/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 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 22:17:57,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 22:17:57,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 22:17:57,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 22:17:57,626 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 22:17:57,660 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 22:17:57,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 22:17:57,661 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 22:17:57,661 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 22:17:57,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 22:17:57,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 22:17:57,664 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 22:17:57,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 22:17:57,664 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 22:17:57,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 22:17:57,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 22:17:57,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 22:17:57,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 22:17:57,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 22:17:57,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 22:17:57,666 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 22:17:57,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 22:17:57,666 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 22:17:57,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 22:17:57,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 22:17:57,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 22:17:57,667 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 22:17:57,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 22:17:57,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 22:17:57,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 22:17:57,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 22:17:57,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 22:17:57,668 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 22:17:57,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 22:17:57,668 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 22:17:57,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 22:17:57,668 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 22:17:57,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 22:17:58,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 22:17:58,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 22:17:58,026 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 22:17:58,028 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 22:17:58,029 INFO L432 ainManager$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 22:17:58,057 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 22:17:58,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 22:17:58,135 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 22:17:58,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 22:17:58,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 22:17:58,136 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 22:17:58,147 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 10:17:58" (1/1) ... [2021-06-05 22:17:58,154 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 10:17:58" (1/1) ... [2021-06-05 22:17:58,161 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 22:17:58,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 22:17:58,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 22:17:58,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 22:17:58,170 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 10:17:58" (1/1) ... [2021-06-05 22:17:58,171 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 10:17:58" (1/1) ... [2021-06-05 22:17:58,178 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 10:17:58" (1/1) ... [2021-06-05 22:17:58,178 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 10:17:58" (1/1) ... [2021-06-05 22:17:58,187 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 10:17:58" (1/1) ... [2021-06-05 22:17:58,188 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 10:17:58" (1/1) ... [2021-06-05 22:17:58,189 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 10:17:58" (1/1) ... [2021-06-05 22:17:58,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 22:17:58,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 22:17:58,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 22:17:58,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 22:17:58,192 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 10:17:58" (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 22:17:58,248 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 22:17:58,249 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 22:17:58,249 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 22:17:58,249 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 22:17:58,249 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 22:17:58,249 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 22:17:58,249 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 22:17:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 22:17:58,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 22:17:58,250 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 22:17:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 22:17:58,251 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 22:17:58,252 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 22:17:58,447 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 22:17:58,448 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 22:17:58,449 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:17:58 BoogieIcfgContainer [2021-06-05 22:17:58,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 22:17:58,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 22:17:58,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 22:17:58,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 22:17:58,453 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 10:17:58" (1/2) ... [2021-06-05 22:17:58,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730933b0 and model type bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 10:17:58, skipping insertion in model container [2021-06-05 22:17:58,454 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 10:17:58" (2/2) ... [2021-06-05 22:17:58,455 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-3.wvr.bpl [2021-06-05 22:17:58,460 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 22:17:58,460 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 22:17:58,460 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 22:17:58,461 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 22:17:58,498 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-05 22:17:58,536 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 22:17:58,550 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 22:17:58,550 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 22:17:58,551 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 22:17:58,551 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 22:17:58,551 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 22:17:58,551 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 22:17:58,551 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 22:17:58,551 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 22:17:58,559 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 53 transitions, 130 flow [2021-06-05 22:17:58,802 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 22:17:58,812 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 22:17:58,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:17:58,847 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:17:58,848 INFO L554 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 22:17:58,849 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:17:58,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:17:58,858 INFO L82 PathProgramCache]: Analyzing trace with hash 21714732, now seen corresponding path program 1 times [2021-06-05 22:17:58,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:17:58,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774170919] [2021-06-05 22:17:58,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:17:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:17:59,258 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 22:17:59,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:17:59,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774170919] [2021-06-05 22:17:59,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774170919] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:17:59,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:17:59,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:17:59,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849960858] [2021-06-05 22:17:59,266 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:17:59,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:17:59,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:17:59,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:17:59,293 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 22:17:59,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:17:59,805 INFO L93 Difference]: Finished difference Result 5296 states and 14750 transitions. [2021-06-05 22:17:59,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 22:17:59,806 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 22:17:59,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:17:59,842 INFO L225 Difference]: With dead ends: 5296 [2021-06-05 22:17:59,842 INFO L226 Difference]: Without dead ends: 5296 [2021-06-05 22:17:59,843 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 202.4ms TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-06-05 22:17:59,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5296 states. [2021-06-05 22:18:00,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5296 to 4137. [2021-06-05 22:18:00,086 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 22:18:00,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4137 states to 4137 states and 11479 transitions. [2021-06-05 22:18:00,107 INFO L78 Accepts]: Start accepts. Automaton has 4137 states and 11479 transitions. Word has length 48 [2021-06-05 22:18:00,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:00,107 INFO L482 AbstractCegarLoop]: Abstraction has 4137 states and 11479 transitions. [2021-06-05 22:18:00,107 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 22:18:00,107 INFO L276 IsEmpty]: Start isEmpty. Operand 4137 states and 11479 transitions. [2021-06-05 22:18:00,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:00,119 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:00,119 INFO L554 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 22:18:00,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 22:18:00,120 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:00,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:00,124 INFO L82 PathProgramCache]: Analyzing trace with hash -766310718, now seen corresponding path program 2 times [2021-06-05 22:18:00,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:00,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979730652] [2021-06-05 22:18:00,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:00,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:18:00,350 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:00,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979730652] [2021-06-05 22:18:00,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979730652] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:00,352 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:00,352 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:18:00,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907086589] [2021-06-05 22:18:00,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:18:00,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:00,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:18:00,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:18:00,360 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 22:18:00,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:00,580 INFO L93 Difference]: Finished difference Result 5296 states and 14222 transitions. [2021-06-05 22:18:00,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 22:18:00,581 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 22:18:00,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:00,607 INFO L225 Difference]: With dead ends: 5296 [2021-06-05 22:18:00,607 INFO L226 Difference]: Without dead ends: 5103 [2021-06-05 22:18:00,608 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 186.8ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:18:00,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5103 states. [2021-06-05 22:18:00,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5103 to 4184. [2021-06-05 22:18:00,765 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 22:18:00,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4184 states to 4184 states and 11562 transitions. [2021-06-05 22:18:00,779 INFO L78 Accepts]: Start accepts. Automaton has 4184 states and 11562 transitions. Word has length 48 [2021-06-05 22:18:00,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:00,779 INFO L482 AbstractCegarLoop]: Abstraction has 4184 states and 11562 transitions. [2021-06-05 22:18:00,780 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 22:18:00,780 INFO L276 IsEmpty]: Start isEmpty. Operand 4184 states and 11562 transitions. [2021-06-05 22:18:00,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:00,793 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:00,793 INFO L554 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 22:18:00,793 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 22:18:00,794 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:00,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:00,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1921632898, now seen corresponding path program 3 times [2021-06-05 22:18:00,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:00,796 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691523023] [2021-06-05 22:18:00,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:01,002 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 22:18:01,003 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:01,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691523023] [2021-06-05 22:18:01,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691523023] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:01,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:01,003 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-05 22:18:01,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402223423] [2021-06-05 22:18:01,004 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 22:18:01,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:01,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 22:18:01,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-06-05 22:18:01,005 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 22:18:01,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:01,496 INFO L93 Difference]: Finished difference Result 6610 states and 17999 transitions. [2021-06-05 22:18:01,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 22:18:01,497 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 22:18:01,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:01,559 INFO L225 Difference]: With dead ends: 6610 [2021-06-05 22:18:01,559 INFO L226 Difference]: Without dead ends: 6580 [2021-06-05 22:18:01,560 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 149.4ms TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-06-05 22:18:01,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6580 states. [2021-06-05 22:18:01,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6580 to 4689. [2021-06-05 22:18:01,744 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 22:18:01,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 12827 transitions. [2021-06-05 22:18:01,756 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 12827 transitions. Word has length 48 [2021-06-05 22:18:01,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:01,757 INFO L482 AbstractCegarLoop]: Abstraction has 4689 states and 12827 transitions. [2021-06-05 22:18:01,757 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 22:18:01,757 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 12827 transitions. [2021-06-05 22:18:01,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:01,768 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:01,768 INFO L554 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 22:18:01,768 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 22:18:01,768 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:01,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:01,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1315335104, now seen corresponding path program 4 times [2021-06-05 22:18:01,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:01,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531124857] [2021-06-05 22:18:01,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:01,975 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 22:18:01,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:01,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531124857] [2021-06-05 22:18:01,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531124857] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:01,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:01,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-05 22:18:01,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364290530] [2021-06-05 22:18:01,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 22:18:01,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:01,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 22:18:01,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-06-05 22:18:01,978 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 22:18:02,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:02,477 INFO L93 Difference]: Finished difference Result 6721 states and 18256 transitions. [2021-06-05 22:18:02,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 22:18:02,478 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 22:18:02,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:02,496 INFO L225 Difference]: With dead ends: 6721 [2021-06-05 22:18:02,497 INFO L226 Difference]: Without dead ends: 6721 [2021-06-05 22:18:02,498 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 179.2ms TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:18:02,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6721 states. [2021-06-05 22:18:02,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6721 to 4488. [2021-06-05 22:18:02,628 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 22:18:02,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 12330 transitions. [2021-06-05 22:18:02,639 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 12330 transitions. Word has length 48 [2021-06-05 22:18:02,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:02,640 INFO L482 AbstractCegarLoop]: Abstraction has 4488 states and 12330 transitions. [2021-06-05 22:18:02,640 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 22:18:02,640 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 12330 transitions. [2021-06-05 22:18:02,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:02,649 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:02,649 INFO L554 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 22:18:02,649 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 22:18:02,650 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:02,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:02,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1820845956, now seen corresponding path program 5 times [2021-06-05 22:18:02,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:02,651 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987835902] [2021-06-05 22:18:02,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:02,766 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 22:18:02,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:02,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987835902] [2021-06-05 22:18:02,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987835902] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:02,767 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:02,768 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:18:02,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139094321] [2021-06-05 22:18:02,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:18:02,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:02,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:18:02,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:18:02,770 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 22:18:02,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:02,943 INFO L93 Difference]: Finished difference Result 5641 states and 15049 transitions. [2021-06-05 22:18:02,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 22:18:02,944 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 22:18:02,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:02,953 INFO L225 Difference]: With dead ends: 5641 [2021-06-05 22:18:02,953 INFO L226 Difference]: Without dead ends: 5161 [2021-06-05 22:18:02,953 INFO L810 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 22:18:02,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5161 states. [2021-06-05 22:18:03,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5161 to 4243. [2021-06-05 22:18:03,066 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 22:18:03,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4243 states to 4243 states and 11653 transitions. [2021-06-05 22:18:03,076 INFO L78 Accepts]: Start accepts. Automaton has 4243 states and 11653 transitions. Word has length 48 [2021-06-05 22:18:03,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:03,077 INFO L482 AbstractCegarLoop]: Abstraction has 4243 states and 11653 transitions. [2021-06-05 22:18:03,077 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 22:18:03,078 INFO L276 IsEmpty]: Start isEmpty. Operand 4243 states and 11653 transitions. [2021-06-05 22:18:03,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:03,087 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:03,087 INFO L554 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 22:18:03,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 22:18:03,088 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:03,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:03,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1271126176, now seen corresponding path program 6 times [2021-06-05 22:18:03,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:03,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584237571] [2021-06-05 22:18:03,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:03,126 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 22:18:03,126 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:03,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584237571] [2021-06-05 22:18:03,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584237571] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:03,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:03,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 22:18:03,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778943439] [2021-06-05 22:18:03,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 22:18:03,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:03,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 22:18:03,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:18:03,129 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 22:18:03,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:03,146 INFO L93 Difference]: Finished difference Result 4195 states and 11359 transitions. [2021-06-05 22:18:03,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 22:18:03,147 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 22:18:03,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:03,154 INFO L225 Difference]: With dead ends: 4195 [2021-06-05 22:18:03,155 INFO L226 Difference]: Without dead ends: 4183 [2021-06-05 22:18:03,155 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:18:03,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4183 states. [2021-06-05 22:18:03,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4183 to 4183. [2021-06-05 22:18:03,270 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 22:18:03,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4183 states to 4183 states and 11326 transitions. [2021-06-05 22:18:03,280 INFO L78 Accepts]: Start accepts. Automaton has 4183 states and 11326 transitions. Word has length 48 [2021-06-05 22:18:03,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:03,282 INFO L482 AbstractCegarLoop]: Abstraction has 4183 states and 11326 transitions. [2021-06-05 22:18:03,283 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 22:18:03,283 INFO L276 IsEmpty]: Start isEmpty. Operand 4183 states and 11326 transitions. [2021-06-05 22:18:03,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:03,296 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:03,296 INFO L554 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 22:18:03,296 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 22:18:03,296 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:03,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:03,297 INFO L82 PathProgramCache]: Analyzing trace with hash -3563124, now seen corresponding path program 7 times [2021-06-05 22:18:03,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:03,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727056551] [2021-06-05 22:18:03,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:03,450 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 22:18:03,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:03,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727056551] [2021-06-05 22:18:03,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727056551] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:03,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:03,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:18:03,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288469426] [2021-06-05 22:18:03,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:18:03,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:03,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:18:03,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:18:03,452 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 22:18:03,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:03,695 INFO L93 Difference]: Finished difference Result 5052 states and 13458 transitions. [2021-06-05 22:18:03,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 22:18:03,696 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 22:18:03,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:03,705 INFO L225 Difference]: With dead ends: 5052 [2021-06-05 22:18:03,705 INFO L226 Difference]: Without dead ends: 4789 [2021-06-05 22:18:03,708 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 64.4ms TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:18:03,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4789 states. [2021-06-05 22:18:03,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4789 to 4195. [2021-06-05 22:18:03,808 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 22:18:03,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4195 states to 4195 states and 11352 transitions. [2021-06-05 22:18:03,816 INFO L78 Accepts]: Start accepts. Automaton has 4195 states and 11352 transitions. Word has length 48 [2021-06-05 22:18:03,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:03,817 INFO L482 AbstractCegarLoop]: Abstraction has 4195 states and 11352 transitions. [2021-06-05 22:18:03,817 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 22:18:03,817 INFO L276 IsEmpty]: Start isEmpty. Operand 4195 states and 11352 transitions. [2021-06-05 22:18:03,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:03,824 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:03,824 INFO L554 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 22:18:03,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 22:18:03,824 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:03,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:03,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1394699670, now seen corresponding path program 8 times [2021-06-05 22:18:03,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:03,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693371693] [2021-06-05 22:18:03,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:03,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:18:03,861 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:03,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693371693] [2021-06-05 22:18:03,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693371693] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:03,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:03,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 22:18:03,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131661607] [2021-06-05 22:18:03,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 22:18:03,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:03,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 22:18:03,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:18:03,863 INFO L87 Difference]: Start difference. First operand 4195 states and 11352 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 22:18:03,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:03,880 INFO L93 Difference]: Finished difference Result 4135 states and 10948 transitions. [2021-06-05 22:18:03,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 22:18:03,880 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 22:18:03,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:03,888 INFO L225 Difference]: With dead ends: 4135 [2021-06-05 22:18:03,888 INFO L226 Difference]: Without dead ends: 4135 [2021-06-05 22:18:03,888 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:18:03,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4135 states. [2021-06-05 22:18:03,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4135 to 4069. [2021-06-05 22:18:03,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4069 states, 4068 states have (on average 2.652409046214356) internal successors, (10790), 4068 states have internal predecessors, (10790), 0 states have call successors, (0), 0 states 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 22:18:03,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4069 states to 4069 states and 10790 transitions. [2021-06-05 22:18:03,988 INFO L78 Accepts]: Start accepts. Automaton has 4069 states and 10790 transitions. Word has length 48 [2021-06-05 22:18:03,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:03,988 INFO L482 AbstractCegarLoop]: Abstraction has 4069 states and 10790 transitions. [2021-06-05 22:18:03,989 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 22:18:03,989 INFO L276 IsEmpty]: Start isEmpty. Operand 4069 states and 10790 transitions. [2021-06-05 22:18:03,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:03,996 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:03,996 INFO L554 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 22:18:03,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 22:18:03,996 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:03,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:03,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1269490762, now seen corresponding path program 9 times [2021-06-05 22:18:03,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:03,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369738506] [2021-06-05 22:18:03,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:04,194 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 22:18:04,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:04,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369738506] [2021-06-05 22:18:04,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369738506] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:04,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:04,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-05 22:18:04,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876523838] [2021-06-05 22:18:04,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 22:18:04,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:04,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 22:18:04,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-06-05 22:18:04,196 INFO L87 Difference]: Start difference. First operand 4069 states and 10790 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 22:18:04,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:04,691 INFO L93 Difference]: Finished difference Result 5461 states and 14265 transitions. [2021-06-05 22:18:04,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 22:18:04,691 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 22:18:04,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:04,703 INFO L225 Difference]: With dead ends: 5461 [2021-06-05 22:18:04,703 INFO L226 Difference]: Without dead ends: 4771 [2021-06-05 22:18:04,703 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 220.1ms TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2021-06-05 22:18:04,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4771 states. [2021-06-05 22:18:04,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4771 to 4096. [2021-06-05 22:18:04,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4096 states, 4095 states have (on average 2.645177045177045) internal successors, (10832), 4095 states have internal predecessors, (10832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:18:04,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4096 states to 4096 states and 10832 transitions. [2021-06-05 22:18:04,797 INFO L78 Accepts]: Start accepts. Automaton has 4096 states and 10832 transitions. Word has length 48 [2021-06-05 22:18:04,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:04,797 INFO L482 AbstractCegarLoop]: Abstraction has 4096 states and 10832 transitions. [2021-06-05 22:18:04,797 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 22:18:04,797 INFO L276 IsEmpty]: Start isEmpty. Operand 4096 states and 10832 transitions. [2021-06-05 22:18:04,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:04,804 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:04,804 INFO L554 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 22:18:04,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 22:18:04,807 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:04,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:04,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1813768894, now seen corresponding path program 10 times [2021-06-05 22:18:04,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:04,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491682402] [2021-06-05 22:18:04,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:04,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:18:04,965 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:04,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491682402] [2021-06-05 22:18:04,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491682402] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:04,966 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:04,966 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:18:04,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488237423] [2021-06-05 22:18:04,966 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:18:04,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:04,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:18:04,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:18:04,967 INFO L87 Difference]: Start difference. First operand 4096 states and 10832 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 22:18:05,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:05,292 INFO L93 Difference]: Finished difference Result 9053 states and 24158 transitions. [2021-06-05 22:18:05,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 22:18:05,293 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 22:18:05,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:05,316 INFO L225 Difference]: With dead ends: 9053 [2021-06-05 22:18:05,316 INFO L226 Difference]: Without dead ends: 9017 [2021-06-05 22:18:05,316 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 170.0ms TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:18:05,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9017 states. [2021-06-05 22:18:05,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9017 to 4681. [2021-06-05 22:18:05,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4681 states, 4680 states have (on average 2.6534188034188033) internal successors, (12418), 4680 states have internal predecessors, (12418), 0 states have call successors, (0), 0 states 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 22:18:05,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4681 states to 4681 states and 12418 transitions. [2021-06-05 22:18:05,506 INFO L78 Accepts]: Start accepts. Automaton has 4681 states and 12418 transitions. Word has length 48 [2021-06-05 22:18:05,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:05,507 INFO L482 AbstractCegarLoop]: Abstraction has 4681 states and 12418 transitions. [2021-06-05 22:18:05,507 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 22:18:05,507 INFO L276 IsEmpty]: Start isEmpty. Operand 4681 states and 12418 transitions. [2021-06-05 22:18:05,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:05,517 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:05,517 INFO L554 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 22:18:05,517 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 22:18:05,517 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:05,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:05,518 INFO L82 PathProgramCache]: Analyzing trace with hash -962288318, now seen corresponding path program 11 times [2021-06-05 22:18:05,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:05,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801513349] [2021-06-05 22:18:05,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:05,691 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 22:18:05,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:05,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801513349] [2021-06-05 22:18:05,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801513349] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:05,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:05,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:18:05,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968803811] [2021-06-05 22:18:05,692 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:18:05,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:05,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:18:05,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:18:05,694 INFO L87 Difference]: Start difference. First operand 4681 states and 12418 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 22:18:06,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:06,109 INFO L93 Difference]: Finished difference Result 9244 states and 24561 transitions. [2021-06-05 22:18:06,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 22:18:06,110 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 22:18:06,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:06,128 INFO L225 Difference]: With dead ends: 9244 [2021-06-05 22:18:06,128 INFO L226 Difference]: Without dead ends: 8817 [2021-06-05 22:18:06,129 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 225.9ms TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:18:06,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8817 states. [2021-06-05 22:18:06,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8817 to 4796. [2021-06-05 22:18:06,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4796 states, 4795 states have (on average 2.6498435870698644) internal successors, (12706), 4795 states have internal predecessors, (12706), 0 states have call successors, (0), 0 states 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 22:18:06,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4796 states to 4796 states and 12706 transitions. [2021-06-05 22:18:06,267 INFO L78 Accepts]: Start accepts. Automaton has 4796 states and 12706 transitions. Word has length 48 [2021-06-05 22:18:06,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:06,267 INFO L482 AbstractCegarLoop]: Abstraction has 4796 states and 12706 transitions. [2021-06-05 22:18:06,267 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 22:18:06,267 INFO L276 IsEmpty]: Start isEmpty. Operand 4796 states and 12706 transitions. [2021-06-05 22:18:06,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:06,274 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:06,274 INFO L554 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 22:18:06,275 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 22:18:06,275 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:06,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:06,275 INFO L82 PathProgramCache]: Analyzing trace with hash -533010174, now seen corresponding path program 12 times [2021-06-05 22:18:06,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:06,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546100385] [2021-06-05 22:18:06,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:06,435 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 22:18:06,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:06,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546100385] [2021-06-05 22:18:06,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546100385] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:06,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:06,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 22:18:06,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331608470] [2021-06-05 22:18:06,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 22:18:06,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:06,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 22:18:06,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:18:06,436 INFO L87 Difference]: Start difference. First operand 4796 states and 12706 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 22:18:06,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:06,885 INFO L93 Difference]: Finished difference Result 7965 states and 21204 transitions. [2021-06-05 22:18:06,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 22:18:06,886 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 22:18:06,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:06,898 INFO L225 Difference]: With dead ends: 7965 [2021-06-05 22:18:06,898 INFO L226 Difference]: Without dead ends: 7909 [2021-06-05 22:18:06,899 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 236.5ms TimeCoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2021-06-05 22:18:06,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7909 states. [2021-06-05 22:18:07,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7909 to 5186. [2021-06-05 22:18:07,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5186 states, 5185 states have (on average 2.654194792671167) internal successors, (13762), 5185 states have internal predecessors, (13762), 0 states have call successors, (0), 0 states 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 22:18:07,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5186 states to 5186 states and 13762 transitions. [2021-06-05 22:18:07,060 INFO L78 Accepts]: Start accepts. Automaton has 5186 states and 13762 transitions. Word has length 48 [2021-06-05 22:18:07,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:07,061 INFO L482 AbstractCegarLoop]: Abstraction has 5186 states and 13762 transitions. [2021-06-05 22:18:07,061 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 22:18:07,061 INFO L276 IsEmpty]: Start isEmpty. Operand 5186 states and 13762 transitions. [2021-06-05 22:18:07,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:07,069 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:07,069 INFO L554 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 22:18:07,069 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 22:18:07,069 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:07,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:07,070 INFO L82 PathProgramCache]: Analyzing trace with hash 524989120, now seen corresponding path program 13 times [2021-06-05 22:18:07,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:07,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726193848] [2021-06-05 22:18:07,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:07,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:18:07,212 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:07,212 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726193848] [2021-06-05 22:18:07,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726193848] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:07,212 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:07,212 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 22:18:07,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109424483] [2021-06-05 22:18:07,212 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 22:18:07,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:07,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 22:18:07,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:18:07,213 INFO L87 Difference]: Start difference. First operand 5186 states and 13762 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 22:18:07,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:07,866 INFO L93 Difference]: Finished difference Result 10903 states and 28427 transitions. [2021-06-05 22:18:07,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 22:18:07,866 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 22:18:07,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:07,879 INFO L225 Difference]: With dead ends: 10903 [2021-06-05 22:18:07,880 INFO L226 Difference]: Without dead ends: 10608 [2021-06-05 22:18:07,880 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 282.3ms TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2021-06-05 22:18:07,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10608 states. [2021-06-05 22:18:08,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10608 to 5363. [2021-06-05 22:18:08,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5363 states, 5362 states have (on average 2.6503170458784036) internal successors, (14211), 5362 states have internal predecessors, (14211), 0 states have call successors, (0), 0 states 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 22:18:08,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5363 states to 5363 states and 14211 transitions. [2021-06-05 22:18:08,036 INFO L78 Accepts]: Start accepts. Automaton has 5363 states and 14211 transitions. Word has length 48 [2021-06-05 22:18:08,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:08,036 INFO L482 AbstractCegarLoop]: Abstraction has 5363 states and 14211 transitions. [2021-06-05 22:18:08,037 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 22:18:08,037 INFO L276 IsEmpty]: Start isEmpty. Operand 5363 states and 14211 transitions. [2021-06-05 22:18:08,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:08,047 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:08,047 INFO L554 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 22:18:08,047 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-05 22:18:08,048 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:08,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:08,048 INFO L82 PathProgramCache]: Analyzing trace with hash -100097542, now seen corresponding path program 14 times [2021-06-05 22:18:08,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:08,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052258936] [2021-06-05 22:18:08,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:08,193 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 22:18:08,193 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:08,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052258936] [2021-06-05 22:18:08,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052258936] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:08,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:08,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 22:18:08,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143446927] [2021-06-05 22:18:08,194 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 22:18:08,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:08,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 22:18:08,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-06-05 22:18:08,194 INFO L87 Difference]: Start difference. First operand 5363 states and 14211 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 22:18:08,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:08,518 INFO L93 Difference]: Finished difference Result 8019 states and 20949 transitions. [2021-06-05 22:18:08,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 22:18:08,518 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 22:18:08,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:08,524 INFO L225 Difference]: With dead ends: 8019 [2021-06-05 22:18:08,524 INFO L226 Difference]: Without dead ends: 7736 [2021-06-05 22:18:08,525 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 151.4ms TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-06-05 22:18:08,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7736 states. [2021-06-05 22:18:08,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7736 to 5972. [2021-06-05 22:18:08,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5972 states, 5971 states have (on average 2.6394238820968012) internal successors, (15760), 5971 states have internal predecessors, (15760), 0 states have call successors, (0), 0 states 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 22:18:08,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5972 states to 5972 states and 15760 transitions. [2021-06-05 22:18:08,654 INFO L78 Accepts]: Start accepts. Automaton has 5972 states and 15760 transitions. Word has length 48 [2021-06-05 22:18:08,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:08,654 INFO L482 AbstractCegarLoop]: Abstraction has 5972 states and 15760 transitions. [2021-06-05 22:18:08,654 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 22:18:08,654 INFO L276 IsEmpty]: Start isEmpty. Operand 5972 states and 15760 transitions. [2021-06-05 22:18:08,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:08,661 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:08,661 INFO L554 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 22:18:08,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-05 22:18:08,662 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:08,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:08,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1261941154, now seen corresponding path program 15 times [2021-06-05 22:18:08,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:08,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359417681] [2021-06-05 22:18:08,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:08,749 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 22:18:08,750 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:08,750 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359417681] [2021-06-05 22:18:08,750 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359417681] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:08,750 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:08,750 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:18:08,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326663813] [2021-06-05 22:18:08,751 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:18:08,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:08,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:18:08,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:18:08,751 INFO L87 Difference]: Start difference. First operand 5972 states and 15760 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 22:18:09,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:09,060 INFO L93 Difference]: Finished difference Result 6943 states and 18034 transitions. [2021-06-05 22:18:09,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 22:18:09,061 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 22:18:09,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:09,066 INFO L225 Difference]: With dead ends: 6943 [2021-06-05 22:18:09,066 INFO L226 Difference]: Without dead ends: 6391 [2021-06-05 22:18:09,067 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 132.8ms TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:18:09,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6391 states. [2021-06-05 22:18:09,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6391 to 4834. [2021-06-05 22:18:09,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4834 states, 4833 states have (on average 2.5923856817711566) internal successors, (12529), 4833 states have internal predecessors, (12529), 0 states have call successors, (0), 0 states 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 22:18:09,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4834 states to 4834 states and 12529 transitions. [2021-06-05 22:18:09,161 INFO L78 Accepts]: Start accepts. Automaton has 4834 states and 12529 transitions. Word has length 48 [2021-06-05 22:18:09,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:09,161 INFO L482 AbstractCegarLoop]: Abstraction has 4834 states and 12529 transitions. [2021-06-05 22:18:09,161 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 22:18:09,161 INFO L276 IsEmpty]: Start isEmpty. Operand 4834 states and 12529 transitions. [2021-06-05 22:18:09,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:09,167 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:09,167 INFO L554 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 22:18:09,167 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-05 22:18:09,167 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:09,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:09,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1739586752, now seen corresponding path program 16 times [2021-06-05 22:18:09,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:09,168 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310710304] [2021-06-05 22:18:09,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:09,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:18:09,252 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:09,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310710304] [2021-06-05 22:18:09,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310710304] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:09,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:09,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:18:09,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443724885] [2021-06-05 22:18:09,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:18:09,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:09,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:18:09,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:18:09,253 INFO L87 Difference]: Start difference. First operand 4834 states and 12529 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 22:18:09,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:09,481 INFO L93 Difference]: Finished difference Result 7130 states and 18291 transitions. [2021-06-05 22:18:09,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 22:18:09,482 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 22:18:09,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:09,490 INFO L225 Difference]: With dead ends: 7130 [2021-06-05 22:18:09,491 INFO L226 Difference]: Without dead ends: 6976 [2021-06-05 22:18:09,491 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 115.2ms TimeCoverageRelationStatistics Valid=65, Invalid=91, Unknown=0, NotChecked=0, Total=156 [2021-06-05 22:18:09,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6976 states. [2021-06-05 22:18:09,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6976 to 4545. [2021-06-05 22:18:09,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4545 states, 4544 states have (on average 2.6047535211267605) internal successors, (11836), 4544 states have internal predecessors, (11836), 0 states have call successors, (0), 0 states 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 22:18:09,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4545 states to 4545 states and 11836 transitions. [2021-06-05 22:18:09,607 INFO L78 Accepts]: Start accepts. Automaton has 4545 states and 11836 transitions. Word has length 48 [2021-06-05 22:18:09,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:09,607 INFO L482 AbstractCegarLoop]: Abstraction has 4545 states and 11836 transitions. [2021-06-05 22:18:09,607 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 22:18:09,607 INFO L276 IsEmpty]: Start isEmpty. Operand 4545 states and 11836 transitions. [2021-06-05 22:18:09,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:09,612 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:09,612 INFO L554 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 22:18:09,612 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-05 22:18:09,613 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:09,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:09,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1515232300, now seen corresponding path program 17 times [2021-06-05 22:18:09,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:09,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18056087] [2021-06-05 22:18:09,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:09,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:18:09,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:09,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18056087] [2021-06-05 22:18:09,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18056087] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:09,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:09,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 22:18:09,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923061680] [2021-06-05 22:18:09,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 22:18:09,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:09,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 22:18:09,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:18:09,723 INFO L87 Difference]: Start difference. First operand 4545 states and 11836 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 22:18:09,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:09,953 INFO L93 Difference]: Finished difference Result 5020 states and 12910 transitions. [2021-06-05 22:18:09,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 22:18:09,953 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 22:18:09,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:09,958 INFO L225 Difference]: With dead ends: 5020 [2021-06-05 22:18:09,958 INFO L226 Difference]: Without dead ends: 4701 [2021-06-05 22:18:09,958 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 101.4ms TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-06-05 22:18:09,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4701 states. [2021-06-05 22:18:10,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4701 to 4400. [2021-06-05 22:18:10,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4400 states, 4399 states have (on average 2.613548533757672) internal successors, (11497), 4399 states have internal predecessors, (11497), 0 states have call successors, (0), 0 states 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 22:18:10,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4400 states to 4400 states and 11497 transitions. [2021-06-05 22:18:10,022 INFO L78 Accepts]: Start accepts. Automaton has 4400 states and 11497 transitions. Word has length 48 [2021-06-05 22:18:10,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:10,022 INFO L482 AbstractCegarLoop]: Abstraction has 4400 states and 11497 transitions. [2021-06-05 22:18:10,022 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 22:18:10,022 INFO L276 IsEmpty]: Start isEmpty. Operand 4400 states and 11497 transitions. [2021-06-05 22:18:10,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:10,027 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:10,027 INFO L554 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 22:18:10,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-05 22:18:10,027 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:10,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:10,027 INFO L82 PathProgramCache]: Analyzing trace with hash 76293474, now seen corresponding path program 18 times [2021-06-05 22:18:10,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:10,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110422467] [2021-06-05 22:18:10,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:10,038 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 22:18:10,038 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:10,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110422467] [2021-06-05 22:18:10,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110422467] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:10,038 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:10,038 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 22:18:10,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143643310] [2021-06-05 22:18:10,039 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 22:18:10,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:10,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 22:18:10,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:18:10,039 INFO L87 Difference]: Start difference. First operand 4400 states and 11497 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 22:18:10,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:10,053 INFO L93 Difference]: Finished difference Result 4122 states and 10461 transitions. [2021-06-05 22:18:10,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 22:18:10,053 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 22:18:10,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:10,057 INFO L225 Difference]: With dead ends: 4122 [2021-06-05 22:18:10,057 INFO L226 Difference]: Without dead ends: 4122 [2021-06-05 22:18:10,057 INFO L810 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 22:18:10,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4122 states. [2021-06-05 22:18:10,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4122 to 4018. [2021-06-05 22:18:10,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4018 states, 4017 states have (on average 2.542942494398805) internal successors, (10215), 4017 states have internal predecessors, (10215), 0 states have call successors, (0), 0 states 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 22:18:10,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4018 states to 4018 states and 10215 transitions. [2021-06-05 22:18:10,118 INFO L78 Accepts]: Start accepts. Automaton has 4018 states and 10215 transitions. Word has length 48 [2021-06-05 22:18:10,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:10,118 INFO L482 AbstractCegarLoop]: Abstraction has 4018 states and 10215 transitions. [2021-06-05 22:18:10,118 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 22:18:10,118 INFO L276 IsEmpty]: Start isEmpty. Operand 4018 states and 10215 transitions. [2021-06-05 22:18:10,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:10,123 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:10,123 INFO L554 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 22:18:10,123 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-05 22:18:10,123 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:10,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:10,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1673336162, now seen corresponding path program 19 times [2021-06-05 22:18:10,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:10,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848865167] [2021-06-05 22:18:10,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:10,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:18:10,185 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:10,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848865167] [2021-06-05 22:18:10,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848865167] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:10,186 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:10,186 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:18:10,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832470482] [2021-06-05 22:18:10,187 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:18:10,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:10,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:18:10,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:18:10,187 INFO L87 Difference]: Start difference. First operand 4018 states and 10215 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 22:18:10,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:10,328 INFO L93 Difference]: Finished difference Result 4580 states and 11474 transitions. [2021-06-05 22:18:10,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 22:18:10,328 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 22:18:10,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:10,332 INFO L225 Difference]: With dead ends: 4580 [2021-06-05 22:18:10,332 INFO L226 Difference]: Without dead ends: 4240 [2021-06-05 22:18:10,332 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 116.5ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:18:10,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4240 states. [2021-06-05 22:18:10,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4240 to 3930. [2021-06-05 22:18:10,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3930 states, 3929 states have (on average 2.5283787223212015) internal successors, (9934), 3929 states have internal predecessors, (9934), 0 states have call successors, (0), 0 states 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 22:18:10,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3930 states to 3930 states and 9934 transitions. [2021-06-05 22:18:10,382 INFO L78 Accepts]: Start accepts. Automaton has 3930 states and 9934 transitions. Word has length 48 [2021-06-05 22:18:10,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:10,382 INFO L482 AbstractCegarLoop]: Abstraction has 3930 states and 9934 transitions. [2021-06-05 22:18:10,382 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 22:18:10,382 INFO L276 IsEmpty]: Start isEmpty. Operand 3930 states and 9934 transitions. [2021-06-05 22:18:10,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:10,385 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:10,385 INFO L554 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 22:18:10,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-05 22:18:10,385 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:10,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:10,386 INFO L82 PathProgramCache]: Analyzing trace with hash -869937714, now seen corresponding path program 20 times [2021-06-05 22:18:10,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:10,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293274310] [2021-06-05 22:18:10,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:10,470 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 22:18:10,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:10,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293274310] [2021-06-05 22:18:10,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293274310] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:10,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:10,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 22:18:10,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618889734] [2021-06-05 22:18:10,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 22:18:10,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:10,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 22:18:10,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:18:10,472 INFO L87 Difference]: Start difference. First operand 3930 states and 9934 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 22:18:10,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:10,772 INFO L93 Difference]: Finished difference Result 5920 states and 14773 transitions. [2021-06-05 22:18:10,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 22:18:10,772 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 22:18:10,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:10,777 INFO L225 Difference]: With dead ends: 5920 [2021-06-05 22:18:10,777 INFO L226 Difference]: Without dead ends: 5762 [2021-06-05 22:18:10,777 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 127.4ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-06-05 22:18:10,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5762 states. [2021-06-05 22:18:10,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5762 to 3948. [2021-06-05 22:18:10,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3948 states, 3947 states have (on average 2.5267291613883964) internal successors, (9973), 3947 states have internal predecessors, (9973), 0 states have call successors, (0), 0 states 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 22:18:10,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 9973 transitions. [2021-06-05 22:18:10,854 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 9973 transitions. Word has length 48 [2021-06-05 22:18:10,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:10,855 INFO L482 AbstractCegarLoop]: Abstraction has 3948 states and 9973 transitions. [2021-06-05 22:18:10,855 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 22:18:10,855 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 9973 transitions. [2021-06-05 22:18:10,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:10,860 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:10,860 INFO L554 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 22:18:10,860 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-05 22:18:10,860 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:10,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:10,861 INFO L82 PathProgramCache]: Analyzing trace with hash -221230618, now seen corresponding path program 21 times [2021-06-05 22:18:10,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:10,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886450257] [2021-06-05 22:18:10,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:10,956 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 22:18:10,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:10,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886450257] [2021-06-05 22:18:10,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886450257] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:10,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:10,957 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:18:10,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961868870] [2021-06-05 22:18:10,957 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:18:10,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:10,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:18:10,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:18:10,958 INFO L87 Difference]: Start difference. First operand 3948 states and 9973 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 22:18:11,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:11,119 INFO L93 Difference]: Finished difference Result 5839 states and 14657 transitions. [2021-06-05 22:18:11,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 22:18:11,119 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 22:18:11,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:11,123 INFO L225 Difference]: With dead ends: 5839 [2021-06-05 22:18:11,123 INFO L226 Difference]: Without dead ends: 5775 [2021-06-05 22:18:11,124 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 92.9ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:18:11,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5775 states. [2021-06-05 22:18:11,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5775 to 4579. [2021-06-05 22:18:11,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4579 states, 4578 states have (on average 2.5190039318479687) internal successors, (11532), 4578 states have internal predecessors, (11532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:18:11,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4579 states to 4579 states and 11532 transitions. [2021-06-05 22:18:11,201 INFO L78 Accepts]: Start accepts. Automaton has 4579 states and 11532 transitions. Word has length 48 [2021-06-05 22:18:11,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:11,202 INFO L482 AbstractCegarLoop]: Abstraction has 4579 states and 11532 transitions. [2021-06-05 22:18:11,202 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 22:18:11,202 INFO L276 IsEmpty]: Start isEmpty. Operand 4579 states and 11532 transitions. [2021-06-05 22:18:11,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:11,206 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:11,207 INFO L554 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 22:18:11,207 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-05 22:18:11,207 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:11,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:11,207 INFO L82 PathProgramCache]: Analyzing trace with hash 773664548, now seen corresponding path program 22 times [2021-06-05 22:18:11,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:11,207 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662714318] [2021-06-05 22:18:11,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:11,291 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 22:18:11,291 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:11,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662714318] [2021-06-05 22:18:11,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662714318] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:11,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:11,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:18:11,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559877632] [2021-06-05 22:18:11,292 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:18:11,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:11,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:18:11,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:18:11,292 INFO L87 Difference]: Start difference. First operand 4579 states and 11532 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 22:18:11,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:11,472 INFO L93 Difference]: Finished difference Result 5245 states and 13073 transitions. [2021-06-05 22:18:11,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 22:18:11,473 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 22:18:11,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:11,478 INFO L225 Difference]: With dead ends: 5245 [2021-06-05 22:18:11,478 INFO L226 Difference]: Without dead ends: 5047 [2021-06-05 22:18:11,478 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 88.2ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:18:11,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5047 states. [2021-06-05 22:18:11,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5047 to 4469. [2021-06-05 22:18:11,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4469 states, 4468 states have (on average 2.514547896150403) internal successors, (11235), 4468 states have internal predecessors, (11235), 0 states have call successors, (0), 0 states 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 22:18:11,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 11235 transitions. [2021-06-05 22:18:11,548 INFO L78 Accepts]: Start accepts. Automaton has 4469 states and 11235 transitions. Word has length 48 [2021-06-05 22:18:11,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:11,548 INFO L482 AbstractCegarLoop]: Abstraction has 4469 states and 11235 transitions. [2021-06-05 22:18:11,548 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 22:18:11,548 INFO L276 IsEmpty]: Start isEmpty. Operand 4469 states and 11235 transitions. [2021-06-05 22:18:11,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:11,553 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:11,553 INFO L554 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 22:18:11,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-05 22:18:11,554 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:11,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:11,554 INFO L82 PathProgramCache]: Analyzing trace with hash -458909894, now seen corresponding path program 23 times [2021-06-05 22:18:11,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:11,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223565602] [2021-06-05 22:18:11,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:11,613 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 22:18:11,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:11,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223565602] [2021-06-05 22:18:11,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223565602] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:11,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:11,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:18:11,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798808152] [2021-06-05 22:18:11,614 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:18:11,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:11,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:18:11,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:18:11,615 INFO L87 Difference]: Start difference. First operand 4469 states and 11235 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 22:18:11,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:11,754 INFO L93 Difference]: Finished difference Result 4805 states and 11947 transitions. [2021-06-05 22:18:11,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 22:18:11,754 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 22:18:11,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:11,759 INFO L225 Difference]: With dead ends: 4805 [2021-06-05 22:18:11,759 INFO L226 Difference]: Without dead ends: 4711 [2021-06-05 22:18:11,759 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 110.7ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:18:11,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4711 states. [2021-06-05 22:18:11,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4711 to 4449. [2021-06-05 22:18:11,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4449 states, 4448 states have (on average 2.51011690647482) internal successors, (11165), 4448 states have internal predecessors, (11165), 0 states have call successors, (0), 0 states 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 22:18:11,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4449 states to 4449 states and 11165 transitions. [2021-06-05 22:18:11,819 INFO L78 Accepts]: Start accepts. Automaton has 4449 states and 11165 transitions. Word has length 48 [2021-06-05 22:18:11,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:11,819 INFO L482 AbstractCegarLoop]: Abstraction has 4449 states and 11165 transitions. [2021-06-05 22:18:11,819 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 22:18:11,819 INFO L276 IsEmpty]: Start isEmpty. Operand 4449 states and 11165 transitions. [2021-06-05 22:18:11,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:11,823 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:11,823 INFO L554 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 22:18:11,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-05 22:18:11,824 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:11,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:11,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1054099754, now seen corresponding path program 24 times [2021-06-05 22:18:11,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:11,824 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039591120] [2021-06-05 22:18:11,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:11,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:11,889 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 22:18:11,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:11,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039591120] [2021-06-05 22:18:11,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039591120] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:11,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:11,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:18:11,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462232497] [2021-06-05 22:18:11,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:18:11,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:11,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:18:11,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:18:11,890 INFO L87 Difference]: Start difference. First operand 4449 states and 11165 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 22:18:12,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:12,060 INFO L93 Difference]: Finished difference Result 4760 states and 11813 transitions. [2021-06-05 22:18:12,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 22:18:12,061 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 22:18:12,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:12,065 INFO L225 Difference]: With dead ends: 4760 [2021-06-05 22:18:12,065 INFO L226 Difference]: Without dead ends: 4704 [2021-06-05 22:18:12,066 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 71.9ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:18:12,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4704 states. [2021-06-05 22:18:12,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4704 to 4374. [2021-06-05 22:18:12,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4374 states, 4373 states have (on average 2.499885662016922) internal successors, (10932), 4373 states have internal predecessors, (10932), 0 states have call successors, (0), 0 states 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 22:18:12,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4374 states to 4374 states and 10932 transitions. [2021-06-05 22:18:12,119 INFO L78 Accepts]: Start accepts. Automaton has 4374 states and 10932 transitions. Word has length 48 [2021-06-05 22:18:12,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:12,119 INFO L482 AbstractCegarLoop]: Abstraction has 4374 states and 10932 transitions. [2021-06-05 22:18:12,119 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 22:18:12,119 INFO L276 IsEmpty]: Start isEmpty. Operand 4374 states and 10932 transitions. [2021-06-05 22:18:12,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:12,123 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:12,123 INFO L554 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 22:18:12,123 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-05 22:18:12,124 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:12,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:12,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1231787908, now seen corresponding path program 25 times [2021-06-05 22:18:12,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:12,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374081577] [2021-06-05 22:18:12,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:12,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:18:12,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:12,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374081577] [2021-06-05 22:18:12,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374081577] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:12,204 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:12,204 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:18:12,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060616820] [2021-06-05 22:18:12,204 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:18:12,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:12,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:18:12,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:18:12,205 INFO L87 Difference]: Start difference. First operand 4374 states and 10932 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 22:18:12,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:12,378 INFO L93 Difference]: Finished difference Result 4909 states and 12140 transitions. [2021-06-05 22:18:12,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 22:18:12,378 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 22:18:12,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:12,384 INFO L225 Difference]: With dead ends: 4909 [2021-06-05 22:18:12,384 INFO L226 Difference]: Without dead ends: 4841 [2021-06-05 22:18:12,385 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 87.7ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:18:12,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4841 states. [2021-06-05 22:18:12,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4841 to 4306. [2021-06-05 22:18:12,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4306 states, 4305 states have (on average 2.4961672473867598) internal successors, (10746), 4305 states have internal predecessors, (10746), 0 states have call successors, (0), 0 states 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 22:18:12,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4306 states to 4306 states and 10746 transitions. [2021-06-05 22:18:12,461 INFO L78 Accepts]: Start accepts. Automaton has 4306 states and 10746 transitions. Word has length 48 [2021-06-05 22:18:12,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:12,461 INFO L482 AbstractCegarLoop]: Abstraction has 4306 states and 10746 transitions. [2021-06-05 22:18:12,461 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 22:18:12,461 INFO L276 IsEmpty]: Start isEmpty. Operand 4306 states and 10746 transitions. [2021-06-05 22:18:12,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:12,465 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:12,465 INFO L554 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 22:18:12,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-05 22:18:12,466 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:12,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:12,466 INFO L82 PathProgramCache]: Analyzing trace with hash -2068284222, now seen corresponding path program 26 times [2021-06-05 22:18:12,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:12,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115207383] [2021-06-05 22:18:12,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:12,548 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 22:18:12,549 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:12,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115207383] [2021-06-05 22:18:12,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115207383] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:12,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:12,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:18:12,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974373677] [2021-06-05 22:18:12,549 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:18:12,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:12,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:18:12,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:18:12,550 INFO L87 Difference]: Start difference. First operand 4306 states and 10746 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 22:18:12,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:12,727 INFO L93 Difference]: Finished difference Result 4475 states and 10977 transitions. [2021-06-05 22:18:12,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 22:18:12,728 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 22:18:12,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:12,732 INFO L225 Difference]: With dead ends: 4475 [2021-06-05 22:18:12,732 INFO L226 Difference]: Without dead ends: 4280 [2021-06-05 22:18:12,732 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 84.8ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:18:12,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4280 states. [2021-06-05 22:18:12,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4280 to 3374. [2021-06-05 22:18:12,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3374 states, 3373 states have (on average 2.4841387488882303) internal successors, (8379), 3373 states have internal predecessors, (8379), 0 states have call successors, (0), 0 states 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 22:18:12,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3374 states to 3374 states and 8379 transitions. [2021-06-05 22:18:12,797 INFO L78 Accepts]: Start accepts. Automaton has 3374 states and 8379 transitions. Word has length 48 [2021-06-05 22:18:12,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:12,797 INFO L482 AbstractCegarLoop]: Abstraction has 3374 states and 8379 transitions. [2021-06-05 22:18:12,797 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 22:18:12,797 INFO L276 IsEmpty]: Start isEmpty. Operand 3374 states and 8379 transitions. [2021-06-05 22:18:12,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:12,800 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:12,801 INFO L554 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 22:18:12,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-05 22:18:12,801 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:12,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:12,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1838280150, now seen corresponding path program 27 times [2021-06-05 22:18:12,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:12,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626972213] [2021-06-05 22:18:12,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:12,881 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 22:18:12,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:12,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626972213] [2021-06-05 22:18:12,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626972213] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:12,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:12,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:18:12,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132952009] [2021-06-05 22:18:12,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:18:12,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:12,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:18:12,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:18:12,882 INFO L87 Difference]: Start difference. First operand 3374 states and 8379 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 22:18:13,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:13,006 INFO L93 Difference]: Finished difference Result 4310 states and 10585 transitions. [2021-06-05 22:18:13,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 22:18:13,006 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 22:18:13,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:13,011 INFO L225 Difference]: With dead ends: 4310 [2021-06-05 22:18:13,011 INFO L226 Difference]: Without dead ends: 4260 [2021-06-05 22:18:13,011 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:18:13,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4260 states. [2021-06-05 22:18:13,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4260 to 3372. [2021-06-05 22:18:13,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3372 states, 3371 states have (on average 2.483239394838327) internal successors, (8371), 3371 states have internal predecessors, (8371), 0 states have call successors, (0), 0 states 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 22:18:13,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3372 states to 3372 states and 8371 transitions. [2021-06-05 22:18:13,079 INFO L78 Accepts]: Start accepts. Automaton has 3372 states and 8371 transitions. Word has length 48 [2021-06-05 22:18:13,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:13,079 INFO L482 AbstractCegarLoop]: Abstraction has 3372 states and 8371 transitions. [2021-06-05 22:18:13,079 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 22:18:13,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3372 states and 8371 transitions. [2021-06-05 22:18:13,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:13,083 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:13,083 INFO L554 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 22:18:13,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-05 22:18:13,083 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:13,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:13,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1498241870, now seen corresponding path program 28 times [2021-06-05 22:18:13,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:13,084 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376887175] [2021-06-05 22:18:13,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:13,155 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 22:18:13,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:13,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376887175] [2021-06-05 22:18:13,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376887175] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:13,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:13,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:18:13,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689064845] [2021-06-05 22:18:13,156 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:18:13,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:13,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:18:13,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:18:13,157 INFO L87 Difference]: Start difference. First operand 3372 states and 8371 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 22:18:13,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:13,303 INFO L93 Difference]: Finished difference Result 3775 states and 9256 transitions. [2021-06-05 22:18:13,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 22:18:13,303 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 22:18:13,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:13,308 INFO L225 Difference]: With dead ends: 3775 [2021-06-05 22:18:13,308 INFO L226 Difference]: Without dead ends: 3480 [2021-06-05 22:18:13,308 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 124.6ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:18:13,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2021-06-05 22:18:13,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 3257. [2021-06-05 22:18:13,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3257 states, 3256 states have (on average 2.466830466830467) internal successors, (8032), 3256 states have internal predecessors, (8032), 0 states have call successors, (0), 0 states 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 22:18:13,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3257 states to 3257 states and 8032 transitions. [2021-06-05 22:18:13,366 INFO L78 Accepts]: Start accepts. Automaton has 3257 states and 8032 transitions. Word has length 48 [2021-06-05 22:18:13,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:13,367 INFO L482 AbstractCegarLoop]: Abstraction has 3257 states and 8032 transitions. [2021-06-05 22:18:13,367 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 22:18:13,367 INFO L276 IsEmpty]: Start isEmpty. Operand 3257 states and 8032 transitions. [2021-06-05 22:18:13,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:13,370 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:13,370 INFO L554 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 22:18:13,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-05 22:18:13,370 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:13,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:13,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1704921652, now seen corresponding path program 29 times [2021-06-05 22:18:13,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:13,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5747364] [2021-06-05 22:18:13,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:13,498 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 22:18:13,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:13,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5747364] [2021-06-05 22:18:13,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5747364] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:13,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:13,499 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 22:18:13,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787613362] [2021-06-05 22:18:13,500 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 22:18:13,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:13,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 22:18:13,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:18:13,500 INFO L87 Difference]: Start difference. First operand 3257 states and 8032 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 22:18:13,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:13,709 INFO L93 Difference]: Finished difference Result 4870 states and 11869 transitions. [2021-06-05 22:18:13,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 22:18:13,710 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 22:18:13,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:13,713 INFO L225 Difference]: With dead ends: 4870 [2021-06-05 22:18:13,713 INFO L226 Difference]: Without dead ends: 4564 [2021-06-05 22:18:13,713 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 145.9ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-06-05 22:18:13,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2021-06-05 22:18:13,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 3690. [2021-06-05 22:18:13,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3690 states, 3689 states have (on average 2.4407698563296285) internal successors, (9004), 3689 states have internal predecessors, (9004), 0 states have call successors, (0), 0 states 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 22:18:13,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3690 states to 3690 states and 9004 transitions. [2021-06-05 22:18:13,762 INFO L78 Accepts]: Start accepts. Automaton has 3690 states and 9004 transitions. Word has length 48 [2021-06-05 22:18:13,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:13,762 INFO L482 AbstractCegarLoop]: Abstraction has 3690 states and 9004 transitions. [2021-06-05 22:18:13,762 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 22:18:13,762 INFO L276 IsEmpty]: Start isEmpty. Operand 3690 states and 9004 transitions. [2021-06-05 22:18:13,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:13,766 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:13,766 INFO L554 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 22:18:13,766 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-05 22:18:13,766 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:13,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:13,766 INFO L82 PathProgramCache]: Analyzing trace with hash 527044882, now seen corresponding path program 30 times [2021-06-05 22:18:13,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:13,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280861586] [2021-06-05 22:18:13,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:13,863 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 22:18:13,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:13,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280861586] [2021-06-05 22:18:13,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280861586] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:13,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:13,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 22:18:13,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426417084] [2021-06-05 22:18:13,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 22:18:13,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:13,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 22:18:13,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:18:13,864 INFO L87 Difference]: Start difference. First operand 3690 states and 9004 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 22:18:14,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:14,095 INFO L93 Difference]: Finished difference Result 4275 states and 10344 transitions. [2021-06-05 22:18:14,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 22:18:14,096 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 22:18:14,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:14,100 INFO L225 Difference]: With dead ends: 4275 [2021-06-05 22:18:14,100 INFO L226 Difference]: Without dead ends: 3923 [2021-06-05 22:18:14,100 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 136.2ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-06-05 22:18:14,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3923 states. [2021-06-05 22:18:14,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3923 to 3363. [2021-06-05 22:18:14,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3363 states, 3362 states have (on average 2.43575252825699) internal successors, (8189), 3362 states have internal predecessors, (8189), 0 states have call successors, (0), 0 states 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 22:18:14,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 8189 transitions. [2021-06-05 22:18:14,163 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 8189 transitions. Word has length 48 [2021-06-05 22:18:14,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:14,163 INFO L482 AbstractCegarLoop]: Abstraction has 3363 states and 8189 transitions. [2021-06-05 22:18:14,163 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 22:18:14,163 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 8189 transitions. [2021-06-05 22:18:14,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:14,167 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:14,167 INFO L554 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 22:18:14,167 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-05 22:18:14,167 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:14,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:14,168 INFO L82 PathProgramCache]: Analyzing trace with hash -651091468, now seen corresponding path program 31 times [2021-06-05 22:18:14,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:14,168 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021232660] [2021-06-05 22:18:14,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:14,290 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 22:18:14,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:14,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021232660] [2021-06-05 22:18:14,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021232660] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:14,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:14,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 22:18:14,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907780532] [2021-06-05 22:18:14,291 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 22:18:14,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:14,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 22:18:14,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:18:14,292 INFO L87 Difference]: Start difference. First operand 3363 states and 8189 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 22:18:14,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:14,496 INFO L93 Difference]: Finished difference Result 3934 states and 9488 transitions. [2021-06-05 22:18:14,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 22:18:14,497 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 22:18:14,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:14,500 INFO L225 Difference]: With dead ends: 3934 [2021-06-05 22:18:14,500 INFO L226 Difference]: Without dead ends: 3721 [2021-06-05 22:18:14,500 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 134.5ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-06-05 22:18:14,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3721 states. [2021-06-05 22:18:14,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3721 to 3363. [2021-06-05 22:18:14,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3363 states, 3362 states have (on average 2.4146341463414633) internal successors, (8118), 3362 states have internal predecessors, (8118), 0 states have call successors, (0), 0 states 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 22:18:14,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 8118 transitions. [2021-06-05 22:18:14,555 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 8118 transitions. Word has length 48 [2021-06-05 22:18:14,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:14,555 INFO L482 AbstractCegarLoop]: Abstraction has 3363 states and 8118 transitions. [2021-06-05 22:18:14,555 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 22:18:14,555 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 8118 transitions. [2021-06-05 22:18:14,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:14,559 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:14,559 INFO L554 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 22:18:14,559 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-05 22:18:14,559 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:14,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:14,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1828968238, now seen corresponding path program 32 times [2021-06-05 22:18:14,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:14,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120847396] [2021-06-05 22:18:14,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:14,655 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 22:18:14,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:14,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120847396] [2021-06-05 22:18:14,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120847396] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:14,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:14,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 22:18:14,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016745662] [2021-06-05 22:18:14,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 22:18:14,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:14,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 22:18:14,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:18:14,657 INFO L87 Difference]: Start difference. First operand 3363 states and 8118 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 22:18:14,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:14,842 INFO L93 Difference]: Finished difference Result 3710 states and 8881 transitions. [2021-06-05 22:18:14,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 22:18:14,842 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 22:18:14,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:14,845 INFO L225 Difference]: With dead ends: 3710 [2021-06-05 22:18:14,845 INFO L226 Difference]: Without dead ends: 2869 [2021-06-05 22:18:14,846 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 123.5ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-06-05 22:18:14,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2021-06-05 22:18:14,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 2556. [2021-06-05 22:18:14,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2556 states, 2555 states have (on average 2.3839530332681016) internal successors, (6091), 2555 states have internal predecessors, (6091), 0 states have call successors, (0), 0 states 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 22:18:14,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2556 states to 2556 states and 6091 transitions. [2021-06-05 22:18:14,889 INFO L78 Accepts]: Start accepts. Automaton has 2556 states and 6091 transitions. Word has length 48 [2021-06-05 22:18:14,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:14,889 INFO L482 AbstractCegarLoop]: Abstraction has 2556 states and 6091 transitions. [2021-06-05 22:18:14,889 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 22:18:14,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2556 states and 6091 transitions. [2021-06-05 22:18:14,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:14,892 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:14,892 INFO L554 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 22:18:14,892 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-05 22:18:14,892 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:14,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:14,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1083335310, now seen corresponding path program 33 times [2021-06-05 22:18:14,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:14,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476988127] [2021-06-05 22:18:14,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:14,976 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 22:18:14,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:14,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476988127] [2021-06-05 22:18:14,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476988127] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:14,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:14,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:18:14,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707758386] [2021-06-05 22:18:14,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:18:14,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:14,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:18:14,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:18:14,978 INFO L87 Difference]: Start difference. First operand 2556 states and 6091 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 22:18:15,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:15,121 INFO L93 Difference]: Finished difference Result 2804 states and 6608 transitions. [2021-06-05 22:18:15,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 22:18:15,121 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 22:18:15,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:15,124 INFO L225 Difference]: With dead ends: 2804 [2021-06-05 22:18:15,124 INFO L226 Difference]: Without dead ends: 2292 [2021-06-05 22:18:15,126 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 119.6ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:18:15,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2292 states. [2021-06-05 22:18:15,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2292 to 2017. [2021-06-05 22:18:15,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2017 states, 2016 states have (on average 2.3452380952380953) internal successors, (4728), 2016 states have internal predecessors, (4728), 0 states have call successors, (0), 0 states 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 22:18:15,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 4728 transitions. [2021-06-05 22:18:15,158 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 4728 transitions. Word has length 48 [2021-06-05 22:18:15,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:15,158 INFO L482 AbstractCegarLoop]: Abstraction has 2017 states and 4728 transitions. [2021-06-05 22:18:15,158 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 22:18:15,158 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 4728 transitions. [2021-06-05 22:18:15,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:15,160 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:15,160 INFO L554 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 22:18:15,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-05 22:18:15,160 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:15,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:15,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1742602862, now seen corresponding path program 34 times [2021-06-05 22:18:15,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:15,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531347643] [2021-06-05 22:18:15,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:15,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:18:15,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:15,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531347643] [2021-06-05 22:18:15,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531347643] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:15,236 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:15,237 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 22:18:15,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775741068] [2021-06-05 22:18:15,237 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 22:18:15,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:15,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 22:18:15,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:18:15,237 INFO L87 Difference]: Start difference. First operand 2017 states and 4728 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 22:18:15,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:15,371 INFO L93 Difference]: Finished difference Result 1920 states and 4429 transitions. [2021-06-05 22:18:15,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 22:18:15,371 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 22:18:15,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:15,374 INFO L225 Difference]: With dead ends: 1920 [2021-06-05 22:18:15,374 INFO L226 Difference]: Without dead ends: 1704 [2021-06-05 22:18:15,375 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 71.0ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:18:15,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2021-06-05 22:18:15,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1704. [2021-06-05 22:18:15,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1703 states have (on average 2.312977099236641) internal successors, (3939), 1703 states have internal predecessors, (3939), 0 states have call successors, (0), 0 states 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 22:18:15,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 3939 transitions. [2021-06-05 22:18:15,397 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 3939 transitions. Word has length 48 [2021-06-05 22:18:15,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:15,397 INFO L482 AbstractCegarLoop]: Abstraction has 1704 states and 3939 transitions. [2021-06-05 22:18:15,397 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 22:18:15,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 3939 transitions. [2021-06-05 22:18:15,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:15,398 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:15,398 INFO L554 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 22:18:15,398 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-05 22:18:15,398 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:15,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:15,399 INFO L82 PathProgramCache]: Analyzing trace with hash 668037194, now seen corresponding path program 35 times [2021-06-05 22:18:15,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:15,399 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935859516] [2021-06-05 22:18:15,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:15,485 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 22:18:15,485 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:15,485 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935859516] [2021-06-05 22:18:15,485 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935859516] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:15,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:15,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 22:18:15,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409106184] [2021-06-05 22:18:15,486 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 22:18:15,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:15,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 22:18:15,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:18:15,487 INFO L87 Difference]: Start difference. First operand 1704 states and 3939 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 22:18:15,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:15,574 INFO L93 Difference]: Finished difference Result 2079 states and 4726 transitions. [2021-06-05 22:18:15,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 22:18:15,574 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 22:18:15,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:15,576 INFO L225 Difference]: With dead ends: 2079 [2021-06-05 22:18:15,576 INFO L226 Difference]: Without dead ends: 1763 [2021-06-05 22:18:15,576 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 45.5ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:18:15,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2021-06-05 22:18:15,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1561. [2021-06-05 22:18:15,590 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 22:18:15,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 3555 transitions. [2021-06-05 22:18:15,592 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 3555 transitions. Word has length 48 [2021-06-05 22:18:15,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:15,592 INFO L482 AbstractCegarLoop]: Abstraction has 1561 states and 3555 transitions. [2021-06-05 22:18:15,592 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 22:18:15,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 3555 transitions. [2021-06-05 22:18:15,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:15,593 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:15,593 INFO L554 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 22:18:15,593 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-05 22:18:15,593 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:15,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:15,594 INFO L82 PathProgramCache]: Analyzing trace with hash -641387982, now seen corresponding path program 36 times [2021-06-05 22:18:15,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:15,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275337834] [2021-06-05 22:18:15,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:15,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:18:15,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:15,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275337834] [2021-06-05 22:18:15,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275337834] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:15,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:15,655 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:18:15,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86033813] [2021-06-05 22:18:15,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:18:15,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:15,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:18:15,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:18:15,656 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 22:18:15,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:15,759 INFO L93 Difference]: Finished difference Result 1567 states and 3496 transitions. [2021-06-05 22:18:15,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 22:18:15,759 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 22:18:15,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:15,760 INFO L225 Difference]: With dead ends: 1567 [2021-06-05 22:18:15,760 INFO L226 Difference]: Without dead ends: 1281 [2021-06-05 22:18:15,760 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 55.7ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:18:15,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-06-05 22:18:15,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1281. [2021-06-05 22:18:15,774 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 22:18:15,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 2846 transitions. [2021-06-05 22:18:15,776 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 2846 transitions. Word has length 48 [2021-06-05 22:18:15,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:15,776 INFO L482 AbstractCegarLoop]: Abstraction has 1281 states and 2846 transitions. [2021-06-05 22:18:15,776 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 22:18:15,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 2846 transitions. [2021-06-05 22:18:15,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:15,778 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:15,778 INFO L554 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 22:18:15,778 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-05 22:18:15,778 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:15,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:15,778 INFO L82 PathProgramCache]: Analyzing trace with hash 916459414, now seen corresponding path program 37 times [2021-06-05 22:18:15,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:15,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198366669] [2021-06-05 22:18:15,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:15,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:18:15,860 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:15,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198366669] [2021-06-05 22:18:15,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198366669] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:15,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:15,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 22:18:15,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017989163] [2021-06-05 22:18:15,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 22:18:15,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:15,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 22:18:15,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:18:15,861 INFO L87 Difference]: Start difference. First operand 1281 states and 2846 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 22:18:16,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:16,093 INFO L93 Difference]: Finished difference Result 1089 states and 2368 transitions. [2021-06-05 22:18:16,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 22:18:16,093 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 22:18:16,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:16,094 INFO L225 Difference]: With dead ends: 1089 [2021-06-05 22:18:16,094 INFO L226 Difference]: Without dead ends: 489 [2021-06-05 22:18:16,094 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 134.7ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-06-05 22:18:16,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-06-05 22:18:16,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 363. [2021-06-05 22:18:16,097 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 22:18:16,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 770 transitions. [2021-06-05 22:18:16,098 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 770 transitions. Word has length 48 [2021-06-05 22:18:16,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:16,098 INFO L482 AbstractCegarLoop]: Abstraction has 363 states and 770 transitions. [2021-06-05 22:18:16,098 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 22:18:16,098 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 770 transitions. [2021-06-05 22:18:16,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 22:18:16,098 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:18:16,098 INFO L554 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 22:18:16,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-05 22:18:16,098 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:18:16,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:18:16,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1286069184, now seen corresponding path program 38 times [2021-06-05 22:18:16,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:18:16,099 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252771933] [2021-06-05 22:18:16,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:18:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:18:16,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:18:16,176 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:18:16,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252771933] [2021-06-05 22:18:16,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252771933] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:18:16,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:18:16,177 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:18:16,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400713409] [2021-06-05 22:18:16,177 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:18:16,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:18:16,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:18:16,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:18:16,177 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 22:18:16,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:18:16,296 INFO L93 Difference]: Finished difference Result 343 states and 732 transitions. [2021-06-05 22:18:16,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 22:18:16,296 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 22:18:16,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:18:16,296 INFO L225 Difference]: With dead ends: 343 [2021-06-05 22:18:16,296 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 22:18:16,297 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 84.2ms TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 22:18:16,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 22:18:16,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 22:18:16,297 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 22:18:16,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 22:18:16,297 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2021-06-05 22:18:16,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:18:16,297 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 22:18:16,297 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 22:18:16,297 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 22:18:16,297 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 22:18:16,298 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-05 22:18:16,300 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 22:18:16,301 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 10:18:16 BasicIcfg [2021-06-05 22:18:16,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 22:18:16,302 INFO L168 Benchmark]: Toolchain (without parser) took 18167.13 ms. Allocated memory was 350.2 MB in the beginning and 820.0 MB in the end (delta: 469.8 MB). Free memory was 329.4 MB in the beginning and 512.2 MB in the end (delta: -182.8 MB). Peak memory consumption was 287.1 MB. Max. memory is 16.0 GB. [2021-06-05 22:18:16,302 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 350.2 MB. Free memory is still 330.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 22:18:16,302 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.04 ms. Allocated memory is still 350.2 MB. Free memory was 329.4 MB in the beginning and 327.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 22:18:16,302 INFO L168 Benchmark]: Boogie Preprocessor took 27.49 ms. Allocated memory is still 350.2 MB. Free memory was 327.9 MB in the beginning and 326.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 22:18:16,302 INFO L168 Benchmark]: RCFGBuilder took 258.47 ms. Allocated memory is still 350.2 MB. Free memory was 326.8 MB in the beginning and 313.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-05 22:18:16,302 INFO L168 Benchmark]: TraceAbstraction took 17851.08 ms. Allocated memory was 350.2 MB in the beginning and 820.0 MB in the end (delta: 469.8 MB). Free memory was 312.7 MB in the beginning and 512.2 MB in the end (delta: -199.6 MB). Peak memory consumption was 270.3 MB. Max. memory is 16.0 GB. [2021-06-05 22:18:16,303 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 0.12 ms. Allocated memory is still 350.2 MB. Free memory is still 330.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.04 ms. Allocated memory is still 350.2 MB. Free memory was 329.4 MB in the beginning and 327.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.49 ms. Allocated memory is still 350.2 MB. Free memory was 327.9 MB in the beginning and 326.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 258.47 ms. Allocated memory is still 350.2 MB. Free memory was 326.8 MB in the beginning and 313.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 17851.08 ms. Allocated memory was 350.2 MB in the beginning and 820.0 MB in the end (delta: 469.8 MB). Free memory was 312.7 MB in the beginning and 512.2 MB in the end (delta: -199.6 MB). Peak memory consumption was 270.3 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 for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 99 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 17749.4ms, OverallIterations: 38, TraceHistogramMax: 1, EmptinessCheckTime: 252.7ms, AutomataDifference: 9409.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 251.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3916 SDtfs, 6892 SDslu, 14639 SDs, 0 SdLazy, 8660 SolverSat, 1653 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4714.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 494 GetRequests, 54 SyntacticMatches, 26 SemanticMatches, 414 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 4564.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5972occurred in iteration=14, InterpolantAutomatonStates: 411, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3362.6ms AutomataMinimizationTime, 38 MinimizatonAttempts, 40687 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 61.9ms SsaConstructionTime, 358.2ms SatisfiabilityAnalysisTime, 3748.3ms InterpolantComputationTime, 1824 NumberOfCodeBlocks, 1824 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 1786 ConstructedInterpolants, 0 QuantifiedInterpolants, 10400 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 38 InterpolantComputations, 38 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...