/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-3.wvr.bpl
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This is Ultimate 0.2.1-dev-29289db
[2021-06-05 05:15:35,272 INFO L177 SettingsManager]: Resetting all preferences to default values...
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[2021-06-05 05:15:35,372 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
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[2021-06-05 05:15:35,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-06-05 05:15:35,406 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-06-05 05:15:35,406 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-06-05 05:15:35,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-06-05 05:15:35,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-06-05 05:15:35,409 INFO L138 SettingsManager]: * Use SBE=true
[2021-06-05 05:15:35,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-06-05 05:15:35,409 INFO L138 SettingsManager]: * sizeof long=4
[2021-06-05 05:15:35,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-06-05 05:15:35,410 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-06-05 05:15:35,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-06-05 05:15:35,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-06-05 05:15:35,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-06-05 05:15:35,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-06-05 05:15:35,411 INFO L138 SettingsManager]: * sizeof long double=12
[2021-06-05 05:15:35,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-06-05 05:15:35,411 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-06-05 05:15:35,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-06-05 05:15:35,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-06-05 05:15:35,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-06-05 05:15:35,412 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-06-05 05:15:35,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-06-05 05:15:35,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-06-05 05:15:35,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-06-05 05:15:35,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-06-05 05:15:35,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-06-05 05:15:35,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-06-05 05:15:35,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-06-05 05:15:35,413 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-06-05 05:15:35,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-06-05 05:15:35,413 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-06-05 05:15:35,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-06-05 05:15:35,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-06-05 05:15:35,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-06-05 05:15:35,753 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser...
[2021-06-05 05:15:35,754 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized
[2021-06-05 05:15:35,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-3.wvr.bpl
[2021-06-05 05:15:35,755 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-3.wvr.bpl'
[2021-06-05 05:15:35,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-06-05 05:15:35,867 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-06-05 05:15:35,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-06-05 05:15:35,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-06-05 05:15:35,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-06-05 05:15:35,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:15:35" (1/1) ...
[2021-06-05 05:15:35,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:15:35" (1/1) ...
[2021-06-05 05:15:35,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-06-05 05:15:35,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-06-05 05:15:35,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-06-05 05:15:35,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-06-05 05:15:35,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:15:35" (1/1) ...
[2021-06-05 05:15:35,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:15:35" (1/1) ...
[2021-06-05 05:15:35,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:15:35" (1/1) ...
[2021-06-05 05:15:35,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:15:35" (1/1) ...
[2021-06-05 05:15:35,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:15:35" (1/1) ...
[2021-06-05 05:15:35,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:15:35" (1/1) ...
[2021-06-05 05:15:35,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:15:35" (1/1) ...
[2021-06-05 05:15:35,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-06-05 05:15:35,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-06-05 05:15:35,914 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-06-05 05:15:35,914 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-06-05 05:15:35,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:15:35" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-06-05 05:15:35,994 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration
[2021-06-05 05:15:35,994 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2021-06-05 05:15:35,995 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2021-06-05 05:15:35,995 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration
[2021-06-05 05:15:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2021-06-05 05:15:35,995 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2021-06-05 05:15:35,995 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration
[2021-06-05 05:15:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-06-05 05:15:35,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-06-05 05:15:35,996 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration
[2021-06-05 05:15:35,996 INFO L130 BoogieDeclarations]: Found specification of procedure thread3
[2021-06-05 05:15:35,996 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3
[2021-06-05 05:15:35,998 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2021-06-05 05:15:36,250 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-06-05 05:15:36,250 INFO L299 CfgBuilder]: Removed 0 assume(true) statements.
[2021-06-05 05:15:36,252 INFO L202 PluginConnector]: Adding new model ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 05:15:36 BoogieIcfgContainer
[2021-06-05 05:15:36,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-06-05 05:15:36,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-06-05 05:15:36,253 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-06-05 05:15:36,255 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-06-05 05:15:36,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:15:35" (1/2) ...
[2021-06-05 05:15:36,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cafa71b and model type ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 05:15:36, skipping insertion in model container
[2021-06-05 05:15:36,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 05:15:36" (2/2) ...
[2021-06-05 05:15:36,258 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-3.wvr.bpl
[2021-06-05 05:15:36,263 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2021-06-05 05:15:36,263 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-06-05 05:15:36,263 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-06-05 05:15:36,264 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2021-06-05 05:15:36,297 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions.
[2021-06-05 05:15:36,314 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations.
[2021-06-05 05:15:36,344 INFO L378 AbstractCegarLoop]: Interprodecural is true
[2021-06-05 05:15:36,345 INFO L379 AbstractCegarLoop]: Hoare is false
[2021-06-05 05:15:36,345 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-06-05 05:15:36,345 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-06-05 05:15:36,345 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-06-05 05:15:36,345 INFO L383 AbstractCegarLoop]: Difference is false
[2021-06-05 05:15:36,345 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-06-05 05:15:36,345 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-06-05 05:15:36,360 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 30 transitions, 84 flow
[2021-06-05 05:15:36,407 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 350 states, 348 states have (on average 2.5172413793103448) internal successors, (876), 349 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:36,410 INFO L276 IsEmpty]: Start isEmpty. Operand has 350 states, 348 states have (on average 2.5172413793103448) internal successors, (876), 349 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:36,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2021-06-05 05:15:36,429 INFO L513 BasicCegarLoop]: Found error trace
[2021-06-05 05:15:36,430 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-05 05:15:36,430 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-05 05:15:36,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-05 05:15:36,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1307786581, now seen corresponding path program 1 times
[2021-06-05 05:15:36,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-05 05:15:36,447 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874734641]
[2021-06-05 05:15:36,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-05 05:15:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-05 05:15:36,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-05 05:15:36,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-05 05:15:36,690 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874734641]
[2021-06-05 05:15:36,690 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874734641] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-05 05:15:36,690 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-05 05:15:36,690 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-06-05 05:15:36,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20241038]
[2021-06-05 05:15:36,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-06-05 05:15:36,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-05 05:15:36,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-06-05 05:15:36,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-06-05 05:15:36,707 INFO L87 Difference]: Start difference. First operand has 350 states, 348 states have (on average 2.5172413793103448) internal successors, (876), 349 states have internal predecessors, (876), 0 states have call successors, (0), 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 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:36,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-05 05:15:36,844 INFO L93 Difference]: Finished difference Result 667 states and 1586 transitions.
[2021-06-05 05:15:36,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-06-05 05:15:36,847 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 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 25
[2021-06-05 05:15:36,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-05 05:15:36,869 INFO L225 Difference]: With dead ends: 667
[2021-06-05 05:15:36,869 INFO L226 Difference]: Without dead ends: 667
[2021-06-05 05:15:36,870 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 57.6ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2021-06-05 05:15:36,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states.
[2021-06-05 05:15:36,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 415.
[2021-06-05 05:15:36,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 414 states have (on average 2.4589371980676327) internal successors, (1018), 414 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:36,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 1018 transitions.
[2021-06-05 05:15:36,933 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 1018 transitions. Word has length 25
[2021-06-05 05:15:36,933 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-05 05:15:36,933 INFO L482 AbstractCegarLoop]: Abstraction has 415 states and 1018 transitions.
[2021-06-05 05:15:36,933 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:36,933 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 1018 transitions.
[2021-06-05 05:15:36,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2021-06-05 05:15:36,935 INFO L513 BasicCegarLoop]: Found error trace
[2021-06-05 05:15:36,936 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-05 05:15:36,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-06-05 05:15:36,936 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-05 05:15:36,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-05 05:15:36,937 INFO L82 PathProgramCache]: Analyzing trace with hash 528814763, now seen corresponding path program 2 times
[2021-06-05 05:15:36,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-05 05:15:36,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314926683]
[2021-06-05 05:15:36,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-05 05:15:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-05 05:15:37,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-05 05:15:37,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-05 05:15:37,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314926683]
[2021-06-05 05:15:37,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314926683] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-05 05:15:37,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-05 05:15:37,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-06-05 05:15:37,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517509533]
[2021-06-05 05:15:37,020 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-06-05 05:15:37,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-05 05:15:37,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-06-05 05:15:37,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30
[2021-06-05 05:15:37,022 INFO L87 Difference]: Start difference. First operand 415 states and 1018 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:37,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-05 05:15:37,050 INFO L93 Difference]: Finished difference Result 571 states and 1381 transitions.
[2021-06-05 05:15:37,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-06-05 05:15:37,050 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 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 25
[2021-06-05 05:15:37,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-05 05:15:37,052 INFO L225 Difference]: With dead ends: 571
[2021-06-05 05:15:37,052 INFO L226 Difference]: Without dead ends: 311
[2021-06-05 05:15:37,053 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.9ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30
[2021-06-05 05:15:37,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states.
[2021-06-05 05:15:37,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311.
[2021-06-05 05:15:37,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 2.3) internal successors, (713), 310 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:37,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 713 transitions.
[2021-06-05 05:15:37,075 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 713 transitions. Word has length 25
[2021-06-05 05:15:37,075 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-05 05:15:37,075 INFO L482 AbstractCegarLoop]: Abstraction has 311 states and 713 transitions.
[2021-06-05 05:15:37,075 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:37,075 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 713 transitions.
[2021-06-05 05:15:37,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2021-06-05 05:15:37,076 INFO L513 BasicCegarLoop]: Found error trace
[2021-06-05 05:15:37,077 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-05 05:15:37,077 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-06-05 05:15:37,077 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-05 05:15:37,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-05 05:15:37,078 INFO L82 PathProgramCache]: Analyzing trace with hash -784430363, now seen corresponding path program 3 times
[2021-06-05 05:15:37,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-05 05:15:37,078 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60155670]
[2021-06-05 05:15:37,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-05 05:15:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-05 05:15:37,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-05 05:15:37,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-05 05:15:37,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60155670]
[2021-06-05 05:15:37,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60155670] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-05 05:15:37,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-05 05:15:37,134 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-06-05 05:15:37,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097022103]
[2021-06-05 05:15:37,134 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-06-05 05:15:37,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-05 05:15:37,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-06-05 05:15:37,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-06-05 05:15:37,135 INFO L87 Difference]: Start difference. First operand 311 states and 713 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:37,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-05 05:15:37,203 INFO L93 Difference]: Finished difference Result 353 states and 754 transitions.
[2021-06-05 05:15:37,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-06-05 05:15:37,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 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 25
[2021-06-05 05:15:37,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-05 05:15:37,206 INFO L225 Difference]: With dead ends: 353
[2021-06-05 05:15:37,207 INFO L226 Difference]: Without dead ends: 333
[2021-06-05 05:15:37,207 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.0ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2021-06-05 05:15:37,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states.
[2021-06-05 05:15:37,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 243.
[2021-06-05 05:15:37,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 2.169421487603306) internal successors, (525), 242 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:37,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 525 transitions.
[2021-06-05 05:15:37,220 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 525 transitions. Word has length 25
[2021-06-05 05:15:37,220 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-05 05:15:37,220 INFO L482 AbstractCegarLoop]: Abstraction has 243 states and 525 transitions.
[2021-06-05 05:15:37,220 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:37,220 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 525 transitions.
[2021-06-05 05:15:37,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2021-06-05 05:15:37,221 INFO L513 BasicCegarLoop]: Found error trace
[2021-06-05 05:15:37,221 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-05 05:15:37,222 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-06-05 05:15:37,222 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-05 05:15:37,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-05 05:15:37,223 INFO L82 PathProgramCache]: Analyzing trace with hash -2100723483, now seen corresponding path program 4 times
[2021-06-05 05:15:37,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-05 05:15:37,223 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244575215]
[2021-06-05 05:15:37,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-05 05:15:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-05 05:15:37,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-05 05:15:37,282 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-05 05:15:37,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244575215]
[2021-06-05 05:15:37,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244575215] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-05 05:15:37,282 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-05 05:15:37,282 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-06-05 05:15:37,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979038007]
[2021-06-05 05:15:37,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-06-05 05:15:37,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-05 05:15:37,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-06-05 05:15:37,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2021-06-05 05:15:37,283 INFO L87 Difference]: Start difference. First operand 243 states and 525 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:37,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-05 05:15:37,351 INFO L93 Difference]: Finished difference Result 345 states and 726 transitions.
[2021-06-05 05:15:37,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-06-05 05:15:37,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 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 25
[2021-06-05 05:15:37,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-05 05:15:37,353 INFO L225 Difference]: With dead ends: 345
[2021-06-05 05:15:37,354 INFO L226 Difference]: Without dead ends: 327
[2021-06-05 05:15:37,354 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.3ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2021-06-05 05:15:37,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states.
[2021-06-05 05:15:37,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 238.
[2021-06-05 05:15:37,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 2.1181434599156117) internal successors, (502), 237 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:37,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 502 transitions.
[2021-06-05 05:15:37,361 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 502 transitions. Word has length 25
[2021-06-05 05:15:37,361 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-05 05:15:37,361 INFO L482 AbstractCegarLoop]: Abstraction has 238 states and 502 transitions.
[2021-06-05 05:15:37,361 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:37,361 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 502 transitions.
[2021-06-05 05:15:37,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2021-06-05 05:15:37,362 INFO L513 BasicCegarLoop]: Found error trace
[2021-06-05 05:15:37,362 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-05 05:15:37,362 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-06-05 05:15:37,362 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-05 05:15:37,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-05 05:15:37,363 INFO L82 PathProgramCache]: Analyzing trace with hash 835582243, now seen corresponding path program 5 times
[2021-06-05 05:15:37,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-05 05:15:37,363 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785017660]
[2021-06-05 05:15:37,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-05 05:15:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-05 05:15:37,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-05 05:15:37,405 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-05 05:15:37,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785017660]
[2021-06-05 05:15:37,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785017660] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-05 05:15:37,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-05 05:15:37,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-06-05 05:15:37,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157404624]
[2021-06-05 05:15:37,406 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states
[2021-06-05 05:15:37,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-05 05:15:37,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-06-05 05:15:37,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2021-06-05 05:15:37,407 INFO L87 Difference]: Start difference. First operand 238 states and 502 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:37,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-05 05:15:37,518 INFO L93 Difference]: Finished difference Result 354 states and 725 transitions.
[2021-06-05 05:15:37,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-06-05 05:15:37,518 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 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 25
[2021-06-05 05:15:37,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-05 05:15:37,520 INFO L225 Difference]: With dead ends: 354
[2021-06-05 05:15:37,520 INFO L226 Difference]: Without dead ends: 330
[2021-06-05 05:15:37,521 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 42.1ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2021-06-05 05:15:37,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states.
[2021-06-05 05:15:37,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 234.
[2021-06-05 05:15:37,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 2.07725321888412) internal successors, (484), 233 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:37,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 484 transitions.
[2021-06-05 05:15:37,528 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 484 transitions. Word has length 25
[2021-06-05 05:15:37,529 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-05 05:15:37,529 INFO L482 AbstractCegarLoop]: Abstraction has 234 states and 484 transitions.
[2021-06-05 05:15:37,529 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:37,529 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 484 transitions.
[2021-06-05 05:15:37,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2021-06-05 05:15:37,530 INFO L513 BasicCegarLoop]: Found error trace
[2021-06-05 05:15:37,530 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-05 05:15:37,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-06-05 05:15:37,530 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-05 05:15:37,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-05 05:15:37,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1673351899, now seen corresponding path program 6 times
[2021-06-05 05:15:37,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-05 05:15:37,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496099249]
[2021-06-05 05:15:37,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-05 05:15:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-05 05:15:37,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-05 05:15:37,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-05 05:15:37,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496099249]
[2021-06-05 05:15:37,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496099249] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-05 05:15:37,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-05 05:15:37,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-06-05 05:15:37,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711493273]
[2021-06-05 05:15:37,632 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-06-05 05:15:37,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-05 05:15:37,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-06-05 05:15:37,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2021-06-05 05:15:37,633 INFO L87 Difference]: Start difference. First operand 234 states and 484 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:37,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-05 05:15:37,698 INFO L93 Difference]: Finished difference Result 322 states and 654 transitions.
[2021-06-05 05:15:37,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-06-05 05:15:37,699 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 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 25
[2021-06-05 05:15:37,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-05 05:15:37,701 INFO L225 Difference]: With dead ends: 322
[2021-06-05 05:15:37,701 INFO L226 Difference]: Without dead ends: 306
[2021-06-05 05:15:37,701 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 38.1ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2021-06-05 05:15:37,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states.
[2021-06-05 05:15:37,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 226.
[2021-06-05 05:15:37,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 2.057777777777778) internal successors, (463), 225 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:37,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 463 transitions.
[2021-06-05 05:15:37,709 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 463 transitions. Word has length 25
[2021-06-05 05:15:37,709 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-05 05:15:37,711 INFO L482 AbstractCegarLoop]: Abstraction has 226 states and 463 transitions.
[2021-06-05 05:15:37,712 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:37,713 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 463 transitions.
[2021-06-05 05:15:37,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2021-06-05 05:15:37,717 INFO L513 BasicCegarLoop]: Found error trace
[2021-06-05 05:15:37,717 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-05 05:15:37,717 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-06-05 05:15:37,717 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-05 05:15:37,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-05 05:15:37,718 INFO L82 PathProgramCache]: Analyzing trace with hash -949575633, now seen corresponding path program 7 times
[2021-06-05 05:15:37,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-05 05:15:37,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650153791]
[2021-06-05 05:15:37,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-05 05:15:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-05 05:15:37,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-05 05:15:37,774 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-05 05:15:37,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650153791]
[2021-06-05 05:15:37,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650153791] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-05 05:15:37,774 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-05 05:15:37,774 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-06-05 05:15:37,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373247788]
[2021-06-05 05:15:37,775 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states
[2021-06-05 05:15:37,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-05 05:15:37,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-06-05 05:15:37,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2021-06-05 05:15:37,775 INFO L87 Difference]: Start difference. First operand 226 states and 463 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:37,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-05 05:15:37,867 INFO L93 Difference]: Finished difference Result 322 states and 647 transitions.
[2021-06-05 05:15:37,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-06-05 05:15:37,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 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 25
[2021-06-05 05:15:37,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-05 05:15:37,868 INFO L225 Difference]: With dead ends: 322
[2021-06-05 05:15:37,868 INFO L226 Difference]: Without dead ends: 286
[2021-06-05 05:15:37,869 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 35.7ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2021-06-05 05:15:37,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states.
[2021-06-05 05:15:37,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 206.
[2021-06-05 05:15:37,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 2.0585365853658537) internal successors, (422), 205 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:37,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 422 transitions.
[2021-06-05 05:15:37,876 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 422 transitions. Word has length 25
[2021-06-05 05:15:37,877 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-05 05:15:37,877 INFO L482 AbstractCegarLoop]: Abstraction has 206 states and 422 transitions.
[2021-06-05 05:15:37,878 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:37,878 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 422 transitions.
[2021-06-05 05:15:37,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2021-06-05 05:15:37,878 INFO L513 BasicCegarLoop]: Found error trace
[2021-06-05 05:15:37,878 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-05 05:15:37,878 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-06-05 05:15:37,879 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-05 05:15:37,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-05 05:15:37,879 INFO L82 PathProgramCache]: Analyzing trace with hash -682208179, now seen corresponding path program 8 times
[2021-06-05 05:15:37,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-05 05:15:37,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394960498]
[2021-06-05 05:15:37,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-05 05:15:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-05 05:15:37,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-05 05:15:37,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-05 05:15:37,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394960498]
[2021-06-05 05:15:37,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394960498] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-05 05:15:37,923 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-05 05:15:37,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-06-05 05:15:37,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948941850]
[2021-06-05 05:15:37,924 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states
[2021-06-05 05:15:37,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-05 05:15:37,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-06-05 05:15:37,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-06-05 05:15:37,926 INFO L87 Difference]: Start difference. First operand 206 states and 422 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:37,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-05 05:15:37,963 INFO L93 Difference]: Finished difference Result 93 states and 166 transitions.
[2021-06-05 05:15:37,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-06-05 05:15:37,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25
[2021-06-05 05:15:37,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-05 05:15:37,964 INFO L225 Difference]: With dead ends: 93
[2021-06-05 05:15:37,964 INFO L226 Difference]: Without dead ends: 69
[2021-06-05 05:15:37,964 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-06-05 05:15:37,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states.
[2021-06-05 05:15:37,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69.
[2021-06-05 05:15:37,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.8088235294117647) internal successors, (123), 68 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:37,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 123 transitions.
[2021-06-05 05:15:37,966 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 123 transitions. Word has length 25
[2021-06-05 05:15:37,967 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-05 05:15:37,967 INFO L482 AbstractCegarLoop]: Abstraction has 69 states and 123 transitions.
[2021-06-05 05:15:37,967 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:37,967 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 123 transitions.
[2021-06-05 05:15:37,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2021-06-05 05:15:37,967 INFO L513 BasicCegarLoop]: Found error trace
[2021-06-05 05:15:37,967 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-05 05:15:37,967 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2021-06-05 05:15:37,967 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-05 05:15:37,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-05 05:15:37,968 INFO L82 PathProgramCache]: Analyzing trace with hash -554651247, now seen corresponding path program 9 times
[2021-06-05 05:15:37,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-05 05:15:37,968 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052647414]
[2021-06-05 05:15:37,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-05 05:15:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-05 05:15:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-05 05:15:38,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-05 05:15:38,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052647414]
[2021-06-05 05:15:38,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052647414] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-05 05:15:38,028 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-05 05:15:38,028 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-06-05 05:15:38,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512709782]
[2021-06-05 05:15:38,028 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-06-05 05:15:38,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-05 05:15:38,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-06-05 05:15:38,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-06-05 05:15:38,029 INFO L87 Difference]: Start difference. First operand 69 states and 123 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:38,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-05 05:15:38,074 INFO L93 Difference]: Finished difference Result 111 states and 204 transitions.
[2021-06-05 05:15:38,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-06-05 05:15:38,075 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 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 25
[2021-06-05 05:15:38,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-05 05:15:38,076 INFO L225 Difference]: With dead ends: 111
[2021-06-05 05:15:38,076 INFO L226 Difference]: Without dead ends: 97
[2021-06-05 05:15:38,076 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.9ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2021-06-05 05:15:38,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states.
[2021-06-05 05:15:38,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 67.
[2021-06-05 05:15:38,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.803030303030303) internal successors, (119), 66 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:38,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 119 transitions.
[2021-06-05 05:15:38,078 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 119 transitions. Word has length 25
[2021-06-05 05:15:38,079 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-05 05:15:38,079 INFO L482 AbstractCegarLoop]: Abstraction has 67 states and 119 transitions.
[2021-06-05 05:15:38,079 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:38,079 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 119 transitions.
[2021-06-05 05:15:38,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2021-06-05 05:15:38,079 INFO L513 BasicCegarLoop]: Found error trace
[2021-06-05 05:15:38,079 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-05 05:15:38,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2021-06-05 05:15:38,081 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-05 05:15:38,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-05 05:15:38,082 INFO L82 PathProgramCache]: Analyzing trace with hash 130113345, now seen corresponding path program 10 times
[2021-06-05 05:15:38,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-05 05:15:38,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979917927]
[2021-06-05 05:15:38,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-05 05:15:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-05 05:15:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-05 05:15:38,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-05 05:15:38,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979917927]
[2021-06-05 05:15:38,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979917927] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-05 05:15:38,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-05 05:15:38,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-06-05 05:15:38,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867456409]
[2021-06-05 05:15:38,147 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states
[2021-06-05 05:15:38,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-05 05:15:38,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-06-05 05:15:38,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2021-06-05 05:15:38,148 INFO L87 Difference]: Start difference. First operand 67 states and 119 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:38,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-05 05:15:38,239 INFO L93 Difference]: Finished difference Result 32 states and 46 transitions.
[2021-06-05 05:15:38,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-06-05 05:15:38,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 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 25
[2021-06-05 05:15:38,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-05 05:15:38,240 INFO L225 Difference]: With dead ends: 32
[2021-06-05 05:15:38,240 INFO L226 Difference]: Without dead ends: 0
[2021-06-05 05:15:38,240 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 72.4ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2021-06-05 05:15:38,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-06-05 05:15:38,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-06-05 05:15:38,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:38,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-06-05 05:15:38,241 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25
[2021-06-05 05:15:38,241 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-05 05:15:38,241 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-06-05 05:15:38,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-05 05:15:38,241 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-06-05 05:15:38,241 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-06-05 05:15:38,241 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2021-06-05 05:15:38,242 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2021-06-05 05:15:38,244 INFO L202 PluginConnector]: Adding new model ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 05:15:38 BasicIcfg
[2021-06-05 05:15:38,244 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-06-05 05:15:38,245 INFO L168 Benchmark]: Toolchain (without parser) took 2378.41 ms. Allocated memory is still 337.6 MB. Free memory was 317.1 MB in the beginning and 223.1 MB in the end (delta: 94.0 MB). Peak memory consumption was 95.0 MB. Max. memory is 16.0 GB.
[2021-06-05 05:15:38,245 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 337.6 MB. Free memory is still 318.1 MB. There was no memory consumed. Max. memory is 16.0 GB.
[2021-06-05 05:15:38,246 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.15 ms. Allocated memory is still 337.6 MB. Free memory was 317.0 MB in the beginning and 315.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB.
[2021-06-05 05:15:38,246 INFO L168 Benchmark]: Boogie Preprocessor took 16.25 ms. Allocated memory is still 337.6 MB. Free memory was 315.5 MB in the beginning and 314.7 MB in the end (delta: 766.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB.
[2021-06-05 05:15:38,246 INFO L168 Benchmark]: RCFGBuilder took 338.35 ms. Allocated memory is still 337.6 MB. Free memory was 314.6 MB in the beginning and 302.1 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB.
[2021-06-05 05:15:38,246 INFO L168 Benchmark]: TraceAbstraction took 1991.46 ms. Allocated memory is still 337.6 MB. Free memory was 301.6 MB in the beginning and 223.1 MB in the end (delta: 78.5 MB). Peak memory consumption was 78.2 MB. Max. memory is 16.0 GB.
[2021-06-05 05:15:38,247 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 0.16 ms. Allocated memory is still 337.6 MB. Free memory is still 318.1 MB. There was no memory consumed. Max. memory is 16.0 GB.
* Boogie Procedure Inliner took 27.15 ms. Allocated memory is still 337.6 MB. Free memory was 317.0 MB in the beginning and 315.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB.
* Boogie Preprocessor took 16.25 ms. Allocated memory is still 337.6 MB. Free memory was 315.5 MB in the beginning and 314.7 MB in the end (delta: 766.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB.
* RCFGBuilder took 338.35 ms. Allocated memory is still 337.6 MB. Free memory was 314.6 MB in the beginning and 302.1 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB.
* TraceAbstraction took 1991.46 ms. Allocated memory is still 337.6 MB. Free memory was 301.6 MB in the beginning and 223.1 MB in the end (delta: 78.5 MB). Peak memory consumption was 78.2 MB. Max. memory is 16.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 65]: assertion always holds
For all program executions holds that assertion always holds at this location
- StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances
CFG has 7 procedures, 53 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1899.0ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 32.8ms, AutomataDifference: 808.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 61.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 272 SDtfs, 287 SDslu, 757 SDs, 0 SdLazy, 713 SolverSat, 107 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 393.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 348.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=415occurred in iteration=1, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 121.5ms AutomataMinimizationTime, 10 MinimizatonAttempts, 717 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 40.3ms SsaConstructionTime, 115.9ms SatisfiabilityAnalysisTime, 554.8ms InterpolantComputationTime, 250 NumberOfCodeBlocks, 250 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 240 ConstructedInterpolants, 0 QuantifiedInterpolants, 638 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...