/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/POPL2022/incr-decr05.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 13:39:18,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 13:39:18,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 13:39:18,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-21 13:39:18,346 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 [2021-08-21 13:39:18,381 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 13:39:18,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 13:39:18,382 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-21 13:39:18,382 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-21 13:39:18,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 13:39:18,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 13:39:18,383 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 13:39:18,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 13:39:18,384 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 13:39:18,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 13:39:18,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 13:39:18,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 13:39:18,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 13:39:18,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 13:39:18,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 13:39:18,385 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 13:39:18,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 13:39:18,385 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 13:39:18,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 13:39:18,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 13:39:18,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 13:39:18,386 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 13:39:18,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 13:39:18,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 13:39:18,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 13:39:18,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 13:39:18,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 13:39:18,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 13:39:18,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 13:39:18,387 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 13:39:18,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 13:39:18,387 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 13:39:18,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 13:39:18,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 13:39:18,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 13:39:18,789 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-21 13:39:18,790 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-21 13:39:18,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr05.bpl [2021-08-21 13:39:18,792 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr05.bpl' [2021-08-21 13:39:18,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 13:39:18,818 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-21 13:39:18,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 13:39:18,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 13:39:18,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 13:39:18,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "incr-decr05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:39:18" (1/1) ... [2021-08-21 13:39:18,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "incr-decr05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:39:18" (1/1) ... [2021-08-21 13:39:18,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 13:39:18,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 13:39:18,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 13:39:18,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 13:39:18,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "incr-decr05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:39:18" (1/1) ... [2021-08-21 13:39:18,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "incr-decr05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:39:18" (1/1) ... [2021-08-21 13:39:18,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "incr-decr05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:39:18" (1/1) ... [2021-08-21 13:39:18,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "incr-decr05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:39:18" (1/1) ... [2021-08-21 13:39:18,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "incr-decr05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:39:18" (1/1) ... [2021-08-21 13:39:18,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "incr-decr05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:39:18" (1/1) ... [2021-08-21 13:39:18,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "incr-decr05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:39:18" (1/1) ... [2021-08-21 13:39:18,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 13:39:18,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 13:39:18,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 13:39:18,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 13:39:18,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "incr-decr05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:39:18" (1/1) ... [2021-08-21 13:39:18,889 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 13:39:18,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 13:39:18,920 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-21 13:39:18,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-21 13:39:18,961 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-21 13:39:18,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 13:39:18,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 13:39:18,961 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-08-21 13:39:18,962 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-08-21 13:39:18,962 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-08-21 13:39:18,962 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-21 13:39:19,102 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 13:39:19,103 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-21 13:39:19,105 INFO L202 PluginConnector]: Adding new model incr-decr05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:39:19 BoogieIcfgContainer [2021-08-21 13:39:19,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 13:39:19,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 13:39:19,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 13:39:19,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 13:39:19,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:39:18" (1/2) ... [2021-08-21 13:39:19,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c432229 and model type incr-decr05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:39:19, skipping insertion in model container [2021-08-21 13:39:19,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:39:19" (2/2) ... [2021-08-21 13:39:19,113 INFO L111 eAbstractionObserver]: Analyzing ICFG incr-decr05.bpl [2021-08-21 13:39:19,125 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 13:39:19,126 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 13:39:19,126 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 13:39:19,127 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 13:39:19,259 INFO L148 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-08-21 13:39:19,296 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 13:39:19,302 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-21 13:39:19,302 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-21 13:39:19,311 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 34 transitions, 108 flow [2021-08-21 13:39:19,414 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 487 states, 486 states have (on average 4.755144032921811) internal successors, (2311), 486 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:19,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 487 states, 486 states have (on average 4.755144032921811) internal successors, (2311), 486 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:19,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-21 13:39:19,444 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:19,445 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:19,445 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 13:39:19,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:19,455 INFO L82 PathProgramCache]: Analyzing trace with hash -478708764, now seen corresponding path program 1 times [2021-08-21 13:39:19,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:19,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102270284] [2021-08-21 13:39:19,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:19,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:19,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:19,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:19,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102270284] [2021-08-21 13:39:19,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102270284] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:19,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:19,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-21 13:39:19,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978707791] [2021-08-21 13:39:19,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 13:39:19,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:19,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 13:39:19,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 13:39:19,686 INFO L87 Difference]: Start difference. First operand has 487 states, 486 states have (on average 4.755144032921811) internal successors, (2311), 486 states have internal predecessors, (2311), 0 states have call successors, (0), 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, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:19,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:19,787 INFO L93 Difference]: Finished difference Result 580 states and 2728 transitions. [2021-08-21 13:39:19,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 13:39:19,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-08-21 13:39:19,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:19,817 INFO L225 Difference]: With dead ends: 580 [2021-08-21 13:39:19,818 INFO L226 Difference]: Without dead ends: 574 [2021-08-21 13:39:19,819 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 13:39:19,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-08-21 13:39:19,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 574. [2021-08-21 13:39:19,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 573 states have (on average 4.726003490401396) internal successors, (2708), 573 states have internal predecessors, (2708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:19,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 2708 transitions. [2021-08-21 13:39:19,928 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 2708 transitions. Word has length 17 [2021-08-21 13:39:19,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:19,929 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 2708 transitions. [2021-08-21 13:39:19,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:19,930 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 2708 transitions. [2021-08-21 13:39:19,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-21 13:39:19,934 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:19,934 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:19,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 13:39:19,935 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 13:39:19,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:19,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1754251386, now seen corresponding path program 1 times [2021-08-21 13:39:19,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:19,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115684056] [2021-08-21 13:39:19,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:19,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:20,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 13:39:20,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:20,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115684056] [2021-08-21 13:39:20,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115684056] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:20,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:20,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-21 13:39:20,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871334882] [2021-08-21 13:39:20,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-21 13:39:20,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:20,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-21 13:39:20,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-21 13:39:20,046 INFO L87 Difference]: Start difference. First operand 574 states and 2708 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:20,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:20,104 INFO L93 Difference]: Finished difference Result 842 states and 3963 transitions. [2021-08-21 13:39:20,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-21 13:39:20,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-08-21 13:39:20,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:20,113 INFO L225 Difference]: With dead ends: 842 [2021-08-21 13:39:20,114 INFO L226 Difference]: Without dead ends: 789 [2021-08-21 13:39:20,115 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.3ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-21 13:39:20,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2021-08-21 13:39:20,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 718. [2021-08-21 13:39:20,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 717 states have (on average 4.7573221757322175) internal successors, (3411), 717 states have internal predecessors, (3411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:20,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 3411 transitions. [2021-08-21 13:39:20,162 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 3411 transitions. Word has length 19 [2021-08-21 13:39:20,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:20,162 INFO L470 AbstractCegarLoop]: Abstraction has 718 states and 3411 transitions. [2021-08-21 13:39:20,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:20,163 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 3411 transitions. [2021-08-21 13:39:20,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-21 13:39:20,166 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:20,166 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:20,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 13:39:20,166 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 13:39:20,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:20,167 INFO L82 PathProgramCache]: Analyzing trace with hash 555186564, now seen corresponding path program 1 times [2021-08-21 13:39:20,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:20,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189604345] [2021-08-21 13:39:20,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:20,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:20,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:20,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:20,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189604345] [2021-08-21 13:39:20,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189604345] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 13:39:20,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816170354] [2021-08-21 13:39:20,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:20,264 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 13:39:20,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 13:39:20,281 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 13:39:20,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-21 13:39:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:20,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-21 13:39:20,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 13:39:20,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:20,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816170354] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 13:39:20,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 13:39:20,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-08-21 13:39:20,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369546438] [2021-08-21 13:39:20,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-21 13:39:20,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:20,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-21 13:39:20,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-21 13:39:20,620 INFO L87 Difference]: Start difference. First operand 718 states and 3411 transitions. Second operand has 5 states, 4 states have (on average 5.25) 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) [2021-08-21 13:39:20,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:20,739 INFO L93 Difference]: Finished difference Result 1119 states and 5333 transitions. [2021-08-21 13:39:20,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-21 13:39:20,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) 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 [2021-08-21 13:39:20,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:20,758 INFO L225 Difference]: With dead ends: 1119 [2021-08-21 13:39:20,759 INFO L226 Difference]: Without dead ends: 924 [2021-08-21 13:39:20,759 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.6ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-21 13:39:20,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2021-08-21 13:39:20,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 762. [2021-08-21 13:39:20,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 761 states have (on average 4.8015768725361365) internal successors, (3654), 761 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:20,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 3654 transitions. [2021-08-21 13:39:20,804 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 3654 transitions. Word has length 21 [2021-08-21 13:39:20,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:20,805 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 3654 transitions. [2021-08-21 13:39:20,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) 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) [2021-08-21 13:39:20,806 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 3654 transitions. [2021-08-21 13:39:20,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-21 13:39:20,809 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:20,810 INFO L512 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] [2021-08-21 13:39:20,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-21 13:39:21,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 13:39:21,025 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 13:39:21,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:21,026 INFO L82 PathProgramCache]: Analyzing trace with hash -71809336, now seen corresponding path program 1 times [2021-08-21 13:39:21,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:21,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347008256] [2021-08-21 13:39:21,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:21,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:21,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 13:39:21,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:21,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347008256] [2021-08-21 13:39:21,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347008256] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 13:39:21,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908135174] [2021-08-21 13:39:21,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:21,128 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 13:39:21,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 13:39:21,129 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 13:39:21,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-21 13:39:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:21,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-21 13:39:21,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 13:39:21,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 13:39:21,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908135174] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 13:39:21,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 13:39:21,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-08-21 13:39:21,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397624224] [2021-08-21 13:39:21,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 13:39:21,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:21,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 13:39:21,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 13:39:21,495 INFO L87 Difference]: Start difference. First operand 762 states and 3654 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:21,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:21,638 INFO L93 Difference]: Finished difference Result 1194 states and 5756 transitions. [2021-08-21 13:39:21,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-21 13:39:21,638 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-08-21 13:39:21,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:21,647 INFO L225 Difference]: With dead ends: 1194 [2021-08-21 13:39:21,648 INFO L226 Difference]: Without dead ends: 782 [2021-08-21 13:39:21,648 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.3ms TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 13:39:21,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2021-08-21 13:39:21,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 642. [2021-08-21 13:39:21,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 4.828393135725429) internal successors, (3095), 641 states have internal predecessors, (3095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:21,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 3095 transitions. [2021-08-21 13:39:21,679 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 3095 transitions. Word has length 23 [2021-08-21 13:39:21,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:21,680 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 3095 transitions. [2021-08-21 13:39:21,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:21,680 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 3095 transitions. [2021-08-21 13:39:21,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-21 13:39:21,683 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:21,683 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:21,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-21 13:39:21,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-08-21 13:39:21,909 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 13:39:21,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:21,909 INFO L82 PathProgramCache]: Analyzing trace with hash -584854870, now seen corresponding path program 1 times [2021-08-21 13:39:21,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:21,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678401024] [2021-08-21 13:39:21,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:21,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:22,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-21 13:39:22,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:22,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678401024] [2021-08-21 13:39:22,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678401024] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 13:39:22,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697525896] [2021-08-21 13:39:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:22,060 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 13:39:22,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 13:39:22,061 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 13:39:22,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-21 13:39:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:22,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-21 13:39:22,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 13:39:22,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-21 13:39:22,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697525896] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 13:39:22,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 13:39:22,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-08-21 13:39:22,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986250932] [2021-08-21 13:39:22,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 13:39:22,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:22,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 13:39:22,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 13:39:22,517 INFO L87 Difference]: Start difference. First operand 642 states and 3095 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:22,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:22,703 INFO L93 Difference]: Finished difference Result 1005 states and 4852 transitions. [2021-08-21 13:39:22,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 13:39:22,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-21 13:39:22,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:22,708 INFO L225 Difference]: With dead ends: 1005 [2021-08-21 13:39:22,708 INFO L226 Difference]: Without dead ends: 469 [2021-08-21 13:39:22,709 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.0ms TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 13:39:22,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-08-21 13:39:22,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 428. [2021-08-21 13:39:22,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 4.796252927400468) internal successors, (2048), 427 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:22,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 2048 transitions. [2021-08-21 13:39:22,728 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 2048 transitions. Word has length 25 [2021-08-21 13:39:22,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:22,729 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 2048 transitions. [2021-08-21 13:39:22,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:22,729 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 2048 transitions. [2021-08-21 13:39:22,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-21 13:39:22,731 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:22,731 INFO L512 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] [2021-08-21 13:39:22,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-21 13:39:22,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 13:39:22,947 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 13:39:22,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:22,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1185500760, now seen corresponding path program 1 times [2021-08-21 13:39:22,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:22,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665997852] [2021-08-21 13:39:22,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:22,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:23,076 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-21 13:39:23,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:23,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665997852] [2021-08-21 13:39:23,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665997852] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 13:39:23,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162931451] [2021-08-21 13:39:23,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:23,077 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 13:39:23,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 13:39:23,078 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 13:39:23,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-21 13:39:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:23,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-21 13:39:23,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 13:39:23,379 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-21 13:39:23,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162931451] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 13:39:23,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 13:39:23,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-08-21 13:39:23,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127251032] [2021-08-21 13:39:23,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 13:39:23,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:23,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 13:39:23,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-21 13:39:23,381 INFO L87 Difference]: Start difference. First operand 428 states and 2048 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 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) [2021-08-21 13:39:23,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:23,580 INFO L93 Difference]: Finished difference Result 427 states and 2047 transitions. [2021-08-21 13:39:23,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 13:39:23,582 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 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 [2021-08-21 13:39:23,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:23,582 INFO L225 Difference]: With dead ends: 427 [2021-08-21 13:39:23,582 INFO L226 Difference]: Without dead ends: 0 [2021-08-21 13:39:23,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.1ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-21 13:39:23,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-21 13:39:23,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-21 13:39:23,583 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) [2021-08-21 13:39:23,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-21 13:39:23,583 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2021-08-21 13:39:23,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:23,585 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-21 13:39:23,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 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) [2021-08-21 13:39:23,585 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-21 13:39:23,585 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-21 13:39:23,590 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT [2021-08-21 13:39:23,590 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 13:39:23,591 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 13:39:23,591 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 13:39:23,591 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-08-21 13:39:23,591 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATION [2021-08-21 13:39:23,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-08-21 13:39:23,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 13:39:23,811 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 13:39:23,811 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 13:39:23,813 INFO L202 PluginConnector]: Adding new model incr-decr05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:39:23 BasicIcfg [2021-08-21 13:39:23,813 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 13:39:23,814 INFO L168 Benchmark]: Toolchain (without parser) took 4996.36 ms. Allocated memory was 184.5 MB in the beginning and 224.4 MB in the end (delta: 39.8 MB). Free memory was 165.1 MB in the beginning and 119.0 MB in the end (delta: 46.2 MB). Peak memory consumption was 86.8 MB. Max. memory is 8.0 GB. [2021-08-21 13:39:23,815 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.17 ms. Allocated memory is still 184.5 MB. Free memory is still 166.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 13:39:23,815 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.12 ms. Allocated memory is still 184.5 MB. Free memory was 165.0 MB in the beginning and 163.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 13:39:23,815 INFO L168 Benchmark]: Boogie Preprocessor took 18.74 ms. Allocated memory is still 184.5 MB. Free memory was 163.6 MB in the beginning and 162.7 MB in the end (delta: 917.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-21 13:39:23,816 INFO L168 Benchmark]: RCFGBuilder took 227.56 ms. Allocated memory is still 184.5 MB. Free memory was 162.5 MB in the beginning and 153.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-08-21 13:39:23,816 INFO L168 Benchmark]: TraceAbstraction took 4705.62 ms. Allocated memory was 184.5 MB in the beginning and 224.4 MB in the end (delta: 39.8 MB). Free memory was 152.8 MB in the beginning and 119.0 MB in the end (delta: 33.9 MB). Peak memory consumption was 74.2 MB. Max. memory is 8.0 GB. [2021-08-21 13:39:23,818 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 0.17 ms. Allocated memory is still 184.5 MB. Free memory is still 166.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 38.12 ms. Allocated memory is still 184.5 MB. Free memory was 165.0 MB in the beginning and 163.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 18.74 ms. Allocated memory is still 184.5 MB. Free memory was 163.6 MB in the beginning and 162.7 MB in the end (delta: 917.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 227.56 ms. Allocated memory is still 184.5 MB. Free memory was 162.5 MB in the beginning and 153.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4705.62 ms. Allocated memory was 184.5 MB in the beginning and 224.4 MB in the end (delta: 39.8 MB). Free memory was 152.8 MB in the beginning and 119.0 MB in the end (delta: 33.9 MB). Peak memory consumption was 74.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 38 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 4516.3ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 45.5ms, AutomataDifference: 912.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 111.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 256 SDtfs, 150 SDslu, 763 SDs, 0 SdLazy, 840 SolverSat, 120 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 471.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 98 SyntacticMatches, 9 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 165.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=762occurred in iteration=3, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 240.3ms AutomataMinimizationTime, 6 MinimizatonAttempts, 414 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 47.5ms SsaConstructionTime, 136.6ms SatisfiabilityAnalysisTime, 1607.4ms InterpolantComputationTime, 228 NumberOfCodeBlocks, 228 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 218 ConstructedInterpolants, 0 QuantifiedInterpolants, 1462 SizeOfPredicates, 0 NumberOfNonLiveVariables, 336 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 11/29 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! [2021-08-21 13:39:23,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...