/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 19:51:08,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 19:51:08,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 19:51:08,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-13 19:51:08,556 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-07-13 19:51:08,591 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 19:51:08,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 19:51:08,592 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 19:51:08,592 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 19:51:08,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 19:51:08,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 19:51:08,594 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 19:51:08,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 19:51:08,595 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 19:51:08,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 19:51:08,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 19:51:08,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 19:51:08,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 19:51:08,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 19:51:08,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 19:51:08,597 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 19:51:08,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 19:51:08,597 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 19:51:08,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 19:51:08,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 19:51:08,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 19:51:08,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 19:51:08,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 19:51:08,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 19:51:08,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 19:51:08,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 19:51:08,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 19:51:08,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 19:51:08,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 19:51:08,599 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 19:51:08,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 19:51:08,599 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 19:51:08,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 19:51:08,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 19:51:08,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 19:51:08,942 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-13 19:51:08,943 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-13 19:51:08,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled.wvr.bpl [2021-07-13 19:51:08,944 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled.wvr.bpl' [2021-07-13 19:51:08,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 19:51:08,982 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-13 19:51:08,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 19:51:08,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 19:51:08,983 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 19:51:08,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:51:08" (1/1) ... [2021-07-13 19:51:09,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:51:08" (1/1) ... [2021-07-13 19:51:09,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 19:51:09,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 19:51:09,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 19:51:09,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 19:51:09,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:51:08" (1/1) ... [2021-07-13 19:51:09,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:51:08" (1/1) ... [2021-07-13 19:51:09,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:51:08" (1/1) ... [2021-07-13 19:51:09,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:51:08" (1/1) ... [2021-07-13 19:51:09,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:51:08" (1/1) ... [2021-07-13 19:51:09,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:51:08" (1/1) ... [2021-07-13 19:51:09,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:51:08" (1/1) ... [2021-07-13 19:51:09,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 19:51:09,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 19:51:09,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 19:51:09,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 19:51:09,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:51:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 19:51:09,101 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-13 19:51:09,102 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-13 19:51:09,102 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-13 19:51:09,102 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-13 19:51:09,102 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-13 19:51:09,102 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-13 19:51:09,102 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-13 19:51:09,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 19:51:09,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 19:51:09,104 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-13 19:51:09,295 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 19:51:09,296 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-13 19:51:09,297 INFO L202 PluginConnector]: Adding new model misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:51:09 BoogieIcfgContainer [2021-07-13 19:51:09,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 19:51:09,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 19:51:09,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 19:51:09,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 19:51:09,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:51:08" (1/2) ... [2021-07-13 19:51:09,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15207a2d and model type misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:51:09, skipping insertion in model container [2021-07-13 19:51:09,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:51:09" (2/2) ... [2021-07-13 19:51:09,303 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-2-unrolled.wvr.bpl [2021-07-13 19:51:09,319 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 19:51:09,319 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 19:51:09,320 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-13 19:51:09,321 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 19:51:09,378 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-07-13 19:51:09,413 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-07-13 19:51:09,428 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 19:51:09,428 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 19:51:09,429 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 19:51:09,429 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 19:51:09,429 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 19:51:09,429 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 19:51:09,429 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 19:51:09,429 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 19:51:09,436 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 25 transitions, 66 flow [2021-07-13 19:51:09,451 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 68 states, 67 states have (on average 1.955223880597015) internal successors, (131), 67 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:51:09,453 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 67 states have (on average 1.955223880597015) internal successors, (131), 67 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:51:09,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-07-13 19:51:09,459 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:51:09,459 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:51:09,460 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:51:09,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:51:09,464 INFO L82 PathProgramCache]: Analyzing trace with hash -2088431025, now seen corresponding path program 1 times [2021-07-13 19:51:09,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:51:09,471 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212565382] [2021-07-13 19:51:09,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:51:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:51:09,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:51:09,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:51:09,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212565382] [2021-07-13 19:51:09,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212565382] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:51:09,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:51:09,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-13 19:51:09,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985360763] [2021-07-13 19:51:09,617 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 19:51:09,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:51:09,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 19:51:09,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 19:51:09,635 INFO L87 Difference]: Start difference. First operand has 68 states, 67 states have (on average 1.955223880597015) internal successors, (131), 67 states have internal predecessors, (131), 0 states have call successors, (0), 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 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:51:09,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:51:09,693 INFO L93 Difference]: Finished difference Result 93 states and 180 transitions. [2021-07-13 19:51:09,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 19:51:09,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2021-07-13 19:51:09,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:51:09,703 INFO L225 Difference]: With dead ends: 93 [2021-07-13 19:51:09,703 INFO L226 Difference]: Without dead ends: 86 [2021-07-13 19:51:09,705 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 19:51:09,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-07-13 19:51:09,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 77. [2021-07-13 19:51:09,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.9605263157894737) internal successors, (149), 76 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:51:09,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 149 transitions. [2021-07-13 19:51:09,751 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 149 transitions. Word has length 11 [2021-07-13 19:51:09,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:51:09,751 INFO L482 AbstractCegarLoop]: Abstraction has 77 states and 149 transitions. [2021-07-13 19:51:09,752 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:51:09,752 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 149 transitions. [2021-07-13 19:51:09,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-13 19:51:09,754 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:51:09,754 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:51:09,754 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 19:51:09,754 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:51:09,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:51:09,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1782774576, now seen corresponding path program 1 times [2021-07-13 19:51:09,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:51:09,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8800356] [2021-07-13 19:51:09,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:51:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:51:09,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:51:09,839 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:51:09,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8800356] [2021-07-13 19:51:09,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8800356] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:51:09,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461910415] [2021-07-13 19:51:09,839 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 [2021-07-13 19:51:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:51:09,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2021-07-13 19:51:09,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:51:09,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:51:09,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461910415] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:51:09,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:51:09,947 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-07-13 19:51:09,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134844948] [2021-07-13 19:51:09,948 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 19:51:09,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:51:09,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 19:51:09,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 19:51:09,949 INFO L87 Difference]: Start difference. First operand 77 states and 149 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:51:09,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:51:09,994 INFO L93 Difference]: Finished difference Result 120 states and 224 transitions. [2021-07-13 19:51:09,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:51:09,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-07-13 19:51:09,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:51:09,995 INFO L225 Difference]: With dead ends: 120 [2021-07-13 19:51:09,995 INFO L226 Difference]: Without dead ends: 120 [2021-07-13 19:51:09,996 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:51:09,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-07-13 19:51:10,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 80. [2021-07-13 19:51:10,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.9873417721518987) internal successors, (157), 79 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:51:10,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 157 transitions. [2021-07-13 19:51:10,005 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 157 transitions. Word has length 16 [2021-07-13 19:51:10,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:51:10,005 INFO L482 AbstractCegarLoop]: Abstraction has 80 states and 157 transitions. [2021-07-13 19:51:10,005 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:51:10,005 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 157 transitions. [2021-07-13 19:51:10,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-13 19:51:10,006 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:51:10,006 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:51:10,219 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-07-13 19:51:10,219 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:51:10,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:51:10,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1047265, now seen corresponding path program 1 times [2021-07-13 19:51:10,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:51:10,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839675426] [2021-07-13 19:51:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:51:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:51:10,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:51:10,278 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:51:10,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839675426] [2021-07-13 19:51:10,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839675426] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:51:10,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:51:10,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 19:51:10,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418471605] [2021-07-13 19:51:10,279 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 19:51:10,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:51:10,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 19:51:10,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 19:51:10,280 INFO L87 Difference]: Start difference. First operand 80 states and 157 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:51:10,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:51:10,355 INFO L93 Difference]: Finished difference Result 134 states and 254 transitions. [2021-07-13 19:51:10,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:51:10,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-07-13 19:51:10,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:51:10,356 INFO L225 Difference]: With dead ends: 134 [2021-07-13 19:51:10,357 INFO L226 Difference]: Without dead ends: 129 [2021-07-13 19:51:10,357 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:51:10,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-07-13 19:51:10,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 100. [2021-07-13 19:51:10,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.97979797979798) internal successors, (196), 99 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:51:10,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 196 transitions. [2021-07-13 19:51:10,365 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 196 transitions. Word has length 16 [2021-07-13 19:51:10,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:51:10,365 INFO L482 AbstractCegarLoop]: Abstraction has 100 states and 196 transitions. [2021-07-13 19:51:10,365 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:51:10,365 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 196 transitions. [2021-07-13 19:51:10,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-13 19:51:10,366 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:51:10,366 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:51:10,366 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-13 19:51:10,367 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:51:10,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:51:10,367 INFO L82 PathProgramCache]: Analyzing trace with hash -2094240753, now seen corresponding path program 2 times [2021-07-13 19:51:10,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:51:10,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045094895] [2021-07-13 19:51:10,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:51:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:51:10,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:51:10,406 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:51:10,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045094895] [2021-07-13 19:51:10,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045094895] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:51:10,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:51:10,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 19:51:10,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326181934] [2021-07-13 19:51:10,407 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 19:51:10,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:51:10,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 19:51:10,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 19:51:10,408 INFO L87 Difference]: Start difference. First operand 100 states and 196 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:51:10,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:51:10,476 INFO L93 Difference]: Finished difference Result 105 states and 205 transitions. [2021-07-13 19:51:10,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:51:10,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-07-13 19:51:10,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:51:10,478 INFO L225 Difference]: With dead ends: 105 [2021-07-13 19:51:10,478 INFO L226 Difference]: Without dead ends: 105 [2021-07-13 19:51:10,478 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:51:10,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-07-13 19:51:10,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 85. [2021-07-13 19:51:10,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.9761904761904763) internal successors, (166), 84 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:51:10,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 166 transitions. [2021-07-13 19:51:10,492 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 166 transitions. Word has length 16 [2021-07-13 19:51:10,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:51:10,492 INFO L482 AbstractCegarLoop]: Abstraction has 85 states and 166 transitions. [2021-07-13 19:51:10,492 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:51:10,493 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 166 transitions. [2021-07-13 19:51:10,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-13 19:51:10,496 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:51:10,496 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:51:10,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-13 19:51:10,497 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:51:10,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:51:10,497 INFO L82 PathProgramCache]: Analyzing trace with hash -902482072, now seen corresponding path program 2 times [2021-07-13 19:51:10,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:51:10,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117738629] [2021-07-13 19:51:10,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:51:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:51:10,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:51:10,533 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:51:10,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117738629] [2021-07-13 19:51:10,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117738629] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:51:10,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:51:10,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 19:51:10,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799659364] [2021-07-13 19:51:10,534 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 19:51:10,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:51:10,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 19:51:10,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 19:51:10,535 INFO L87 Difference]: Start difference. First operand 85 states and 166 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:51:10,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:51:10,582 INFO L93 Difference]: Finished difference Result 105 states and 203 transitions. [2021-07-13 19:51:10,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:51:10,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-07-13 19:51:10,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:51:10,583 INFO L225 Difference]: With dead ends: 105 [2021-07-13 19:51:10,583 INFO L226 Difference]: Without dead ends: 103 [2021-07-13 19:51:10,584 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:51:10,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-07-13 19:51:10,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 85. [2021-07-13 19:51:10,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.9642857142857142) internal successors, (165), 84 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:51:10,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 165 transitions. [2021-07-13 19:51:10,603 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 165 transitions. Word has length 16 [2021-07-13 19:51:10,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:51:10,603 INFO L482 AbstractCegarLoop]: Abstraction has 85 states and 165 transitions. [2021-07-13 19:51:10,603 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:51:10,604 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 165 transitions. [2021-07-13 19:51:10,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-07-13 19:51:10,605 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:51:10,605 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:51:10,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-13 19:51:10,605 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:51:10,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:51:10,606 INFO L82 PathProgramCache]: Analyzing trace with hash 733312672, now seen corresponding path program 1 times [2021-07-13 19:51:10,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:51:10,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40579155] [2021-07-13 19:51:10,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:51:10,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:51:10,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-13 19:51:10,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:51:10,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40579155] [2021-07-13 19:51:10,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40579155] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:51:10,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:51:10,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 19:51:10,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596946143] [2021-07-13 19:51:10,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:51:10,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:51:10,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:51:10,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:51:10,720 INFO L87 Difference]: Start difference. First operand 85 states and 165 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:51:10,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:51:10,746 INFO L93 Difference]: Finished difference Result 138 states and 270 transitions. [2021-07-13 19:51:10,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:51:10,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-07-13 19:51:10,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:51:10,748 INFO L225 Difference]: With dead ends: 138 [2021-07-13 19:51:10,749 INFO L226 Difference]: Without dead ends: 99 [2021-07-13 19:51:10,750 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.6ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:51:10,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-07-13 19:51:10,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 87. [2021-07-13 19:51:10,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.9651162790697674) internal successors, (169), 86 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:51:10,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 169 transitions. [2021-07-13 19:51:10,755 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 169 transitions. Word has length 21 [2021-07-13 19:51:10,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:51:10,755 INFO L482 AbstractCegarLoop]: Abstraction has 87 states and 169 transitions. [2021-07-13 19:51:10,755 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:51:10,755 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 169 transitions. [2021-07-13 19:51:10,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-07-13 19:51:10,756 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:51:10,756 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:51:10,756 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-13 19:51:10,757 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:51:10,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:51:10,762 INFO L82 PathProgramCache]: Analyzing trace with hash -667355684, now seen corresponding path program 2 times [2021-07-13 19:51:10,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:51:10,763 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800002454] [2021-07-13 19:51:10,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:51:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:51:10,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:51:10,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:51:10,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800002454] [2021-07-13 19:51:10,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800002454] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:51:10,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143216328] [2021-07-13 19:51:10,866 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 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 [2021-07-13 19:51:10,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 19:51:10,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 19:51:10,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-13 19:51:10,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:51:10,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:51:10,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143216328] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:51:10,967 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:51:10,967 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-07-13 19:51:10,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196319630] [2021-07-13 19:51:10,968 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 19:51:10,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:51:10,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 19:51:10,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:51:10,969 INFO L87 Difference]: Start difference. First operand 87 states and 169 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:51:10,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:51:10,991 INFO L93 Difference]: Finished difference Result 85 states and 167 transitions. [2021-07-13 19:51:10,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-13 19:51:10,992 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-07-13 19:51:10,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:51:10,992 INFO L225 Difference]: With dead ends: 85 [2021-07-13 19:51:10,992 INFO L226 Difference]: Without dead ends: 0 [2021-07-13 19:51:10,992 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.0ms TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:51:10,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-13 19:51:10,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-13 19:51:10,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:51:10,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-13 19:51:10,993 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-07-13 19:51:10,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:51:10,993 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-13 19:51:10,993 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:51:10,993 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-13 19:51:10,993 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 19:51:11,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 19:51:11,203 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-13 19:51:11,205 INFO L202 PluginConnector]: Adding new model misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 07:51:11 BasicIcfg [2021-07-13 19:51:11,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-13 19:51:11,206 INFO L168 Benchmark]: Toolchain (without parser) took 2224.01 ms. Allocated memory is still 225.4 MB. Free memory was 205.1 MB in the beginning and 180.6 MB in the end (delta: 24.5 MB). Peak memory consumption was 25.6 MB. Max. memory is 8.0 GB. [2021-07-13 19:51:11,206 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 225.4 MB. Free memory is still 206.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 19:51:11,206 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.96 ms. Allocated memory is still 225.4 MB. Free memory was 205.1 MB in the beginning and 203.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-13 19:51:11,206 INFO L168 Benchmark]: Boogie Preprocessor took 17.87 ms. Allocated memory is still 225.4 MB. Free memory was 203.6 MB in the beginning and 202.8 MB in the end (delta: 867.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 19:51:11,207 INFO L168 Benchmark]: RCFGBuilder took 268.54 ms. Allocated memory is still 225.4 MB. Free memory was 202.6 MB in the beginning and 192.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-07-13 19:51:11,207 INFO L168 Benchmark]: TraceAbstraction took 1906.67 ms. Allocated memory is still 225.4 MB. Free memory was 191.7 MB in the beginning and 180.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.0 MB. Max. memory is 8.0 GB. [2021-07-13 19:51:11,208 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 0.11 ms. Allocated memory is still 225.4 MB. Free memory is still 206.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 25.96 ms. Allocated memory is still 225.4 MB. Free memory was 205.1 MB in the beginning and 203.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 17.87 ms. Allocated memory is still 225.4 MB. Free memory was 203.6 MB in the beginning and 202.8 MB in the end (delta: 867.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 268.54 ms. Allocated memory is still 225.4 MB. Free memory was 202.6 MB in the beginning and 192.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1906.67 ms. Allocated memory is still 225.4 MB. Free memory was 191.7 MB in the beginning and 180.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 45]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 40 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1774.8ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 16.7ms, AutomataDifference: 389.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 22.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 149 SDtfs, 127 SDslu, 249 SDs, 0 SdLazy, 181 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 161.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 159.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=3, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 88.7ms AutomataMinimizationTime, 7 MinimizatonAttempts, 128 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.4ms SsaConstructionTime, 84.0ms SatisfiabilityAnalysisTime, 518.9ms InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 663 SizeOfPredicates, 3 NumberOfNonLiveVariables, 79 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 5/11 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...