/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/popl20-more/vector-add.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 17:03:09,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 17:03:09,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 17:03:09,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-15 17:03:09,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 17:03:09,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 17:03:09,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 17:03:09,870 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 [2022-03-15 17:03:09,900 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 17:03:09,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 17:03:09,900 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-15 17:03:09,901 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-15 17:03:09,901 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 17:03:09,901 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 17:03:09,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 17:03:09,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 17:03:09,902 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 17:03:09,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 17:03:09,903 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 17:03:09,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 17:03:09,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 17:03:09,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 17:03:09,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 17:03:09,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 17:03:09,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 17:03:09,904 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 17:03:09,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 17:03:09,904 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 17:03:09,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 17:03:09,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 17:03:09,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 17:03:09,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 17:03:09,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 17:03:09,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 17:03:09,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 17:03:09,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-15 17:03:09,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 17:03:09,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 17:03:09,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 17:03:09,906 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-15 17:03:09,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 17:03:09,907 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 17:03:10,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 17:03:10,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 17:03:10,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 17:03:10,140 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 17:03:10,144 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 17:03:10,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/vector-add.wvr.bpl [2022-03-15 17:03:10,145 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/vector-add.wvr.bpl' [2022-03-15 17:03:10,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 17:03:10,167 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 17:03:10,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 17:03:10,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 17:03:10,175 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 17:03:10,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 05:03:10" (1/1) ... [2022-03-15 17:03:10,190 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 05:03:10" (1/1) ... [2022-03-15 17:03:10,200 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 17:03:10,201 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 17:03:10,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 17:03:10,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 17:03:10,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 17:03:10,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 05:03:10" (1/1) ... [2022-03-15 17:03:10,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 05:03:10" (1/1) ... [2022-03-15 17:03:10,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 05:03:10" (1/1) ... [2022-03-15 17:03:10,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 05:03:10" (1/1) ... [2022-03-15 17:03:10,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 05:03:10" (1/1) ... [2022-03-15 17:03:10,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 05:03:10" (1/1) ... [2022-03-15 17:03:10,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 05:03:10" (1/1) ... [2022-03-15 17:03:10,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 17:03:10,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 17:03:10,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 17:03:10,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 17:03:10,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 05:03:10" (1/1) ... [2022-03-15 17:03:10,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 17:03:10,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:03:10,259 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) [2022-03-15 17:03:10,288 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 [2022-03-15 17:03:10,296 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-15 17:03:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 17:03:10,296 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 17:03:10,296 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-15 17:03:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 17:03:10,296 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 17:03:10,296 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 17:03:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 17:03:10,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 17:03:10,297 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-03-15 17:03:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-15 17:03:10,297 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-15 17:03:10,297 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 17:03:10,343 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 17:03:10,344 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 17:03:10,444 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 17:03:10,457 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 17:03:10,458 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-15 17:03:10,465 INFO L202 PluginConnector]: Adding new model vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 05:03:10 BoogieIcfgContainer [2022-03-15 17:03:10,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 17:03:10,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 17:03:10,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 17:03:10,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 17:03:10,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 05:03:10" (1/2) ... [2022-03-15 17:03:10,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac80d9b and model type vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 05:03:10, skipping insertion in model container [2022-03-15 17:03:10,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 05:03:10" (2/2) ... [2022-03-15 17:03:10,472 INFO L111 eAbstractionObserver]: Analyzing ICFG vector-add.wvr.bpl [2022-03-15 17:03:10,476 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 17:03:10,477 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-15 17:03:10,477 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 17:03:10,477 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 17:03:10,515 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-03-15 17:03:10,585 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 17:03:10,592 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, 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, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 17:03:10,592 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-15 17:03:10,600 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 30 transitions, 84 flow [2022-03-15 17:03:10,649 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 113 states, 112 states have (on average 2.794642857142857) internal successors, (313), 112 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:03:10,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 112 states have (on average 2.794642857142857) internal successors, (313), 112 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:03:10,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 17:03:10,658 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:03:10,658 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:03:10,659 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 17:03:10,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:03:10,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1297405176, now seen corresponding path program 1 times [2022-03-15 17:03:10,669 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:03:10,670 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341046735] [2022-03-15 17:03:10,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:03:10,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:03:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:03:10,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:03:10,790 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:03:10,791 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341046735] [2022-03-15 17:03:10,791 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341046735] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 17:03:10,791 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 17:03:10,791 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 17:03:10,793 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139125396] [2022-03-15 17:03:10,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 17:03:10,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 17:03:10,796 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:03:10,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 17:03:10,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 17:03:10,834 INFO L87 Difference]: Start difference. First operand has 113 states, 112 states have (on average 2.794642857142857) internal successors, (313), 112 states have internal predecessors, (313), 0 states have call successors, (0), 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 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) [2022-03-15 17:03:10,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:03:10,875 INFO L93 Difference]: Finished difference Result 218 states and 618 transitions. [2022-03-15 17:03:10,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 17:03:10,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2022-03-15 17:03:10,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:03:10,891 INFO L225 Difference]: With dead ends: 218 [2022-03-15 17:03:10,892 INFO L226 Difference]: Without dead ends: 203 [2022-03-15 17:03:10,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 17:03:10,896 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:03:10,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 30 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:03:10,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-03-15 17:03:10,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 150. [2022-03-15 17:03:10,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.8187919463087248) internal successors, (420), 149 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:03:10,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 420 transitions. [2022-03-15 17:03:10,973 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 420 transitions. Word has length 19 [2022-03-15 17:03:10,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:03:10,974 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 420 transitions. [2022-03-15 17:03:10,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-03-15 17:03:10,975 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 420 transitions. [2022-03-15 17:03:10,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 17:03:10,976 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:03:10,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:03:10,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 17:03:10,977 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 17:03:10,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:03:10,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1269093864, now seen corresponding path program 1 times [2022-03-15 17:03:10,978 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:03:10,978 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132073008] [2022-03-15 17:03:10,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:03:10,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:03:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:03:11,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 17:03:11,033 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:03:11,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132073008] [2022-03-15 17:03:11,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132073008] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 17:03:11,033 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 17:03:11,033 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 17:03:11,033 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048156453] [2022-03-15 17:03:11,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 17:03:11,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 17:03:11,035 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:03:11,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 17:03:11,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-15 17:03:11,036 INFO L87 Difference]: Start difference. First operand 150 states and 420 transitions. Second operand has 4 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) [2022-03-15 17:03:11,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:03:11,086 INFO L93 Difference]: Finished difference Result 159 states and 446 transitions. [2022-03-15 17:03:11,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 17:03:11,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 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 [2022-03-15 17:03:11,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:03:11,088 INFO L225 Difference]: With dead ends: 159 [2022-03-15 17:03:11,088 INFO L226 Difference]: Without dead ends: 159 [2022-03-15 17:03:11,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-15 17:03:11,091 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 35 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:03:11,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 16 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:03:11,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-03-15 17:03:11,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 134. [2022-03-15 17:03:11,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 2.819548872180451) internal successors, (375), 133 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:03:11,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 375 transitions. [2022-03-15 17:03:11,108 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 375 transitions. Word has length 21 [2022-03-15 17:03:11,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:03:11,108 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 375 transitions. [2022-03-15 17:03:11,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2022-03-15 17:03:11,109 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 375 transitions. [2022-03-15 17:03:11,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 17:03:11,110 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:03:11,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:03:11,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 17:03:11,111 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 17:03:11,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:03:11,111 INFO L85 PathProgramCache]: Analyzing trace with hash 339990742, now seen corresponding path program 1 times [2022-03-15 17:03:11,111 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:03:11,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915681385] [2022-03-15 17:03:11,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:03:11,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:03:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:03:11,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 17:03:11,173 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:03:11,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915681385] [2022-03-15 17:03:11,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915681385] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 17:03:11,174 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 17:03:11,174 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 17:03:11,174 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311467588] [2022-03-15 17:03:11,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 17:03:11,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 17:03:11,175 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:03:11,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 17:03:11,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-15 17:03:11,176 INFO L87 Difference]: Start difference. First operand 134 states and 375 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) [2022-03-15 17:03:11,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:03:11,258 INFO L93 Difference]: Finished difference Result 184 states and 523 transitions. [2022-03-15 17:03:11,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 17:03:11,259 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 [2022-03-15 17:03:11,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:03:11,260 INFO L225 Difference]: With dead ends: 184 [2022-03-15 17:03:11,260 INFO L226 Difference]: Without dead ends: 184 [2022-03-15 17:03:11,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-15 17:03:11,262 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 78 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:03:11,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 14 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:03:11,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-03-15 17:03:11,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 159. [2022-03-15 17:03:11,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 2.8417721518987342) internal successors, (449), 158 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:03:11,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 449 transitions. [2022-03-15 17:03:11,274 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 449 transitions. Word has length 21 [2022-03-15 17:03:11,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:03:11,274 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 449 transitions. [2022-03-15 17:03:11,274 INFO L471 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) [2022-03-15 17:03:11,274 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 449 transitions. [2022-03-15 17:03:11,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-15 17:03:11,276 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:03:11,276 INFO L514 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] [2022-03-15 17:03:11,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 17:03:11,276 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 17:03:11,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:03:11,277 INFO L85 PathProgramCache]: Analyzing trace with hash -754358794, now seen corresponding path program 1 times [2022-03-15 17:03:11,277 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:03:11,277 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258230062] [2022-03-15 17:03:11,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:03:11,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:03:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:03:11,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:03:11,624 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:03:11,624 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258230062] [2022-03-15 17:03:11,624 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258230062] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:03:11,624 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648197982] [2022-03-15 17:03:11,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:03:11,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:03:11,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:03:11,631 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) [2022-03-15 17:03:11,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-15 17:03:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:03:11,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-15 17:03:11,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:03:12,000 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2022-03-15 17:03:12,002 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-03-15 17:03:12,011 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2022-03-15 17:03:12,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:03:12,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:03:12,121 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 17:03:12,122 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2022-03-15 17:03:12,131 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 17:03:12,132 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-03-15 17:03:12,673 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2022-03-15 17:03:12,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:03:12,758 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648197982] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:03:12,758 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:03:12,758 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-15 17:03:12,759 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440289345] [2022-03-15 17:03:12,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 17:03:12,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 17:03:12,759 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:03:12,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 17:03:12,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-03-15 17:03:12,760 INFO L87 Difference]: Start difference. First operand 159 states and 449 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:03:13,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:03:13,215 INFO L93 Difference]: Finished difference Result 408 states and 1166 transitions. [2022-03-15 17:03:13,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 17:03:13,216 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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 [2022-03-15 17:03:13,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:03:13,219 INFO L225 Difference]: With dead ends: 408 [2022-03-15 17:03:13,219 INFO L226 Difference]: Without dead ends: 393 [2022-03-15 17:03:13,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2022-03-15 17:03:13,221 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 384 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 17:03:13,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 83 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 317 Invalid, 0 Unknown, 9 Unchecked, 0.2s Time] [2022-03-15 17:03:13,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-03-15 17:03:13,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 249. [2022-03-15 17:03:13,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 2.907258064516129) internal successors, (721), 248 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:03:13,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 721 transitions. [2022-03-15 17:03:13,247 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 721 transitions. Word has length 23 [2022-03-15 17:03:13,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:03:13,247 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 721 transitions. [2022-03-15 17:03:13,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:03:13,247 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 721 transitions. [2022-03-15 17:03:13,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-15 17:03:13,253 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:03:13,253 INFO L514 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] [2022-03-15 17:03:13,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-15 17:03:13,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:03:13,477 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 17:03:13,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:03:13,478 INFO L85 PathProgramCache]: Analyzing trace with hash -922167886, now seen corresponding path program 2 times [2022-03-15 17:03:13,478 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:03:13,478 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318478850] [2022-03-15 17:03:13,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:03:13,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:03:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:03:13,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:03:13,708 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:03:13,708 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318478850] [2022-03-15 17:03:13,708 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318478850] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:03:13,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227463623] [2022-03-15 17:03:13,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:03:13,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:03:13,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:03:13,710 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) [2022-03-15 17:03:13,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-15 17:03:13,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:03:13,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:03:13,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-15 17:03:13,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:03:13,930 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 17:03:13,930 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 29 [2022-03-15 17:03:13,942 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 17:03:13,943 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2022-03-15 17:03:13,949 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-03-15 17:03:14,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:03:14,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:03:14,163 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 17:03:14,163 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2022-03-15 17:03:14,171 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 17:03:14,171 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-03-15 17:03:17,587 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2022-03-15 17:03:17,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:03:17,684 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227463623] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:03:17,684 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:03:17,684 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 22 [2022-03-15 17:03:17,685 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259584488] [2022-03-15 17:03:17,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 17:03:17,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 17:03:17,685 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:03:17,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 17:03:17,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=392, Unknown=2, NotChecked=0, Total=462 [2022-03-15 17:03:17,686 INFO L87 Difference]: Start difference. First operand 249 states and 721 transitions. Second operand has 22 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 22 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:03:20,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:03:20,509 INFO L93 Difference]: Finished difference Result 630 states and 1817 transitions. [2022-03-15 17:03:20,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 17:03:20,509 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 22 states have internal predecessors, (59), 0 states have call successors, (0), 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 [2022-03-15 17:03:20,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:03:20,510 INFO L225 Difference]: With dead ends: 630 [2022-03-15 17:03:20,510 INFO L226 Difference]: Without dead ends: 0 [2022-03-15 17:03:20,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=294, Invalid=1185, Unknown=3, NotChecked=0, Total=1482 [2022-03-15 17:03:20,511 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 433 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 287 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 17:03:20,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 168 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 521 Invalid, 0 Unknown, 287 Unchecked, 0.3s Time] [2022-03-15 17:03:20,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-15 17:03:20,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-15 17:03:20,512 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) [2022-03-15 17:03:20,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-15 17:03:20,512 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2022-03-15 17:03:20,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:03:20,512 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-15 17:03:20,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 22 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:03:20,513 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-15 17:03:20,513 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-15 17:03:20,514 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-03-15 17:03:20,515 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-03-15 17:03:20,515 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-03-15 17:03:20,515 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-03-15 17:03:20,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-15 17:03:20,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:03:20,730 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-03-15 17:03:20,732 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 17:03:20,732 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 17:03:20,734 INFO L202 PluginConnector]: Adding new model vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 05:03:20 BasicIcfg [2022-03-15 17:03:20,734 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 17:03:20,735 INFO L158 Benchmark]: Toolchain (without parser) took 10567.88ms. Allocated memory was 187.7MB in the beginning and 287.3MB in the end (delta: 99.6MB). Free memory was 145.8MB in the beginning and 166.4MB in the end (delta: -20.6MB). Peak memory consumption was 81.4MB. Max. memory is 8.0GB. [2022-03-15 17:03:20,735 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.14ms. Allocated memory is still 187.7MB. Free memory was 146.9MB in the beginning and 146.9MB in the end (delta: 76.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 17:03:20,735 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.05ms. Allocated memory is still 187.7MB. Free memory was 145.7MB in the beginning and 144.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 17:03:20,736 INFO L158 Benchmark]: Boogie Preprocessor took 24.58ms. Allocated memory is still 187.7MB. Free memory was 144.2MB in the beginning and 143.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 17:03:20,736 INFO L158 Benchmark]: RCFGBuilder took 236.74ms. Allocated memory is still 187.7MB. Free memory was 143.1MB in the beginning and 133.5MB in the end (delta: 9.6MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-15 17:03:20,736 INFO L158 Benchmark]: TraceAbstraction took 10267.34ms. Allocated memory was 187.7MB in the beginning and 287.3MB in the end (delta: 99.6MB). Free memory was 133.0MB in the beginning and 166.4MB in the end (delta: -33.3MB). Peak memory consumption was 66.7MB. Max. memory is 8.0GB. [2022-03-15 17:03:20,739 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 0.14ms. Allocated memory is still 187.7MB. Free memory was 146.9MB in the beginning and 146.9MB in the end (delta: 76.2kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.05ms. Allocated memory is still 187.7MB. Free memory was 145.7MB in the beginning and 144.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.58ms. Allocated memory is still 187.7MB. Free memory was 144.2MB in the beginning and 143.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 236.74ms. Allocated memory is still 187.7MB. Free memory was 143.1MB in the beginning and 133.5MB in the end (delta: 9.6MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 10267.34ms. Allocated memory was 187.7MB in the beginning and 287.3MB in the end (delta: 99.6MB). Free memory was 133.0MB in the beginning and 166.4MB in the end (delta: -33.3MB). Peak memory consumption was 66.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 67]: 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, 43 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 10.1s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 933 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 933 mSDsluCounter, 311 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 296 IncrementalHoareTripleChecker+Unchecked, 460 mSDsCounter, 114 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 917 IncrementalHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 114 mSolverCounterUnsat, 62 mSDtfsCounter, 917 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 71 SyntacticMatches, 5 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=249occurred in iteration=4, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 247 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 153 NumberOfCodeBlocks, 153 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 190 ConstructedInterpolants, 18 QuantifiedInterpolants, 2085 SizeOfPredicates, 26 NumberOfNonLiveVariables, 110 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 2/14 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! [2022-03-15 17:03:20,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...