/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/bench/exp3x3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 20:40:53,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 20:40:53,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 20:40:53,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 20:40:54,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 20:40:54,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 20:40:54,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 20:40:54,017 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-05-21 20:40:54,049 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 20:40:54,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 20:40:54,050 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 20:40:54,050 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 20:40:54,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 20:40:54,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 20:40:54,053 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 20:40:54,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 20:40:54,053 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 20:40:54,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 20:40:54,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 20:40:54,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 20:40:54,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 20:40:54,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 20:40:54,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 20:40:54,054 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 20:40:54,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 20:40:54,055 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 20:40:54,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 20:40:54,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 20:40:54,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 20:40:54,055 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 20:40:54,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 20:40:54,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 20:40:54,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 20:40:54,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 20:40:54,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 20:40:54,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 20:40:54,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 20:40:54,056 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 20:40:54,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 20:40:54,057 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 20:40:54,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 20:40:54,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 20:40:54,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 20:40:54,369 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-05-21 20:40:54,370 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-05-21 20:40:54,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp3x3.wvr.bpl [2021-05-21 20:40:54,371 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp3x3.wvr.bpl' [2021-05-21 20:40:54,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 20:40:54,403 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-21 20:40:54,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 20:40:54,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 20:40:54,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 20:40:54,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:40:54" (1/1) ... [2021-05-21 20:40:54,420 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:40:54" (1/1) ... [2021-05-21 20:40:54,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 20:40:54,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 20:40:54,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 20:40:54,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 20:40:54,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:40:54" (1/1) ... [2021-05-21 20:40:54,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:40:54" (1/1) ... [2021-05-21 20:40:54,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:40:54" (1/1) ... [2021-05-21 20:40:54,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:40:54" (1/1) ... [2021-05-21 20:40:54,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:40:54" (1/1) ... [2021-05-21 20:40:54,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:40:54" (1/1) ... [2021-05-21 20:40:54,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:40:54" (1/1) ... [2021-05-21 20:40:54,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 20:40:54,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 20:40:54,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 20:40:54,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 20:40:54,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:40:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 20:40:54,530 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-05-21 20:40:54,531 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-05-21 20:40:54,531 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-05-21 20:40:54,531 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-05-21 20:40:54,531 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-05-21 20:40:54,531 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-05-21 20:40:54,531 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-05-21 20:40:54,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 20:40:54,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 20:40:54,532 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-05-21 20:40:54,532 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-05-21 20:40:54,532 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-05-21 20:40:54,532 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-05-21 20:40:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-05-21 20:40:54,533 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-05-21 20:40:54,533 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-05-21 20:40:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-05-21 20:40:54,533 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-05-21 20:40:54,534 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-05-21 20:40:54,535 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-05-21 20:40:54,535 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-05-21 20:40:54,536 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 20:40:54,691 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 20:40:54,691 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-21 20:40:54,692 INFO L202 PluginConnector]: Adding new model exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 08:40:54 BoogieIcfgContainer [2021-05-21 20:40:54,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 20:40:54,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 20:40:54,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 20:40:54,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 20:40:54,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:40:54" (1/2) ... [2021-05-21 20:40:54,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fbf5f9d and model type exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 08:40:54, skipping insertion in model container [2021-05-21 20:40:54,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 08:40:54" (2/2) ... [2021-05-21 20:40:54,698 INFO L111 eAbstractionObserver]: Analyzing ICFG exp3x3.wvr.bpl [2021-05-21 20:40:54,702 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 20:40:54,703 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 20:40:54,703 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 20:40:54,703 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 20:40:54,771 INFO L149 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-05-21 20:40:54,788 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-05-21 20:40:54,804 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 20:40:54,804 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 20:40:54,805 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 20:40:54,805 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 20:40:54,805 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 20:40:54,805 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 20:40:54,805 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 20:40:54,805 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 20:40:54,813 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 60 places, 47 transitions, 142 flow [2021-05-21 20:40:55,414 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 6831 states, 6829 states have (on average 5.865426856055059) internal successors, (40055), 6830 states have internal predecessors, (40055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:40:55,454 INFO L276 IsEmpty]: Start isEmpty. Operand has 6831 states, 6829 states have (on average 5.865426856055059) internal successors, (40055), 6830 states have internal predecessors, (40055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:40:55,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-21 20:40:55,524 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:40:55,525 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:40:55,525 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:40:55,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:40:55,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1044529094, now seen corresponding path program 1 times [2021-05-21 20:40:55,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:40:55,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808393473] [2021-05-21 20:40:55,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:40:55,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:40:55,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:40:55,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:40:55,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808393473] [2021-05-21 20:40:55,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808393473] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:40:55,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:40:55,709 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-21 20:40:55,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030934290] [2021-05-21 20:40:55,713 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 20:40:55,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:40:55,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 20:40:55,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:40:55,751 INFO L87 Difference]: Start difference. First operand has 6831 states, 6829 states have (on average 5.865426856055059) internal successors, (40055), 6830 states have internal predecessors, (40055), 0 states have call successors, (0), 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 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:40:56,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:40:56,347 INFO L93 Difference]: Finished difference Result 13654 states and 80102 transitions. [2021-05-21 20:40:56,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 20:40:56,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-05-21 20:40:56,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:40:56,625 INFO L225 Difference]: With dead ends: 13654 [2021-05-21 20:40:56,626 INFO L226 Difference]: Without dead ends: 13527 [2021-05-21 20:40:56,628 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:40:56,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13527 states. [2021-05-21 20:40:57,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13527 to 8158. [2021-05-21 20:40:57,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8158 states, 8157 states have (on average 5.851538555841609) internal successors, (47731), 8157 states have internal predecessors, (47731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:40:57,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8158 states to 8158 states and 47731 transitions. [2021-05-21 20:40:57,507 INFO L78 Accepts]: Start accepts. Automaton has 8158 states and 47731 transitions. Word has length 27 [2021-05-21 20:40:57,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:40:57,508 INFO L482 AbstractCegarLoop]: Abstraction has 8158 states and 47731 transitions. [2021-05-21 20:40:57,509 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:40:57,509 INFO L276 IsEmpty]: Start isEmpty. Operand 8158 states and 47731 transitions. [2021-05-21 20:40:57,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-21 20:40:57,546 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:40:57,546 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:40:57,547 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 20:40:57,547 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:40:57,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:40:57,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1567455164, now seen corresponding path program 1 times [2021-05-21 20:40:57,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:40:57,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145670960] [2021-05-21 20:40:57,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:40:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:40:57,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:40:57,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:40:57,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145670960] [2021-05-21 20:40:57,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145670960] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:40:57,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993097871] [2021-05-21 20:40:57,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:40:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:40:57,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-21 20:40:57,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:40:57,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:40:57,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993097871] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:40:57,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:40:57,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2021-05-21 20:40:57,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690907422] [2021-05-21 20:40:57,842 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 20:40:57,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:40:57,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 20:40:57,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-05-21 20:40:57,843 INFO L87 Difference]: Start difference. First operand 8158 states and 47731 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:40:58,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:40:58,432 INFO L93 Difference]: Finished difference Result 21114 states and 121111 transitions. [2021-05-21 20:40:58,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-21 20:40:58,433 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 29 [2021-05-21 20:40:58,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:40:58,663 INFO L225 Difference]: With dead ends: 21114 [2021-05-21 20:40:58,665 INFO L226 Difference]: Without dead ends: 21114 [2021-05-21 20:40:58,666 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 40.7ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:40:58,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21114 states. [2021-05-21 20:40:59,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21114 to 10411. [2021-05-21 20:40:59,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10411 states, 10410 states have (on average 5.94447646493756) internal successors, (61882), 10410 states have internal predecessors, (61882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:40:59,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10411 states to 10411 states and 61882 transitions. [2021-05-21 20:40:59,510 INFO L78 Accepts]: Start accepts. Automaton has 10411 states and 61882 transitions. Word has length 29 [2021-05-21 20:40:59,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:40:59,511 INFO L482 AbstractCegarLoop]: Abstraction has 10411 states and 61882 transitions. [2021-05-21 20:40:59,511 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:40:59,511 INFO L276 IsEmpty]: Start isEmpty. Operand 10411 states and 61882 transitions. [2021-05-21 20:40:59,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-21 20:40:59,573 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:40:59,573 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:40:59,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-21 20:40:59,789 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:40:59,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:40:59,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1130933432, now seen corresponding path program 1 times [2021-05-21 20:40:59,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:40:59,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332109172] [2021-05-21 20:40:59,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:40:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:40:59,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:40:59,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:40:59,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332109172] [2021-05-21 20:40:59,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332109172] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:40:59,838 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:40:59,838 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:40:59,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630603885] [2021-05-21 20:40:59,839 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-21 20:40:59,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:40:59,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-21 20:40:59,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-05-21 20:40:59,840 INFO L87 Difference]: Start difference. First operand 10411 states and 61882 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:00,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:41:00,131 INFO L93 Difference]: Finished difference Result 14973 states and 85568 transitions. [2021-05-21 20:41:00,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-21 20:41:00,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-05-21 20:41:00,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:41:00,217 INFO L225 Difference]: With dead ends: 14973 [2021-05-21 20:41:00,217 INFO L226 Difference]: Without dead ends: 14893 [2021-05-21 20:41:00,217 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-05-21 20:41:00,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14893 states. [2021-05-21 20:41:00,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14893 to 11995. [2021-05-21 20:41:00,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11995 states, 11994 states have (on average 5.837335334333834) internal successors, (70013), 11994 states have internal predecessors, (70013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:00,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11995 states to 11995 states and 70013 transitions. [2021-05-21 20:41:00,958 INFO L78 Accepts]: Start accepts. Automaton has 11995 states and 70013 transitions. Word has length 29 [2021-05-21 20:41:00,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:41:00,958 INFO L482 AbstractCegarLoop]: Abstraction has 11995 states and 70013 transitions. [2021-05-21 20:41:00,958 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:00,958 INFO L276 IsEmpty]: Start isEmpty. Operand 11995 states and 70013 transitions. [2021-05-21 20:41:00,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-21 20:41:00,999 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:41:00,999 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:41:01,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 20:41:01,000 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:41:01,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:41:01,000 INFO L82 PathProgramCache]: Analyzing trace with hash 133583944, now seen corresponding path program 1 times [2021-05-21 20:41:01,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:41:01,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669813467] [2021-05-21 20:41:01,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:41:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:41:01,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:41:01,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:41:01,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669813467] [2021-05-21 20:41:01,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669813467] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:41:01,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235161338] [2021-05-21 20:41:01,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:41:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:41:01,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-21 20:41:01,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:41:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:41:01,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235161338] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:41:01,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:41:01,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-05-21 20:41:01,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462217768] [2021-05-21 20:41:01,214 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-21 20:41:01,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:41:01,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-21 20:41:01,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-21 20:41:01,215 INFO L87 Difference]: Start difference. First operand 11995 states and 70013 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:01,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:41:01,669 INFO L93 Difference]: Finished difference Result 30637 states and 176852 transitions. [2021-05-21 20:41:01,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-21 20:41:01,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-05-21 20:41:01,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:41:01,822 INFO L225 Difference]: With dead ends: 30637 [2021-05-21 20:41:01,822 INFO L226 Difference]: Without dead ends: 30637 [2021-05-21 20:41:01,822 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-21 20:41:01,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30637 states. [2021-05-21 20:41:02,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30637 to 15205. [2021-05-21 20:41:02,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15205 states, 15204 states have (on average 5.956393054459353) internal successors, (90561), 15204 states have internal predecessors, (90561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:02,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15205 states to 15205 states and 90561 transitions. [2021-05-21 20:41:02,804 INFO L78 Accepts]: Start accepts. Automaton has 15205 states and 90561 transitions. Word has length 29 [2021-05-21 20:41:02,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:41:02,804 INFO L482 AbstractCegarLoop]: Abstraction has 15205 states and 90561 transitions. [2021-05-21 20:41:02,804 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:02,804 INFO L276 IsEmpty]: Start isEmpty. Operand 15205 states and 90561 transitions. [2021-05-21 20:41:03,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-21 20:41:03,143 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:41:03,143 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:41:03,367 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:41:03,367 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:41:03,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:41:03,368 INFO L82 PathProgramCache]: Analyzing trace with hash -8467834, now seen corresponding path program 1 times [2021-05-21 20:41:03,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:41:03,368 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58874404] [2021-05-21 20:41:03,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:41:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:41:03,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:41:03,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:41:03,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58874404] [2021-05-21 20:41:03,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58874404] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:41:03,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100479845] [2021-05-21 20:41:03,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:41:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:41:03,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-21 20:41:03,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:41:03,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:41:03,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100479845] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:41:03,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:41:03,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-05-21 20:41:03,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459555733] [2021-05-21 20:41:03,498 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-21 20:41:03,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:41:03,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-21 20:41:03,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-21 20:41:03,499 INFO L87 Difference]: Start difference. First operand 15205 states and 90561 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:03,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:41:03,833 INFO L93 Difference]: Finished difference Result 36877 states and 218066 transitions. [2021-05-21 20:41:03,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-21 20:41:03,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-05-21 20:41:03,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:41:04,271 INFO L225 Difference]: With dead ends: 36877 [2021-05-21 20:41:04,271 INFO L226 Difference]: Without dead ends: 36877 [2021-05-21 20:41:04,272 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-21 20:41:04,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36877 states. [2021-05-21 20:41:05,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36877 to 20146. [2021-05-21 20:41:05,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20146 states, 20145 states have (on average 6.068304790270538) internal successors, (122246), 20145 states have internal predecessors, (122246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:05,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20146 states to 20146 states and 122246 transitions. [2021-05-21 20:41:05,578 INFO L78 Accepts]: Start accepts. Automaton has 20146 states and 122246 transitions. Word has length 29 [2021-05-21 20:41:05,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:41:05,579 INFO L482 AbstractCegarLoop]: Abstraction has 20146 states and 122246 transitions. [2021-05-21 20:41:05,579 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:05,579 INFO L276 IsEmpty]: Start isEmpty. Operand 20146 states and 122246 transitions. [2021-05-21 20:41:05,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-21 20:41:05,689 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:41:05,689 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:41:05,890 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:41:05,890 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:41:05,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:41:05,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1681375674, now seen corresponding path program 1 times [2021-05-21 20:41:05,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:41:05,891 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335731092] [2021-05-21 20:41:05,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:41:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:41:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:41:05,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:41:05,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335731092] [2021-05-21 20:41:05,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335731092] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:41:05,925 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:41:05,925 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:41:05,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377295882] [2021-05-21 20:41:05,925 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-21 20:41:05,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:41:05,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-21 20:41:05,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-21 20:41:05,926 INFO L87 Difference]: Start difference. First operand 20146 states and 122246 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:06,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:41:06,221 INFO L93 Difference]: Finished difference Result 31288 states and 185448 transitions. [2021-05-21 20:41:06,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-21 20:41:06,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-05-21 20:41:06,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:41:06,361 INFO L225 Difference]: With dead ends: 31288 [2021-05-21 20:41:06,362 INFO L226 Difference]: Without dead ends: 31121 [2021-05-21 20:41:06,362 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-21 20:41:06,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31121 states. [2021-05-21 20:41:07,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31121 to 21451. [2021-05-21 20:41:07,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21451 states, 21450 states have (on average 6.020652680652681) internal successors, (129143), 21450 states have internal predecessors, (129143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:07,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21451 states to 21451 states and 129143 transitions. [2021-05-21 20:41:07,380 INFO L78 Accepts]: Start accepts. Automaton has 21451 states and 129143 transitions. Word has length 29 [2021-05-21 20:41:07,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:41:07,381 INFO L482 AbstractCegarLoop]: Abstraction has 21451 states and 129143 transitions. [2021-05-21 20:41:07,381 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:07,381 INFO L276 IsEmpty]: Start isEmpty. Operand 21451 states and 129143 transitions. [2021-05-21 20:41:07,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-21 20:41:07,438 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:41:07,438 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:41:07,438 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-21 20:41:07,438 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:41:07,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:41:07,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1659787256, now seen corresponding path program 1 times [2021-05-21 20:41:07,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:41:07,439 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697912660] [2021-05-21 20:41:07,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:41:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:41:07,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:41:07,465 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:41:07,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697912660] [2021-05-21 20:41:07,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697912660] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:41:07,465 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:41:07,465 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:41:07,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797353111] [2021-05-21 20:41:07,466 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-21 20:41:07,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:41:07,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-21 20:41:07,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-21 20:41:07,467 INFO L87 Difference]: Start difference. First operand 21451 states and 129143 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:08,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:41:08,121 INFO L93 Difference]: Finished difference Result 36020 states and 210532 transitions. [2021-05-21 20:41:08,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-21 20:41:08,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-05-21 20:41:08,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:41:08,328 INFO L225 Difference]: With dead ends: 36020 [2021-05-21 20:41:08,328 INFO L226 Difference]: Without dead ends: 35844 [2021-05-21 20:41:08,329 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-21 20:41:08,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35844 states. [2021-05-21 20:41:09,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35844 to 23309. [2021-05-21 20:41:09,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23309 states, 23308 states have (on average 5.963188604770894) internal successors, (138990), 23308 states have internal predecessors, (138990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:09,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23309 states to 23309 states and 138990 transitions. [2021-05-21 20:41:09,437 INFO L78 Accepts]: Start accepts. Automaton has 23309 states and 138990 transitions. Word has length 29 [2021-05-21 20:41:09,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:41:09,438 INFO L482 AbstractCegarLoop]: Abstraction has 23309 states and 138990 transitions. [2021-05-21 20:41:09,438 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:09,438 INFO L276 IsEmpty]: Start isEmpty. Operand 23309 states and 138990 transitions. [2021-05-21 20:41:09,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-21 20:41:09,505 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:41:09,505 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:41:09,505 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-21 20:41:09,506 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:41:09,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:41:09,506 INFO L82 PathProgramCache]: Analyzing trace with hash 25043654, now seen corresponding path program 2 times [2021-05-21 20:41:09,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:41:09,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876022725] [2021-05-21 20:41:09,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:41:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:41:09,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:41:09,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:41:09,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876022725] [2021-05-21 20:41:09,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876022725] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:41:09,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:41:09,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:41:09,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734402388] [2021-05-21 20:41:09,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-21 20:41:09,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:41:09,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-21 20:41:09,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-21 20:41:09,543 INFO L87 Difference]: Start difference. First operand 23309 states and 138990 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:09,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:41:09,860 INFO L93 Difference]: Finished difference Result 35264 states and 207669 transitions. [2021-05-21 20:41:09,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-21 20:41:09,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-05-21 20:41:09,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:41:10,018 INFO L225 Difference]: With dead ends: 35264 [2021-05-21 20:41:10,019 INFO L226 Difference]: Without dead ends: 35264 [2021-05-21 20:41:10,019 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-21 20:41:10,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35264 states. [2021-05-21 20:41:11,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35264 to 26215. [2021-05-21 20:41:11,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26215 states, 26214 states have (on average 5.978828107118334) internal successors, (156729), 26214 states have internal predecessors, (156729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:11,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26215 states to 26215 states and 156729 transitions. [2021-05-21 20:41:11,210 INFO L78 Accepts]: Start accepts. Automaton has 26215 states and 156729 transitions. Word has length 29 [2021-05-21 20:41:11,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:41:11,210 INFO L482 AbstractCegarLoop]: Abstraction has 26215 states and 156729 transitions. [2021-05-21 20:41:11,210 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:11,210 INFO L276 IsEmpty]: Start isEmpty. Operand 26215 states and 156729 transitions. [2021-05-21 20:41:11,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-21 20:41:11,282 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:41:11,283 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:41:11,283 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-21 20:41:11,283 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:41:11,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:41:11,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1371840000, now seen corresponding path program 2 times [2021-05-21 20:41:11,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:41:11,284 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115970031] [2021-05-21 20:41:11,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:41:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:41:11,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:41:11,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:41:11,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115970031] [2021-05-21 20:41:11,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115970031] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:41:11,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:41:11,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:41:11,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552867590] [2021-05-21 20:41:11,313 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-21 20:41:11,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:41:11,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-21 20:41:11,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-21 20:41:11,314 INFO L87 Difference]: Start difference. First operand 26215 states and 156729 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:11,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:41:11,623 INFO L93 Difference]: Finished difference Result 35265 states and 205937 transitions. [2021-05-21 20:41:11,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-21 20:41:11,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-05-21 20:41:11,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:41:12,312 INFO L225 Difference]: With dead ends: 35265 [2021-05-21 20:41:12,312 INFO L226 Difference]: Without dead ends: 35115 [2021-05-21 20:41:12,312 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-21 20:41:12,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35115 states. [2021-05-21 20:41:12,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35115 to 27707. [2021-05-21 20:41:13,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27707 states, 27706 states have (on average 5.942972641305133) internal successors, (164656), 27706 states have internal predecessors, (164656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:13,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27707 states to 27707 states and 164656 transitions. [2021-05-21 20:41:13,601 INFO L78 Accepts]: Start accepts. Automaton has 27707 states and 164656 transitions. Word has length 29 [2021-05-21 20:41:13,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:41:13,601 INFO L482 AbstractCegarLoop]: Abstraction has 27707 states and 164656 transitions. [2021-05-21 20:41:13,602 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:13,602 INFO L276 IsEmpty]: Start isEmpty. Operand 27707 states and 164656 transitions. [2021-05-21 20:41:13,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-21 20:41:13,718 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:41:13,719 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:41:13,719 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-21 20:41:13,719 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:41:13,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:41:13,719 INFO L82 PathProgramCache]: Analyzing trace with hash -490301020, now seen corresponding path program 2 times [2021-05-21 20:41:13,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:41:13,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211361249] [2021-05-21 20:41:13,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:41:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:41:13,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:41:13,753 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:41:13,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211361249] [2021-05-21 20:41:13,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211361249] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:41:13,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:41:13,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:41:13,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819873672] [2021-05-21 20:41:13,753 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-21 20:41:13,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:41:13,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-21 20:41:13,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-21 20:41:13,754 INFO L87 Difference]: Start difference. First operand 27707 states and 164656 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:14,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:41:14,114 INFO L93 Difference]: Finished difference Result 45133 states and 263334 transitions. [2021-05-21 20:41:14,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-21 20:41:14,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-05-21 20:41:14,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:41:14,300 INFO L225 Difference]: With dead ends: 45133 [2021-05-21 20:41:14,300 INFO L226 Difference]: Without dead ends: 45133 [2021-05-21 20:41:14,300 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-21 20:41:14,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45133 states. [2021-05-21 20:41:15,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45133 to 32206. [2021-05-21 20:41:15,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32206 states, 32205 states have (on average 5.952895513119081) internal successors, (191713), 32205 states have internal predecessors, (191713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:15,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32206 states to 32206 states and 191713 transitions. [2021-05-21 20:41:15,755 INFO L78 Accepts]: Start accepts. Automaton has 32206 states and 191713 transitions. Word has length 29 [2021-05-21 20:41:15,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:41:15,755 INFO L482 AbstractCegarLoop]: Abstraction has 32206 states and 191713 transitions. [2021-05-21 20:41:15,755 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:15,755 INFO L276 IsEmpty]: Start isEmpty. Operand 32206 states and 191713 transitions. [2021-05-21 20:41:15,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-21 20:41:15,844 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:41:15,844 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:41:15,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-21 20:41:15,845 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:41:15,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:41:15,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1923189408, now seen corresponding path program 2 times [2021-05-21 20:41:15,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:41:15,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493900352] [2021-05-21 20:41:15,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:41:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:41:15,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:41:15,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:41:15,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493900352] [2021-05-21 20:41:15,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493900352] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:41:15,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:41:15,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:41:15,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762008093] [2021-05-21 20:41:15,887 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-21 20:41:15,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:41:15,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-21 20:41:15,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-21 20:41:15,888 INFO L87 Difference]: Start difference. First operand 32206 states and 191713 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:16,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:41:16,747 INFO L93 Difference]: Finished difference Result 45104 states and 260644 transitions. [2021-05-21 20:41:16,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-21 20:41:16,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-05-21 20:41:16,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:41:16,921 INFO L225 Difference]: With dead ends: 45104 [2021-05-21 20:41:16,921 INFO L226 Difference]: Without dead ends: 44872 [2021-05-21 20:41:16,921 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-21 20:41:17,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44872 states. [2021-05-21 20:41:18,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44872 to 34465. [2021-05-21 20:41:18,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34465 states, 34464 states have (on average 5.9103122098421546) internal successors, (203693), 34464 states have internal predecessors, (203693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:18,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34465 states to 34465 states and 203693 transitions. [2021-05-21 20:41:18,400 INFO L78 Accepts]: Start accepts. Automaton has 34465 states and 203693 transitions. Word has length 29 [2021-05-21 20:41:18,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:41:18,400 INFO L482 AbstractCegarLoop]: Abstraction has 34465 states and 203693 transitions. [2021-05-21 20:41:18,400 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:18,401 INFO L276 IsEmpty]: Start isEmpty. Operand 34465 states and 203693 transitions. [2021-05-21 20:41:18,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-21 20:41:18,494 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:41:18,494 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:41:18,494 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-21 20:41:18,494 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:41:18,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:41:18,495 INFO L82 PathProgramCache]: Analyzing trace with hash 2077952268, now seen corresponding path program 2 times [2021-05-21 20:41:18,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:41:18,495 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438133409] [2021-05-21 20:41:18,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:41:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:41:18,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:41:18,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:41:18,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438133409] [2021-05-21 20:41:18,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438133409] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:41:18,520 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:41:18,521 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-21 20:41:18,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847232794] [2021-05-21 20:41:18,521 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-21 20:41:18,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:41:18,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-21 20:41:18,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-21 20:41:18,522 INFO L87 Difference]: Start difference. First operand 34465 states and 203693 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:18,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:41:18,884 INFO L93 Difference]: Finished difference Result 47735 states and 276681 transitions. [2021-05-21 20:41:18,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-21 20:41:18,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-05-21 20:41:18,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:41:19,065 INFO L225 Difference]: With dead ends: 47735 [2021-05-21 20:41:19,066 INFO L226 Difference]: Without dead ends: 47735 [2021-05-21 20:41:19,066 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-21 20:41:19,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47735 states. [2021-05-21 20:41:20,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47735 to 37708. [2021-05-21 20:41:20,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37708 states, 37707 states have (on average 5.9143660328321) internal successors, (223013), 37707 states have internal predecessors, (223013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:21,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37708 states to 37708 states and 223013 transitions. [2021-05-21 20:41:21,104 INFO L78 Accepts]: Start accepts. Automaton has 37708 states and 223013 transitions. Word has length 29 [2021-05-21 20:41:21,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:41:21,104 INFO L482 AbstractCegarLoop]: Abstraction has 37708 states and 223013 transitions. [2021-05-21 20:41:21,104 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:21,104 INFO L276 IsEmpty]: Start isEmpty. Operand 37708 states and 223013 transitions. [2021-05-21 20:41:21,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-21 20:41:21,221 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:41:21,221 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, 1, 1, 1, 1, 1, 1] [2021-05-21 20:41:21,221 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-21 20:41:21,221 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:41:21,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:41:21,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1308062790, now seen corresponding path program 1 times [2021-05-21 20:41:21,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:41:21,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316944979] [2021-05-21 20:41:21,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:41:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:41:21,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:41:21,313 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:41:21,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316944979] [2021-05-21 20:41:21,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316944979] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:41:21,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740462676] [2021-05-21 20:41:21,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:41:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:41:21,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-21 20:41:21,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:41:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:41:21,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740462676] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:41:21,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:41:21,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 4 [2021-05-21 20:41:21,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382533276] [2021-05-21 20:41:21,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-21 20:41:21,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:41:21,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-21 20:41:21,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-21 20:41:21,520 INFO L87 Difference]: Start difference. First operand 37708 states and 223013 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:22,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:41:22,007 INFO L93 Difference]: Finished difference Result 48610 states and 280421 transitions. [2021-05-21 20:41:22,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-21 20:41:22,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 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 31 [2021-05-21 20:41:22,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:41:22,232 INFO L225 Difference]: With dead ends: 48610 [2021-05-21 20:41:22,232 INFO L226 Difference]: Without dead ends: 48062 [2021-05-21 20:41:22,232 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.0ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-21 20:41:22,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48062 states. [2021-05-21 20:41:23,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48062 to 40315. [2021-05-21 20:41:23,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40315 states, 40314 states have (on average 5.896785235898199) internal successors, (237723), 40314 states have internal predecessors, (237723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:23,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40315 states to 40315 states and 237723 transitions. [2021-05-21 20:41:23,851 INFO L78 Accepts]: Start accepts. Automaton has 40315 states and 237723 transitions. Word has length 31 [2021-05-21 20:41:23,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:41:23,851 INFO L482 AbstractCegarLoop]: Abstraction has 40315 states and 237723 transitions. [2021-05-21 20:41:23,851 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:23,852 INFO L276 IsEmpty]: Start isEmpty. Operand 40315 states and 237723 transitions. [2021-05-21 20:41:23,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-21 20:41:23,962 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:41:23,963 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:41:24,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:41:24,163 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:41:24,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:41:24,164 INFO L82 PathProgramCache]: Analyzing trace with hash -280107528, now seen corresponding path program 2 times [2021-05-21 20:41:24,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:41:24,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142254536] [2021-05-21 20:41:24,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:41:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:41:24,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-21 20:41:24,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:41:24,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142254536] [2021-05-21 20:41:24,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142254536] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:41:24,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:41:24,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:41:24,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494332937] [2021-05-21 20:41:24,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-21 20:41:24,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:41:24,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-21 20:41:24,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-21 20:41:24,220 INFO L87 Difference]: Start difference. First operand 40315 states and 237723 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:25,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:41:25,219 INFO L93 Difference]: Finished difference Result 50404 states and 290958 transitions. [2021-05-21 20:41:25,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-21 20:41:25,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-05-21 20:41:25,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:41:25,459 INFO L225 Difference]: With dead ends: 50404 [2021-05-21 20:41:25,459 INFO L226 Difference]: Without dead ends: 49856 [2021-05-21 20:41:25,460 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.5ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-21 20:41:25,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49856 states. [2021-05-21 20:41:26,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49856 to 42372. [2021-05-21 20:41:26,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42372 states, 42371 states have (on average 5.882112765806802) internal successors, (249231), 42371 states have internal predecessors, (249231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:26,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42372 states to 42372 states and 249231 transitions. [2021-05-21 20:41:26,971 INFO L78 Accepts]: Start accepts. Automaton has 42372 states and 249231 transitions. Word has length 31 [2021-05-21 20:41:26,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:41:26,971 INFO L482 AbstractCegarLoop]: Abstraction has 42372 states and 249231 transitions. [2021-05-21 20:41:26,971 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:26,971 INFO L276 IsEmpty]: Start isEmpty. Operand 42372 states and 249231 transitions. [2021-05-21 20:41:27,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-21 20:41:27,076 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:41:27,077 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, 1, 1, 1, 1, 1, 1] [2021-05-21 20:41:27,077 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-21 20:41:27,077 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:41:27,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:41:27,077 INFO L82 PathProgramCache]: Analyzing trace with hash -904748022, now seen corresponding path program 1 times [2021-05-21 20:41:27,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:41:27,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626356733] [2021-05-21 20:41:27,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:41:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:41:27,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:41:27,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:41:27,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626356733] [2021-05-21 20:41:27,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626356733] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:41:27,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604248235] [2021-05-21 20:41:27,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:41:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:41:27,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-21 20:41:27,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:41:27,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:41:27,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604248235] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:41:27,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:41:27,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 4 [2021-05-21 20:41:27,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246223368] [2021-05-21 20:41:27,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-21 20:41:27,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:41:27,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-21 20:41:27,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-21 20:41:27,299 INFO L87 Difference]: Start difference. First operand 42372 states and 249231 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:28,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:41:28,360 INFO L93 Difference]: Finished difference Result 53113 states and 305911 transitions. [2021-05-21 20:41:28,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-21 20:41:28,360 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 31 [2021-05-21 20:41:28,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:41:28,601 INFO L225 Difference]: With dead ends: 53113 [2021-05-21 20:41:28,601 INFO L226 Difference]: Without dead ends: 52637 [2021-05-21 20:41:28,601 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.8ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-21 20:41:28,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52637 states. [2021-05-21 20:41:30,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52637 to 45439. [2021-05-21 20:41:30,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45439 states, 45438 states have (on average 5.865487037281571) internal successors, (266516), 45438 states have internal predecessors, (266516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:30,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45439 states to 45439 states and 266516 transitions. [2021-05-21 20:41:30,323 INFO L78 Accepts]: Start accepts. Automaton has 45439 states and 266516 transitions. Word has length 31 [2021-05-21 20:41:30,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:41:30,324 INFO L482 AbstractCegarLoop]: Abstraction has 45439 states and 266516 transitions. [2021-05-21 20:41:30,324 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:30,324 INFO L276 IsEmpty]: Start isEmpty. Operand 45439 states and 266516 transitions. [2021-05-21 20:41:30,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-21 20:41:30,441 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:41:30,442 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:41:30,642 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-21 20:41:30,642 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:41:30,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:41:30,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1844291576, now seen corresponding path program 2 times [2021-05-21 20:41:30,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:41:30,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863809693] [2021-05-21 20:41:30,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:41:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:41:30,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-21 20:41:30,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:41:30,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863809693] [2021-05-21 20:41:30,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863809693] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:41:30,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:41:30,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:41:30,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966212059] [2021-05-21 20:41:30,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-21 20:41:30,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:41:30,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-21 20:41:30,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-21 20:41:30,686 INFO L87 Difference]: Start difference. First operand 45439 states and 266516 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:31,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:41:31,746 INFO L93 Difference]: Finished difference Result 55542 states and 319905 transitions. [2021-05-21 20:41:31,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-21 20:41:31,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-05-21 20:41:31,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:41:32,009 INFO L225 Difference]: With dead ends: 55542 [2021-05-21 20:41:32,009 INFO L226 Difference]: Without dead ends: 55066 [2021-05-21 20:41:32,009 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.5ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-21 20:41:32,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55066 states. [2021-05-21 20:41:33,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55066 to 48103. [2021-05-21 20:41:33,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48103 states, 48102 states have (on average 5.849070724709991) internal successors, (281352), 48102 states have internal predecessors, (281352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:33,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48103 states to 48103 states and 281352 transitions. [2021-05-21 20:41:33,751 INFO L78 Accepts]: Start accepts. Automaton has 48103 states and 281352 transitions. Word has length 31 [2021-05-21 20:41:33,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:41:33,751 INFO L482 AbstractCegarLoop]: Abstraction has 48103 states and 281352 transitions. [2021-05-21 20:41:33,751 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:33,751 INFO L276 IsEmpty]: Start isEmpty. Operand 48103 states and 281352 transitions. [2021-05-21 20:41:33,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-21 20:41:33,880 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:41:33,880 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:41:33,880 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-21 20:41:33,880 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:41:33,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:41:33,881 INFO L82 PathProgramCache]: Analyzing trace with hash 858374, now seen corresponding path program 1 times [2021-05-21 20:41:33,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:41:33,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870555681] [2021-05-21 20:41:33,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:41:33,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:41:33,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:41:33,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:41:33,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870555681] [2021-05-21 20:41:33,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870555681] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:41:33,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239700771] [2021-05-21 20:41:33,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:41:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:41:33,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-21 20:41:33,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:41:34,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:41:34,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239700771] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:41:34,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:41:34,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 4 [2021-05-21 20:41:34,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418267689] [2021-05-21 20:41:34,084 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-21 20:41:34,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:41:34,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-21 20:41:34,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-21 20:41:34,084 INFO L87 Difference]: Start difference. First operand 48103 states and 281352 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:35,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:41:35,314 INFO L93 Difference]: Finished difference Result 56784 states and 326793 transitions. [2021-05-21 20:41:35,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-21 20:41:35,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 31 [2021-05-21 20:41:35,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:41:35,598 INFO L225 Difference]: With dead ends: 56784 [2021-05-21 20:41:35,599 INFO L226 Difference]: Without dead ends: 56381 [2021-05-21 20:41:35,599 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.0ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-21 20:41:35,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56381 states. [2021-05-21 20:41:37,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56381 to 50997. [2021-05-21 20:41:37,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50997 states, 50996 states have (on average 5.823652835516511) internal successors, (296983), 50996 states have internal predecessors, (296983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:37,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50997 states to 50997 states and 296983 transitions. [2021-05-21 20:41:37,480 INFO L78 Accepts]: Start accepts. Automaton has 50997 states and 296983 transitions. Word has length 31 [2021-05-21 20:41:37,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:41:37,481 INFO L482 AbstractCegarLoop]: Abstraction has 50997 states and 296983 transitions. [2021-05-21 20:41:37,481 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:37,481 INFO L276 IsEmpty]: Start isEmpty. Operand 50997 states and 296983 transitions. [2021-05-21 20:41:37,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-21 20:41:37,622 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:41:37,622 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:41:37,823 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-21 20:41:37,823 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:41:37,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:41:37,823 INFO L82 PathProgramCache]: Analyzing trace with hash 309047268, now seen corresponding path program 2 times [2021-05-21 20:41:37,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:41:37,824 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616993751] [2021-05-21 20:41:37,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:41:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:41:37,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-21 20:41:37,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:41:37,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616993751] [2021-05-21 20:41:37,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616993751] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:41:37,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:41:37,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:41:37,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013855738] [2021-05-21 20:41:37,876 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-21 20:41:37,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:41:37,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-21 20:41:37,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-21 20:41:37,877 INFO L87 Difference]: Start difference. First operand 50997 states and 296983 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:39,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:41:39,034 INFO L93 Difference]: Finished difference Result 58483 states and 336376 transitions. [2021-05-21 20:41:39,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-21 20:41:39,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-05-21 20:41:39,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:41:39,297 INFO L225 Difference]: With dead ends: 58483 [2021-05-21 20:41:39,297 INFO L226 Difference]: Without dead ends: 58080 [2021-05-21 20:41:39,297 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.2ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-21 20:41:39,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58080 states. [2021-05-21 20:41:40,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58080 to 53054. [2021-05-21 20:41:40,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53054 states, 53053 states have (on average 5.811565792697868) internal successors, (308321), 53053 states have internal predecessors, (308321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:41,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53054 states to 53054 states and 308321 transitions. [2021-05-21 20:41:41,137 INFO L78 Accepts]: Start accepts. Automaton has 53054 states and 308321 transitions. Word has length 31 [2021-05-21 20:41:41,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:41:41,137 INFO L482 AbstractCegarLoop]: Abstraction has 53054 states and 308321 transitions. [2021-05-21 20:41:41,137 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:41,137 INFO L276 IsEmpty]: Start isEmpty. Operand 53054 states and 308321 transitions. [2021-05-21 20:41:41,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:41:41,285 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:41:41,285 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:41:41,285 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-21 20:41:41,285 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:41:41,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:41:41,285 INFO L82 PathProgramCache]: Analyzing trace with hash 131288516, now seen corresponding path program 3 times [2021-05-21 20:41:41,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:41:41,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559270151] [2021-05-21 20:41:41,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:41:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:41:41,310 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:41:41,310 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:41:41,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559270151] [2021-05-21 20:41:41,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559270151] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:41:41,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127097448] [2021-05-21 20:41:41,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:41:41,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-21 20:41:41,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 20:41:41,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-21 20:41:41,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:41:41,483 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:41:41,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127097448] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:41:41,484 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:41:41,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-05-21 20:41:41,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015184787] [2021-05-21 20:41:41,486 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:41:41,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:41:41,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:41:41,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:41:41,488 INFO L87 Difference]: Start difference. First operand 53054 states and 308321 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:44,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:41:44,488 INFO L93 Difference]: Finished difference Result 166964 states and 963436 transitions. [2021-05-21 20:41:44,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-21 20:41:44,488 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 33 [2021-05-21 20:41:44,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:41:45,353 INFO L225 Difference]: With dead ends: 166964 [2021-05-21 20:41:45,353 INFO L226 Difference]: Without dead ends: 166964 [2021-05-21 20:41:45,354 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 136.9ms TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-05-21 20:41:45,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166964 states. [2021-05-21 20:41:48,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166964 to 71659. [2021-05-21 20:41:48,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71659 states, 71658 states have (on average 5.932080158530799) internal successors, (425081), 71658 states have internal predecessors, (425081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:49,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71659 states to 71659 states and 425081 transitions. [2021-05-21 20:41:49,762 INFO L78 Accepts]: Start accepts. Automaton has 71659 states and 425081 transitions. Word has length 33 [2021-05-21 20:41:49,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:41:49,762 INFO L482 AbstractCegarLoop]: Abstraction has 71659 states and 425081 transitions. [2021-05-21 20:41:49,762 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:49,762 INFO L276 IsEmpty]: Start isEmpty. Operand 71659 states and 425081 transitions. [2021-05-21 20:41:50,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:41:50,139 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:41:50,140 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:41:50,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:41:50,357 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:41:50,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:41:50,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1278122040, now seen corresponding path program 4 times [2021-05-21 20:41:50,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:41:50,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636131569] [2021-05-21 20:41:50,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:41:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:41:50,399 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:41:50,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:41:50,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636131569] [2021-05-21 20:41:50,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636131569] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:41:50,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000336699] [2021-05-21 20:41:50,400 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:41:50,440 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-21 20:41:50,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 20:41:50,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-21 20:41:50,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:41:50,506 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:41:50,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000336699] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:41:50,506 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:41:50,506 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-05-21 20:41:50,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401208869] [2021-05-21 20:41:50,506 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:41:50,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:41:50,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:41:50,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:41:50,507 INFO L87 Difference]: Start difference. First operand 71659 states and 425081 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:52,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:41:52,675 INFO L93 Difference]: Finished difference Result 151965 states and 880181 transitions. [2021-05-21 20:41:52,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-21 20:41:52,675 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 33 [2021-05-21 20:41:52,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:41:53,414 INFO L225 Difference]: With dead ends: 151965 [2021-05-21 20:41:53,414 INFO L226 Difference]: Without dead ends: 151069 [2021-05-21 20:41:53,415 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 94.6ms TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-05-21 20:41:53,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151069 states. [2021-05-21 20:41:57,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151069 to 98035. [2021-05-21 20:41:58,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98035 states, 98034 states have (on average 6.051471938307118) internal successors, (593250), 98034 states have internal predecessors, (593250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:58,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98035 states to 98035 states and 593250 transitions. [2021-05-21 20:41:58,590 INFO L78 Accepts]: Start accepts. Automaton has 98035 states and 593250 transitions. Word has length 33 [2021-05-21 20:41:58,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:41:58,590 INFO L482 AbstractCegarLoop]: Abstraction has 98035 states and 593250 transitions. [2021-05-21 20:41:58,590 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:41:58,590 INFO L276 IsEmpty]: Start isEmpty. Operand 98035 states and 593250 transitions. [2021-05-21 20:41:58,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:41:58,891 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:41:58,891 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:41:59,091 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:41:59,092 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:41:59,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:41:59,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1305965304, now seen corresponding path program 5 times [2021-05-21 20:41:59,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:41:59,092 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607810478] [2021-05-21 20:41:59,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:41:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:41:59,137 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:41:59,137 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:41:59,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607810478] [2021-05-21 20:41:59,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607810478] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:41:59,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911568795] [2021-05-21 20:41:59,137 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:41:59,185 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-05-21 20:41:59,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 20:41:59,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-21 20:41:59,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:41:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:41:59,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911568795] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:41:59,264 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:41:59,264 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-05-21 20:41:59,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589448438] [2021-05-21 20:41:59,265 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:41:59,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:41:59,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:41:59,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:41:59,266 INFO L87 Difference]: Start difference. First operand 98035 states and 593250 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:42:02,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:42:02,050 INFO L93 Difference]: Finished difference Result 145413 states and 850897 transitions. [2021-05-21 20:42:02,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 20:42:02,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 33 [2021-05-21 20:42:02,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:42:03,157 INFO L225 Difference]: With dead ends: 145413 [2021-05-21 20:42:03,157 INFO L226 Difference]: Without dead ends: 145413 [2021-05-21 20:42:03,157 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 89.4ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-05-21 20:42:03,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145413 states. [2021-05-21 20:42:07,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145413 to 96954. [2021-05-21 20:42:07,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96954 states, 96953 states have (on average 6.02823017338298) internal successors, (584455), 96953 states have internal predecessors, (584455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:42:08,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96954 states to 96954 states and 584455 transitions. [2021-05-21 20:42:08,514 INFO L78 Accepts]: Start accepts. Automaton has 96954 states and 584455 transitions. Word has length 33 [2021-05-21 20:42:08,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:42:08,514 INFO L482 AbstractCegarLoop]: Abstraction has 96954 states and 584455 transitions. [2021-05-21 20:42:08,514 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:42:08,514 INFO L276 IsEmpty]: Start isEmpty. Operand 96954 states and 584455 transitions. [2021-05-21 20:42:08,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:42:08,818 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:42:08,818 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:42:09,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:42:09,027 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:42:09,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:42:09,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1278439228, now seen corresponding path program 6 times [2021-05-21 20:42:09,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:42:09,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986304516] [2021-05-21 20:42:09,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:42:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:42:09,051 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:42:09,051 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:42:09,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986304516] [2021-05-21 20:42:09,051 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986304516] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:42:09,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678160699] [2021-05-21 20:42:09,052 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:42:09,107 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-05-21 20:42:09,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 20:42:09,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-21 20:42:09,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:42:09,188 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:42:09,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678160699] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:42:09,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:42:09,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-05-21 20:42:09,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574640094] [2021-05-21 20:42:09,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:42:09,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:42:09,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:42:09,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:42:09,189 INFO L87 Difference]: Start difference. First operand 96954 states and 584455 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:42:11,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:42:11,159 INFO L93 Difference]: Finished difference Result 133964 states and 783258 transitions. [2021-05-21 20:42:11,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-21 20:42:11,159 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 33 [2021-05-21 20:42:11,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:42:12,560 INFO L225 Difference]: With dead ends: 133964 [2021-05-21 20:42:12,560 INFO L226 Difference]: Without dead ends: 133804 [2021-05-21 20:42:12,561 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 64.1ms TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-05-21 20:42:12,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133804 states. [2021-05-21 20:42:16,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133804 to 97004. [2021-05-21 20:42:16,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97004 states, 97003 states have (on average 6.026844530581529) internal successors, (584622), 97003 states have internal predecessors, (584622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:42:16,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97004 states to 97004 states and 584622 transitions. [2021-05-21 20:42:16,808 INFO L78 Accepts]: Start accepts. Automaton has 97004 states and 584622 transitions. Word has length 33 [2021-05-21 20:42:16,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:42:16,808 INFO L482 AbstractCegarLoop]: Abstraction has 97004 states and 584622 transitions. [2021-05-21 20:42:16,808 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:42:16,808 INFO L276 IsEmpty]: Start isEmpty. Operand 97004 states and 584622 transitions. [2021-05-21 20:42:18,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:42:18,081 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:42:18,081 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:42:18,296 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:42:18,297 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:42:18,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:42:18,297 INFO L82 PathProgramCache]: Analyzing trace with hash 11476090, now seen corresponding path program 7 times [2021-05-21 20:42:18,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:42:18,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278446799] [2021-05-21 20:42:18,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:42:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:42:18,327 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:42:18,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:42:18,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278446799] [2021-05-21 20:42:18,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278446799] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:42:18,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662017391] [2021-05-21 20:42:18,328 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:42:18,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:42:18,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-21 20:42:18,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:42:18,428 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:42:18,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662017391] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:42:18,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:42:18,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-05-21 20:42:18,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989081037] [2021-05-21 20:42:18,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:42:18,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:42:18,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:42:18,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:42:18,430 INFO L87 Difference]: Start difference. First operand 97004 states and 584622 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:42:21,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:42:21,079 INFO L93 Difference]: Finished difference Result 227012 states and 1346306 transitions. [2021-05-21 20:42:21,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 20:42:21,079 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 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 33 [2021-05-21 20:42:21,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:42:23,046 INFO L225 Difference]: With dead ends: 227012 [2021-05-21 20:42:23,046 INFO L226 Difference]: Without dead ends: 227012 [2021-05-21 20:42:23,046 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 80.9ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-05-21 20:42:23,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227012 states. [2021-05-21 20:42:28,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227012 to 126089. [2021-05-21 20:42:28,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126089 states, 126088 states have (on average 6.168192056341603) internal successors, (777735), 126088 states have internal predecessors, (777735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:42:30,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126089 states to 126089 states and 777735 transitions. [2021-05-21 20:42:30,380 INFO L78 Accepts]: Start accepts. Automaton has 126089 states and 777735 transitions. Word has length 33 [2021-05-21 20:42:30,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:42:30,380 INFO L482 AbstractCegarLoop]: Abstraction has 126089 states and 777735 transitions. [2021-05-21 20:42:30,380 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:42:30,380 INFO L276 IsEmpty]: Start isEmpty. Operand 126089 states and 777735 transitions. [2021-05-21 20:42:30,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:42:30,840 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:42:30,840 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:42:31,040 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-05-21 20:42:31,041 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:42:31,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:42:31,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1498559738, now seen corresponding path program 8 times [2021-05-21 20:42:31,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:42:31,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380474745] [2021-05-21 20:42:31,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:42:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:42:31,064 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:42:31,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:42:31,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380474745] [2021-05-21 20:42:31,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380474745] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:42:31,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819906131] [2021-05-21 20:42:31,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:42:31,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-21 20:42:31,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 20:42:31,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-21 20:42:31,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:42:31,174 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:42:31,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819906131] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:42:31,174 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:42:31,174 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-05-21 20:42:31,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562441676] [2021-05-21 20:42:31,174 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:42:31,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:42:31,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:42:31,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:42:31,175 INFO L87 Difference]: Start difference. First operand 126089 states and 777735 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:42:33,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:42:33,420 INFO L93 Difference]: Finished difference Result 173970 states and 1035526 transitions. [2021-05-21 20:42:33,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-21 20:42:33,420 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 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 33 [2021-05-21 20:42:33,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:42:35,027 INFO L225 Difference]: With dead ends: 173970 [2021-05-21 20:42:35,028 INFO L226 Difference]: Without dead ends: 173746 [2021-05-21 20:42:35,028 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 58.7ms TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-05-21 20:42:35,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173746 states. [2021-05-21 20:42:40,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173746 to 125926. [2021-05-21 20:42:40,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125926 states, 125925 states have (on average 6.16766329164185) internal successors, (776663), 125925 states have internal predecessors, (776663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:42:41,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125926 states to 125926 states and 776663 transitions. [2021-05-21 20:42:41,038 INFO L78 Accepts]: Start accepts. Automaton has 125926 states and 776663 transitions. Word has length 33 [2021-05-21 20:42:41,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:42:41,039 INFO L482 AbstractCegarLoop]: Abstraction has 125926 states and 776663 transitions. [2021-05-21 20:42:41,039 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:42:41,039 INFO L276 IsEmpty]: Start isEmpty. Operand 125926 states and 776663 transitions. [2021-05-21 20:42:42,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:42:42,197 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:42:42,197 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:42:42,420 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-05-21 20:42:42,420 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:42:42,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:42:42,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1518077302, now seen corresponding path program 9 times [2021-05-21 20:42:42,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:42:42,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080093371] [2021-05-21 20:42:42,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:42:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:42:42,461 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:42:42,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:42:42,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080093371] [2021-05-21 20:42:42,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080093371] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:42:42,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820784626] [2021-05-21 20:42:42,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:42:42,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-21 20:42:42,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 20:42:42,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-21 20:42:42,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:42:42,591 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:42:42,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820784626] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:42:42,592 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:42:42,592 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-05-21 20:42:42,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557069337] [2021-05-21 20:42:42,592 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:42:42,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:42:42,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:42:42,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:42:42,593 INFO L87 Difference]: Start difference. First operand 125926 states and 776663 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:42:44,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:42:44,931 INFO L93 Difference]: Finished difference Result 199329 states and 1186134 transitions. [2021-05-21 20:42:44,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-21 20:42:44,932 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 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 33 [2021-05-21 20:42:44,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:42:46,726 INFO L225 Difference]: With dead ends: 199329 [2021-05-21 20:42:46,727 INFO L226 Difference]: Without dead ends: 199329 [2021-05-21 20:42:46,727 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 82.0ms TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-05-21 20:42:47,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199329 states. [2021-05-21 20:42:52,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199329 to 128232. [2021-05-21 20:42:52,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128232 states, 128231 states have (on average 6.171487393843922) internal successors, (791376), 128231 states have internal predecessors, (791376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:42:53,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128232 states to 128232 states and 791376 transitions. [2021-05-21 20:42:53,204 INFO L78 Accepts]: Start accepts. Automaton has 128232 states and 791376 transitions. Word has length 33 [2021-05-21 20:42:53,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:42:53,204 INFO L482 AbstractCegarLoop]: Abstraction has 128232 states and 791376 transitions. [2021-05-21 20:42:53,204 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:42:53,204 INFO L276 IsEmpty]: Start isEmpty. Operand 128232 states and 791376 transitions. [2021-05-21 20:42:54,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:42:54,342 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:42:54,342 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:42:54,566 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-05-21 20:42:54,566 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:42:54,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:42:54,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1545603378, now seen corresponding path program 10 times [2021-05-21 20:42:54,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:42:54,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565140593] [2021-05-21 20:42:54,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:42:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:42:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:42:54,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:42:54,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565140593] [2021-05-21 20:42:54,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565140593] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:42:54,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444029786] [2021-05-21 20:42:54,590 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:42:54,621 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-21 20:42:54,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 20:42:54,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-21 20:42:54,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:42:54,686 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:42:54,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444029786] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:42:54,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:42:54,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-05-21 20:42:54,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357605865] [2021-05-21 20:42:54,687 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:42:54,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:42:54,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:42:54,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:42:54,688 INFO L87 Difference]: Start difference. First operand 128232 states and 791376 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:42:57,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:42:57,422 INFO L93 Difference]: Finished difference Result 216985 states and 1280323 transitions. [2021-05-21 20:42:57,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-21 20:42:57,422 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 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 33 [2021-05-21 20:42:57,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:43:00,132 INFO L225 Difference]: With dead ends: 216985 [2021-05-21 20:43:00,132 INFO L226 Difference]: Without dead ends: 216825 [2021-05-21 20:43:00,132 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 79.0ms TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-05-21 20:43:00,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216825 states. [2021-05-21 20:43:05,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216825 to 128330. [2021-05-21 20:43:06,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128330 states, 128329 states have (on average 6.170133017478512) internal successors, (791807), 128329 states have internal predecessors, (791807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:43:07,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128330 states to 128330 states and 791807 transitions. [2021-05-21 20:43:07,705 INFO L78 Accepts]: Start accepts. Automaton has 128330 states and 791807 transitions. Word has length 33 [2021-05-21 20:43:07,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:43:07,705 INFO L482 AbstractCegarLoop]: Abstraction has 128330 states and 791807 transitions. [2021-05-21 20:43:07,705 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:43:07,705 INFO L276 IsEmpty]: Start isEmpty. Operand 128330 states and 791807 transitions. [2021-05-21 20:43:08,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:43:08,151 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:43:08,151 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:43:08,351 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:43:08,352 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:43:08,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:43:08,352 INFO L82 PathProgramCache]: Analyzing trace with hash -915701574, now seen corresponding path program 11 times [2021-05-21 20:43:08,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:43:08,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604838415] [2021-05-21 20:43:08,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:43:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:43:08,378 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:43:08,378 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:43:08,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604838415] [2021-05-21 20:43:08,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604838415] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:43:08,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698098406] [2021-05-21 20:43:08,379 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:43:08,424 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-05-21 20:43:08,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 20:43:08,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-21 20:43:08,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:43:08,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:43:08,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698098406] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:43:08,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:43:08,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-05-21 20:43:08,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047827085] [2021-05-21 20:43:08,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:43:08,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:43:08,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:43:08,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:43:08,487 INFO L87 Difference]: Start difference. First operand 128330 states and 791807 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:43:11,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:43:11,752 INFO L93 Difference]: Finished difference Result 212002 states and 1272275 transitions. [2021-05-21 20:43:11,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-21 20:43:11,752 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 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 33 [2021-05-21 20:43:11,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:43:12,955 INFO L225 Difference]: With dead ends: 212002 [2021-05-21 20:43:12,955 INFO L226 Difference]: Without dead ends: 212002 [2021-05-21 20:43:12,956 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 125.4ms TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-05-21 20:43:13,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212002 states. [2021-05-21 20:43:18,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212002 to 140596. [2021-05-21 20:43:18,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140596 states, 140595 states have (on average 6.156221771755752) internal successors, (865534), 140595 states have internal predecessors, (865534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:43:20,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140596 states to 140596 states and 865534 transitions. [2021-05-21 20:43:20,093 INFO L78 Accepts]: Start accepts. Automaton has 140596 states and 865534 transitions. Word has length 33 [2021-05-21 20:43:20,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:43:20,094 INFO L482 AbstractCegarLoop]: Abstraction has 140596 states and 865534 transitions. [2021-05-21 20:43:20,094 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:43:20,094 INFO L276 IsEmpty]: Start isEmpty. Operand 140596 states and 865534 transitions. [2021-05-21 20:43:21,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:43:21,406 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:43:21,406 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:43:21,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-21 20:43:21,607 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:43:21,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:43:21,607 INFO L82 PathProgramCache]: Analyzing trace with hash 42418712, now seen corresponding path program 12 times [2021-05-21 20:43:21,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:43:21,608 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384914641] [2021-05-21 20:43:21,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:43:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:43:21,627 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:43:21,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:43:21,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384914641] [2021-05-21 20:43:21,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384914641] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:43:21,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8625760] [2021-05-21 20:43:21,628 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:43:21,664 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-05-21 20:43:21,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 20:43:21,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-21 20:43:21,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:43:21,713 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:43:21,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8625760] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:43:21,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:43:21,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-05-21 20:43:21,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679041862] [2021-05-21 20:43:21,714 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:43:21,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:43:21,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:43:21,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:43:21,715 INFO L87 Difference]: Start difference. First operand 140596 states and 865534 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:43:24,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:43:24,172 INFO L93 Difference]: Finished difference Result 227249 states and 1340487 transitions. [2021-05-21 20:43:24,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-21 20:43:24,172 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 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 33 [2021-05-21 20:43:24,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:43:26,168 INFO L225 Difference]: With dead ends: 227249 [2021-05-21 20:43:26,168 INFO L226 Difference]: Without dead ends: 226769 [2021-05-21 20:43:26,168 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-05-21 20:43:26,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226769 states. [2021-05-21 20:43:31,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226769 to 146902. [2021-05-21 20:43:31,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146902 states, 146901 states have (on average 6.137010639818653) internal successors, (901533), 146901 states have internal predecessors, (901533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:43:33,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146902 states to 146902 states and 901533 transitions. [2021-05-21 20:43:33,679 INFO L78 Accepts]: Start accepts. Automaton has 146902 states and 901533 transitions. Word has length 33 [2021-05-21 20:43:33,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:43:33,680 INFO L482 AbstractCegarLoop]: Abstraction has 146902 states and 901533 transitions. [2021-05-21 20:43:33,680 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:43:33,680 INFO L276 IsEmpty]: Start isEmpty. Operand 146902 states and 901533 transitions. [2021-05-21 20:43:34,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:43:34,164 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:43:34,164 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:43:34,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-05-21 20:43:34,369 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:43:34,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:43:34,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1161517172, now seen corresponding path program 3 times [2021-05-21 20:43:34,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:43:34,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063195006] [2021-05-21 20:43:34,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:43:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:43:34,395 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:43:34,395 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:43:34,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063195006] [2021-05-21 20:43:34,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063195006] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:43:34,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401322108] [2021-05-21 20:43:34,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:43:34,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-21 20:43:34,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 20:43:34,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-21 20:43:34,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:43:34,511 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:43:34,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401322108] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:43:34,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:43:34,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-05-21 20:43:34,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875471037] [2021-05-21 20:43:34,512 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:43:34,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:43:34,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:43:34,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:43:34,513 INFO L87 Difference]: Start difference. First operand 146902 states and 901533 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:43:41,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:43:41,642 INFO L93 Difference]: Finished difference Result 514975 states and 3149120 transitions. [2021-05-21 20:43:41,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-21 20:43:41,642 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 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 33 [2021-05-21 20:43:41,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:43:48,941 INFO L225 Difference]: With dead ends: 514975 [2021-05-21 20:43:48,941 INFO L226 Difference]: Without dead ends: 514975 [2021-05-21 20:43:48,943 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 112.9ms TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2021-05-21 20:43:52,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514975 states. [2021-05-21 20:44:03,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514975 to 223496. [2021-05-21 20:44:04,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223496 states, 223495 states have (on average 6.274547529027495) internal successors, (1402330), 223495 states have internal predecessors, (1402330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:44:07,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223496 states to 223496 states and 1402330 transitions. [2021-05-21 20:44:07,242 INFO L78 Accepts]: Start accepts. Automaton has 223496 states and 1402330 transitions. Word has length 33 [2021-05-21 20:44:07,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:44:07,242 INFO L482 AbstractCegarLoop]: Abstraction has 223496 states and 1402330 transitions. [2021-05-21 20:44:07,243 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:44:07,243 INFO L276 IsEmpty]: Start isEmpty. Operand 223496 states and 1402330 transitions. [2021-05-21 20:44:08,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:44:08,178 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:44:08,178 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:44:08,378 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-21 20:44:08,378 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:44:08,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:44:08,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1985612620, now seen corresponding path program 4 times [2021-05-21 20:44:08,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:44:08,379 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435603281] [2021-05-21 20:44:08,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:44:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:44:08,401 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:44:08,402 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:44:08,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435603281] [2021-05-21 20:44:08,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435603281] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:44:08,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626594446] [2021-05-21 20:44:08,402 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:44:08,463 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-21 20:44:08,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 20:44:08,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-21 20:44:08,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:44:08,516 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:44:08,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626594446] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:44:08,516 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:44:08,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-05-21 20:44:08,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031922156] [2021-05-21 20:44:08,517 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:44:08,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:44:08,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:44:08,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:44:08,517 INFO L87 Difference]: Start difference. First operand 223496 states and 1402330 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:44:15,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:44:15,098 INFO L93 Difference]: Finished difference Result 462426 states and 2827177 transitions. [2021-05-21 20:44:15,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 20:44:15,110 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 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 33 [2021-05-21 20:44:15,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:44:19,220 INFO L225 Difference]: With dead ends: 462426 [2021-05-21 20:44:19,220 INFO L226 Difference]: Without dead ends: 461530 [2021-05-21 20:44:19,220 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 71.4ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-05-21 20:44:20,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461530 states. [2021-05-21 20:44:33,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461530 to 306370. [2021-05-21 20:44:33,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306370 states, 306369 states have (on average 6.378080027679041) internal successors, (1954046), 306369 states have internal predecessors, (1954046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:44:37,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306370 states to 306370 states and 1954046 transitions. [2021-05-21 20:44:37,878 INFO L78 Accepts]: Start accepts. Automaton has 306370 states and 1954046 transitions. Word has length 33 [2021-05-21 20:44:37,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:44:37,878 INFO L482 AbstractCegarLoop]: Abstraction has 306370 states and 1954046 transitions. [2021-05-21 20:44:37,878 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:44:37,878 INFO L276 IsEmpty]: Start isEmpty. Operand 306370 states and 1954046 transitions. [2021-05-21 20:44:40,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:44:40,622 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:44:40,622 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:44:40,836 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:44:40,837 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:44:40,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:44:40,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1914397464, now seen corresponding path program 5 times [2021-05-21 20:44:40,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:44:40,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040878574] [2021-05-21 20:44:40,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:44:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:44:40,882 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:44:40,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:44:40,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040878574] [2021-05-21 20:44:40,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040878574] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:44:40,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548692876] [2021-05-21 20:44:40,883 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:44:40,956 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-05-21 20:44:40,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 20:44:40,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-21 20:44:40,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:44:41,049 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:44:41,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548692876] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:44:41,050 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:44:41,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 6 [2021-05-21 20:44:41,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787432795] [2021-05-21 20:44:41,050 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:44:41,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:44:41,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:44:41,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:44:41,051 INFO L87 Difference]: Start difference. First operand 306370 states and 1954046 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:44:50,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:44:50,238 INFO L93 Difference]: Finished difference Result 461475 states and 2840923 transitions. [2021-05-21 20:44:50,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-21 20:44:50,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 33 [2021-05-21 20:44:50,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:44:56,048 INFO L225 Difference]: With dead ends: 461475 [2021-05-21 20:44:56,049 INFO L226 Difference]: Without dead ends: 461475 [2021-05-21 20:44:56,049 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 70.9ms TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-05-21 20:44:57,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461475 states. [2021-05-21 20:45:11,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461475 to 301660. [2021-05-21 20:45:11,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301660 states, 301659 states have (on average 6.34969949512529) internal successors, (1915444), 301659 states have internal predecessors, (1915444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:45:15,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301660 states to 301660 states and 1915444 transitions. [2021-05-21 20:45:15,564 INFO L78 Accepts]: Start accepts. Automaton has 301660 states and 1915444 transitions. Word has length 33 [2021-05-21 20:45:15,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:45:15,564 INFO L482 AbstractCegarLoop]: Abstraction has 301660 states and 1915444 transitions. [2021-05-21 20:45:15,565 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:45:15,565 INFO L276 IsEmpty]: Start isEmpty. Operand 301660 states and 1915444 transitions. [2021-05-21 20:45:16,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:45:16,950 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:45:16,950 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:45:17,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:45:17,153 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:45:17,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:45:17,153 INFO L82 PathProgramCache]: Analyzing trace with hash 947681444, now seen corresponding path program 6 times [2021-05-21 20:45:17,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:45:17,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321849414] [2021-05-21 20:45:17,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:45:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:45:17,171 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:45:17,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:45:17,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321849414] [2021-05-21 20:45:17,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321849414] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:45:17,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908977688] [2021-05-21 20:45:17,172 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:45:17,203 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-05-21 20:45:17,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 20:45:17,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-21 20:45:17,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:45:17,263 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:45:17,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908977688] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:45:17,263 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:45:17,263 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 6 [2021-05-21 20:45:17,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222254283] [2021-05-21 20:45:17,263 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:45:17,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:45:17,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:45:17,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:45:17,264 INFO L87 Difference]: Start difference. First operand 301660 states and 1915444 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:45:24,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:45:24,365 INFO L93 Difference]: Finished difference Result 410582 states and 2520049 transitions. [2021-05-21 20:45:24,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-21 20:45:24,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 33 [2021-05-21 20:45:24,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:45:29,742 INFO L225 Difference]: With dead ends: 410582 [2021-05-21 20:45:29,743 INFO L226 Difference]: Without dead ends: 410350 [2021-05-21 20:45:29,743 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 45.5ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-05-21 20:45:30,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410350 states. [2021-05-21 20:45:43,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410350 to 302246. [2021-05-21 20:45:43,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302246 states, 302245 states have (on average 6.348105014144155) internal successors, (1918683), 302245 states have internal predecessors, (1918683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:45:47,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302246 states to 302246 states and 1918683 transitions. [2021-05-21 20:45:47,122 INFO L78 Accepts]: Start accepts. Automaton has 302246 states and 1918683 transitions. Word has length 33 [2021-05-21 20:45:47,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:45:47,122 INFO L482 AbstractCegarLoop]: Abstraction has 302246 states and 1918683 transitions. [2021-05-21 20:45:47,122 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:45:47,122 INFO L276 IsEmpty]: Start isEmpty. Operand 302246 states and 1918683 transitions. [2021-05-21 20:45:49,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:45:49,252 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:45:49,252 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:45:49,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-05-21 20:45:49,457 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:45:49,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:45:49,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1649224646, now seen corresponding path program 7 times [2021-05-21 20:45:49,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:45:49,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6761759] [2021-05-21 20:45:49,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:45:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:45:49,476 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-21 20:45:49,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:45:49,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6761759] [2021-05-21 20:45:49,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6761759] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:45:49,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359552164] [2021-05-21 20:45:49,477 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:45:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:45:49,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-21 20:45:49,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:45:49,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:45:49,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359552164] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:45:49,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:45:49,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 6 [2021-05-21 20:45:49,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369383632] [2021-05-21 20:45:49,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:45:49,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:45:49,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:45:49,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:45:49,586 INFO L87 Difference]: Start difference. First operand 302246 states and 1918683 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:45:57,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:45:57,128 INFO L93 Difference]: Finished difference Result 543501 states and 3319923 transitions. [2021-05-21 20:45:57,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-21 20:45:57,129 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 33 [2021-05-21 20:45:57,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:46:03,767 INFO L225 Difference]: With dead ends: 543501 [2021-05-21 20:46:03,768 INFO L226 Difference]: Without dead ends: 543501 [2021-05-21 20:46:03,769 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 45.9ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-05-21 20:46:06,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543501 states. [2021-05-21 20:46:24,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543501 to 302246. [2021-05-21 20:46:24,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302246 states, 302245 states have (on average 6.332521629803636) internal successors, (1913973), 302245 states have internal predecessors, (1913973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:46:28,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302246 states to 302246 states and 1913973 transitions. [2021-05-21 20:46:28,781 INFO L78 Accepts]: Start accepts. Automaton has 302246 states and 1913973 transitions. Word has length 33 [2021-05-21 20:46:28,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:46:28,781 INFO L482 AbstractCegarLoop]: Abstraction has 302246 states and 1913973 transitions. [2021-05-21 20:46:28,781 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:46:28,781 INFO L276 IsEmpty]: Start isEmpty. Operand 302246 states and 1913973 transitions. [2021-05-21 20:46:30,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:46:30,081 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:46:30,081 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:46:30,290 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-21 20:46:30,290 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:46:30,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:46:30,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1887188038, now seen corresponding path program 8 times [2021-05-21 20:46:30,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:46:30,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517777574] [2021-05-21 20:46:30,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:46:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:46:30,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-21 20:46:30,308 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:46:30,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517777574] [2021-05-21 20:46:30,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517777574] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:46:30,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072888346] [2021-05-21 20:46:30,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:46:30,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-21 20:46:30,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 20:46:30,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-21 20:46:30,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:46:30,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:46:30,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072888346] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:46:30,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:46:30,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 6 [2021-05-21 20:46:30,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368221678] [2021-05-21 20:46:30,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:46:30,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:46:30,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:46:30,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:46:30,398 INFO L87 Difference]: Start difference. First operand 302246 states and 1913973 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:46:37,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:46:37,071 INFO L93 Difference]: Finished difference Result 447767 states and 2726927 transitions. [2021-05-21 20:46:37,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-21 20:46:37,071 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 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 33 [2021-05-21 20:46:37,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:46:43,001 INFO L225 Difference]: With dead ends: 447767 [2021-05-21 20:46:43,001 INFO L226 Difference]: Without dead ends: 447543 [2021-05-21 20:46:43,002 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 46.5ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-05-21 20:46:45,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447543 states. [2021-05-21 20:46:59,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447543 to 293050. [2021-05-21 20:47:00,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293050 states, 293049 states have (on average 6.319526768560889) internal successors, (1851931), 293049 states have internal predecessors, (1851931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:47:03,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293050 states to 293050 states and 1851931 transitions. [2021-05-21 20:47:03,927 INFO L78 Accepts]: Start accepts. Automaton has 293050 states and 1851931 transitions. Word has length 33 [2021-05-21 20:47:03,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:47:03,927 INFO L482 AbstractCegarLoop]: Abstraction has 293050 states and 1851931 transitions. [2021-05-21 20:47:03,927 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:47:03,927 INFO L276 IsEmpty]: Start isEmpty. Operand 293050 states and 1851931 transitions. [2021-05-21 20:47:05,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:47:05,965 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:47:05,965 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:47:06,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:47:06,181 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:47:06,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:47:06,181 INFO L82 PathProgramCache]: Analyzing trace with hash -314293450, now seen corresponding path program 9 times [2021-05-21 20:47:06,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:47:06,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786740046] [2021-05-21 20:47:06,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:47:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:47:06,201 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-21 20:47:06,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:47:06,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786740046] [2021-05-21 20:47:06,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786740046] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:47:06,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085109240] [2021-05-21 20:47:06,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:47:06,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-21 20:47:06,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 20:47:06,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-21 20:47:06,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:47:06,304 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:47:06,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085109240] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:47:06,304 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:47:06,304 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 6 [2021-05-21 20:47:06,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832927541] [2021-05-21 20:47:06,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:47:06,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:47:06,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:47:06,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:47:06,306 INFO L87 Difference]: Start difference. First operand 293050 states and 1851931 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:47:13,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:47:13,855 INFO L93 Difference]: Finished difference Result 554308 states and 3389253 transitions. [2021-05-21 20:47:13,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-21 20:47:13,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 33 [2021-05-21 20:47:13,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:47:22,348 INFO L225 Difference]: With dead ends: 554308 [2021-05-21 20:47:22,348 INFO L226 Difference]: Without dead ends: 554308 [2021-05-21 20:47:22,348 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 67.0ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-05-21 20:47:23,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554308 states. [2021-05-21 20:47:40,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554308 to 297760. [2021-05-21 20:47:41,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297760 states, 297759 states have (on average 6.317568906397455) internal successors, (1881113), 297759 states have internal predecessors, (1881113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:47:44,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297760 states to 297760 states and 1881113 transitions. [2021-05-21 20:47:44,798 INFO L78 Accepts]: Start accepts. Automaton has 297760 states and 1881113 transitions. Word has length 33 [2021-05-21 20:47:44,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:47:44,798 INFO L482 AbstractCegarLoop]: Abstraction has 297760 states and 1881113 transitions. [2021-05-21 20:47:44,798 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:47:44,809 INFO L276 IsEmpty]: Start isEmpty. Operand 297760 states and 1881113 transitions. [2021-05-21 20:47:46,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:47:46,139 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:47:46,139 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:47:46,339 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-21 20:47:46,342 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:47:46,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:47:46,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1747181838, now seen corresponding path program 10 times [2021-05-21 20:47:46,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:47:46,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210482838] [2021-05-21 20:47:46,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:47:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:47:46,360 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-21 20:47:46,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:47:46,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210482838] [2021-05-21 20:47:46,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210482838] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:47:46,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371002631] [2021-05-21 20:47:46,361 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:47:46,393 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-21 20:47:46,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 20:47:46,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-21 20:47:46,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:47:46,469 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:47:46,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371002631] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:47:46,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:47:46,470 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 6 [2021-05-21 20:47:46,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111825801] [2021-05-21 20:47:46,470 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:47:46,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:47:46,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:47:46,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:47:46,471 INFO L87 Difference]: Start difference. First operand 297760 states and 1881113 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:47:53,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:47:53,560 INFO L93 Difference]: Finished difference Result 498176 states and 3017840 transitions. [2021-05-21 20:47:53,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-21 20:47:53,560 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 33 [2021-05-21 20:47:53,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:48:01,432 INFO L225 Difference]: With dead ends: 498176 [2021-05-21 20:48:01,432 INFO L226 Difference]: Without dead ends: 497944 [2021-05-21 20:48:01,433 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 60.3ms TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-05-21 20:48:03,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497944 states. [2021-05-21 20:48:18,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497944 to 297760. [2021-05-21 20:48:19,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297760 states, 297759 states have (on average 6.317192763274997) internal successors, (1881001), 297759 states have internal predecessors, (1881001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:48:22,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297760 states to 297760 states and 1881001 transitions. [2021-05-21 20:48:22,988 INFO L78 Accepts]: Start accepts. Automaton has 297760 states and 1881001 transitions. Word has length 33 [2021-05-21 20:48:22,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:48:22,988 INFO L482 AbstractCegarLoop]: Abstraction has 297760 states and 1881001 transitions. [2021-05-21 20:48:22,988 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:48:22,988 INFO L276 IsEmpty]: Start isEmpty. Operand 297760 states and 1881001 transitions. [2021-05-21 20:48:24,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:48:24,315 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:48:24,315 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:48:24,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:48:24,522 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:48:24,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:48:24,522 INFO L82 PathProgramCache]: Analyzing trace with hash -2074346390, now seen corresponding path program 11 times [2021-05-21 20:48:24,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:48:24,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307997342] [2021-05-21 20:48:24,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:48:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:48:24,544 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:48:24,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:48:24,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307997342] [2021-05-21 20:48:24,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307997342] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:48:24,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994698578] [2021-05-21 20:48:24,545 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:48:24,596 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-05-21 20:48:24,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 20:48:24,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-21 20:48:24,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:48:24,649 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:48:24,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994698578] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:48:24,649 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:48:24,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-05-21 20:48:24,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66075884] [2021-05-21 20:48:24,651 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:48:24,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:48:24,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:48:24,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:48:24,651 INFO L87 Difference]: Start difference. First operand 297760 states and 1881001 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:48:32,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:48:32,239 INFO L93 Difference]: Finished difference Result 518884 states and 3204697 transitions. [2021-05-21 20:48:32,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-21 20:48:32,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 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 33 [2021-05-21 20:48:32,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:48:39,000 INFO L225 Difference]: With dead ends: 518884 [2021-05-21 20:48:39,000 INFO L226 Difference]: Without dead ends: 518884 [2021-05-21 20:48:39,000 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 121.7ms TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2021-05-21 20:48:41,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518884 states. [2021-05-21 20:48:58,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518884 to 324337. [2021-05-21 20:49:00,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324337 states, 324336 states have (on average 6.269399634946475) internal successors, (2033392), 324336 states have internal predecessors, (2033392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:49:03,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324337 states to 324337 states and 2033392 transitions. [2021-05-21 20:49:03,398 INFO L78 Accepts]: Start accepts. Automaton has 324337 states and 2033392 transitions. Word has length 33 [2021-05-21 20:49:03,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:49:03,398 INFO L482 AbstractCegarLoop]: Abstraction has 324337 states and 2033392 transitions. [2021-05-21 20:49:03,398 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:49:03,398 INFO L276 IsEmpty]: Start isEmpty. Operand 324337 states and 2033392 transitions. [2021-05-21 20:49:05,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:49:05,572 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:49:05,572 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:49:05,772 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-21 20:49:05,772 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:49:05,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:49:05,773 INFO L82 PathProgramCache]: Analyzing trace with hash 365246792, now seen corresponding path program 12 times [2021-05-21 20:49:05,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:49:05,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416806009] [2021-05-21 20:49:05,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:49:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:49:05,809 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:49:05,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:49:05,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416806009] [2021-05-21 20:49:05,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416806009] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:49:05,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139847265] [2021-05-21 20:49:05,809 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:49:05,845 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-05-21 20:49:05,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 20:49:05,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-21 20:49:05,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:49:05,893 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:49:05,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139847265] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:49:05,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:49:05,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-05-21 20:49:05,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315535354] [2021-05-21 20:49:05,894 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:49:05,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:49:05,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:49:05,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:49:05,895 INFO L87 Difference]: Start difference. First operand 324337 states and 2033392 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:49:12,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:49:12,970 INFO L93 Difference]: Finished difference Result 506455 states and 3046908 transitions. [2021-05-21 20:49:12,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 20:49:12,970 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 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 33 [2021-05-21 20:49:12,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:49:20,212 INFO L225 Difference]: With dead ends: 506455 [2021-05-21 20:49:20,212 INFO L226 Difference]: Without dead ends: 505759 [2021-05-21 20:49:20,212 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 76.2ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-05-21 20:49:22,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505759 states. [2021-05-21 20:49:37,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505759 to 342540. [2021-05-21 20:49:38,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342540 states, 342539 states have (on average 6.238892505670887) internal successors, (2137064), 342539 states have internal predecessors, (2137064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:49:42,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342540 states to 342540 states and 2137064 transitions. [2021-05-21 20:49:42,788 INFO L78 Accepts]: Start accepts. Automaton has 342540 states and 2137064 transitions. Word has length 33 [2021-05-21 20:49:42,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:49:42,788 INFO L482 AbstractCegarLoop]: Abstraction has 342540 states and 2137064 transitions. [2021-05-21 20:49:42,788 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:49:42,789 INFO L276 IsEmpty]: Start isEmpty. Operand 342540 states and 2137064 transitions. [2021-05-21 20:49:45,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:49:45,031 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:49:45,031 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:49:45,253 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-21 20:49:45,254 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:49:45,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:49:45,254 INFO L82 PathProgramCache]: Analyzing trace with hash 19316104, now seen corresponding path program 3 times [2021-05-21 20:49:45,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:49:45,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641634571] [2021-05-21 20:49:45,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:49:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:49:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:49:45,279 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:49:45,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641634571] [2021-05-21 20:49:45,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641634571] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:49:45,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91957011] [2021-05-21 20:49:45,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 20:49:45,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-21 20:49:45,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 20:49:45,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-21 20:49:45,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 20:49:45,402 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:49:45,403 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91957011] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 20:49:45,403 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 20:49:45,403 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-05-21 20:49:45,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185372455] [2021-05-21 20:49:45,403 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:49:45,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:49:45,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:49:45,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:49:45,404 INFO L87 Difference]: Start difference. First operand 342540 states and 2137064 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-05-21 20:49:51,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-21 20:49:51,384 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-21 20:49:51,385 WARN L547 AbstractCegarLoop]: Verification canceled [2021-05-21 20:49:51,387 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 20:49:51,388 WARN L196 ceAbstractionStarter]: Timeout [2021-05-21 20:49:51,388 INFO L202 PluginConnector]: Adding new model exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 08:49:51 BasicIcfg [2021-05-21 20:49:51,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 20:49:51,389 INFO L168 Benchmark]: Toolchain (without parser) took 536986.28 ms. Allocated memory was 352.3 MB in the beginning and 16.0 GB in the end (delta: 15.6 GB). Free memory was 332.0 MB in the beginning and 8.0 GB in the end (delta: -7.6 GB). Peak memory consumption was 8.2 GB. Max. memory is 16.0 GB. [2021-05-21 20:49:51,389 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 352.3 MB. Free memory is still 333.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 20:49:51,389 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.74 ms. Allocated memory is still 352.3 MB. Free memory was 331.9 MB in the beginning and 330.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 20:49:51,389 INFO L168 Benchmark]: Boogie Preprocessor took 15.87 ms. Allocated memory is still 352.3 MB. Free memory was 330.3 MB in the beginning and 329.4 MB in the end (delta: 966.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 20:49:51,389 INFO L168 Benchmark]: RCFGBuilder took 248.46 ms. Allocated memory is still 352.3 MB. Free memory was 329.2 MB in the beginning and 316.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-05-21 20:49:51,389 INFO L168 Benchmark]: TraceAbstraction took 536694.78 ms. Allocated memory was 352.3 MB in the beginning and 16.0 GB in the end (delta: 15.6 GB). Free memory was 316.1 MB in the beginning and 8.0 GB in the end (delta: -7.7 GB). Peak memory consumption was 8.2 GB. Max. memory is 16.0 GB. [2021-05-21 20:49:51,389 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 352.3 MB. Free memory is still 333.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.74 ms. Allocated memory is still 352.3 MB. Free memory was 331.9 MB in the beginning and 330.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 15.87 ms. Allocated memory is still 352.3 MB. Free memory was 330.3 MB in the beginning and 329.4 MB in the end (delta: 966.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 248.46 ms. Allocated memory is still 352.3 MB. Free memory was 329.2 MB in the beginning and 316.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 536694.78 ms. Allocated memory was 352.3 MB in the beginning and 16.0 GB in the end (delta: 15.6 GB). Free memory was 316.1 MB in the beginning and 8.0 GB in the end (delta: -7.7 GB). Peak memory consumption was 8.2 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (342540states) and FLOYD_HOARE automaton (currently 17 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (499913 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 13 procedures, 72 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 536583.1ms, OverallIterations: 39, TraceHistogramMax: 2, EmptinessCheckTime: 26916.5ms, AutomataDifference: 201774.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 609.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3279 SDtfs, 7475 SDslu, 8293 SDs, 0 SdLazy, 7445 SolverSat, 270 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3979.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1190 GetRequests, 817 SyntacticMatches, 40 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 2040.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=342540occurred in iteration=38, InterpolantAutomatonStates: 355, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 296622.2ms AutomataMinimizationTime, 38 MinimizatonAttempts, 2780968 StatesRemovedByMinimization, 38 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 192.3ms SsaConstructionTime, 546.6ms SatisfiabilityAnalysisTime, 3146.3ms InterpolantComputationTime, 2098 NumberOfCodeBlocks, 2098 NumberOfCodeBlocksAsserted, 96 NumberOfCheckSat, 2032 ConstructedInterpolants, 0 QuantifiedInterpolants, 8707 SizeOfPredicates, 84 NumberOfNonLiveVariables, 3159 ConjunctsInSsa, 147 ConjunctsInUnsatCore, 66 InterpolantComputations, 12 PerfectInterpolantSequences, 122/242 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown