/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/example_unnecessary_interleavings.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 20:34:43,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 20:34:43,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 20:34:43,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-15 20:34:43,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 20:34:43,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 20:34:43,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 20:34:43,339 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 20:34:43,368 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 20:34:43,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 20:34:43,370 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 20:34:43,370 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 20:34:43,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 20:34:43,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 20:34:43,370 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 20:34:43,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 20:34:43,371 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 20:34:43,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 20:34:43,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 20:34:43,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 20:34:43,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 20:34:43,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 20:34:43,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 20:34:43,372 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 20:34:43,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 20:34:43,372 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 20:34:43,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 20:34:43,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 20:34:43,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 20:34:43,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 20:34:43,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 20:34:43,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 20:34:43,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 20:34:43,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 20:34:43,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 20:34:43,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 20:34:43,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 20:34:43,374 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 20:34:43,374 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 20:34:43,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 20:34:43,374 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 20:34:43,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 20:34:43,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 20:34:43,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 20:34:43,638 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 20:34:43,639 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 20:34:43,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example_unnecessary_interleavings.bpl [2022-03-15 20:34:43,641 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example_unnecessary_interleavings.bpl' [2022-03-15 20:34:43,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 20:34:43,660 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 20:34:43,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 20:34:43,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 20:34:43,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 20:34:43,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_unnecessary_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:34:43" (1/1) ... [2022-03-15 20:34:43,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_unnecessary_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:34:43" (1/1) ... [2022-03-15 20:34:43,683 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 20:34:43,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 20:34:43,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 20:34:43,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 20:34:43,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 20:34:43,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_unnecessary_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:34:43" (1/1) ... [2022-03-15 20:34:43,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_unnecessary_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:34:43" (1/1) ... [2022-03-15 20:34:43,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_unnecessary_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:34:43" (1/1) ... [2022-03-15 20:34:43,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_unnecessary_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:34:43" (1/1) ... [2022-03-15 20:34:43,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_unnecessary_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:34:43" (1/1) ... [2022-03-15 20:34:43,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_unnecessary_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:34:43" (1/1) ... [2022-03-15 20:34:43,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_unnecessary_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:34:43" (1/1) ... [2022-03-15 20:34:43,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 20:34:43,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 20:34:43,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 20:34:43,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 20:34:43,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_unnecessary_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:34:43" (1/1) ... [2022-03-15 20:34:43,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 20:34:43,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:34:43,732 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 20:34:43,755 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 20:34:43,772 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_y given in one single declaration [2022-03-15 20:34:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure set_y [2022-03-15 20:34:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure set_y [2022-03-15 20:34:43,772 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_z given in one single declaration [2022-03-15 20:34:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure set_z [2022-03-15 20:34:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure set_z [2022-03-15 20:34:43,773 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 20:34:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 20:34:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 20:34:43,773 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_x given in one single declaration [2022-03-15 20:34:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure set_x [2022-03-15 20:34:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure set_x [2022-03-15 20:34:43,774 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 20:34:43,810 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 20:34:43,811 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 20:34:43,869 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 20:34:43,876 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 20:34:43,878 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-15 20:34:43,881 INFO L202 PluginConnector]: Adding new model example_unnecessary_interleavings.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 08:34:43 BoogieIcfgContainer [2022-03-15 20:34:43,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 20:34:43,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 20:34:43,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 20:34:43,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 20:34:43,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_unnecessary_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:34:43" (1/2) ... [2022-03-15 20:34:43,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20986f8 and model type example_unnecessary_interleavings.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 08:34:43, skipping insertion in model container [2022-03-15 20:34:43,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_unnecessary_interleavings.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 08:34:43" (2/2) ... [2022-03-15 20:34:43,890 INFO L111 eAbstractionObserver]: Analyzing ICFG example_unnecessary_interleavings.bpl [2022-03-15 20:34:43,898 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 20:34:43,898 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 20:34:43,899 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 20:34:43,899 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 20:34:43,948 INFO L148 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2022-03-15 20:34:43,997 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 20:34:44,005 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, 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=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 20:34:44,006 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-15 20:34:44,018 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 20:34:44,027 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 25 transitions, 92 flow [2022-03-15 20:34:44,034 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 25 transitions, 92 flow [2022-03-15 20:34:44,035 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 25 transitions, 92 flow [2022-03-15 20:34:44,066 INFO L129 PetriNetUnfolder]: 5/25 cut-off events. [2022-03-15 20:34:44,066 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-03-15 20:34:44,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 25 events. 5/25 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 20. Up to 6 conditions per place. [2022-03-15 20:34:44,072 INFO L116 LiptonReduction]: Number of co-enabled transitions 84 [2022-03-15 20:34:44,143 INFO L131 LiptonReduction]: Checked pairs total: 90 [2022-03-15 20:34:44,144 INFO L133 LiptonReduction]: Total number of compositions: 4 [2022-03-15 20:34:44,178 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 21 transitions, 84 flow [2022-03-15 20:34:44,199 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 36 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 35 states have internal predecessors, (68), 0 states have call successors, (0), 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 20:34:44,201 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 35 states have internal predecessors, (68), 0 states have call successors, (0), 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 20:34:44,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-15 20:34:44,205 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:34:44,205 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:34:44,206 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 20:34:44,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:34:44,226 INFO L85 PathProgramCache]: Analyzing trace with hash 348537827, now seen corresponding path program 1 times [2022-03-15 20:34:44,250 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:34:44,252 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25834569] [2022-03-15 20:34:44,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:34:44,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:34:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:34:44,393 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 20:34:44,394 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:34:44,394 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25834569] [2022-03-15 20:34:44,394 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25834569] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:34:44,395 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:34:44,395 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 20:34:44,396 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1584080909] [2022-03-15 20:34:44,397 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:34:44,399 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:34:44,411 INFO L252 McrAutomatonBuilder]: Finished intersection with 24 states and 38 transitions. [2022-03-15 20:34:44,411 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:34:44,550 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 20:34:44,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 20:34:44,551 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:34:44,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 20:34:44,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 20:34:44,578 INFO L87 Difference]: Start difference. First operand has 36 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 35 states have internal predecessors, (68), 0 states have call successors, (0), 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 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 20:34:44,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:34:44,603 INFO L93 Difference]: Finished difference Result 28 states and 48 transitions. [2022-03-15 20:34:44,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 20:34:44,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-03-15 20:34:44,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:34:44,610 INFO L225 Difference]: With dead ends: 28 [2022-03-15 20:34:44,610 INFO L226 Difference]: Without dead ends: 28 [2022-03-15 20:34:44,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 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 20:34:44,613 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 20:34:44,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 3 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 20:34:44,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-03-15 20:34:44,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-03-15 20:34:44,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 27 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 20:34:44,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 48 transitions. [2022-03-15 20:34:44,638 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 48 transitions. Word has length 11 [2022-03-15 20:34:44,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:34:44,639 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 48 transitions. [2022-03-15 20:34:44,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 20:34:44,639 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 48 transitions. [2022-03-15 20:34:44,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-15 20:34:44,640 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:34:44,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:34:44,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 20:34:44,640 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 20:34:44,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:34:44,641 INFO L85 PathProgramCache]: Analyzing trace with hash 348568517, now seen corresponding path program 1 times [2022-03-15 20:34:44,642 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:34:44,642 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887985430] [2022-03-15 20:34:44,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:34:44,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:34:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:34:44,660 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 20:34:44,660 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:34:44,660 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887985430] [2022-03-15 20:34:44,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887985430] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:34:44,661 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:34:44,661 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-03-15 20:34:44,661 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [839719756] [2022-03-15 20:34:44,661 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:34:44,662 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:34:44,665 INFO L252 McrAutomatonBuilder]: Finished intersection with 24 states and 38 transitions. [2022-03-15 20:34:44,665 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:34:44,737 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 20:34:44,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 20:34:44,739 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:34:44,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 20:34:44,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 20:34:44,740 INFO L87 Difference]: Start difference. First operand 28 states and 48 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:34:44,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:34:44,751 INFO L93 Difference]: Finished difference Result 27 states and 47 transitions. [2022-03-15 20:34:44,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 20:34:44,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-03-15 20:34:44,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:34:44,752 INFO L225 Difference]: With dead ends: 27 [2022-03-15 20:34:44,752 INFO L226 Difference]: Without dead ends: 0 [2022-03-15 20:34:44,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 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 20:34:44,754 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 20:34:44,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 20:34:44,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-15 20:34:44,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-15 20:34:44,755 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 20:34:44,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-15 20:34:44,756 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2022-03-15 20:34:44,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:34:44,756 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-15 20:34:44,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:34:44,756 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-15 20:34:44,756 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-15 20:34:44,759 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-03-15 20:34:44,759 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-03-15 20:34:44,760 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-03-15 20:34:44,760 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-03-15 20:34:44,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 20:34:44,762 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-15 20:34:44,764 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 20:34:44,765 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 20:34:44,767 INFO L202 PluginConnector]: Adding new model example_unnecessary_interleavings.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 08:34:44 BasicIcfg [2022-03-15 20:34:44,768 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 20:34:44,768 INFO L158 Benchmark]: Toolchain (without parser) took 1107.57ms. Allocated memory was 181.4MB in the beginning and 231.7MB in the end (delta: 50.3MB). Free memory was 139.6MB in the beginning and 185.3MB in the end (delta: -45.7MB). Peak memory consumption was 4.9MB. Max. memory is 8.0GB. [2022-03-15 20:34:44,769 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 181.4MB. Free memory is still 140.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 20:34:44,769 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.08ms. Allocated memory is still 181.4MB. Free memory was 139.6MB in the beginning and 138.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 20:34:44,770 INFO L158 Benchmark]: Boogie Preprocessor took 12.65ms. Allocated memory is still 181.4MB. Free memory was 138.0MB in the beginning and 137.2MB in the end (delta: 808.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 20:34:44,770 INFO L158 Benchmark]: RCFGBuilder took 182.60ms. Allocated memory is still 181.4MB. Free memory was 137.1MB in the beginning and 129.3MB in the end (delta: 7.8MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-03-15 20:34:44,771 INFO L158 Benchmark]: TraceAbstraction took 882.39ms. Allocated memory was 181.4MB in the beginning and 231.7MB in the end (delta: 50.3MB). Free memory was 128.8MB in the beginning and 185.3MB in the end (delta: -56.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 20:34:44,773 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 0.12ms. Allocated memory is still 181.4MB. Free memory is still 140.6MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.08ms. Allocated memory is still 181.4MB. Free memory was 139.6MB in the beginning and 138.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 12.65ms. Allocated memory is still 181.4MB. Free memory was 138.0MB in the beginning and 137.2MB in the end (delta: 808.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 182.60ms. Allocated memory is still 181.4MB. Free memory was 137.1MB in the beginning and 129.3MB in the end (delta: 7.8MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 882.39ms. Allocated memory was 181.4MB in the beginning and 231.7MB in the end (delta: 50.3MB). Free memory was 128.8MB in the beginning and 185.3MB in the end (delta: -56.5MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 29 PlacesBefore, 25 PlacesAfterwards, 25 TransitionsBefore, 21 TransitionsAfterwards, 84 CoEnabledTransitionPairs, 1 FixpointIterations, 1 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 90 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 90, positive: 90, positive conditional: 0, positive unconditional: 90, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 42, positive: 42, positive conditional: 0, positive unconditional: 42, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 90, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 42, unknown conditional: 0, unknown unconditional: 42] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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: 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, 32 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28 IncrementalHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 3 mSDtfsCounter, 28 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 44 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-15 20:34:44,809 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...