/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 17:52:49,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 17:52:49,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 17:52:49,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-09 17:52:49,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 17:52:49,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 17:52:49,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 17:52:49,552 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 [2021-07-09 17:52:49,597 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 17:52:49,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 17:52:49,597 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-09 17:52:49,597 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-09 17:52:49,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 17:52:49,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 17:52:49,600 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 17:52:49,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 17:52:49,600 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 17:52:49,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 17:52:49,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 17:52:49,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 17:52:49,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 17:52:49,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 17:52:49,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 17:52:49,602 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 17:52:49,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 17:52:49,602 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 17:52:49,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 17:52:49,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 17:52:49,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 17:52:49,603 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 17:52:49,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 17:52:49,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 17:52:49,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 17:52:49,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 17:52:49,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 17:52:49,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 17:52:49,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 17:52:49,604 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 17:52:49,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 17:52:49,604 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 17:52:49,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 17:52:49,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 17:52:49,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 17:52:49,928 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 17:52:49,930 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 17:52:49,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl [2021-07-09 17:52:49,931 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl' [2021-07-09 17:52:49,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 17:52:49,966 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 17:52:49,967 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 17:52:49,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 17:52:49,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 17:52:49,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:52:49" (1/1) ... [2021-07-09 17:52:49,982 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:52:49" (1/1) ... [2021-07-09 17:52:49,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 17:52:49,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 17:52:49,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 17:52:49,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 17:52:49,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:52:49" (1/1) ... [2021-07-09 17:52:49,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:52:49" (1/1) ... [2021-07-09 17:52:50,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:52:49" (1/1) ... [2021-07-09 17:52:50,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:52:49" (1/1) ... [2021-07-09 17:52:50,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:52:49" (1/1) ... [2021-07-09 17:52:50,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:52:49" (1/1) ... [2021-07-09 17:52:50,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:52:49" (1/1) ... [2021-07-09 17:52:50,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 17:52:50,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 17:52:50,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 17:52:50,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 17:52:50,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:52:49" (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 [2021-07-09 17:52:50,089 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 17:52:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 17:52:50,090 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 17:52:50,090 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 17:52:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 17:52:50,090 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 17:52:50,090 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 17:52:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 17:52:50,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 17:52:50,091 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-09 17:52:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-09 17:52:50,091 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-09 17:52:50,091 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-07-09 17:52:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-07-09 17:52:50,091 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-07-09 17:52:50,091 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-07-09 17:52:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-07-09 17:52:50,091 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-07-09 17:52:50,093 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 17:52:50,282 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 17:52:50,282 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-09 17:52:50,284 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 05:52:50 BoogieIcfgContainer [2021-07-09 17:52:50,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 17:52:50,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 17:52:50,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 17:52:50,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 17:52:50,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:52:49" (1/2) ... [2021-07-09 17:52:50,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a47b893 and model type ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 05:52:50, skipping insertion in model container [2021-07-09 17:52:50,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 05:52:50" (2/2) ... [2021-07-09 17:52:50,290 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-5.wvr.bpl [2021-07-09 17:52:50,295 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 17:52:50,295 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 17:52:50,295 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 17:52:50,296 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 17:52:50,345 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-07-09 17:52:50,363 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-07-09 17:52:50,379 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 17:52:50,379 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 17:52:50,379 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 17:52:50,379 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 17:52:50,379 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 17:52:50,379 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 17:52:50,379 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 17:52:50,379 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 17:52:50,388 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 46 transitions, 132 flow [2021-07-09 17:52:50,878 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 12444 states, 12443 states have (on average 4.187253877682231) internal successors, (52102), 12443 states have internal predecessors, (52102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:50,925 INFO L276 IsEmpty]: Start isEmpty. Operand has 12444 states, 12443 states have (on average 4.187253877682231) internal successors, (52102), 12443 states have internal predecessors, (52102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:51,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:52:51,064 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:52:51,065 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:52:51,066 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:52:51,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:52:51,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1715689316, now seen corresponding path program 1 times [2021-07-09 17:52:51,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:52:51,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032046600] [2021-07-09 17:52:51,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:52:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:52:51,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:52:51,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:52:51,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032046600] [2021-07-09 17:52:51,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032046600] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:52:51,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:52:51,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 17:52:51,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078774149] [2021-07-09 17:52:51,389 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 17:52:51,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:52:51,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 17:52:51,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:52:51,438 INFO L87 Difference]: Start difference. First operand has 12444 states, 12443 states have (on average 4.187253877682231) internal successors, (52102), 12443 states have internal predecessors, (52102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:51,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:52:51,906 INFO L93 Difference]: Finished difference Result 19654 states and 81351 transitions. [2021-07-09 17:52:51,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:52:51,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:52:51,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:52:52,116 INFO L225 Difference]: With dead ends: 19654 [2021-07-09 17:52:52,116 INFO L226 Difference]: Without dead ends: 13110 [2021-07-09 17:52:52,118 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 37.1ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:52:52,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13110 states. [2021-07-09 17:52:52,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13110 to 13110. [2021-07-09 17:52:52,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13110 states, 13109 states have (on average 4.060035090395911) internal successors, (53223), 13109 states have internal predecessors, (53223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:53,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13110 states to 13110 states and 53223 transitions. [2021-07-09 17:52:53,021 INFO L78 Accepts]: Start accepts. Automaton has 13110 states and 53223 transitions. Word has length 39 [2021-07-09 17:52:53,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:52:53,022 INFO L482 AbstractCegarLoop]: Abstraction has 13110 states and 53223 transitions. [2021-07-09 17:52:53,022 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:53,022 INFO L276 IsEmpty]: Start isEmpty. Operand 13110 states and 53223 transitions. [2021-07-09 17:52:53,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:52:53,198 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:52:53,199 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:52:53,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 17:52:53,199 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:52:53,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:52:53,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1375327154, now seen corresponding path program 2 times [2021-07-09 17:52:53,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:52:53,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673073866] [2021-07-09 17:52:53,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:52:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:52:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:52:53,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:52:53,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673073866] [2021-07-09 17:52:53,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673073866] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:52:53,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:52:53,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 17:52:53,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490458002] [2021-07-09 17:52:53,270 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 17:52:53,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:52:53,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 17:52:53,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:52:53,273 INFO L87 Difference]: Start difference. First operand 13110 states and 53223 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:53,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:52:53,645 INFO L93 Difference]: Finished difference Result 13536 states and 54819 transitions. [2021-07-09 17:52:53,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:52:53,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:52:53,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:52:53,832 INFO L225 Difference]: With dead ends: 13536 [2021-07-09 17:52:53,832 INFO L226 Difference]: Without dead ends: 13536 [2021-07-09 17:52:53,833 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:52:53,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13536 states. [2021-07-09 17:52:54,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13536 to 13536. [2021-07-09 17:52:54,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13536 states, 13535 states have (on average 4.050166235685261) internal successors, (54819), 13535 states have internal predecessors, (54819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:54,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13536 states to 13536 states and 54819 transitions. [2021-07-09 17:52:54,512 INFO L78 Accepts]: Start accepts. Automaton has 13536 states and 54819 transitions. Word has length 39 [2021-07-09 17:52:54,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:52:54,512 INFO L482 AbstractCegarLoop]: Abstraction has 13536 states and 54819 transitions. [2021-07-09 17:52:54,512 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:54,512 INFO L276 IsEmpty]: Start isEmpty. Operand 13536 states and 54819 transitions. [2021-07-09 17:52:54,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:52:54,691 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:52:54,691 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:52:54,691 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 17:52:54,691 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:52:54,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:52:54,692 INFO L82 PathProgramCache]: Analyzing trace with hash 620414158, now seen corresponding path program 3 times [2021-07-09 17:52:54,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:52:54,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899566289] [2021-07-09 17:52:54,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:52:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:52:54,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:52:54,738 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:52:54,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899566289] [2021-07-09 17:52:54,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899566289] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:52:54,738 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:52:54,738 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:52:54,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519691896] [2021-07-09 17:52:54,739 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 17:52:54,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:52:54,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 17:52:54,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:52:54,740 INFO L87 Difference]: Start difference. First operand 13536 states and 54819 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:55,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:52:55,300 INFO L93 Difference]: Finished difference Result 33455 states and 133148 transitions. [2021-07-09 17:52:55,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 17:52:55,301 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:52:55,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:52:55,554 INFO L225 Difference]: With dead ends: 33455 [2021-07-09 17:52:55,554 INFO L226 Difference]: Without dead ends: 33455 [2021-07-09 17:52:55,555 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 22.8ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:52:55,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33455 states. [2021-07-09 17:52:56,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33455 to 16657. [2021-07-09 17:52:56,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16657 states, 16656 states have (on average 4.000540345821325) internal successors, (66633), 16656 states have internal predecessors, (66633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:56,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16657 states to 16657 states and 66633 transitions. [2021-07-09 17:52:56,551 INFO L78 Accepts]: Start accepts. Automaton has 16657 states and 66633 transitions. Word has length 39 [2021-07-09 17:52:56,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:52:56,551 INFO L482 AbstractCegarLoop]: Abstraction has 16657 states and 66633 transitions. [2021-07-09 17:52:56,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:56,552 INFO L276 IsEmpty]: Start isEmpty. Operand 16657 states and 66633 transitions. [2021-07-09 17:52:56,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:52:56,761 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:52:56,762 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:52:56,762 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 17:52:56,762 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:52:56,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:52:56,763 INFO L82 PathProgramCache]: Analyzing trace with hash 934314874, now seen corresponding path program 4 times [2021-07-09 17:52:56,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:52:56,763 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119699630] [2021-07-09 17:52:56,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:52:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:52:56,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:52:56,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:52:56,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119699630] [2021-07-09 17:52:56,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119699630] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:52:56,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:52:56,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:52:56,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337933733] [2021-07-09 17:52:56,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:52:56,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:52:56,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:52:56,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:52:56,875 INFO L87 Difference]: Start difference. First operand 16657 states and 66633 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:57,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:52:57,450 INFO L93 Difference]: Finished difference Result 35904 states and 141978 transitions. [2021-07-09 17:52:57,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 17:52:57,473 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:52:57,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:52:57,777 INFO L225 Difference]: With dead ends: 35904 [2021-07-09 17:52:57,777 INFO L226 Difference]: Without dead ends: 35904 [2021-07-09 17:52:57,778 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 34.3ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:52:57,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35904 states. [2021-07-09 17:52:58,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35904 to 18510. [2021-07-09 17:52:58,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18510 states, 18509 states have (on average 3.9846020854719324) internal successors, (73751), 18509 states have internal predecessors, (73751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:58,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18510 states to 18510 states and 73751 transitions. [2021-07-09 17:52:58,955 INFO L78 Accepts]: Start accepts. Automaton has 18510 states and 73751 transitions. Word has length 39 [2021-07-09 17:52:58,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:52:58,955 INFO L482 AbstractCegarLoop]: Abstraction has 18510 states and 73751 transitions. [2021-07-09 17:52:58,955 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:58,955 INFO L276 IsEmpty]: Start isEmpty. Operand 18510 states and 73751 transitions. [2021-07-09 17:52:59,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:52:59,015 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:52:59,015 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:52:59,015 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 17:52:59,016 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:52:59,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:52:59,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1185778148, now seen corresponding path program 5 times [2021-07-09 17:52:59,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:52:59,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39635011] [2021-07-09 17:52:59,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:52:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:52:59,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:52:59,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:52:59,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39635011] [2021-07-09 17:52:59,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39635011] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:52:59,097 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:52:59,097 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:52:59,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022461663] [2021-07-09 17:52:59,098 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 17:52:59,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:52:59,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 17:52:59,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:52:59,099 INFO L87 Difference]: Start difference. First operand 18510 states and 73751 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:59,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:52:59,609 INFO L93 Difference]: Finished difference Result 31750 states and 125094 transitions. [2021-07-09 17:52:59,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 17:52:59,610 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:52:59,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:52:59,803 INFO L225 Difference]: With dead ends: 31750 [2021-07-09 17:52:59,803 INFO L226 Difference]: Without dead ends: 31744 [2021-07-09 17:52:59,803 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 31.5ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:52:59,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31744 states. [2021-07-09 17:53:00,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31744 to 18770. [2021-07-09 17:53:00,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18770 states, 18769 states have (on average 3.9722414619851882) internal successors, (74555), 18769 states have internal predecessors, (74555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:00,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18770 states to 18770 states and 74555 transitions. [2021-07-09 17:53:00,619 INFO L78 Accepts]: Start accepts. Automaton has 18770 states and 74555 transitions. Word has length 39 [2021-07-09 17:53:00,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:00,620 INFO L482 AbstractCegarLoop]: Abstraction has 18770 states and 74555 transitions. [2021-07-09 17:53:00,620 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:00,620 INFO L276 IsEmpty]: Start isEmpty. Operand 18770 states and 74555 transitions. [2021-07-09 17:53:00,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:00,661 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:00,661 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:00,661 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 17:53:00,661 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:00,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:00,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1322403634, now seen corresponding path program 6 times [2021-07-09 17:53:00,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:00,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760239986] [2021-07-09 17:53:00,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:00,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:00,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:00,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760239986] [2021-07-09 17:53:00,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760239986] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:00,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:00,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:53:00,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724153320] [2021-07-09 17:53:00,701 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:53:00,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:00,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:53:00,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:53:00,702 INFO L87 Difference]: Start difference. First operand 18770 states and 74555 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:01,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:01,255 INFO L93 Difference]: Finished difference Result 36650 states and 143630 transitions. [2021-07-09 17:53:01,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 17:53:01,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:01,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:01,407 INFO L225 Difference]: With dead ends: 36650 [2021-07-09 17:53:01,408 INFO L226 Difference]: Without dead ends: 36632 [2021-07-09 17:53:01,408 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 203.1ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:53:01,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36632 states. [2021-07-09 17:53:02,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36632 to 19412. [2021-07-09 17:53:02,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19412 states, 19411 states have (on average 3.9391066920818094) internal successors, (76462), 19411 states have internal predecessors, (76462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:02,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19412 states to 19412 states and 76462 transitions. [2021-07-09 17:53:02,491 INFO L78 Accepts]: Start accepts. Automaton has 19412 states and 76462 transitions. Word has length 39 [2021-07-09 17:53:02,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:02,491 INFO L482 AbstractCegarLoop]: Abstraction has 19412 states and 76462 transitions. [2021-07-09 17:53:02,491 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:02,491 INFO L276 IsEmpty]: Start isEmpty. Operand 19412 states and 76462 transitions. [2021-07-09 17:53:02,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:02,541 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:02,541 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:02,541 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 17:53:02,542 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:02,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:02,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1380554318, now seen corresponding path program 7 times [2021-07-09 17:53:02,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:02,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791380132] [2021-07-09 17:53:02,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:02,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:02,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:02,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791380132] [2021-07-09 17:53:02,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791380132] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:02,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:02,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:53:02,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041116540] [2021-07-09 17:53:02,577 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 17:53:02,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:02,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 17:53:02,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:53:02,578 INFO L87 Difference]: Start difference. First operand 19412 states and 76462 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:03,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:03,107 INFO L93 Difference]: Finished difference Result 35951 states and 140019 transitions. [2021-07-09 17:53:03,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 17:53:03,108 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:03,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:03,250 INFO L225 Difference]: With dead ends: 35951 [2021-07-09 17:53:03,250 INFO L226 Difference]: Without dead ends: 35939 [2021-07-09 17:53:03,251 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.3ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:53:03,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35939 states. [2021-07-09 17:53:03,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35939 to 21351. [2021-07-09 17:53:03,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21351 states, 21350 states have (on average 3.9075878220140514) internal successors, (83427), 21350 states have internal predecessors, (83427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:04,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21351 states to 21351 states and 83427 transitions. [2021-07-09 17:53:04,048 INFO L78 Accepts]: Start accepts. Automaton has 21351 states and 83427 transitions. Word has length 39 [2021-07-09 17:53:04,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:04,048 INFO L482 AbstractCegarLoop]: Abstraction has 21351 states and 83427 transitions. [2021-07-09 17:53:04,048 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:04,048 INFO L276 IsEmpty]: Start isEmpty. Operand 21351 states and 83427 transitions. [2021-07-09 17:53:04,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:04,089 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:04,089 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:04,089 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-09 17:53:04,089 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:04,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:04,090 INFO L82 PathProgramCache]: Analyzing trace with hash 908148320, now seen corresponding path program 8 times [2021-07-09 17:53:04,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:04,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532583216] [2021-07-09 17:53:04,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:04,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:04,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:04,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532583216] [2021-07-09 17:53:04,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532583216] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:04,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:04,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:53:04,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657955544] [2021-07-09 17:53:04,342 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 17:53:04,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:04,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 17:53:04,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:53:04,345 INFO L87 Difference]: Start difference. First operand 21351 states and 83427 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:04,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:04,766 INFO L93 Difference]: Finished difference Result 35903 states and 138617 transitions. [2021-07-09 17:53:04,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 17:53:04,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:04,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:04,907 INFO L225 Difference]: With dead ends: 35903 [2021-07-09 17:53:04,908 INFO L226 Difference]: Without dead ends: 35873 [2021-07-09 17:53:04,908 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 53.6ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:53:04,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35873 states. [2021-07-09 17:53:05,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35873 to 21689. [2021-07-09 17:53:05,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21689 states, 21688 states have (on average 3.866008852821837) internal successors, (83846), 21688 states have internal predecessors, (83846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:05,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21689 states to 21689 states and 83846 transitions. [2021-07-09 17:53:05,913 INFO L78 Accepts]: Start accepts. Automaton has 21689 states and 83846 transitions. Word has length 39 [2021-07-09 17:53:05,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:05,913 INFO L482 AbstractCegarLoop]: Abstraction has 21689 states and 83846 transitions. [2021-07-09 17:53:05,913 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:05,913 INFO L276 IsEmpty]: Start isEmpty. Operand 21689 states and 83846 transitions. [2021-07-09 17:53:05,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:05,955 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:05,955 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:05,955 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-09 17:53:05,955 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:05,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:05,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1944237650, now seen corresponding path program 9 times [2021-07-09 17:53:05,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:05,956 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979736311] [2021-07-09 17:53:05,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:05,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:05,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:05,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979736311] [2021-07-09 17:53:05,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979736311] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:05,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:05,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 17:53:05,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541760988] [2021-07-09 17:53:05,995 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 17:53:05,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:05,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 17:53:05,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:53:05,995 INFO L87 Difference]: Start difference. First operand 21689 states and 83846 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:06,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:06,179 INFO L93 Difference]: Finished difference Result 21647 states and 83363 transitions. [2021-07-09 17:53:06,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:53:06,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:06,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:06,243 INFO L225 Difference]: With dead ends: 21647 [2021-07-09 17:53:06,243 INFO L226 Difference]: Without dead ends: 21605 [2021-07-09 17:53:06,243 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:53:06,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21605 states. [2021-07-09 17:53:06,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21605 to 21403. [2021-07-09 17:53:06,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21403 states, 21402 states have (on average 3.863470703672554) internal successors, (82686), 21402 states have internal predecessors, (82686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:06,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21403 states to 21403 states and 82686 transitions. [2021-07-09 17:53:06,872 INFO L78 Accepts]: Start accepts. Automaton has 21403 states and 82686 transitions. Word has length 39 [2021-07-09 17:53:06,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:06,872 INFO L482 AbstractCegarLoop]: Abstraction has 21403 states and 82686 transitions. [2021-07-09 17:53:06,872 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:06,874 INFO L276 IsEmpty]: Start isEmpty. Operand 21403 states and 82686 transitions. [2021-07-09 17:53:06,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:06,914 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:06,914 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:06,915 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-09 17:53:06,915 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:06,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:06,915 INFO L82 PathProgramCache]: Analyzing trace with hash -189870850, now seen corresponding path program 10 times [2021-07-09 17:53:06,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:06,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271060022] [2021-07-09 17:53:06,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:06,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:06,948 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:06,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271060022] [2021-07-09 17:53:06,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271060022] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:06,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:06,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 17:53:06,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241516459] [2021-07-09 17:53:06,949 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 17:53:06,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:06,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 17:53:06,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:53:06,949 INFO L87 Difference]: Start difference. First operand 21403 states and 82686 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:07,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:07,297 INFO L93 Difference]: Finished difference Result 21227 states and 81806 transitions. [2021-07-09 17:53:07,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:53:07,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:07,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:07,357 INFO L225 Difference]: With dead ends: 21227 [2021-07-09 17:53:07,357 INFO L226 Difference]: Without dead ends: 21203 [2021-07-09 17:53:07,358 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.9ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:53:07,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21203 states. [2021-07-09 17:53:07,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21203 to 21050. [2021-07-09 17:53:07,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21050 states, 21049 states have (on average 3.8641740700270795) internal successors, (81337), 21049 states have internal predecessors, (81337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:07,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21050 states to 21050 states and 81337 transitions. [2021-07-09 17:53:07,984 INFO L78 Accepts]: Start accepts. Automaton has 21050 states and 81337 transitions. Word has length 39 [2021-07-09 17:53:07,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:07,984 INFO L482 AbstractCegarLoop]: Abstraction has 21050 states and 81337 transitions. [2021-07-09 17:53:07,984 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:07,984 INFO L276 IsEmpty]: Start isEmpty. Operand 21050 states and 81337 transitions. [2021-07-09 17:53:08,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:08,027 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:08,027 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:08,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-09 17:53:08,027 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:08,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:08,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1798812760, now seen corresponding path program 11 times [2021-07-09 17:53:08,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:08,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880154932] [2021-07-09 17:53:08,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:08,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:08,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:08,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880154932] [2021-07-09 17:53:08,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880154932] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:08,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:08,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:53:08,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94851430] [2021-07-09 17:53:08,091 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 17:53:08,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:08,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 17:53:08,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:53:08,092 INFO L87 Difference]: Start difference. First operand 21050 states and 81337 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:08,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:08,731 INFO L93 Difference]: Finished difference Result 41364 states and 158003 transitions. [2021-07-09 17:53:08,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:53:08,731 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:08,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:08,875 INFO L225 Difference]: With dead ends: 41364 [2021-07-09 17:53:08,875 INFO L226 Difference]: Without dead ends: 41364 [2021-07-09 17:53:08,876 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 69.3ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:53:08,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41364 states. [2021-07-09 17:53:09,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41364 to 24666. [2021-07-09 17:53:09,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24666 states, 24665 states have (on average 3.801054125278735) internal successors, (93753), 24665 states have internal predecessors, (93753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:09,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24666 states to 24666 states and 93753 transitions. [2021-07-09 17:53:09,725 INFO L78 Accepts]: Start accepts. Automaton has 24666 states and 93753 transitions. Word has length 39 [2021-07-09 17:53:09,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:09,726 INFO L482 AbstractCegarLoop]: Abstraction has 24666 states and 93753 transitions. [2021-07-09 17:53:09,726 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:09,726 INFO L276 IsEmpty]: Start isEmpty. Operand 24666 states and 93753 transitions. [2021-07-09 17:53:09,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:09,782 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:09,782 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:09,782 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-09 17:53:09,782 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:09,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:09,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1238471434, now seen corresponding path program 12 times [2021-07-09 17:53:09,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:09,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646164253] [2021-07-09 17:53:09,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:09,816 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:09,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646164253] [2021-07-09 17:53:09,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646164253] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:09,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:09,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 17:53:09,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80779993] [2021-07-09 17:53:09,817 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 17:53:09,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:09,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 17:53:09,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:53:09,817 INFO L87 Difference]: Start difference. First operand 24666 states and 93753 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:10,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:10,191 INFO L93 Difference]: Finished difference Result 24060 states and 91079 transitions. [2021-07-09 17:53:10,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:53:10,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:10,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:10,259 INFO L225 Difference]: With dead ends: 24060 [2021-07-09 17:53:10,259 INFO L226 Difference]: Without dead ends: 23997 [2021-07-09 17:53:10,259 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:53:10,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23997 states. [2021-07-09 17:53:10,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23997 to 23727. [2021-07-09 17:53:10,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23727 states, 23726 states have (on average 3.8022844137233416) internal successors, (90213), 23726 states have internal predecessors, (90213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:10,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23727 states to 23727 states and 90213 transitions. [2021-07-09 17:53:10,900 INFO L78 Accepts]: Start accepts. Automaton has 23727 states and 90213 transitions. Word has length 39 [2021-07-09 17:53:10,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:10,900 INFO L482 AbstractCegarLoop]: Abstraction has 23727 states and 90213 transitions. [2021-07-09 17:53:10,901 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:10,901 INFO L276 IsEmpty]: Start isEmpty. Operand 23727 states and 90213 transitions. [2021-07-09 17:53:10,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:10,951 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:10,951 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:10,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-09 17:53:10,952 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:10,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:10,952 INFO L82 PathProgramCache]: Analyzing trace with hash -2101915092, now seen corresponding path program 13 times [2021-07-09 17:53:10,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:10,952 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638638826] [2021-07-09 17:53:10,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:10,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:10,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:10,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638638826] [2021-07-09 17:53:10,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638638826] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:10,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:10,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:53:10,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145075723] [2021-07-09 17:53:10,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 17:53:10,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:10,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 17:53:10,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:53:10,999 INFO L87 Difference]: Start difference. First operand 23727 states and 90213 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:11,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:11,502 INFO L93 Difference]: Finished difference Result 39912 states and 151078 transitions. [2021-07-09 17:53:11,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 17:53:11,503 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:11,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:11,641 INFO L225 Difference]: With dead ends: 39912 [2021-07-09 17:53:11,641 INFO L226 Difference]: Without dead ends: 39864 [2021-07-09 17:53:11,641 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 22.8ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:53:11,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39864 states. [2021-07-09 17:53:12,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39864 to 24281. [2021-07-09 17:53:12,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24281 states, 24280 states have (on average 3.7902388797364086) internal successors, (92027), 24280 states have internal predecessors, (92027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:12,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24281 states to 24281 states and 92027 transitions. [2021-07-09 17:53:12,446 INFO L78 Accepts]: Start accepts. Automaton has 24281 states and 92027 transitions. Word has length 39 [2021-07-09 17:53:12,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:12,446 INFO L482 AbstractCegarLoop]: Abstraction has 24281 states and 92027 transitions. [2021-07-09 17:53:12,446 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:12,446 INFO L276 IsEmpty]: Start isEmpty. Operand 24281 states and 92027 transitions. [2021-07-09 17:53:12,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:12,491 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:12,491 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:12,491 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-09 17:53:12,491 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:12,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:12,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1053322228, now seen corresponding path program 14 times [2021-07-09 17:53:12,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:12,492 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607056266] [2021-07-09 17:53:12,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:12,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:12,542 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:12,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607056266] [2021-07-09 17:53:12,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607056266] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:12,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:12,543 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:53:12,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349818363] [2021-07-09 17:53:12,543 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 17:53:12,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:12,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 17:53:12,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:53:12,544 INFO L87 Difference]: Start difference. First operand 24281 states and 92027 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:12,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:12,977 INFO L93 Difference]: Finished difference Result 32456 states and 120014 transitions. [2021-07-09 17:53:12,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 17:53:12,977 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:12,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:13,068 INFO L225 Difference]: With dead ends: 32456 [2021-07-09 17:53:13,068 INFO L226 Difference]: Without dead ends: 32320 [2021-07-09 17:53:13,068 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.1ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:53:13,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32320 states. [2021-07-09 17:53:13,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32320 to 20818. [2021-07-09 17:53:13,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20818 states, 20817 states have (on average 3.6923668155834175) internal successors, (76864), 20817 states have internal predecessors, (76864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:13,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20818 states to 20818 states and 76864 transitions. [2021-07-09 17:53:13,746 INFO L78 Accepts]: Start accepts. Automaton has 20818 states and 76864 transitions. Word has length 39 [2021-07-09 17:53:13,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:13,747 INFO L482 AbstractCegarLoop]: Abstraction has 20818 states and 76864 transitions. [2021-07-09 17:53:13,747 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:13,747 INFO L276 IsEmpty]: Start isEmpty. Operand 20818 states and 76864 transitions. [2021-07-09 17:53:13,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:13,788 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:13,788 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:13,788 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-09 17:53:13,788 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:13,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:13,789 INFO L82 PathProgramCache]: Analyzing trace with hash -540719572, now seen corresponding path program 15 times [2021-07-09 17:53:13,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:13,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908473366] [2021-07-09 17:53:13,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:13,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:13,840 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:13,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908473366] [2021-07-09 17:53:13,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908473366] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:13,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:13,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:53:13,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928596589] [2021-07-09 17:53:13,840 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:53:13,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:13,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:53:13,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:53:13,841 INFO L87 Difference]: Start difference. First operand 20818 states and 76864 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:14,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:14,337 INFO L93 Difference]: Finished difference Result 36117 states and 131263 transitions. [2021-07-09 17:53:14,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 17:53:14,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:14,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:14,466 INFO L225 Difference]: With dead ends: 36117 [2021-07-09 17:53:14,466 INFO L226 Difference]: Without dead ends: 35877 [2021-07-09 17:53:14,466 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 23.5ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:53:14,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35877 states. [2021-07-09 17:53:15,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35877 to 21634. [2021-07-09 17:53:15,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21634 states, 21633 states have (on average 3.6624139046826607) internal successors, (79229), 21633 states have internal predecessors, (79229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:15,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21634 states to 21634 states and 79229 transitions. [2021-07-09 17:53:15,208 INFO L78 Accepts]: Start accepts. Automaton has 21634 states and 79229 transitions. Word has length 39 [2021-07-09 17:53:15,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:15,208 INFO L482 AbstractCegarLoop]: Abstraction has 21634 states and 79229 transitions. [2021-07-09 17:53:15,208 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:15,208 INFO L276 IsEmpty]: Start isEmpty. Operand 21634 states and 79229 transitions. [2021-07-09 17:53:15,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:15,245 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:15,245 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:15,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-09 17:53:15,245 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:15,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:15,246 INFO L82 PathProgramCache]: Analyzing trace with hash -2082921458, now seen corresponding path program 16 times [2021-07-09 17:53:15,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:15,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189171834] [2021-07-09 17:53:15,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:15,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:15,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:15,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189171834] [2021-07-09 17:53:15,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189171834] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:15,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:15,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:53:15,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766717048] [2021-07-09 17:53:15,297 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 17:53:15,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:15,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 17:53:15,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:53:15,298 INFO L87 Difference]: Start difference. First operand 21634 states and 79229 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:15,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:15,634 INFO L93 Difference]: Finished difference Result 38178 states and 137087 transitions. [2021-07-09 17:53:15,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:53:15,634 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:15,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:15,974 INFO L225 Difference]: With dead ends: 38178 [2021-07-09 17:53:15,974 INFO L226 Difference]: Without dead ends: 37920 [2021-07-09 17:53:15,975 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 40.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:53:16,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37920 states. [2021-07-09 17:53:16,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37920 to 22991. [2021-07-09 17:53:16,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22991 states, 22990 states have (on average 3.6151805132666377) internal successors, (83113), 22990 states have internal predecessors, (83113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:16,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22991 states to 22991 states and 83113 transitions. [2021-07-09 17:53:16,707 INFO L78 Accepts]: Start accepts. Automaton has 22991 states and 83113 transitions. Word has length 39 [2021-07-09 17:53:16,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:16,708 INFO L482 AbstractCegarLoop]: Abstraction has 22991 states and 83113 transitions. [2021-07-09 17:53:16,708 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:16,708 INFO L276 IsEmpty]: Start isEmpty. Operand 22991 states and 83113 transitions. [2021-07-09 17:53:16,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:16,751 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:16,751 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:16,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-09 17:53:16,751 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:16,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:16,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1329908748, now seen corresponding path program 17 times [2021-07-09 17:53:16,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:16,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212269833] [2021-07-09 17:53:16,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:16,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:16,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212269833] [2021-07-09 17:53:16,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212269833] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:16,795 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:16,795 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:53:16,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957284328] [2021-07-09 17:53:16,795 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:53:16,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:16,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:53:16,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:53:16,796 INFO L87 Difference]: Start difference. First operand 22991 states and 83113 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:17,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:17,083 INFO L93 Difference]: Finished difference Result 37550 states and 133913 transitions. [2021-07-09 17:53:17,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 17:53:17,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:17,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:17,187 INFO L225 Difference]: With dead ends: 37550 [2021-07-09 17:53:17,188 INFO L226 Difference]: Without dead ends: 37350 [2021-07-09 17:53:17,188 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 26.7ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:53:17,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37350 states. [2021-07-09 17:53:17,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37350 to 22436. [2021-07-09 17:53:17,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22436 states, 22435 states have (on average 3.5778916870960553) internal successors, (80270), 22435 states have internal predecessors, (80270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:18,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22436 states to 22436 states and 80270 transitions. [2021-07-09 17:53:18,144 INFO L78 Accepts]: Start accepts. Automaton has 22436 states and 80270 transitions. Word has length 39 [2021-07-09 17:53:18,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:18,144 INFO L482 AbstractCegarLoop]: Abstraction has 22436 states and 80270 transitions. [2021-07-09 17:53:18,144 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:18,144 INFO L276 IsEmpty]: Start isEmpty. Operand 22436 states and 80270 transitions. [2021-07-09 17:53:18,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:18,182 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:18,182 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:18,182 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-07-09 17:53:18,182 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:18,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:18,182 INFO L82 PathProgramCache]: Analyzing trace with hash 592473582, now seen corresponding path program 18 times [2021-07-09 17:53:18,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:18,183 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635786983] [2021-07-09 17:53:18,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:18,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:18,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:18,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:18,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635786983] [2021-07-09 17:53:18,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635786983] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:18,237 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:18,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:53:18,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112491160] [2021-07-09 17:53:18,238 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 17:53:18,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:18,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 17:53:18,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:53:18,239 INFO L87 Difference]: Start difference. First operand 22436 states and 80270 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:18,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:18,635 INFO L93 Difference]: Finished difference Result 35683 states and 123807 transitions. [2021-07-09 17:53:18,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:53:18,635 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:18,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:18,760 INFO L225 Difference]: With dead ends: 35683 [2021-07-09 17:53:18,760 INFO L226 Difference]: Without dead ends: 35127 [2021-07-09 17:53:18,761 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 47.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:53:18,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35127 states. [2021-07-09 17:53:19,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35127 to 21141. [2021-07-09 17:53:19,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21141 states, 21140 states have (on average 3.479091769157994) internal successors, (73548), 21140 states have internal predecessors, (73548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:19,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21141 states to 21141 states and 73548 transitions. [2021-07-09 17:53:19,595 INFO L78 Accepts]: Start accepts. Automaton has 21141 states and 73548 transitions. Word has length 39 [2021-07-09 17:53:19,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:19,595 INFO L482 AbstractCegarLoop]: Abstraction has 21141 states and 73548 transitions. [2021-07-09 17:53:19,595 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:19,595 INFO L276 IsEmpty]: Start isEmpty. Operand 21141 states and 73548 transitions. [2021-07-09 17:53:19,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:19,630 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:19,630 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:19,631 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-07-09 17:53:19,631 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:19,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:19,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1672676318, now seen corresponding path program 19 times [2021-07-09 17:53:19,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:19,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13164585] [2021-07-09 17:53:19,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:19,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:19,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:19,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13164585] [2021-07-09 17:53:19,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13164585] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:19,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:19,690 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:53:19,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374823468] [2021-07-09 17:53:19,690 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 17:53:19,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:19,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 17:53:19,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:53:19,691 INFO L87 Difference]: Start difference. First operand 21141 states and 73548 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:20,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:20,118 INFO L93 Difference]: Finished difference Result 34526 states and 119373 transitions. [2021-07-09 17:53:20,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 17:53:20,118 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:20,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:20,211 INFO L225 Difference]: With dead ends: 34526 [2021-07-09 17:53:20,211 INFO L226 Difference]: Without dead ends: 34342 [2021-07-09 17:53:20,211 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.5ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:53:20,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34342 states. [2021-07-09 17:53:20,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34342 to 20667. [2021-07-09 17:53:20,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20667 states, 20666 states have (on average 3.459498693506242) internal successors, (71494), 20666 states have internal predecessors, (71494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:20,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20667 states to 20667 states and 71494 transitions. [2021-07-09 17:53:20,844 INFO L78 Accepts]: Start accepts. Automaton has 20667 states and 71494 transitions. Word has length 39 [2021-07-09 17:53:20,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:20,845 INFO L482 AbstractCegarLoop]: Abstraction has 20667 states and 71494 transitions. [2021-07-09 17:53:20,845 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:20,845 INFO L276 IsEmpty]: Start isEmpty. Operand 20667 states and 71494 transitions. [2021-07-09 17:53:20,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:20,879 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:20,879 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:20,879 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-07-09 17:53:20,879 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:20,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:20,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1105254300, now seen corresponding path program 20 times [2021-07-09 17:53:20,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:20,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480929032] [2021-07-09 17:53:20,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:20,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:20,929 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:20,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480929032] [2021-07-09 17:53:20,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480929032] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:20,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:20,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:53:20,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710512922] [2021-07-09 17:53:20,930 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 17:53:20,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:20,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 17:53:20,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:53:20,930 INFO L87 Difference]: Start difference. First operand 20667 states and 71494 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:21,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:21,244 INFO L93 Difference]: Finished difference Result 30341 states and 101554 transitions. [2021-07-09 17:53:21,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:53:21,244 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:21,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:21,531 INFO L225 Difference]: With dead ends: 30341 [2021-07-09 17:53:21,531 INFO L226 Difference]: Without dead ends: 28975 [2021-07-09 17:53:21,532 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 46.9ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:53:21,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28975 states. [2021-07-09 17:53:21,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28975 to 18475. [2021-07-09 17:53:21,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18475 states, 18474 states have (on average 3.362725993287864) internal successors, (62123), 18474 states have internal predecessors, (62123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:21,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18475 states to 18475 states and 62123 transitions. [2021-07-09 17:53:21,944 INFO L78 Accepts]: Start accepts. Automaton has 18475 states and 62123 transitions. Word has length 39 [2021-07-09 17:53:21,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:21,944 INFO L482 AbstractCegarLoop]: Abstraction has 18475 states and 62123 transitions. [2021-07-09 17:53:21,944 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:21,944 INFO L276 IsEmpty]: Start isEmpty. Operand 18475 states and 62123 transitions. [2021-07-09 17:53:22,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:22,118 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:22,118 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:22,118 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-07-09 17:53:22,118 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:22,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:22,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1928798790, now seen corresponding path program 21 times [2021-07-09 17:53:22,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:22,119 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121274895] [2021-07-09 17:53:22,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:22,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:22,168 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:22,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121274895] [2021-07-09 17:53:22,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121274895] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:22,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:22,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:53:22,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375942032] [2021-07-09 17:53:22,169 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 17:53:22,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:22,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 17:53:22,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:53:22,169 INFO L87 Difference]: Start difference. First operand 18475 states and 62123 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:22,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:22,479 INFO L93 Difference]: Finished difference Result 28267 states and 94087 transitions. [2021-07-09 17:53:22,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:53:22,479 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:22,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:22,552 INFO L225 Difference]: With dead ends: 28267 [2021-07-09 17:53:22,553 INFO L226 Difference]: Without dead ends: 28159 [2021-07-09 17:53:22,553 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 35.0ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:53:22,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28159 states. [2021-07-09 17:53:23,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28159 to 18449. [2021-07-09 17:53:23,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18449 states, 18448 states have (on average 3.357328707718994) internal successors, (61936), 18448 states have internal predecessors, (61936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:23,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18449 states to 18449 states and 61936 transitions. [2021-07-09 17:53:23,093 INFO L78 Accepts]: Start accepts. Automaton has 18449 states and 61936 transitions. Word has length 39 [2021-07-09 17:53:23,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:23,094 INFO L482 AbstractCegarLoop]: Abstraction has 18449 states and 61936 transitions. [2021-07-09 17:53:23,094 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:23,094 INFO L276 IsEmpty]: Start isEmpty. Operand 18449 states and 61936 transitions. [2021-07-09 17:53:23,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:23,124 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:23,124 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:23,125 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-07-09 17:53:23,125 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:23,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:23,125 INFO L82 PathProgramCache]: Analyzing trace with hash -327899718, now seen corresponding path program 22 times [2021-07-09 17:53:23,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:23,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993561675] [2021-07-09 17:53:23,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:23,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:23,190 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:23,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993561675] [2021-07-09 17:53:23,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993561675] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:23,190 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:23,190 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 17:53:23,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813340693] [2021-07-09 17:53:23,190 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:53:23,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:23,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:53:23,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:53:23,191 INFO L87 Difference]: Start difference. First operand 18449 states and 61936 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:23,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:23,536 INFO L93 Difference]: Finished difference Result 28032 states and 93171 transitions. [2021-07-09 17:53:23,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 17:53:23,537 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:23,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:23,606 INFO L225 Difference]: With dead ends: 28032 [2021-07-09 17:53:23,606 INFO L226 Difference]: Without dead ends: 27672 [2021-07-09 17:53:23,607 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 52.0ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-07-09 17:53:23,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27672 states. [2021-07-09 17:53:24,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27672 to 18187. [2021-07-09 17:53:24,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18187 states, 18186 states have (on average 3.346530298031453) internal successors, (60860), 18186 states have internal predecessors, (60860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:24,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18187 states to 18187 states and 60860 transitions. [2021-07-09 17:53:24,154 INFO L78 Accepts]: Start accepts. Automaton has 18187 states and 60860 transitions. Word has length 39 [2021-07-09 17:53:24,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:24,154 INFO L482 AbstractCegarLoop]: Abstraction has 18187 states and 60860 transitions. [2021-07-09 17:53:24,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:24,154 INFO L276 IsEmpty]: Start isEmpty. Operand 18187 states and 60860 transitions. [2021-07-09 17:53:24,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:24,185 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:24,186 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:24,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-07-09 17:53:24,186 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:24,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:24,186 INFO L82 PathProgramCache]: Analyzing trace with hash -2006842152, now seen corresponding path program 23 times [2021-07-09 17:53:24,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:24,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616997862] [2021-07-09 17:53:24,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:24,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:24,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:24,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616997862] [2021-07-09 17:53:24,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616997862] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:24,251 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:24,251 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:53:24,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987725441] [2021-07-09 17:53:24,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 17:53:24,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:24,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 17:53:24,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:53:24,254 INFO L87 Difference]: Start difference. First operand 18187 states and 60860 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:24,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:24,832 INFO L93 Difference]: Finished difference Result 27773 states and 91779 transitions. [2021-07-09 17:53:24,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 17:53:24,833 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:24,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:24,904 INFO L225 Difference]: With dead ends: 27773 [2021-07-09 17:53:24,904 INFO L226 Difference]: Without dead ends: 27521 [2021-07-09 17:53:24,904 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 78.7ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-07-09 17:53:24,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27521 states. [2021-07-09 17:53:25,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27521 to 18576. [2021-07-09 17:53:25,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18576 states, 18575 states have (on average 3.3176312247644684) internal successors, (61625), 18575 states have internal predecessors, (61625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:25,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18576 states to 18576 states and 61625 transitions. [2021-07-09 17:53:25,453 INFO L78 Accepts]: Start accepts. Automaton has 18576 states and 61625 transitions. Word has length 39 [2021-07-09 17:53:25,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:25,453 INFO L482 AbstractCegarLoop]: Abstraction has 18576 states and 61625 transitions. [2021-07-09 17:53:25,454 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:25,454 INFO L276 IsEmpty]: Start isEmpty. Operand 18576 states and 61625 transitions. [2021-07-09 17:53:25,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:25,483 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:25,484 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:25,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-07-09 17:53:25,484 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:25,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:25,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1115941786, now seen corresponding path program 24 times [2021-07-09 17:53:25,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:25,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537702335] [2021-07-09 17:53:25,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:25,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:25,535 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:25,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537702335] [2021-07-09 17:53:25,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537702335] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:25,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:25,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:53:25,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121417193] [2021-07-09 17:53:25,536 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 17:53:25,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:25,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 17:53:25,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:53:25,536 INFO L87 Difference]: Start difference. First operand 18576 states and 61625 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:25,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:25,838 INFO L93 Difference]: Finished difference Result 28814 states and 94330 transitions. [2021-07-09 17:53:25,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:53:25,838 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:25,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:25,908 INFO L225 Difference]: With dead ends: 28814 [2021-07-09 17:53:25,908 INFO L226 Difference]: Without dead ends: 28630 [2021-07-09 17:53:25,908 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 34.8ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:53:25,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28630 states. [2021-07-09 17:53:26,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28630 to 18552. [2021-07-09 17:53:26,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18552 states, 18551 states have (on average 3.308986038488491) internal successors, (61385), 18551 states have internal predecessors, (61385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:26,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18552 states to 18552 states and 61385 transitions. [2021-07-09 17:53:26,509 INFO L78 Accepts]: Start accepts. Automaton has 18552 states and 61385 transitions. Word has length 39 [2021-07-09 17:53:26,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:26,509 INFO L482 AbstractCegarLoop]: Abstraction has 18552 states and 61385 transitions. [2021-07-09 17:53:26,509 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:26,509 INFO L276 IsEmpty]: Start isEmpty. Operand 18552 states and 61385 transitions. [2021-07-09 17:53:26,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:26,539 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:26,539 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:26,540 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-07-09 17:53:26,540 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:26,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:26,540 INFO L82 PathProgramCache]: Analyzing trace with hash -773359718, now seen corresponding path program 25 times [2021-07-09 17:53:26,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:26,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011733622] [2021-07-09 17:53:26,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:26,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:26,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:26,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011733622] [2021-07-09 17:53:26,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011733622] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:26,592 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:26,593 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 17:53:26,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371372387] [2021-07-09 17:53:26,593 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:53:26,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:26,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:53:26,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:53:26,593 INFO L87 Difference]: Start difference. First operand 18552 states and 61385 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:27,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:27,160 INFO L93 Difference]: Finished difference Result 28644 states and 93689 transitions. [2021-07-09 17:53:27,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 17:53:27,161 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:27,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:27,235 INFO L225 Difference]: With dead ends: 28644 [2021-07-09 17:53:27,235 INFO L226 Difference]: Without dead ends: 27824 [2021-07-09 17:53:27,236 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 47.9ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-07-09 17:53:27,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27824 states. [2021-07-09 17:53:27,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27824 to 17898. [2021-07-09 17:53:27,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17898 states, 17897 states have (on average 3.2920601218081242) internal successors, (58918), 17897 states have internal predecessors, (58918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:27,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17898 states to 17898 states and 58918 transitions. [2021-07-09 17:53:27,828 INFO L78 Accepts]: Start accepts. Automaton has 17898 states and 58918 transitions. Word has length 39 [2021-07-09 17:53:27,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:27,828 INFO L482 AbstractCegarLoop]: Abstraction has 17898 states and 58918 transitions. [2021-07-09 17:53:27,828 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:27,828 INFO L276 IsEmpty]: Start isEmpty. Operand 17898 states and 58918 transitions. [2021-07-09 17:53:27,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:27,858 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:27,858 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:27,858 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-07-09 17:53:27,858 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:27,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:27,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1520345416, now seen corresponding path program 26 times [2021-07-09 17:53:27,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:27,859 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143427098] [2021-07-09 17:53:27,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:27,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:27,914 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:27,914 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143427098] [2021-07-09 17:53:27,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143427098] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:27,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:27,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:53:27,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919018575] [2021-07-09 17:53:27,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 17:53:27,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:27,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 17:53:27,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:53:27,918 INFO L87 Difference]: Start difference. First operand 17898 states and 58918 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:28,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:28,346 INFO L93 Difference]: Finished difference Result 28142 states and 91490 transitions. [2021-07-09 17:53:28,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 17:53:28,346 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:28,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:28,415 INFO L225 Difference]: With dead ends: 28142 [2021-07-09 17:53:28,415 INFO L226 Difference]: Without dead ends: 26796 [2021-07-09 17:53:28,416 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 74.3ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-07-09 17:53:28,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26796 states. [2021-07-09 17:53:28,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26796 to 17614. [2021-07-09 17:53:28,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17614 states, 17613 states have (on average 3.2751376823936864) internal successors, (57685), 17613 states have internal predecessors, (57685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:28,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17614 states to 17614 states and 57685 transitions. [2021-07-09 17:53:28,940 INFO L78 Accepts]: Start accepts. Automaton has 17614 states and 57685 transitions. Word has length 39 [2021-07-09 17:53:28,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:28,941 INFO L482 AbstractCegarLoop]: Abstraction has 17614 states and 57685 transitions. [2021-07-09 17:53:28,941 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:28,941 INFO L276 IsEmpty]: Start isEmpty. Operand 17614 states and 57685 transitions. [2021-07-09 17:53:28,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:28,971 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:28,971 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:28,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-07-09 17:53:28,972 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:28,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:28,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1628826748, now seen corresponding path program 27 times [2021-07-09 17:53:28,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:28,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477974486] [2021-07-09 17:53:28,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:29,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:29,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:29,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477974486] [2021-07-09 17:53:29,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477974486] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:29,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:29,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:53:29,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745151976] [2021-07-09 17:53:29,036 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 17:53:29,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:29,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 17:53:29,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:53:29,037 INFO L87 Difference]: Start difference. First operand 17614 states and 57685 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:29,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:29,626 INFO L93 Difference]: Finished difference Result 27764 states and 89075 transitions. [2021-07-09 17:53:29,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 17:53:29,627 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:29,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:29,705 INFO L225 Difference]: With dead ends: 27764 [2021-07-09 17:53:29,705 INFO L226 Difference]: Without dead ends: 26272 [2021-07-09 17:53:29,705 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 73.2ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-07-09 17:53:29,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26272 states. [2021-07-09 17:53:30,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26272 to 16042. [2021-07-09 17:53:30,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16042 states, 16041 states have (on average 3.2308459572345862) internal successors, (51826), 16041 states have internal predecessors, (51826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:30,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16042 states to 16042 states and 51826 transitions. [2021-07-09 17:53:30,062 INFO L78 Accepts]: Start accepts. Automaton has 16042 states and 51826 transitions. Word has length 39 [2021-07-09 17:53:30,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:30,062 INFO L482 AbstractCegarLoop]: Abstraction has 16042 states and 51826 transitions. [2021-07-09 17:53:30,062 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:30,062 INFO L276 IsEmpty]: Start isEmpty. Operand 16042 states and 51826 transitions. [2021-07-09 17:53:30,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:30,087 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:30,087 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:30,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-07-09 17:53:30,088 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:30,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:30,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1990404212, now seen corresponding path program 28 times [2021-07-09 17:53:30,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:30,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191087545] [2021-07-09 17:53:30,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:30,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:30,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:30,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191087545] [2021-07-09 17:53:30,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191087545] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:30,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:30,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:53:30,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892075483] [2021-07-09 17:53:30,123 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 17:53:30,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:30,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 17:53:30,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:53:30,124 INFO L87 Difference]: Start difference. First operand 16042 states and 51826 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:30,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:30,429 INFO L93 Difference]: Finished difference Result 26251 states and 83635 transitions. [2021-07-09 17:53:30,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 17:53:30,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:30,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:30,488 INFO L225 Difference]: With dead ends: 26251 [2021-07-09 17:53:30,488 INFO L226 Difference]: Without dead ends: 25907 [2021-07-09 17:53:30,488 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.1ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:53:30,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25907 states. [2021-07-09 17:53:30,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25907 to 15530. [2021-07-09 17:53:30,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15530 states, 15529 states have (on average 3.2065168394616523) internal successors, (49794), 15529 states have internal predecessors, (49794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:30,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15530 states to 15530 states and 49794 transitions. [2021-07-09 17:53:30,828 INFO L78 Accepts]: Start accepts. Automaton has 15530 states and 49794 transitions. Word has length 39 [2021-07-09 17:53:30,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:30,828 INFO L482 AbstractCegarLoop]: Abstraction has 15530 states and 49794 transitions. [2021-07-09 17:53:30,828 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:30,829 INFO L276 IsEmpty]: Start isEmpty. Operand 15530 states and 49794 transitions. [2021-07-09 17:53:30,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:30,853 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:30,853 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:30,853 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-07-09 17:53:30,853 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:30,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:30,854 INFO L82 PathProgramCache]: Analyzing trace with hash -486861366, now seen corresponding path program 29 times [2021-07-09 17:53:30,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:30,854 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271107683] [2021-07-09 17:53:30,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:30,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:30,898 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:30,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271107683] [2021-07-09 17:53:30,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271107683] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:30,899 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:30,899 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:53:30,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894743239] [2021-07-09 17:53:30,899 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 17:53:30,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:30,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 17:53:30,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:53:30,899 INFO L87 Difference]: Start difference. First operand 15530 states and 49794 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:31,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:31,234 INFO L93 Difference]: Finished difference Result 19376 states and 57898 transitions. [2021-07-09 17:53:31,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:53:31,234 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:31,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:31,286 INFO L225 Difference]: With dead ends: 19376 [2021-07-09 17:53:31,286 INFO L226 Difference]: Without dead ends: 17805 [2021-07-09 17:53:31,286 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 125.8ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:53:31,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17805 states. [2021-07-09 17:53:31,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17805 to 10863. [2021-07-09 17:53:31,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10863 states, 10862 states have (on average 3.029736696740932) internal successors, (32909), 10862 states have internal predecessors, (32909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:31,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10863 states to 10863 states and 32909 transitions. [2021-07-09 17:53:31,590 INFO L78 Accepts]: Start accepts. Automaton has 10863 states and 32909 transitions. Word has length 39 [2021-07-09 17:53:31,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:31,590 INFO L482 AbstractCegarLoop]: Abstraction has 10863 states and 32909 transitions. [2021-07-09 17:53:31,591 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:31,591 INFO L276 IsEmpty]: Start isEmpty. Operand 10863 states and 32909 transitions. [2021-07-09 17:53:31,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:31,610 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:31,610 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:31,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-07-09 17:53:31,611 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:31,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:31,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1712472694, now seen corresponding path program 30 times [2021-07-09 17:53:31,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:31,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461246991] [2021-07-09 17:53:31,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:31,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:31,660 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:31,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461246991] [2021-07-09 17:53:31,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461246991] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:31,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:31,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 17:53:31,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501705637] [2021-07-09 17:53:31,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:53:31,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:31,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:53:31,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:53:31,662 INFO L87 Difference]: Start difference. First operand 10863 states and 32909 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:31,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:31,944 INFO L93 Difference]: Finished difference Result 16060 states and 47771 transitions. [2021-07-09 17:53:31,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 17:53:31,944 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:31,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:31,974 INFO L225 Difference]: With dead ends: 16060 [2021-07-09 17:53:31,974 INFO L226 Difference]: Without dead ends: 15380 [2021-07-09 17:53:31,974 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 46.5ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-07-09 17:53:32,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15380 states. [2021-07-09 17:53:32,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15380 to 10289. [2021-07-09 17:53:32,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10289 states, 10288 states have (on average 3.010303265940902) internal successors, (30970), 10288 states have internal predecessors, (30970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:32,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10289 states to 10289 states and 30970 transitions. [2021-07-09 17:53:32,155 INFO L78 Accepts]: Start accepts. Automaton has 10289 states and 30970 transitions. Word has length 39 [2021-07-09 17:53:32,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:32,155 INFO L482 AbstractCegarLoop]: Abstraction has 10289 states and 30970 transitions. [2021-07-09 17:53:32,155 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:32,155 INFO L276 IsEmpty]: Start isEmpty. Operand 10289 states and 30970 transitions. [2021-07-09 17:53:32,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:32,170 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:32,170 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:32,170 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-07-09 17:53:32,170 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:32,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:32,171 INFO L82 PathProgramCache]: Analyzing trace with hash -12539988, now seen corresponding path program 31 times [2021-07-09 17:53:32,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:32,171 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850027736] [2021-07-09 17:53:32,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:32,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:32,234 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:32,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850027736] [2021-07-09 17:53:32,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850027736] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:32,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:32,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:53:32,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367964615] [2021-07-09 17:53:32,235 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 17:53:32,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:32,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 17:53:32,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:53:32,236 INFO L87 Difference]: Start difference. First operand 10289 states and 30970 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:32,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:32,608 INFO L93 Difference]: Finished difference Result 14404 states and 42007 transitions. [2021-07-09 17:53:32,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 17:53:32,609 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:32,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:32,646 INFO L225 Difference]: With dead ends: 14404 [2021-07-09 17:53:32,646 INFO L226 Difference]: Without dead ends: 13806 [2021-07-09 17:53:32,647 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 74.6ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-07-09 17:53:32,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13806 states. [2021-07-09 17:53:32,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13806 to 9515. [2021-07-09 17:53:32,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9515 states, 9514 states have (on average 2.974248475930208) internal successors, (28297), 9514 states have internal predecessors, (28297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:32,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9515 states to 9515 states and 28297 transitions. [2021-07-09 17:53:32,920 INFO L78 Accepts]: Start accepts. Automaton has 9515 states and 28297 transitions. Word has length 39 [2021-07-09 17:53:32,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:32,920 INFO L482 AbstractCegarLoop]: Abstraction has 9515 states and 28297 transitions. [2021-07-09 17:53:32,920 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:32,920 INFO L276 IsEmpty]: Start isEmpty. Operand 9515 states and 28297 transitions. [2021-07-09 17:53:32,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:32,934 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:32,934 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:32,934 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-07-09 17:53:32,934 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:32,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:32,935 INFO L82 PathProgramCache]: Analyzing trace with hash -467836166, now seen corresponding path program 32 times [2021-07-09 17:53:32,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:32,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302995369] [2021-07-09 17:53:32,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:32,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:32,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:32,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302995369] [2021-07-09 17:53:32,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302995369] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:32,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:32,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:53:32,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358675623] [2021-07-09 17:53:32,982 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 17:53:32,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:32,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 17:53:32,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:53:32,983 INFO L87 Difference]: Start difference. First operand 9515 states and 28297 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:33,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:33,246 INFO L93 Difference]: Finished difference Result 14734 states and 43845 transitions. [2021-07-09 17:53:33,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 17:53:33,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:33,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:33,277 INFO L225 Difference]: With dead ends: 14734 [2021-07-09 17:53:33,277 INFO L226 Difference]: Without dead ends: 14686 [2021-07-09 17:53:33,278 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 43.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:53:33,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14686 states. [2021-07-09 17:53:33,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14686 to 9376. [2021-07-09 17:53:33,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9376 states, 9375 states have (on average 2.9634133333333335) internal successors, (27782), 9375 states have internal predecessors, (27782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:33,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9376 states to 9376 states and 27782 transitions. [2021-07-09 17:53:33,457 INFO L78 Accepts]: Start accepts. Automaton has 9376 states and 27782 transitions. Word has length 39 [2021-07-09 17:53:33,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:33,457 INFO L482 AbstractCegarLoop]: Abstraction has 9376 states and 27782 transitions. [2021-07-09 17:53:33,457 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:33,457 INFO L276 IsEmpty]: Start isEmpty. Operand 9376 states and 27782 transitions. [2021-07-09 17:53:33,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:33,471 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:33,471 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:33,471 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-07-09 17:53:33,471 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:33,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:33,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1133062906, now seen corresponding path program 33 times [2021-07-09 17:53:33,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:33,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627474264] [2021-07-09 17:53:33,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:33,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:33,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:33,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627474264] [2021-07-09 17:53:33,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627474264] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:33,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:33,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 17:53:33,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814279511] [2021-07-09 17:53:33,518 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:53:33,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:33,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:53:33,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:53:33,519 INFO L87 Difference]: Start difference. First operand 9376 states and 27782 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:33,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:33,877 INFO L93 Difference]: Finished difference Result 14599 states and 43322 transitions. [2021-07-09 17:53:33,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-09 17:53:33,877 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:33,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:33,914 INFO L225 Difference]: With dead ends: 14599 [2021-07-09 17:53:33,915 INFO L226 Difference]: Without dead ends: 14479 [2021-07-09 17:53:33,916 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 62.7ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-07-09 17:53:33,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14479 states. [2021-07-09 17:53:34,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14479 to 9268. [2021-07-09 17:53:34,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9268 states, 9267 states have (on average 2.9584547318441783) internal successors, (27416), 9267 states have internal predecessors, (27416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:34,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9268 states to 9268 states and 27416 transitions. [2021-07-09 17:53:34,159 INFO L78 Accepts]: Start accepts. Automaton has 9268 states and 27416 transitions. Word has length 39 [2021-07-09 17:53:34,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:34,159 INFO L482 AbstractCegarLoop]: Abstraction has 9268 states and 27416 transitions. [2021-07-09 17:53:34,159 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:34,159 INFO L276 IsEmpty]: Start isEmpty. Operand 9268 states and 27416 transitions. [2021-07-09 17:53:34,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:34,176 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:34,176 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:34,176 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-07-09 17:53:34,176 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:34,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:34,176 INFO L82 PathProgramCache]: Analyzing trace with hash -545879528, now seen corresponding path program 34 times [2021-07-09 17:53:34,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:34,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258299194] [2021-07-09 17:53:34,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:34,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:34,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:34,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258299194] [2021-07-09 17:53:34,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258299194] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:34,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:34,244 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:53:34,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012700015] [2021-07-09 17:53:34,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 17:53:34,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:34,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 17:53:34,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:53:34,246 INFO L87 Difference]: Start difference. First operand 9268 states and 27416 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:34,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:34,591 INFO L93 Difference]: Finished difference Result 14208 states and 42268 transitions. [2021-07-09 17:53:34,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 17:53:34,591 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:34,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:34,619 INFO L225 Difference]: With dead ends: 14208 [2021-07-09 17:53:34,619 INFO L226 Difference]: Without dead ends: 14016 [2021-07-09 17:53:34,619 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 81.3ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-07-09 17:53:34,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14016 states. [2021-07-09 17:53:34,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14016 to 9164. [2021-07-09 17:53:34,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9164 states, 9163 states have (on average 2.960820691913129) internal successors, (27130), 9163 states have internal predecessors, (27130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:34,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9164 states to 9164 states and 27130 transitions. [2021-07-09 17:53:34,791 INFO L78 Accepts]: Start accepts. Automaton has 9164 states and 27130 transitions. Word has length 39 [2021-07-09 17:53:34,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:34,791 INFO L482 AbstractCegarLoop]: Abstraction has 9164 states and 27130 transitions. [2021-07-09 17:53:34,791 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:34,791 INFO L276 IsEmpty]: Start isEmpty. Operand 9164 states and 27130 transitions. [2021-07-09 17:53:34,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:34,804 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:34,804 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:34,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-07-09 17:53:34,805 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:34,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:34,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1948403812, now seen corresponding path program 35 times [2021-07-09 17:53:34,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:34,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201672161] [2021-07-09 17:53:34,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:34,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:34,868 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:34,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201672161] [2021-07-09 17:53:34,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201672161] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:34,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:34,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-09 17:53:34,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170648637] [2021-07-09 17:53:34,869 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-09 17:53:34,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:34,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-09 17:53:34,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:53:34,870 INFO L87 Difference]: Start difference. First operand 9164 states and 27130 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:35,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:35,384 INFO L93 Difference]: Finished difference Result 14134 states and 42012 transitions. [2021-07-09 17:53:35,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-09 17:53:35,385 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:35,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:35,423 INFO L225 Difference]: With dead ends: 14134 [2021-07-09 17:53:35,423 INFO L226 Difference]: Without dead ends: 13966 [2021-07-09 17:53:35,424 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 131.3ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-07-09 17:53:35,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13966 states. [2021-07-09 17:53:35,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13966 to 9158. [2021-07-09 17:53:35,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9158 states, 9157 states have (on average 2.9588293109096866) internal successors, (27094), 9157 states have internal predecessors, (27094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:35,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9158 states to 9158 states and 27094 transitions. [2021-07-09 17:53:35,656 INFO L78 Accepts]: Start accepts. Automaton has 9158 states and 27094 transitions. Word has length 39 [2021-07-09 17:53:35,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:35,656 INFO L482 AbstractCegarLoop]: Abstraction has 9158 states and 27094 transitions. [2021-07-09 17:53:35,657 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:35,657 INFO L276 IsEmpty]: Start isEmpty. Operand 9158 states and 27094 transitions. [2021-07-09 17:53:35,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:35,670 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:35,670 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:35,670 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-07-09 17:53:35,670 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:35,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:35,670 INFO L82 PathProgramCache]: Analyzing trace with hash -426772262, now seen corresponding path program 36 times [2021-07-09 17:53:35,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:35,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706167994] [2021-07-09 17:53:35,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:35,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:35,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:35,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706167994] [2021-07-09 17:53:35,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706167994] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:35,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:35,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:53:35,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892113319] [2021-07-09 17:53:35,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 17:53:35,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:35,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 17:53:35,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:53:35,712 INFO L87 Difference]: Start difference. First operand 9158 states and 27094 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:35,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:35,950 INFO L93 Difference]: Finished difference Result 14594 states and 43056 transitions. [2021-07-09 17:53:35,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 17:53:35,951 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:35,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:35,980 INFO L225 Difference]: With dead ends: 14594 [2021-07-09 17:53:35,981 INFO L226 Difference]: Without dead ends: 14466 [2021-07-09 17:53:35,981 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 38.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:53:36,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14466 states. [2021-07-09 17:53:36,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14466 to 9094. [2021-07-09 17:53:36,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9094 states, 9093 states have (on average 2.9493016606180578) internal successors, (26818), 9093 states have internal predecessors, (26818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:36,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9094 states to 9094 states and 26818 transitions. [2021-07-09 17:53:36,147 INFO L78 Accepts]: Start accepts. Automaton has 9094 states and 26818 transitions. Word has length 39 [2021-07-09 17:53:36,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:36,147 INFO L482 AbstractCegarLoop]: Abstraction has 9094 states and 26818 transitions. [2021-07-09 17:53:36,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:36,147 INFO L276 IsEmpty]: Start isEmpty. Operand 9094 states and 26818 transitions. [2021-07-09 17:53:36,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:36,159 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:36,160 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:36,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-07-09 17:53:36,160 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:36,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:36,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1978893530, now seen corresponding path program 37 times [2021-07-09 17:53:36,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:36,160 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600244795] [2021-07-09 17:53:36,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:36,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:36,206 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:36,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600244795] [2021-07-09 17:53:36,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600244795] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:36,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:36,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 17:53:36,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926262885] [2021-07-09 17:53:36,207 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:53:36,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:36,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:53:36,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:53:36,208 INFO L87 Difference]: Start difference. First operand 9094 states and 26818 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:36,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:36,545 INFO L93 Difference]: Finished difference Result 14494 states and 42702 transitions. [2021-07-09 17:53:36,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-09 17:53:36,545 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:36,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:36,583 INFO L225 Difference]: With dead ends: 14494 [2021-07-09 17:53:36,584 INFO L226 Difference]: Without dead ends: 14022 [2021-07-09 17:53:36,585 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 62.2ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-07-09 17:53:36,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14022 states. [2021-07-09 17:53:36,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14022 to 8890. [2021-07-09 17:53:36,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8890 states, 8889 states have (on average 2.937338283271459) internal successors, (26110), 8889 states have internal predecessors, (26110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:36,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8890 states to 8890 states and 26110 transitions. [2021-07-09 17:53:36,806 INFO L78 Accepts]: Start accepts. Automaton has 8890 states and 26110 transitions. Word has length 39 [2021-07-09 17:53:36,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:36,806 INFO L482 AbstractCegarLoop]: Abstraction has 8890 states and 26110 transitions. [2021-07-09 17:53:36,806 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:36,806 INFO L276 IsEmpty]: Start isEmpty. Operand 8890 states and 26110 transitions. [2021-07-09 17:53:36,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:36,819 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:36,819 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:36,819 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-07-09 17:53:36,819 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:36,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:36,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1231907832, now seen corresponding path program 38 times [2021-07-09 17:53:36,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:36,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790153548] [2021-07-09 17:53:36,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:36,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:36,872 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:36,872 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790153548] [2021-07-09 17:53:36,872 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790153548] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:36,872 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:36,872 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:53:36,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79780869] [2021-07-09 17:53:36,873 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 17:53:36,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:36,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 17:53:36,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:53:36,873 INFO L87 Difference]: Start difference. First operand 8890 states and 26110 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:37,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:37,244 INFO L93 Difference]: Finished difference Result 14086 states and 41514 transitions. [2021-07-09 17:53:37,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 17:53:37,245 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:37,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:37,281 INFO L225 Difference]: With dead ends: 14086 [2021-07-09 17:53:37,281 INFO L226 Difference]: Without dead ends: 13386 [2021-07-09 17:53:37,281 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 83.0ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-07-09 17:53:37,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13386 states. [2021-07-09 17:53:37,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13386 to 8674. [2021-07-09 17:53:37,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8674 states, 8673 states have (on average 2.945462930935086) internal successors, (25546), 8673 states have internal predecessors, (25546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:37,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8674 states to 8674 states and 25546 transitions. [2021-07-09 17:53:37,445 INFO L78 Accepts]: Start accepts. Automaton has 8674 states and 25546 transitions. Word has length 39 [2021-07-09 17:53:37,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:37,445 INFO L482 AbstractCegarLoop]: Abstraction has 8674 states and 25546 transitions. [2021-07-09 17:53:37,445 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:37,445 INFO L276 IsEmpty]: Start isEmpty. Operand 8674 states and 25546 transitions. [2021-07-09 17:53:37,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:37,458 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:37,458 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:37,458 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-07-09 17:53:37,458 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:37,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:37,458 INFO L82 PathProgramCache]: Analyzing trace with hash 64823676, now seen corresponding path program 39 times [2021-07-09 17:53:37,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:37,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810405864] [2021-07-09 17:53:37,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:37,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:37,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:37,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810405864] [2021-07-09 17:53:37,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810405864] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:37,517 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:37,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-09 17:53:37,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759637404] [2021-07-09 17:53:37,517 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-09 17:53:37,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:37,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-09 17:53:37,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:53:37,518 INFO L87 Difference]: Start difference. First operand 8674 states and 25546 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:37,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:37,917 INFO L93 Difference]: Finished difference Result 13828 states and 40806 transitions. [2021-07-09 17:53:37,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-09 17:53:37,918 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:37,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:37,946 INFO L225 Difference]: With dead ends: 13828 [2021-07-09 17:53:37,947 INFO L226 Difference]: Without dead ends: 13182 [2021-07-09 17:53:37,947 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 122.9ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-07-09 17:53:37,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13182 states. [2021-07-09 17:53:38,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13182 to 8470. [2021-07-09 17:53:38,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8470 states, 8469 states have (on average 2.964694769158106) internal successors, (25108), 8469 states have internal predecessors, (25108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:38,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8470 states to 8470 states and 25108 transitions. [2021-07-09 17:53:38,136 INFO L78 Accepts]: Start accepts. Automaton has 8470 states and 25108 transitions. Word has length 39 [2021-07-09 17:53:38,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:38,136 INFO L482 AbstractCegarLoop]: Abstraction has 8470 states and 25108 transitions. [2021-07-09 17:53:38,136 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:38,136 INFO L276 IsEmpty]: Start isEmpty. Operand 8470 states and 25108 transitions. [2021-07-09 17:53:38,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:38,149 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:38,149 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:38,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-07-09 17:53:38,149 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:38,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:38,149 INFO L82 PathProgramCache]: Analyzing trace with hash -695140544, now seen corresponding path program 40 times [2021-07-09 17:53:38,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:38,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861334308] [2021-07-09 17:53:38,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:38,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:38,212 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:38,212 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861334308] [2021-07-09 17:53:38,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861334308] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:38,212 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:38,212 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-09 17:53:38,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608607003] [2021-07-09 17:53:38,213 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-09 17:53:38,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:38,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-09 17:53:38,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:53:38,213 INFO L87 Difference]: Start difference. First operand 8470 states and 25108 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:38,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:38,669 INFO L93 Difference]: Finished difference Result 13371 states and 39611 transitions. [2021-07-09 17:53:38,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-09 17:53:38,669 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:38,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:38,695 INFO L225 Difference]: With dead ends: 13371 [2021-07-09 17:53:38,695 INFO L226 Difference]: Without dead ends: 12735 [2021-07-09 17:53:38,696 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 121.3ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-07-09 17:53:38,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12735 states. [2021-07-09 17:53:38,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12735 to 7590. [2021-07-09 17:53:38,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7590 states, 7589 states have (on average 2.960469100013177) internal successors, (22467), 7589 states have internal predecessors, (22467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:38,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7590 states to 7590 states and 22467 transitions. [2021-07-09 17:53:38,870 INFO L78 Accepts]: Start accepts. Automaton has 7590 states and 22467 transitions. Word has length 39 [2021-07-09 17:53:38,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:38,870 INFO L482 AbstractCegarLoop]: Abstraction has 7590 states and 22467 transitions. [2021-07-09 17:53:38,870 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:38,870 INFO L276 IsEmpty]: Start isEmpty. Operand 7590 states and 22467 transitions. [2021-07-09 17:53:38,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:38,881 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:38,881 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:38,881 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-07-09 17:53:38,881 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:38,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:38,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1794340302, now seen corresponding path program 41 times [2021-07-09 17:53:38,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:38,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993693450] [2021-07-09 17:53:38,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:38,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:38,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:38,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993693450] [2021-07-09 17:53:38,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993693450] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:38,923 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:38,923 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 17:53:38,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599572053] [2021-07-09 17:53:38,923 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:53:38,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:38,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:53:38,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:53:38,924 INFO L87 Difference]: Start difference. First operand 7590 states and 22467 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:39,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:39,213 INFO L93 Difference]: Finished difference Result 12745 states and 37674 transitions. [2021-07-09 17:53:39,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-09 17:53:39,213 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:39,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:39,247 INFO L225 Difference]: With dead ends: 12745 [2021-07-09 17:53:39,248 INFO L226 Difference]: Without dead ends: 12601 [2021-07-09 17:53:39,248 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 56.3ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-07-09 17:53:39,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12601 states. [2021-07-09 17:53:39,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12601 to 7346. [2021-07-09 17:53:39,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7346 states, 7345 states have (on average 2.9400953029271615) internal successors, (21595), 7345 states have internal predecessors, (21595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:39,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7346 states to 7346 states and 21595 transitions. [2021-07-09 17:53:39,399 INFO L78 Accepts]: Start accepts. Automaton has 7346 states and 21595 transitions. Word has length 39 [2021-07-09 17:53:39,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:39,399 INFO L482 AbstractCegarLoop]: Abstraction has 7346 states and 21595 transitions. [2021-07-09 17:53:39,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:39,399 INFO L276 IsEmpty]: Start isEmpty. Operand 7346 states and 21595 transitions. [2021-07-09 17:53:39,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:39,409 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:39,409 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:39,409 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-07-09 17:53:39,410 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:39,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:39,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1613437490, now seen corresponding path program 42 times [2021-07-09 17:53:39,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:39,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445510004] [2021-07-09 17:53:39,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:39,460 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:39,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445510004] [2021-07-09 17:53:39,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445510004] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:39,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:39,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:53:39,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692692714] [2021-07-09 17:53:39,460 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 17:53:39,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:39,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 17:53:39,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:53:39,461 INFO L87 Difference]: Start difference. First operand 7346 states and 21595 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:39,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:39,800 INFO L93 Difference]: Finished difference Result 11821 states and 34814 transitions. [2021-07-09 17:53:39,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 17:53:39,801 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:39,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:39,822 INFO L225 Difference]: With dead ends: 11821 [2021-07-09 17:53:39,823 INFO L226 Difference]: Without dead ends: 11629 [2021-07-09 17:53:39,823 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 78.0ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-07-09 17:53:39,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11629 states. [2021-07-09 17:53:39,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11629 to 7242. [2021-07-09 17:53:39,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7242 states, 7241 states have (on average 2.9428255765778206) internal successors, (21309), 7241 states have internal predecessors, (21309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:39,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7242 states to 7242 states and 21309 transitions. [2021-07-09 17:53:39,985 INFO L78 Accepts]: Start accepts. Automaton has 7242 states and 21309 transitions. Word has length 39 [2021-07-09 17:53:39,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:39,985 INFO L482 AbstractCegarLoop]: Abstraction has 7242 states and 21309 transitions. [2021-07-09 17:53:39,985 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:39,985 INFO L276 IsEmpty]: Start isEmpty. Operand 7242 states and 21309 transitions. [2021-07-09 17:53:39,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:39,997 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:39,997 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:39,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-07-09 17:53:39,997 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:39,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:39,998 INFO L82 PathProgramCache]: Analyzing trace with hash -798629012, now seen corresponding path program 43 times [2021-07-09 17:53:39,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:39,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687839449] [2021-07-09 17:53:39,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:40,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:40,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:40,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687839449] [2021-07-09 17:53:40,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687839449] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:40,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:40,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-09 17:53:40,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317650110] [2021-07-09 17:53:40,066 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-09 17:53:40,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:40,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-09 17:53:40,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:53:40,067 INFO L87 Difference]: Start difference. First operand 7242 states and 21309 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:40,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:40,502 INFO L93 Difference]: Finished difference Result 11315 states and 33296 transitions. [2021-07-09 17:53:40,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-09 17:53:40,502 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:40,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:40,524 INFO L225 Difference]: With dead ends: 11315 [2021-07-09 17:53:40,524 INFO L226 Difference]: Without dead ends: 11099 [2021-07-09 17:53:40,525 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 116.2ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-07-09 17:53:40,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11099 states. [2021-07-09 17:53:40,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11099 to 7008. [2021-07-09 17:53:40,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7008 states, 7007 states have (on average 2.97445411731126) internal successors, (20842), 7007 states have internal predecessors, (20842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:40,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7008 states to 7008 states and 20842 transitions. [2021-07-09 17:53:40,674 INFO L78 Accepts]: Start accepts. Automaton has 7008 states and 20842 transitions. Word has length 39 [2021-07-09 17:53:40,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:40,674 INFO L482 AbstractCegarLoop]: Abstraction has 7008 states and 20842 transitions. [2021-07-09 17:53:40,674 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:40,674 INFO L276 IsEmpty]: Start isEmpty. Operand 7008 states and 20842 transitions. [2021-07-09 17:53:40,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:40,685 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:40,685 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:40,685 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-07-09 17:53:40,685 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:40,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:40,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1171875732, now seen corresponding path program 44 times [2021-07-09 17:53:40,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:40,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576385153] [2021-07-09 17:53:40,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:40,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:40,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:40,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576385153] [2021-07-09 17:53:40,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576385153] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:40,726 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:40,726 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:53:40,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241299674] [2021-07-09 17:53:40,726 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 17:53:40,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:40,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 17:53:40,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:53:40,727 INFO L87 Difference]: Start difference. First operand 7008 states and 20842 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:40,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:40,835 INFO L93 Difference]: Finished difference Result 9444 states and 26929 transitions. [2021-07-09 17:53:40,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 17:53:40,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:40,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:40,851 INFO L225 Difference]: With dead ends: 9444 [2021-07-09 17:53:40,852 INFO L226 Difference]: Without dead ends: 8824 [2021-07-09 17:53:40,852 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.0ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:53:40,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8824 states. [2021-07-09 17:53:40,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8824 to 4125. [2021-07-09 17:53:40,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4125 states, 4124 states have (on average 2.908341416100873) internal successors, (11994), 4124 states have internal predecessors, (11994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:40,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4125 states to 4125 states and 11994 transitions. [2021-07-09 17:53:40,944 INFO L78 Accepts]: Start accepts. Automaton has 4125 states and 11994 transitions. Word has length 39 [2021-07-09 17:53:40,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:40,944 INFO L482 AbstractCegarLoop]: Abstraction has 4125 states and 11994 transitions. [2021-07-09 17:53:40,944 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:40,944 INFO L276 IsEmpty]: Start isEmpty. Operand 4125 states and 11994 transitions. [2021-07-09 17:53:40,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:40,949 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:40,950 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:40,950 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-07-09 17:53:40,950 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:40,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:40,950 INFO L82 PathProgramCache]: Analyzing trace with hash -584066286, now seen corresponding path program 45 times [2021-07-09 17:53:40,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:40,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011299737] [2021-07-09 17:53:40,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:40,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:40,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:40,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011299737] [2021-07-09 17:53:40,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011299737] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:40,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:40,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:53:40,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771742449] [2021-07-09 17:53:40,994 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 17:53:40,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:40,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 17:53:40,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:53:40,995 INFO L87 Difference]: Start difference. First operand 4125 states and 11994 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:41,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:41,175 INFO L93 Difference]: Finished difference Result 6107 states and 16719 transitions. [2021-07-09 17:53:41,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:53:41,176 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:41,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:41,184 INFO L225 Difference]: With dead ends: 6107 [2021-07-09 17:53:41,184 INFO L226 Difference]: Without dead ends: 4693 [2021-07-09 17:53:41,184 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 40.0ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:53:41,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4693 states. [2021-07-09 17:53:41,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4693 to 2542. [2021-07-09 17:53:41,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2542 states, 2541 states have (on average 2.786698150334514) internal successors, (7081), 2541 states have internal predecessors, (7081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:41,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 7081 transitions. [2021-07-09 17:53:41,231 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 7081 transitions. Word has length 39 [2021-07-09 17:53:41,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:41,231 INFO L482 AbstractCegarLoop]: Abstraction has 2542 states and 7081 transitions. [2021-07-09 17:53:41,232 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:41,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 7081 transitions. [2021-07-09 17:53:41,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:41,234 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:41,234 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:41,234 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-07-09 17:53:41,235 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:41,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:41,235 INFO L82 PathProgramCache]: Analyzing trace with hash 146118098, now seen corresponding path program 46 times [2021-07-09 17:53:41,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:41,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240727772] [2021-07-09 17:53:41,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:41,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:41,300 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:41,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240727772] [2021-07-09 17:53:41,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240727772] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:41,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:41,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:53:41,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139098763] [2021-07-09 17:53:41,301 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 17:53:41,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:41,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 17:53:41,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:53:41,302 INFO L87 Difference]: Start difference. First operand 2542 states and 7081 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:41,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:41,556 INFO L93 Difference]: Finished difference Result 1862 states and 4307 transitions. [2021-07-09 17:53:41,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 17:53:41,556 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:41,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:41,557 INFO L225 Difference]: With dead ends: 1862 [2021-07-09 17:53:41,557 INFO L226 Difference]: Without dead ends: 648 [2021-07-09 17:53:41,557 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 88.0ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-07-09 17:53:41,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-07-09 17:53:41,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 456. [2021-07-09 17:53:41,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 2.4329670329670328) internal successors, (1107), 455 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:41,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1107 transitions. [2021-07-09 17:53:41,563 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1107 transitions. Word has length 39 [2021-07-09 17:53:41,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:41,564 INFO L482 AbstractCegarLoop]: Abstraction has 456 states and 1107 transitions. [2021-07-09 17:53:41,564 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:41,564 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1107 transitions. [2021-07-09 17:53:41,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 17:53:41,564 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:41,564 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:41,565 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-07-09 17:53:41,565 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:41,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:41,565 INFO L82 PathProgramCache]: Analyzing trace with hash 301544324, now seen corresponding path program 47 times [2021-07-09 17:53:41,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:41,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916078300] [2021-07-09 17:53:41,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:41,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:41,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:41,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916078300] [2021-07-09 17:53:41,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916078300] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:41,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:41,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-09 17:53:41,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568087264] [2021-07-09 17:53:41,632 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-09 17:53:41,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:41,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-09 17:53:41,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:53:41,633 INFO L87 Difference]: Start difference. First operand 456 states and 1107 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:41,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:41,807 INFO L93 Difference]: Finished difference Result 391 states and 811 transitions. [2021-07-09 17:53:41,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-09 17:53:41,808 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 17:53:41,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:41,808 INFO L225 Difference]: With dead ends: 391 [2021-07-09 17:53:41,808 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 17:53:41,808 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 98.1ms TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:53:41,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 17:53:41,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 17:53:41,809 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) [2021-07-09 17:53:41,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 17:53:41,809 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2021-07-09 17:53:41,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:41,809 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 17:53:41,809 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:41,809 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 17:53:41,809 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 17:53:41,809 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-07-09 17:53:41,811 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 17:53:41,813 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 05:53:41 BasicIcfg [2021-07-09 17:53:41,813 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 17:53:41,813 INFO L168 Benchmark]: Toolchain (without parser) took 51847.52 ms. Allocated memory was 188.7 MB in the beginning and 7.9 GB in the end (delta: 7.7 GB). Free memory was 170.2 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 6.1 GB. Max. memory is 8.0 GB. [2021-07-09 17:53:41,814 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 188.7 MB. Free memory is still 171.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 17:53:41,814 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.43 ms. Allocated memory is still 188.7 MB. Free memory was 170.1 MB in the beginning and 168.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 17:53:41,814 INFO L168 Benchmark]: Boogie Preprocessor took 21.25 ms. Allocated memory is still 188.7 MB. Free memory was 168.7 MB in the beginning and 167.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 17:53:41,814 INFO L168 Benchmark]: RCFGBuilder took 271.08 ms. Allocated memory is still 188.7 MB. Free memory was 167.6 MB in the beginning and 152.3 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-07-09 17:53:41,814 INFO L168 Benchmark]: TraceAbstraction took 51527.44 ms. Allocated memory was 188.7 MB in the beginning and 7.9 GB in the end (delta: 7.7 GB). Free memory was 151.9 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 6.1 GB. Max. memory is 8.0 GB. [2021-07-09 17:53:41,814 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 188.7 MB. Free memory is still 171.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 22.43 ms. Allocated memory is still 188.7 MB. Free memory was 170.1 MB in the beginning and 168.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 21.25 ms. Allocated memory is still 188.7 MB. Free memory was 168.7 MB in the beginning and 167.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 271.08 ms. Allocated memory is still 188.7 MB. Free memory was 167.6 MB in the beginning and 152.3 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 51527.44 ms. Allocated memory was 188.7 MB in the beginning and 7.9 GB in the end (delta: 7.7 GB). Free memory was 151.9 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 6.1 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 95]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 11 procedures, 83 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 51433.0ms, OverallIterations: 47, TraceHistogramMax: 1, EmptinessCheckTime: 2056.1ms, AutomataDifference: 22642.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 498.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3516 SDtfs, 5019 SDslu, 12265 SDs, 0 SdLazy, 13048 SolverSat, 2043 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6870.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 574 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 449 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 2704.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24666occurred in iteration=11, InterpolantAutomatonStates: 453, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 23127.0ms AutomataMinimizationTime, 47 MinimizatonAttempts, 380099 StatesRemovedByMinimization, 44 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 73.8ms SsaConstructionTime, 267.2ms SatisfiabilityAnalysisTime, 2459.3ms InterpolantComputationTime, 1833 NumberOfCodeBlocks, 1833 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 1786 ConstructedInterpolants, 0 QuantifiedInterpolants, 5210 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 47 InterpolantComputations, 47 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...