 states and 16761 transitions. [2021-06-05 04:58:24,124 INFO L78 Accepts]: Start accepts. Automaton has 6236 states and 16761 transitions. Word has length 48 [2021-06-05 04:58:24,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:24,124 INFO L482 AbstractCegarLoop]: Abstraction has 6236 states and 16761 transitions. [2021-06-05 04:58:24,124 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:24,124 INFO L276 IsEmpty]: Start isEmpty. Operand 6236 states and 16761 transitions. [2021-06-05 04:58:24,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:24,135 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:24,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:24,135 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 04:58:24,135 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:24,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:24,136 INFO L82 PathProgramCache]: Analyzing trace with hash -80771658, now seen corresponding path program 13 times [2021-06-05 04:58:24,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:24,136 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321272461] [2021-06-05 04:58:24,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:24,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:24,296 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:24,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321272461] [2021-06-05 04:58:24,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321272461] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:24,296 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:24,296 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 04:58:24,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588669252] [2021-06-05 04:58:24,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 04:58:24,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:24,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 04:58:24,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:58:24,299 INFO L87 Difference]: Start difference. First operand 6236 states and 16761 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:24,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:24,590 INFO L93 Difference]: Finished difference Result 7152 states and 19114 transitions. [2021-06-05 04:58:24,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 04:58:24,597 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:24,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:24,606 INFO L225 Difference]: With dead ends: 7152 [2021-06-05 04:58:24,607 INFO L226 Difference]: Without dead ends: 7152 [2021-06-05 04:58:24,607 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 99.8ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:58:24,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7152 states. [2021-06-05 04:58:24,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7152 to 6356. [2021-06-05 04:58:24,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6356 states, 6355 states have (on average 2.68324154209284) internal successors, (17052), 6355 states have internal predecessors, (17052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:24,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6356 states to 6356 states and 17052 transitions. [2021-06-05 04:58:24,749 INFO L78 Accepts]: Start accepts. Automaton has 6356 states and 17052 transitions. Word has length 48 [2021-06-05 04:58:24,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:24,750 INFO L482 AbstractCegarLoop]: Abstraction has 6356 states and 17052 transitions. [2021-06-05 04:58:24,750 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:24,750 INFO L276 IsEmpty]: Start isEmpty. Operand 6356 states and 17052 transitions. [2021-06-05 04:58:24,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:24,763 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:24,763 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:24,763 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-05 04:58:24,764 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:24,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:24,765 INFO L82 PathProgramCache]: Analyzing trace with hash 355340122, now seen corresponding path program 14 times [2021-06-05 04:58:24,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:24,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102115652] [2021-06-05 04:58:24,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:24,911 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:24,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102115652] [2021-06-05 04:58:24,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102115652] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:24,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:24,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 04:58:24,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019040934] [2021-06-05 04:58:24,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 04:58:24,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:24,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 04:58:24,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:58:24,913 INFO L87 Difference]: Start difference. First operand 6356 states and 17052 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:25,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:25,235 INFO L93 Difference]: Finished difference Result 7659 states and 20286 transitions. [2021-06-05 04:58:25,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 04:58:25,235 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:25,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:25,245 INFO L225 Difference]: With dead ends: 7659 [2021-06-05 04:58:25,245 INFO L226 Difference]: Without dead ends: 7395 [2021-06-05 04:58:25,246 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 128.6ms TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-06-05 04:58:25,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7395 states. [2021-06-05 04:58:25,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7395 to 6236. [2021-06-05 04:58:25,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6236 states, 6235 states have (on average 2.6843624699278266) internal successors, (16737), 6235 states have internal predecessors, (16737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:25,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6236 states to 6236 states and 16737 transitions. [2021-06-05 04:58:25,370 INFO L78 Accepts]: Start accepts. Automaton has 6236 states and 16737 transitions. Word has length 48 [2021-06-05 04:58:25,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:25,370 INFO L482 AbstractCegarLoop]: Abstraction has 6236 states and 16737 transitions. [2021-06-05 04:58:25,370 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:25,370 INFO L276 IsEmpty]: Start isEmpty. Operand 6236 states and 16737 transitions. [2021-06-05 04:58:25,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:25,378 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:25,379 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:25,379 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-05 04:58:25,379 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:25,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:25,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1889183876, now seen corresponding path program 15 times [2021-06-05 04:58:25,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:25,379 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124784663] [2021-06-05 04:58:25,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:25,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:25,560 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:25,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124784663] [2021-06-05 04:58:25,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124784663] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:25,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:25,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-05 04:58:25,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185629511] [2021-06-05 04:58:25,561 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 04:58:25,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:25,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 04:58:25,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:58:25,562 INFO L87 Difference]: Start difference. First operand 6236 states and 16737 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:25,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:25,981 INFO L93 Difference]: Finished difference Result 10117 states and 26888 transitions. [2021-06-05 04:58:25,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 04:58:25,981 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:25,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:25,993 INFO L225 Difference]: With dead ends: 10117 [2021-06-05 04:58:25,993 INFO L226 Difference]: Without dead ends: 10081 [2021-06-05 04:58:25,995 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 238.1ms TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-06-05 04:58:26,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10081 states. [2021-06-05 04:58:26,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10081 to 6383. [2021-06-05 04:58:26,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6383 states, 6382 states have (on average 2.680664368536509) internal successors, (17108), 6382 states have internal predecessors, (17108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:26,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6383 states to 6383 states and 17108 transitions. [2021-06-05 04:58:26,146 INFO L78 Accepts]: Start accepts. Automaton has 6383 states and 17108 transitions. Word has length 48 [2021-06-05 04:58:26,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:26,146 INFO L482 AbstractCegarLoop]: Abstraction has 6383 states and 17108 transitions. [2021-06-05 04:58:26,146 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:26,146 INFO L276 IsEmpty]: Start isEmpty. Operand 6383 states and 17108 transitions. [2021-06-05 04:58:26,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:26,157 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:26,157 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:26,157 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-05 04:58:26,157 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:26,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:26,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1104515038, now seen corresponding path program 16 times [2021-06-05 04:58:26,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:26,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906682398] [2021-06-05 04:58:26,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:26,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:26,233 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:26,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906682398] [2021-06-05 04:58:26,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906682398] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:26,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:26,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:58:26,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426748642] [2021-06-05 04:58:26,235 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 04:58:26,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:26,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 04:58:26,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-06-05 04:58:26,236 INFO L87 Difference]: Start difference. First operand 6383 states and 17108 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:26,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:26,409 INFO L93 Difference]: Finished difference Result 8915 states and 23684 transitions. [2021-06-05 04:58:26,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 04:58:26,410 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:26,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:26,418 INFO L225 Difference]: With dead ends: 8915 [2021-06-05 04:58:26,418 INFO L226 Difference]: Without dead ends: 7926 [2021-06-05 04:58:26,418 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 63.1ms TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:58:26,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7926 states. [2021-06-05 04:58:26,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7926 to 5742. [2021-06-05 04:58:26,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5742 states, 5741 states have (on average 2.653718864309354) internal successors, (15235), 5741 states have internal predecessors, (15235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:26,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5742 states to 5742 states and 15235 transitions. [2021-06-05 04:58:26,547 INFO L78 Accepts]: Start accepts. Automaton has 5742 states and 15235 transitions. Word has length 48 [2021-06-05 04:58:26,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:26,547 INFO L482 AbstractCegarLoop]: Abstraction has 5742 states and 15235 transitions. [2021-06-05 04:58:26,548 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:26,548 INFO L276 IsEmpty]: Start isEmpty. Operand 5742 states and 15235 transitions. [2021-06-05 04:58:26,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:26,555 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:26,555 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:26,555 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-05 04:58:26,556 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:26,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:26,556 INFO L82 PathProgramCache]: Analyzing trace with hash 271395798, now seen corresponding path program 17 times [2021-06-05 04:58:26,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:26,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716519726] [2021-06-05 04:58:26,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:26,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:26,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:26,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716519726] [2021-06-05 04:58:26,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716519726] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:26,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:26,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 04:58:26,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993210026] [2021-06-05 04:58:26,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 04:58:26,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:26,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 04:58:26,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-06-05 04:58:26,689 INFO L87 Difference]: Start difference. First operand 5742 states and 15235 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:26,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:26,952 INFO L93 Difference]: Finished difference Result 6475 states and 17030 transitions. [2021-06-05 04:58:26,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 04:58:26,952 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:26,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:26,958 INFO L225 Difference]: With dead ends: 6475 [2021-06-05 04:58:26,958 INFO L226 Difference]: Without dead ends: 6237 [2021-06-05 04:58:26,959 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 107.6ms TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:58:26,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6237 states. [2021-06-05 04:58:27,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6237 to 5579. [2021-06-05 04:58:27,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5579 states, 5578 states have (on average 2.6509501613481534) internal successors, (14787), 5578 states have internal predecessors, (14787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:27,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5579 states to 5579 states and 14787 transitions. [2021-06-05 04:58:27,065 INFO L78 Accepts]: Start accepts. Automaton has 5579 states and 14787 transitions. Word has length 48 [2021-06-05 04:58:27,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:27,065 INFO L482 AbstractCegarLoop]: Abstraction has 5579 states and 14787 transitions. [2021-06-05 04:58:27,065 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:27,065 INFO L276 IsEmpty]: Start isEmpty. Operand 5579 states and 14787 transitions. [2021-06-05 04:58:27,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:27,073 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:27,073 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:27,074 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-05 04:58:27,074 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:27,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:27,074 INFO L82 PathProgramCache]: Analyzing trace with hash 707507578, now seen corresponding path program 18 times [2021-06-05 04:58:27,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:27,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878896507] [2021-06-05 04:58:27,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:27,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:27,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:27,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878896507] [2021-06-05 04:58:27,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878896507] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:27,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:27,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 04:58:27,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622669233] [2021-06-05 04:58:27,208 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 04:58:27,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:27,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 04:58:27,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-05 04:58:27,208 INFO L87 Difference]: Start difference. First operand 5579 states and 14787 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:27,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:27,512 INFO L93 Difference]: Finished difference Result 6360 states and 16745 transitions. [2021-06-05 04:58:27,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 04:58:27,513 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:27,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:27,519 INFO L225 Difference]: With dead ends: 6360 [2021-06-05 04:58:27,519 INFO L226 Difference]: Without dead ends: 5998 [2021-06-05 04:58:27,520 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 170.7ms TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-06-05 04:58:27,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5998 states. [2021-06-05 04:58:27,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5998 to 5340. [2021-06-05 04:58:27,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5340 states, 5339 states have (on average 2.6606106012361868) internal successors, (14205), 5339 states have internal predecessors, (14205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:27,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5340 states to 5340 states and 14205 transitions. [2021-06-05 04:58:27,621 INFO L78 Accepts]: Start accepts. Automaton has 5340 states and 14205 transitions. Word has length 48 [2021-06-05 04:58:27,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:27,621 INFO L482 AbstractCegarLoop]: Abstraction has 5340 states and 14205 transitions. [2021-06-05 04:58:27,621 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:27,621 INFO L276 IsEmpty]: Start isEmpty. Operand 5340 states and 14205 transitions. [2021-06-05 04:58:27,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:27,629 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:27,629 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:27,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-05 04:58:27,629 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:27,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:27,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1707987518, now seen corresponding path program 19 times [2021-06-05 04:58:27,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:27,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358291870] [2021-06-05 04:58:27,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:27,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:27,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:27,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358291870] [2021-06-05 04:58:27,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358291870] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:27,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:27,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 04:58:27,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618025888] [2021-06-05 04:58:27,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 04:58:27,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:27,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 04:58:27,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-05 04:58:27,762 INFO L87 Difference]: Start difference. First operand 5340 states and 14205 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:28,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:28,003 INFO L93 Difference]: Finished difference Result 6454 states and 16972 transitions. [2021-06-05 04:58:28,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 04:58:28,004 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:28,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:28,010 INFO L225 Difference]: With dead ends: 6454 [2021-06-05 04:58:28,010 INFO L226 Difference]: Without dead ends: 6424 [2021-06-05 04:58:28,011 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 124.9ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-06-05 04:58:28,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6424 states. [2021-06-05 04:58:28,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6424 to 5412. [2021-06-05 04:58:28,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5412 states, 5411 states have (on average 2.6579190537793385) internal successors, (14382), 5411 states have internal predecessors, (14382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:28,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 14382 transitions. [2021-06-05 04:58:28,098 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 14382 transitions. Word has length 48 [2021-06-05 04:58:28,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:28,098 INFO L482 AbstractCegarLoop]: Abstraction has 5412 states and 14382 transitions. [2021-06-05 04:58:28,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:28,099 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 14382 transitions. [2021-06-05 04:58:28,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:28,103 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:28,104 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:28,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-05 04:58:28,104 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:28,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:28,104 INFO L82 PathProgramCache]: Analyzing trace with hash -406719136, now seen corresponding path program 20 times [2021-06-05 04:58:28,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:28,104 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685143950] [2021-06-05 04:58:28,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:28,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:28,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:28,192 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:28,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685143950] [2021-06-05 04:58:28,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685143950] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:28,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:28,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:58:28,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136664074] [2021-06-05 04:58:28,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 04:58:28,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:28,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 04:58:28,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 04:58:28,193 INFO L87 Difference]: Start difference. First operand 5412 states and 14382 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:28,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:28,434 INFO L93 Difference]: Finished difference Result 7894 states and 20847 transitions. [2021-06-05 04:58:28,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 04:58:28,434 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:28,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:28,442 INFO L225 Difference]: With dead ends: 7894 [2021-06-05 04:58:28,442 INFO L226 Difference]: Without dead ends: 7798 [2021-06-05 04:58:28,442 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 118.1ms TimeCoverageRelationStatistics Valid=65, Invalid=91, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:58:28,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7798 states. [2021-06-05 04:58:28,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7798 to 5277. [2021-06-05 04:58:28,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5277 states, 5276 states have (on average 2.6639499620924942) internal successors, (14055), 5276 states have internal predecessors, (14055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:28,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5277 states to 5277 states and 14055 transitions. [2021-06-05 04:58:28,541 INFO L78 Accepts]: Start accepts. Automaton has 5277 states and 14055 transitions. Word has length 48 [2021-06-05 04:58:28,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:28,541 INFO L482 AbstractCegarLoop]: Abstraction has 5277 states and 14055 transitions. [2021-06-05 04:58:28,541 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:28,542 INFO L276 IsEmpty]: Start isEmpty. Operand 5277 states and 14055 transitions. [2021-06-05 04:58:28,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:28,548 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:28,548 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:28,548 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-05 04:58:28,548 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:28,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:28,548 INFO L82 PathProgramCache]: Analyzing trace with hash 994715074, now seen corresponding path program 21 times [2021-06-05 04:58:28,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:28,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136815909] [2021-06-05 04:58:28,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:28,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:28,558 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:28,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136815909] [2021-06-05 04:58:28,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136815909] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:28,559 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:28,559 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 04:58:28,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821518187] [2021-06-05 04:58:28,559 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 04:58:28,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:28,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 04:58:28,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 04:58:28,560 INFO L87 Difference]: Start difference. First operand 5277 states and 14055 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:28,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:28,575 INFO L93 Difference]: Finished difference Result 4552 states and 11743 transitions. [2021-06-05 04:58:28,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 04:58:28,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:28,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:28,580 INFO L225 Difference]: With dead ends: 4552 [2021-06-05 04:58:28,580 INFO L226 Difference]: Without dead ends: 4418 [2021-06-05 04:58:28,580 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 04:58:28,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4418 states. [2021-06-05 04:58:28,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4418 to 4370. [2021-06-05 04:58:28,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4370 states, 4369 states have (on average 2.5934996566720074) internal successors, (11331), 4369 states have internal predecessors, (11331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:28,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4370 states to 4370 states and 11331 transitions. [2021-06-05 04:58:28,656 INFO L78 Accepts]: Start accepts. Automaton has 4370 states and 11331 transitions. Word has length 48 [2021-06-05 04:58:28,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:28,656 INFO L482 AbstractCegarLoop]: Abstraction has 4370 states and 11331 transitions. [2021-06-05 04:58:28,656 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:28,657 INFO L276 IsEmpty]: Start isEmpty. Operand 4370 states and 11331 transitions. [2021-06-05 04:58:28,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:28,662 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:28,662 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:28,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-05 04:58:28,662 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:28,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:28,662 INFO L82 PathProgramCache]: Analyzing trace with hash 76293474, now seen corresponding path program 22 times [2021-06-05 04:58:28,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:28,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185527334] [2021-06-05 04:58:28,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:28,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:28,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:28,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185527334] [2021-06-05 04:58:28,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185527334] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:28,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:28,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 04:58:28,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624816071] [2021-06-05 04:58:28,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 04:58:28,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:28,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 04:58:28,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 04:58:28,673 INFO L87 Difference]: Start difference. First operand 4370 states and 11331 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:28,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:28,687 INFO L93 Difference]: Finished difference Result 4250 states and 10780 transitions. [2021-06-05 04:58:28,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 04:58:28,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:28,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:28,692 INFO L225 Difference]: With dead ends: 4250 [2021-06-05 04:58:28,692 INFO L226 Difference]: Without dead ends: 4250 [2021-06-05 04:58:28,692 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 04:58:28,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4250 states. [2021-06-05 04:58:28,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4250 to 4250. [2021-06-05 04:58:28,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4250 states, 4249 states have (on average 2.5370675453047777) internal successors, (10780), 4249 states have internal predecessors, (10780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:28,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4250 states to 4250 states and 10780 transitions. [2021-06-05 04:58:28,771 INFO L78 Accepts]: Start accepts. Automaton has 4250 states and 10780 transitions. Word has length 48 [2021-06-05 04:58:28,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:28,771 INFO L482 AbstractCegarLoop]: Abstraction has 4250 states and 10780 transitions. [2021-06-05 04:58:28,772 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:28,772 INFO L276 IsEmpty]: Start isEmpty. Operand 4250 states and 10780 transitions. [2021-06-05 04:58:28,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:28,777 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:28,777 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:28,778 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-05 04:58:28,778 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:28,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:28,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1673336162, now seen corresponding path program 23 times [2021-06-05 04:58:28,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:28,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930540093] [2021-06-05 04:58:28,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:28,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:28,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:28,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930540093] [2021-06-05 04:58:28,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930540093] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:28,846 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:28,846 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:58:28,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365504606] [2021-06-05 04:58:28,847 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 04:58:28,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:28,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 04:58:28,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 04:58:28,848 INFO L87 Difference]: Start difference. First operand 4250 states and 10780 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:28,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:28,994 INFO L93 Difference]: Finished difference Result 4826 states and 12069 transitions. [2021-06-05 04:58:28,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 04:58:28,995 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:28,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:29,000 INFO L225 Difference]: With dead ends: 4826 [2021-06-05 04:58:29,001 INFO L226 Difference]: Without dead ends: 4486 [2021-06-05 04:58:29,001 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 122.3ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 04:58:29,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4486 states. [2021-06-05 04:58:29,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4486 to 4162. [2021-06-05 04:58:29,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4162 states, 4161 states have (on average 2.5231915404950733) internal successors, (10499), 4161 states have internal predecessors, (10499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:29,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4162 states to 4162 states and 10499 transitions. [2021-06-05 04:58:29,080 INFO L78 Accepts]: Start accepts. Automaton has 4162 states and 10499 transitions. Word has length 48 [2021-06-05 04:58:29,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:29,080 INFO L482 AbstractCegarLoop]: Abstraction has 4162 states and 10499 transitions. [2021-06-05 04:58:29,081 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:29,081 INFO L276 IsEmpty]: Start isEmpty. Operand 4162 states and 10499 transitions. [2021-06-05 04:58:29,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:29,086 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:29,086 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:29,086 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-05 04:58:29,086 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:29,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:29,087 INFO L82 PathProgramCache]: Analyzing trace with hash -869937714, now seen corresponding path program 24 times [2021-06-05 04:58:29,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:29,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420599018] [2021-06-05 04:58:29,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:29,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:29,188 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:29,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420599018] [2021-06-05 04:58:29,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420599018] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:29,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:29,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 04:58:29,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783771679] [2021-06-05 04:58:29,189 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 04:58:29,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:29,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 04:58:29,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-05 04:58:29,189 INFO L87 Difference]: Start difference. First operand 4162 states and 10499 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:29,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:29,492 INFO L93 Difference]: Finished difference Result 6178 states and 15407 transitions. [2021-06-05 04:58:29,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 04:58:29,492 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:29,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:29,496 INFO L225 Difference]: With dead ends: 6178 [2021-06-05 04:58:29,496 INFO L226 Difference]: Without dead ends: 6020 [2021-06-05 04:58:29,497 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 138.7ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-06-05 04:58:29,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6020 states. [2021-06-05 04:58:29,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6020 to 4186. [2021-06-05 04:58:29,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4186 states, 4185 states have (on average 2.521624850657109) internal successors, (10553), 4185 states have internal predecessors, (10553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:29,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4186 states to 4186 states and 10553 transitions. [2021-06-05 04:58:29,580 INFO L78 Accepts]: Start accepts. Automaton has 4186 states and 10553 transitions. Word has length 48 [2021-06-05 04:58:29,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:29,580 INFO L482 AbstractCegarLoop]: Abstraction has 4186 states and 10553 transitions. [2021-06-05 04:58:29,581 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:29,581 INFO L276 IsEmpty]: Start isEmpty. Operand 4186 states and 10553 transitions. [2021-06-05 04:58:29,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:29,585 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:29,585 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:29,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-05 04:58:29,586 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:29,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:29,586 INFO L82 PathProgramCache]: Analyzing trace with hash -221230618, now seen corresponding path program 25 times [2021-06-05 04:58:29,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:29,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498178994] [2021-06-05 04:58:29,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:29,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:29,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:29,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498178994] [2021-06-05 04:58:29,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498178994] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:29,681 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:29,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 04:58:29,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784667548] [2021-06-05 04:58:29,682 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:58:29,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:29,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:58:29,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:58:29,683 INFO L87 Difference]: Start difference. First operand 4186 states and 10553 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:29,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:29,849 INFO L93 Difference]: Finished difference Result 6074 states and 15232 transitions. [2021-06-05 04:58:29,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:58:29,857 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:29,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:29,862 INFO L225 Difference]: With dead ends: 6074 [2021-06-05 04:58:29,862 INFO L226 Difference]: Without dead ends: 6010 [2021-06-05 04:58:29,863 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 97.4ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 04:58:29,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6010 states. [2021-06-05 04:58:29,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6010 to 4817. [2021-06-05 04:58:29,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4817 states, 4816 states have (on average 2.514950166112957) internal successors, (12112), 4816 states have internal predecessors, (12112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:29,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4817 states to 4817 states and 12112 transitions. [2021-06-05 04:58:29,939 INFO L78 Accepts]: Start accepts. Automaton has 4817 states and 12112 transitions. Word has length 48 [2021-06-05 04:58:29,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:29,939 INFO L482 AbstractCegarLoop]: Abstraction has 4817 states and 12112 transitions. [2021-06-05 04:58:29,939 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:29,939 INFO L276 IsEmpty]: Start isEmpty. Operand 4817 states and 12112 transitions. [2021-06-05 04:58:29,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:29,943 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:29,943 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:29,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-05 04:58:29,943 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:29,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:29,944 INFO L82 PathProgramCache]: Analyzing trace with hash 773664548, now seen corresponding path program 26 times [2021-06-05 04:58:29,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:29,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219994299] [2021-06-05 04:58:29,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:30,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:30,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:30,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219994299] [2021-06-05 04:58:30,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219994299] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:30,029 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:30,029 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 04:58:30,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157323840] [2021-06-05 04:58:30,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:58:30,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:30,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:58:30,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:58:30,030 INFO L87 Difference]: Start difference. First operand 4817 states and 12112 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:30,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:30,195 INFO L93 Difference]: Finished difference Result 5483 states and 13653 transitions. [2021-06-05 04:58:30,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:58:30,195 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:30,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:30,200 INFO L225 Difference]: With dead ends: 5483 [2021-06-05 04:58:30,201 INFO L226 Difference]: Without dead ends: 5285 [2021-06-05 04:58:30,201 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 88.1ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 04:58:30,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5285 states. [2021-06-05 04:58:30,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5285 to 4721. [2021-06-05 04:58:30,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4721 states, 4720 states have (on average 2.510593220338983) internal successors, (11850), 4720 states have internal predecessors, (11850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:30,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4721 states to 4721 states and 11850 transitions. [2021-06-05 04:58:30,288 INFO L78 Accepts]: Start accepts. Automaton has 4721 states and 11850 transitions. Word has length 48 [2021-06-05 04:58:30,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:30,288 INFO L482 AbstractCegarLoop]: Abstraction has 4721 states and 11850 transitions. [2021-06-05 04:58:30,288 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:30,288 INFO L276 IsEmpty]: Start isEmpty. Operand 4721 states and 11850 transitions. [2021-06-05 04:58:30,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:30,294 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:30,294 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:30,294 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-05 04:58:30,294 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:30,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:30,294 INFO L82 PathProgramCache]: Analyzing trace with hash -458909894, now seen corresponding path program 27 times [2021-06-05 04:58:30,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:30,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658614129] [2021-06-05 04:58:30,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:30,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:30,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:30,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658614129] [2021-06-05 04:58:30,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658614129] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:30,352 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:30,352 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:58:30,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766971811] [2021-06-05 04:58:30,352 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 04:58:30,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:30,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 04:58:30,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 04:58:30,353 INFO L87 Difference]: Start difference. First operand 4721 states and 11850 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:30,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:30,494 INFO L93 Difference]: Finished difference Result 5071 states and 12592 transitions. [2021-06-05 04:58:30,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 04:58:30,494 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:30,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:30,500 INFO L225 Difference]: With dead ends: 5071 [2021-06-05 04:58:30,500 INFO L226 Difference]: Without dead ends: 4977 [2021-06-05 04:58:30,500 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 115.0ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 04:58:30,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4977 states. [2021-06-05 04:58:30,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4977 to 4701. [2021-06-05 04:58:30,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4701 states, 4700 states have (on average 2.5063829787234044) internal successors, (11780), 4700 states have internal predecessors, (11780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:30,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4701 states to 4701 states and 11780 transitions. [2021-06-05 04:58:30,579 INFO L78 Accepts]: Start accepts. Automaton has 4701 states and 11780 transitions. Word has length 48 [2021-06-05 04:58:30,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:30,579 INFO L482 AbstractCegarLoop]: Abstraction has 4701 states and 11780 transitions. [2021-06-05 04:58:30,579 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:30,579 INFO L276 IsEmpty]: Start isEmpty. Operand 4701 states and 11780 transitions. [2021-06-05 04:58:30,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:30,585 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:30,586 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:30,586 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-05 04:58:30,586 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:30,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:30,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1054099754, now seen corresponding path program 28 times [2021-06-05 04:58:30,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:30,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122997296] [2021-06-05 04:58:30,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:30,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:30,652 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:30,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122997296] [2021-06-05 04:58:30,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122997296] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:30,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:30,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 04:58:30,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180188395] [2021-06-05 04:58:30,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:58:30,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:30,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:58:30,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:58:30,653 INFO L87 Difference]: Start difference. First operand 4701 states and 11780 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:30,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:30,813 INFO L93 Difference]: Finished difference Result 5012 states and 12428 transitions. [2021-06-05 04:58:30,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 04:58:30,814 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:30,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:30,819 INFO L225 Difference]: With dead ends: 5012 [2021-06-05 04:58:30,819 INFO L226 Difference]: Without dead ends: 4956 [2021-06-05 04:58:30,819 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 68.9ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-06-05 04:58:30,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4956 states. [2021-06-05 04:58:30,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4956 to 4626. [2021-06-05 04:58:30,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4626 states, 4625 states have (on average 2.4966486486486485) internal successors, (11547), 4625 states have internal predecessors, (11547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:30,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4626 states to 4626 states and 11547 transitions. [2021-06-05 04:58:30,898 INFO L78 Accepts]: Start accepts. Automaton has 4626 states and 11547 transitions. Word has length 48 [2021-06-05 04:58:30,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:30,899 INFO L482 AbstractCegarLoop]: Abstraction has 4626 states and 11547 transitions. [2021-06-05 04:58:30,899 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:30,899 INFO L276 IsEmpty]: Start isEmpty. Operand 4626 states and 11547 transitions. [2021-06-05 04:58:30,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:30,924 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:30,924 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:30,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-05 04:58:30,925 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:30,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:30,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1231787908, now seen corresponding path program 29 times [2021-06-05 04:58:30,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:30,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437716459] [2021-06-05 04:58:30,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:31,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:31,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:31,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437716459] [2021-06-05 04:58:31,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437716459] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:31,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:31,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 04:58:31,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994439578] [2021-06-05 04:58:31,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:58:31,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:31,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:58:31,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:58:31,007 INFO L87 Difference]: Start difference. First operand 4626 states and 11547 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:31,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:31,203 INFO L93 Difference]: Finished difference Result 5161 states and 12755 transitions. [2021-06-05 04:58:31,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:58:31,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:31,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:31,209 INFO L225 Difference]: With dead ends: 5161 [2021-06-05 04:58:31,209 INFO L226 Difference]: Without dead ends: 5097 [2021-06-05 04:58:31,210 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 89.7ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 04:58:31,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5097 states. [2021-06-05 04:58:31,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5097 to 4562. [2021-06-05 04:58:31,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4562 states, 4561 states have (on average 2.4930936198202147) internal successors, (11371), 4561 states have internal predecessors, (11371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:31,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4562 states to 4562 states and 11371 transitions. [2021-06-05 04:58:31,292 INFO L78 Accepts]: Start accepts. Automaton has 4562 states and 11371 transitions. Word has length 48 [2021-06-05 04:58:31,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:31,292 INFO L482 AbstractCegarLoop]: Abstraction has 4562 states and 11371 transitions. [2021-06-05 04:58:31,292 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:31,292 INFO L276 IsEmpty]: Start isEmpty. Operand 4562 states and 11371 transitions. [2021-06-05 04:58:31,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:31,302 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:31,302 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:31,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-05 04:58:31,302 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:31,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:31,303 INFO L82 PathProgramCache]: Analyzing trace with hash -2068284222, now seen corresponding path program 30 times [2021-06-05 04:58:31,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:31,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420500802] [2021-06-05 04:58:31,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:31,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:31,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:31,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420500802] [2021-06-05 04:58:31,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420500802] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:31,395 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:31,395 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 04:58:31,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865865443] [2021-06-05 04:58:31,395 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:58:31,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:31,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:58:31,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:58:31,395 INFO L87 Difference]: Start difference. First operand 4562 states and 11371 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:31,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:31,562 INFO L93 Difference]: Finished difference Result 4731 states and 11602 transitions. [2021-06-05 04:58:31,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:58:31,563 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:31,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:31,568 INFO L225 Difference]: With dead ends: 4731 [2021-06-05 04:58:31,568 INFO L226 Difference]: Without dead ends: 4554 [2021-06-05 04:58:31,569 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 87.3ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 04:58:31,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4554 states. [2021-06-05 04:58:31,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4554 to 3648. [2021-06-05 04:58:31,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3647 states have (on average 2.4798464491362764) internal successors, (9044), 3647 states have internal predecessors, (9044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:31,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 9044 transitions. [2021-06-05 04:58:31,637 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 9044 transitions. Word has length 48 [2021-06-05 04:58:31,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:31,637 INFO L482 AbstractCegarLoop]: Abstraction has 3648 states and 9044 transitions. [2021-06-05 04:58:31,637 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:31,637 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 9044 transitions. [2021-06-05 04:58:31,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:31,641 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:31,641 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:31,641 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-05 04:58:31,641 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:31,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:31,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1838280150, now seen corresponding path program 31 times [2021-06-05 04:58:31,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:31,642 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748221254] [2021-06-05 04:58:31,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:31,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:31,708 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:31,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748221254] [2021-06-05 04:58:31,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748221254] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:31,709 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:31,709 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 04:58:31,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645651958] [2021-06-05 04:58:31,709 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:58:31,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:31,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:58:31,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:58:31,709 INFO L87 Difference]: Start difference. First operand 3648 states and 9044 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:31,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:31,848 INFO L93 Difference]: Finished difference Result 4584 states and 11250 transitions. [2021-06-05 04:58:31,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:58:31,849 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:31,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:31,853 INFO L225 Difference]: With dead ends: 4584 [2021-06-05 04:58:31,853 INFO L226 Difference]: Without dead ends: 4534 [2021-06-05 04:58:31,853 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 47.9ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:58:31,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4534 states. [2021-06-05 04:58:31,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4534 to 3646. [2021-06-05 04:58:31,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 2.4790123456790125) internal successors, (9036), 3645 states have internal predecessors, (9036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:31,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 9036 transitions. [2021-06-05 04:58:31,922 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 9036 transitions. Word has length 48 [2021-06-05 04:58:31,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:31,922 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 9036 transitions. [2021-06-05 04:58:31,922 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:31,922 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 9036 transitions. [2021-06-05 04:58:31,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:31,928 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:31,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:31,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-05 04:58:31,928 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:31,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:31,929 INFO L82 PathProgramCache]: Analyzing trace with hash -163243666, now seen corresponding path program 32 times [2021-06-05 04:58:31,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:31,929 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869964781] [2021-06-05 04:58:31,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:31,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:31,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:31,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869964781] [2021-06-05 04:58:31,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869964781] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:31,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:31,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:58:31,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187073806] [2021-06-05 04:58:31,995 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 04:58:31,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:31,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 04:58:31,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 04:58:31,997 INFO L87 Difference]: Start difference. First operand 3646 states and 9036 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:32,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:32,128 INFO L93 Difference]: Finished difference Result 4172 states and 10205 transitions. [2021-06-05 04:58:32,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 04:58:32,129 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:32,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:32,132 INFO L225 Difference]: With dead ends: 4172 [2021-06-05 04:58:32,132 INFO L226 Difference]: Without dead ends: 3835 [2021-06-05 04:58:32,132 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 115.4ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 04:58:32,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3835 states. [2021-06-05 04:58:32,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3835 to 3521. [2021-06-05 04:58:32,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3521 states, 3520 states have (on average 2.4607954545454547) internal successors, (8662), 3520 states have internal predecessors, (8662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:32,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3521 states to 3521 states and 8662 transitions. [2021-06-05 04:58:32,174 INFO L78 Accepts]: Start accepts. Automaton has 3521 states and 8662 transitions. Word has length 48 [2021-06-05 04:58:32,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:32,174 INFO L482 AbstractCegarLoop]: Abstraction has 3521 states and 8662 transitions. [2021-06-05 04:58:32,175 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:32,175 INFO L276 IsEmpty]: Start isEmpty. Operand 3521 states and 8662 transitions. [2021-06-05 04:58:32,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:32,177 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:32,178 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:32,178 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-05 04:58:32,178 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:32,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:32,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1076849684, now seen corresponding path program 33 times [2021-06-05 04:58:32,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:32,178 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058029537] [2021-06-05 04:58:32,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:32,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:32,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:32,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058029537] [2021-06-05 04:58:32,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058029537] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:32,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:32,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 04:58:32,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550939009] [2021-06-05 04:58:32,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 04:58:32,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:32,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 04:58:32,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 04:58:32,287 INFO L87 Difference]: Start difference. First operand 3521 states and 8662 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:32,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:32,478 INFO L93 Difference]: Finished difference Result 5134 states and 12499 transitions. [2021-06-05 04:58:32,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:58:32,478 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:32,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:32,482 INFO L225 Difference]: With dead ends: 5134 [2021-06-05 04:58:32,482 INFO L226 Difference]: Without dead ends: 4828 [2021-06-05 04:58:32,482 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 121.8ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-06-05 04:58:32,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4828 states. [2021-06-05 04:58:32,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4828 to 3954. [2021-06-05 04:58:32,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3954 states, 3953 states have (on average 2.437136352137617) internal successors, (9634), 3953 states have internal predecessors, (9634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:32,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3954 states to 3954 states and 9634 transitions. [2021-06-05 04:58:32,541 INFO L78 Accepts]: Start accepts. Automaton has 3954 states and 9634 transitions. Word has length 48 [2021-06-05 04:58:32,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:32,542 INFO L482 AbstractCegarLoop]: Abstraction has 3954 states and 9634 transitions. [2021-06-05 04:58:32,542 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:32,542 INFO L276 IsEmpty]: Start isEmpty. Operand 3954 states and 9634 transitions. [2021-06-05 04:58:32,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:32,546 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:32,546 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:32,546 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-05 04:58:32,546 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:32,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:32,547 INFO L82 PathProgramCache]: Analyzing trace with hash 527044882, now seen corresponding path program 34 times [2021-06-05 04:58:32,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:32,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656282235] [2021-06-05 04:58:32,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:32,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:32,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:32,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656282235] [2021-06-05 04:58:32,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656282235] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:32,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:32,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 04:58:32,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243829966] [2021-06-05 04:58:32,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 04:58:32,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:32,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 04:58:32,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 04:58:32,643 INFO L87 Difference]: Start difference. First operand 3954 states and 9634 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:32,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:32,803 INFO L93 Difference]: Finished difference Result 4539 states and 10974 transitions. [2021-06-05 04:58:32,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:58:32,804 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:32,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:32,807 INFO L225 Difference]: With dead ends: 4539 [2021-06-05 04:58:32,807 INFO L226 Difference]: Without dead ends: 4187 [2021-06-05 04:58:32,807 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 118.9ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-06-05 04:58:32,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4187 states. [2021-06-05 04:58:32,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4187 to 3627. [2021-06-05 04:58:32,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3627 states, 3626 states have (on average 2.4332597904026474) internal successors, (8823), 3626 states have internal predecessors, (8823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:32,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3627 states to 3627 states and 8823 transitions. [2021-06-05 04:58:32,853 INFO L78 Accepts]: Start accepts. Automaton has 3627 states and 8823 transitions. Word has length 48 [2021-06-05 04:58:32,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:32,853 INFO L482 AbstractCegarLoop]: Abstraction has 3627 states and 8823 transitions. [2021-06-05 04:58:32,853 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:32,853 INFO L276 IsEmpty]: Start isEmpty. Operand 3627 states and 8823 transitions. [2021-06-05 04:58:32,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:32,856 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:32,856 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:32,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-05 04:58:32,856 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:32,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:32,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1279163436, now seen corresponding path program 35 times [2021-06-05 04:58:32,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:32,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543251033] [2021-06-05 04:58:32,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:32,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:32,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:32,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543251033] [2021-06-05 04:58:32,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543251033] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:32,955 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:32,955 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 04:58:32,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235610574] [2021-06-05 04:58:32,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 04:58:32,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:32,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 04:58:32,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 04:58:32,956 INFO L87 Difference]: Start difference. First operand 3627 states and 8823 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:33,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:33,160 INFO L93 Difference]: Finished difference Result 4198 states and 10112 transitions. [2021-06-05 04:58:33,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:58:33,161 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:33,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:33,165 INFO L225 Difference]: With dead ends: 4198 [2021-06-05 04:58:33,165 INFO L226 Difference]: Without dead ends: 3945 [2021-06-05 04:58:33,165 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 123.6ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-06-05 04:58:33,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3945 states. [2021-06-05 04:58:33,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3945 to 3587. [2021-06-05 04:58:33,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3587 states, 3586 states have (on average 2.4121583937534856) internal successors, (8650), 3586 states have internal predecessors, (8650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:33,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3587 states to 3587 states and 8650 transitions. [2021-06-05 04:58:33,229 INFO L78 Accepts]: Start accepts. Automaton has 3587 states and 8650 transitions. Word has length 48 [2021-06-05 04:58:33,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:33,229 INFO L482 AbstractCegarLoop]: Abstraction has 3587 states and 8650 transitions. [2021-06-05 04:58:33,229 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:33,229 INFO L276 IsEmpty]: Start isEmpty. Operand 3587 states and 8650 transitions. [2021-06-05 04:58:33,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:33,234 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:33,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:33,234 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-05 04:58:33,234 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:33,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:33,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1828968238, now seen corresponding path program 36 times [2021-06-05 04:58:33,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:33,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18223799] [2021-06-05 04:58:33,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:33,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:33,351 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:33,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18223799] [2021-06-05 04:58:33,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18223799] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:33,351 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:33,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 04:58:33,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787747984] [2021-06-05 04:58:33,351 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 04:58:33,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:33,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 04:58:33,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 04:58:33,352 INFO L87 Difference]: Start difference. First operand 3587 states and 8650 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:33,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:33,548 INFO L93 Difference]: Finished difference Result 3868 states and 9238 transitions. [2021-06-05 04:58:33,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:58:33,548 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:33,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:33,552 INFO L225 Difference]: With dead ends: 3868 [2021-06-05 04:58:33,552 INFO L226 Difference]: Without dead ends: 3069 [2021-06-05 04:58:33,553 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 125.5ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-06-05 04:58:33,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2021-06-05 04:58:33,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 2756. [2021-06-05 04:58:33,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2756 states, 2755 states have (on average 2.3731397459165153) internal successors, (6538), 2755 states have internal predecessors, (6538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:33,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 6538 transitions. [2021-06-05 04:58:33,602 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 6538 transitions. Word has length 48 [2021-06-05 04:58:33,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:33,603 INFO L482 AbstractCegarLoop]: Abstraction has 2756 states and 6538 transitions. [2021-06-05 04:58:33,603 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:33,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 6538 transitions. [2021-06-05 04:58:33,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:33,606 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:33,606 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:33,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-05 04:58:33,607 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:33,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:33,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1684872736, now seen corresponding path program 37 times [2021-06-05 04:58:33,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:33,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380663023] [2021-06-05 04:58:33,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:33,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:33,744 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:33,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380663023] [2021-06-05 04:58:33,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380663023] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:33,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:33,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-05 04:58:33,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161155250] [2021-06-05 04:58:33,747 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 04:58:33,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:33,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 04:58:33,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:58:33,747 INFO L87 Difference]: Start difference. First operand 2756 states and 6538 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:34,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:34,123 INFO L93 Difference]: Finished difference Result 3824 states and 8912 transitions. [2021-06-05 04:58:34,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 04:58:34,124 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:34,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:34,127 INFO L225 Difference]: With dead ends: 3824 [2021-06-05 04:58:34,127 INFO L226 Difference]: Without dead ends: 3670 [2021-06-05 04:58:34,127 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 236.6ms TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-06-05 04:58:34,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3670 states. [2021-06-05 04:58:34,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3670 to 2683. [2021-06-05 04:58:34,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2683 states, 2682 states have (on average 2.3732289336316184) internal successors, (6365), 2682 states have internal predecessors, (6365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:34,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2683 states to 2683 states and 6365 transitions. [2021-06-05 04:58:34,171 INFO L78 Accepts]: Start accepts. Automaton has 2683 states and 6365 transitions. Word has length 48 [2021-06-05 04:58:34,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:34,171 INFO L482 AbstractCegarLoop]: Abstraction has 2683 states and 6365 transitions. [2021-06-05 04:58:34,171 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:34,171 INFO L276 IsEmpty]: Start isEmpty. Operand 2683 states and 6365 transitions. [2021-06-05 04:58:34,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:34,174 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:34,174 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:34,174 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-05 04:58:34,174 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:34,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:34,175 INFO L82 PathProgramCache]: Analyzing trace with hash -567074070, now seen corresponding path program 38 times [2021-06-05 04:58:34,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:34,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619657517] [2021-06-05 04:58:34,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:34,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:34,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:34,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619657517] [2021-06-05 04:58:34,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619657517] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:34,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:34,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-05 04:58:34,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661284398] [2021-06-05 04:58:34,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 04:58:34,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:34,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 04:58:34,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:58:34,342 INFO L87 Difference]: Start difference. First operand 2683 states and 6365 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:34,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:34,606 INFO L93 Difference]: Finished difference Result 3008 states and 7066 transitions. [2021-06-05 04:58:34,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 04:58:34,606 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:34,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:34,608 INFO L225 Difference]: With dead ends: 3008 [2021-06-05 04:58:34,608 INFO L226 Difference]: Without dead ends: 2882 [2021-06-05 04:58:34,609 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 150.1ms TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-06-05 04:58:34,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2021-06-05 04:58:34,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2536. [2021-06-05 04:58:34,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2536 states, 2535 states have (on average 2.3846153846153846) internal successors, (6045), 2535 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:34,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2536 states to 2536 states and 6045 transitions. [2021-06-05 04:58:34,638 INFO L78 Accepts]: Start accepts. Automaton has 2536 states and 6045 transitions. Word has length 48 [2021-06-05 04:58:34,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:34,639 INFO L482 AbstractCegarLoop]: Abstraction has 2536 states and 6045 transitions. [2021-06-05 04:58:34,639 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:34,639 INFO L276 IsEmpty]: Start isEmpty. Operand 2536 states and 6045 transitions. [2021-06-05 04:58:34,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:34,641 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:34,641 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:34,641 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-05 04:58:34,641 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:34,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:34,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1527737234, now seen corresponding path program 39 times [2021-06-05 04:58:34,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:34,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261041588] [2021-06-05 04:58:34,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:34,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:34,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:34,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261041588] [2021-06-05 04:58:34,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261041588] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:34,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:34,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:58:34,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207477076] [2021-06-05 04:58:34,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 04:58:34,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:34,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 04:58:34,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 04:58:34,700 INFO L87 Difference]: Start difference. First operand 2536 states and 6045 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:34,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:34,837 INFO L93 Difference]: Finished difference Result 2784 states and 6562 transitions. [2021-06-05 04:58:34,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 04:58:34,837 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:34,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:34,840 INFO L225 Difference]: With dead ends: 2784 [2021-06-05 04:58:34,840 INFO L226 Difference]: Without dead ends: 2272 [2021-06-05 04:58:34,840 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 113.3ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 04:58:34,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2021-06-05 04:58:34,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 1997. [2021-06-05 04:58:34,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1997 states, 1996 states have (on average 2.3456913827655312) internal successors, (4682), 1996 states have internal predecessors, (4682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:34,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 4682 transitions. [2021-06-05 04:58:34,874 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 4682 transitions. Word has length 48 [2021-06-05 04:58:34,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:34,874 INFO L482 AbstractCegarLoop]: Abstraction has 1997 states and 4682 transitions. [2021-06-05 04:58:34,874 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:34,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 4682 transitions. [2021-06-05 04:58:34,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:34,876 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:34,876 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:34,877 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-05 04:58:34,877 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:34,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:34,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1742602862, now seen corresponding path program 40 times [2021-06-05 04:58:34,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:34,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531239980] [2021-06-05 04:58:34,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:34,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:34,948 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:34,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531239980] [2021-06-05 04:58:34,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531239980] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:34,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:34,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 04:58:34,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537261676] [2021-06-05 04:58:34,949 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 04:58:34,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:34,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 04:58:34,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:58:34,949 INFO L87 Difference]: Start difference. First operand 1997 states and 4682 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:35,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:35,081 INFO L93 Difference]: Finished difference Result 1924 states and 4439 transitions. [2021-06-05 04:58:35,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:58:35,081 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:35,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:35,082 INFO L225 Difference]: With dead ends: 1924 [2021-06-05 04:58:35,082 INFO L226 Difference]: Without dead ends: 1708 [2021-06-05 04:58:35,083 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 61.0ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:58:35,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2021-06-05 04:58:35,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1708. [2021-06-05 04:58:35,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1708 states, 1707 states have (on average 2.3134153485647335) internal successors, (3949), 1707 states have internal predecessors, (3949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:35,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 3949 transitions. [2021-06-05 04:58:35,099 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 3949 transitions. Word has length 48 [2021-06-05 04:58:35,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:35,099 INFO L482 AbstractCegarLoop]: Abstraction has 1708 states and 3949 transitions. [2021-06-05 04:58:35,099 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:35,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 3949 transitions. [2021-06-05 04:58:35,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:35,101 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:35,101 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:35,101 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-05 04:58:35,102 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:35,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:35,102 INFO L82 PathProgramCache]: Analyzing trace with hash 668037194, now seen corresponding path program 41 times [2021-06-05 04:58:35,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:35,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2243595] [2021-06-05 04:58:35,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:35,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:35,168 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:35,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2243595] [2021-06-05 04:58:35,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2243595] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:35,169 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:35,169 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 04:58:35,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809321083] [2021-06-05 04:58:35,169 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 04:58:35,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:35,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 04:58:35,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:58:35,170 INFO L87 Difference]: Start difference. First operand 1708 states and 3949 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:35,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:35,260 INFO L93 Difference]: Finished difference Result 2079 states and 4726 transitions. [2021-06-05 04:58:35,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 04:58:35,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:35,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:35,262 INFO L225 Difference]: With dead ends: 2079 [2021-06-05 04:58:35,262 INFO L226 Difference]: Without dead ends: 1763 [2021-06-05 04:58:35,262 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 43.7ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:58:35,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2021-06-05 04:58:35,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1561. [2021-06-05 04:58:35,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1561 states, 1560 states have (on average 2.2788461538461537) internal successors, (3555), 1560 states have internal predecessors, (3555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:35,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 3555 transitions. [2021-06-05 04:58:35,285 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 3555 transitions. Word has length 48 [2021-06-05 04:58:35,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:35,285 INFO L482 AbstractCegarLoop]: Abstraction has 1561 states and 3555 transitions. [2021-06-05 04:58:35,285 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:35,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 3555 transitions. [2021-06-05 04:58:35,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:35,287 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:35,287 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:35,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-05 04:58:35,287 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:35,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:35,287 INFO L82 PathProgramCache]: Analyzing trace with hash -543361422, now seen corresponding path program 42 times [2021-06-05 04:58:35,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:35,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780284817] [2021-06-05 04:58:35,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:35,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:35,353 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:35,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780284817] [2021-06-05 04:58:35,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780284817] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:35,353 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:35,353 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 04:58:35,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106045471] [2021-06-05 04:58:35,354 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:58:35,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:35,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:58:35,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:58:35,354 INFO L87 Difference]: Start difference. First operand 1561 states and 3555 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:35,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:35,449 INFO L93 Difference]: Finished difference Result 1567 states and 3496 transitions. [2021-06-05 04:58:35,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 04:58:35,449 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:35,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:35,451 INFO L225 Difference]: With dead ends: 1567 [2021-06-05 04:58:35,451 INFO L226 Difference]: Without dead ends: 1281 [2021-06-05 04:58:35,451 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 53.8ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-06-05 04:58:35,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-06-05 04:58:35,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1281. [2021-06-05 04:58:35,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 1280 states have (on average 2.2234375) internal successors, (2846), 1280 states have internal predecessors, (2846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:35,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 2846 transitions. [2021-06-05 04:58:35,467 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 2846 transitions. Word has length 48 [2021-06-05 04:58:35,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:35,467 INFO L482 AbstractCegarLoop]: Abstraction has 1281 states and 2846 transitions. [2021-06-05 04:58:35,468 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:35,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 2846 transitions. [2021-06-05 04:58:35,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:35,469 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:35,469 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:35,469 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-05 04:58:35,469 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:35,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:35,469 INFO L82 PathProgramCache]: Analyzing trace with hash 630703062, now seen corresponding path program 43 times [2021-06-05 04:58:35,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:35,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986054933] [2021-06-05 04:58:35,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:35,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:35,510 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:35,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986054933] [2021-06-05 04:58:35,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986054933] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:35,510 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:35,510 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 04:58:35,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516135974] [2021-06-05 04:58:35,511 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 04:58:35,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:35,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 04:58:35,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:58:35,511 INFO L87 Difference]: Start difference. First operand 1281 states and 2846 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:35,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:35,577 INFO L93 Difference]: Finished difference Result 996 states and 2169 transitions. [2021-06-05 04:58:35,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:58:35,578 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:35,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:35,579 INFO L225 Difference]: With dead ends: 996 [2021-06-05 04:58:35,579 INFO L226 Difference]: Without dead ends: 423 [2021-06-05 04:58:35,580 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 31.4ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:58:35,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-06-05 04:58:35,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 363. [2021-06-05 04:58:35,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 2.1270718232044197) internal successors, (770), 362 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:35,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 770 transitions. [2021-06-05 04:58:35,585 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 770 transitions. Word has length 48 [2021-06-05 04:58:35,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:35,586 INFO L482 AbstractCegarLoop]: Abstraction has 363 states and 770 transitions. [2021-06-05 04:58:35,586 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:35,586 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 770 transitions. [2021-06-05 04:58:35,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 04:58:35,587 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:35,587 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:35,587 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-05 04:58:35,587 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:35,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:35,587 INFO L82 PathProgramCache]: Analyzing trace with hash -301103428, now seen corresponding path program 44 times [2021-06-05 04:58:35,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:35,588 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678528189] [2021-06-05 04:58:35,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:35,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:35,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:35,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678528189] [2021-06-05 04:58:35,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678528189] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:58:35,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:58:35,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 04:58:35,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553880902] [2021-06-05 04:58:35,668 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:58:35,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:35,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:58:35,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:58:35,669 INFO L87 Difference]: Start difference. First operand 363 states and 770 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:35,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:35,794 INFO L93 Difference]: Finished difference Result 343 states and 732 transitions. [2021-06-05 04:58:35,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 04:58:35,794 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 04:58:35,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:35,794 INFO L225 Difference]: With dead ends: 343 [2021-06-05 04:58:35,794 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 04:58:35,794 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 90.8ms TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:58:35,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 04:58:35,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 04:58:35,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:35,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 04:58:35,795 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2021-06-05 04:58:35,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:35,795 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 04:58:35,795 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:35,795 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 04:58:35,795 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 04:58:35,795 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-05 04:58:35,797 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 04:58:35,800 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 04:58:35 BasicIcfg [2021-06-05 04:58:35,800 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 04:58:35,800 INFO L168 Benchmark]: Toolchain (without parser) took 20965.82 ms. Allocated memory was 364.9 MB in the beginning and 836.8 MB in the end (delta: 471.9 MB). Free memory was 343.7 MB in the beginning and 373.6 MB in the end (delta: -29.9 MB). Peak memory consumption was 443.5 MB. Max. memory is 16.0 GB. [2021-06-05 04:58:35,800 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 364.9 MB. Free memory was 344.9 MB in the beginning and 344.9 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 04:58:35,800 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.89 ms. Allocated memory is still 364.9 MB. Free memory was 343.6 MB in the beginning and 342.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 04:58:35,800 INFO L168 Benchmark]: Boogie Preprocessor took 13.68 ms. Allocated memory is still 364.9 MB. Free memory was 342.2 MB in the beginning and 341.2 MB in the end (delta: 962.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 04:58:35,801 INFO L168 Benchmark]: RCFGBuilder took 281.53 ms. Allocated memory is still 364.9 MB. Free memory was 341.1 MB in the beginning and 327.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-06-05 04:58:35,801 INFO L168 Benchmark]: TraceAbstraction took 20640.96 ms. Allocated memory was 364.9 MB in the beginning and 836.8 MB in the end (delta: 471.9 MB). Free memory was 326.7 MB in the beginning and 373.6 MB in the end (delta: -46.9 MB). Peak memory consumption was 426.7 MB. Max. memory is 16.0 GB. [2021-06-05 04:58:35,801 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 0.15 ms. Allocated memory is still 364.9 MB. Free memory was 344.9 MB in the beginning and 344.9 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.89 ms. Allocated memory is still 364.9 MB. Free memory was 343.6 MB in the beginning and 342.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.68 ms. Allocated memory is still 364.9 MB. Free memory was 342.2 MB in the beginning and 341.2 MB in the end (delta: 962.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 281.53 ms. Allocated memory is still 364.9 MB. Free memory was 341.1 MB in the beginning and 327.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 20640.96 ms. Allocated memory was 364.9 MB in the beginning and 836.8 MB in the end (delta: 471.9 MB). Free memory was 326.7 MB in the beginning and 373.6 MB in the end (delta: -46.9 MB). Peak memory consumption was 426.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 82]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 99 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 20470.8ms, OverallIterations: 44, TraceHistogramMax: 1, EmptinessCheckTime: 330.9ms, AutomataDifference: 10688.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 215.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4543 SDtfs, 8036 SDslu, 18000 SDs, 0 SdLazy, 10928 SolverSat, 1866 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5536.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 574 GetRequests, 68 SyntacticMatches, 28 SemanticMatches, 478 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 5088.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6383occurred in iteration=15, InterpolantAutomatonStates: 466, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 4041.4ms AutomataMinimizationTime, 44 MinimizatonAttempts, 50804 StatesRemovedByMinimization, 39 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 70.1ms SsaConstructionTime, 407.8ms SatisfiabilityAnalysisTime, 4391.8ms InterpolantComputationTime, 2112 NumberOfCodeBlocks, 2112 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 2068 ConstructedInterpolants, 0 QuantifiedInterpolants, 12895 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 44 InterpolantComputations, 44 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...