/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-POR-None-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr10.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 16:30:20,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 16:30:20,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 16:30:20,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-21 16:30:21,004 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-POR-None-NoLbe.epf [2021-08-21 16:30:21,037 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 16:30:21,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 16:30:21,037 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-21 16:30:21,037 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-21 16:30:21,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 16:30:21,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 16:30:21,040 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 16:30:21,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 16:30:21,040 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 16:30:21,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 16:30:21,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 16:30:21,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 16:30:21,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 16:30:21,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 16:30:21,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 16:30:21,041 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 16:30:21,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 16:30:21,041 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 16:30:21,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 16:30:21,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 16:30:21,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 16:30:21,042 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 16:30:21,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 16:30:21,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 16:30:21,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 16:30:21,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 16:30:21,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 16:30:21,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 16:30:21,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 16:30:21,043 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 16:30:21,043 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-08-21 16:30:21,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 16:30:21,043 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 16:30:21,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 16:30:21,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 16:30:21,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 16:30:21,364 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-21 16:30:21,366 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-21 16:30:21,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr10.bpl [2021-08-21 16:30:21,367 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr10.bpl' [2021-08-21 16:30:21,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 16:30:21,387 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-21 16:30:21,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 16:30:21,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 16:30:21,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 16:30:21,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 04:30:21" (1/1) ... [2021-08-21 16:30:21,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 04:30:21" (1/1) ... [2021-08-21 16:30:21,410 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 16:30:21,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 16:30:21,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 16:30:21,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 16:30:21,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 04:30:21" (1/1) ... [2021-08-21 16:30:21,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 04:30:21" (1/1) ... [2021-08-21 16:30:21,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 04:30:21" (1/1) ... [2021-08-21 16:30:21,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 04:30:21" (1/1) ... [2021-08-21 16:30:21,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 04:30:21" (1/1) ... [2021-08-21 16:30:21,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 04:30:21" (1/1) ... [2021-08-21 16:30:21,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 04:30:21" (1/1) ... [2021-08-21 16:30:21,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 16:30:21,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 16:30:21,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 16:30:21,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 16:30:21,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 04:30:21" (1/1) ... [2021-08-21 16:30:21,434 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 16:30:21,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:30:21,464 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-21 16:30:21,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-21 16:30:21,521 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-21 16:30:21,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 16:30:21,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 16:30:21,522 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-08-21 16:30:21,522 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-08-21 16:30:21,522 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-08-21 16:30:21,522 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-21 16:30:21,641 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 16:30:21,641 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-21 16:30:21,642 INFO L202 PluginConnector]: Adding new model incr-decr10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:30:21 BoogieIcfgContainer [2021-08-21 16:30:21,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 16:30:21,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 16:30:21,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 16:30:21,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 16:30:21,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 04:30:21" (1/2) ... [2021-08-21 16:30:21,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21123ca5 and model type incr-decr10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:30:21, skipping insertion in model container [2021-08-21 16:30:21,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:30:21" (2/2) ... [2021-08-21 16:30:21,648 INFO L111 eAbstractionObserver]: Analyzing ICFG incr-decr10.bpl [2021-08-21 16:30:21,651 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 16:30:21,651 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 16:30:21,651 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 16:30:21,652 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 16:30:21,810 INFO L148 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2021-08-21 16:30:21,839 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-08-21 16:30:21,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:30:21,840 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-08-21 16:30:21,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2021-08-21 16:30:21,867 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 16:30:21,871 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-21 16:30:21,871 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-08-21 16:30:21,879 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 64 transitions, 208 flow [2021-08-21 16:30:28,540 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 118099 states, 118098 states have (on average 9.75002116885976) internal successors, (1151458), 118098 states have internal predecessors, (1151458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 16:30:28,558 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 16:30:28,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:30:28,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1196779674, now seen corresponding path program 1 times [2021-08-21 16:30:28,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:30:28,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449463232] [2021-08-21 16:30:28,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:30:28,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:30:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:30:29,025 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:30:29,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:30:29,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449463232] [2021-08-21 16:30:29,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449463232] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:30:29,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593619446] [2021-08-21 16:30:29,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:30:29,026 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:30:29,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:30:29,037 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:30:29,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-21 16:30:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:30:29,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 43 conjunts are in the unsatisfiable core [2021-08-21 16:30:29,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:30:29,527 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:30:29,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593619446] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:30:29,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:30:29,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-08-21 16:30:29,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078861529] [2021-08-21 16:30:29,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-21 16:30:29,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:30:29,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-21 16:30:29,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-21 16:30:29,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-21 16:30:29,542 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-21 16:30:29,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 16:30:29,543 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-21 16:30:30,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-21 16:30:30,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-08-21 16:30:30,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-08-21 16:30:30,427 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 16:30:30,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:30:30,428 INFO L82 PathProgramCache]: Analyzing trace with hash 710163894, now seen corresponding path program 2 times [2021-08-21 16:30:30,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:30:30,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196949368] [2021-08-21 16:30:30,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:30:30,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:30:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:30:30,720 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 16:30:30,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:30:30,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196949368] [2021-08-21 16:30:30,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196949368] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:30:30,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249816075] [2021-08-21 16:30:30,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 16:30:30,721 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:30:30,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:30:30,728 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:30:30,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-21 16:30:30,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 16:30:30,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:30:30,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 47 conjunts are in the unsatisfiable core [2021-08-21 16:30:30,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:30:31,283 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 16:30:31,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249816075] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:30:31,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:30:31,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-08-21 16:30:31,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910726388] [2021-08-21 16:30:31,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 16:30:31,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:30:31,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 16:30:31,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 16:30:31,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-21 16:30:31,286 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-21 16:30:31,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 16:30:31,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-08-21 16:30:31,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-21 16:30:31,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-21 16:30:31,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-21 16:30:31,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-21 16:30:31,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:30:31,726 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 16:30:31,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:30:31,727 INFO L82 PathProgramCache]: Analyzing trace with hash -652097832, now seen corresponding path program 3 times [2021-08-21 16:30:31,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:30:31,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484781139] [2021-08-21 16:30:31,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:30:31,727 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:30:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:30:31,951 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-21 16:30:31,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:30:31,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484781139] [2021-08-21 16:30:31,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484781139] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:30:31,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321053440] [2021-08-21 16:30:31,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 16:30:31,952 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:30:31,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:30:31,962 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:30:31,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-21 16:30:32,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-08-21 16:30:32,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:30:32,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 75 conjunts are in the unsatisfiable core [2021-08-21 16:30:32,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:30:32,934 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-21 16:30:32,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321053440] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:30:32,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:30:32,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-08-21 16:30:32,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278625022] [2021-08-21 16:30:32,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 16:30:32,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:30:32,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 16:30:32,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 16:30:32,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-21 16:30:32,940 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-21 16:30:32,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 16:30:32,941 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-08-21 16:30:32,941 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-08-21 16:30:32,942 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-21 16:30:33,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-21 16:30:33,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-21 16:30:33,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 16:30:33,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-21 16:30:33,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:30:33,431 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 16:30:33,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:30:33,432 INFO L82 PathProgramCache]: Analyzing trace with hash 66416198, now seen corresponding path program 4 times [2021-08-21 16:30:33,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:30:33,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417589314] [2021-08-21 16:30:33,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:30:33,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:30:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:30:33,784 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-08-21 16:30:33,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:30:33,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417589314] [2021-08-21 16:30:33,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417589314] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:30:33,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184767024] [2021-08-21 16:30:33,785 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 16:30:33,785 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:30:33,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:30:33,787 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:30:34,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-21 16:30:34,313 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 16:30:34,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:30:34,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 135 conjunts are in the unsatisfiable core [2021-08-21 16:30:34,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:30:34,859 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-08-21 16:30:34,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184767024] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:30:34,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:30:34,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-08-21 16:30:34,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405681286] [2021-08-21 16:30:34,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 16:30:34,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:30:34,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 16:30:34,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-21 16:30:34,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-21 16:30:34,861 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-21 16:30:34,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 16:30:34,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-08-21 16:30:34,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-08-21 16:30:34,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-08-21 16:30:34,862 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-21 16:30:35,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-21 16:30:35,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-21 16:30:35,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 16:30:35,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 16:30:36,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-08-21 16:30:36,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:30:36,193 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 16:30:36,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:30:36,193 INFO L82 PathProgramCache]: Analyzing trace with hash 712779544, now seen corresponding path program 5 times [2021-08-21 16:30:36,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:30:36,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156308828] [2021-08-21 16:30:36,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:30:36,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:30:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:30:37,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1214 backedges. 0 proven. 929 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-08-21 16:30:37,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:30:37,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156308828] [2021-08-21 16:30:37,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156308828] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:30:37,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264085990] [2021-08-21 16:30:37,008 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 16:30:37,008 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:30:37,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:30:37,009 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:30:37,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-21 16:30:37,281 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2021-08-21 16:30:37,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:30:37,286 WARN L261 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 259 conjunts are in the unsatisfiable core [2021-08-21 16:30:37,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:30:38,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1214 backedges. 0 proven. 929 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-08-21 16:30:38,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264085990] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:30:38,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:30:38,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-08-21 16:30:38,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363199881] [2021-08-21 16:30:38,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-21 16:30:38,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:30:38,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-21 16:30:38,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-21 16:30:38,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-21 16:30:38,273 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-21 16:30:38,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 16:30:38,273 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-08-21 16:30:38,273 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-08-21 16:30:38,273 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-08-21 16:30:38,273 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-08-21 16:30:38,273 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-21 16:30:39,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-21 16:30:39,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-21 16:30:39,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 16:30:39,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 16:30:39,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 16:30:39,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-21 16:30:39,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:30:39,832 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 16:30:39,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:30:39,832 INFO L82 PathProgramCache]: Analyzing trace with hash 488059238, now seen corresponding path program 6 times [2021-08-21 16:30:39,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:30:39,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634653334] [2021-08-21 16:30:39,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:30:39,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:30:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:30:40,811 INFO L134 CoverageAnalysis]: Checked inductivity of 5149 backedges. 0 proven. 3990 refuted. 0 times theorem prover too weak. 1159 trivial. 0 not checked. [2021-08-21 16:30:40,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:30:40,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634653334] [2021-08-21 16:30:40,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634653334] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:30:40,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180730771] [2021-08-21 16:30:40,811 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 16:30:40,812 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:30:40,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:30:40,821 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:30:40,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-21 16:30:41,300 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 51 check-sat command(s) [2021-08-21 16:30:41,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:30:41,309 WARN L261 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 511 conjunts are in the unsatisfiable core [2021-08-21 16:30:41,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:30:42,817 INFO L134 CoverageAnalysis]: Checked inductivity of 5149 backedges. 0 proven. 3990 refuted. 0 times theorem prover too weak. 1159 trivial. 0 not checked. [2021-08-21 16:30:42,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180730771] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:30:42,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:30:42,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-08-21 16:30:42,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773579359] [2021-08-21 16:30:42,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-21 16:30:42,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:30:42,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-21 16:30:42,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-21 16:30:42,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-21 16:30:42,819 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-21 16:30:42,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 16:30:42,820 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-08-21 16:30:42,820 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-08-21 16:30:42,820 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-08-21 16:30:42,820 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-08-21 16:30:42,820 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-08-21 16:30:42,820 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-21 16:30:48,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-21 16:30:48,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-21 16:30:48,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 16:30:48,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 16:30:48,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 16:30:48,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 16:30:48,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-21 16:30:49,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:30:49,056 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 16:30:49,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:30:49,057 INFO L82 PathProgramCache]: Analyzing trace with hash -684686728, now seen corresponding path program 7 times [2021-08-21 16:30:49,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:30:49,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719639098] [2021-08-21 16:30:49,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:30:49,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:30:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:30:51,103 INFO L134 CoverageAnalysis]: Checked inductivity of 21212 backedges. 0 proven. 16567 refuted. 0 times theorem prover too weak. 4645 trivial. 0 not checked. [2021-08-21 16:30:51,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:30:51,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719639098] [2021-08-21 16:30:51,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719639098] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:30:51,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228801290] [2021-08-21 16:30:51,104 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-21 16:30:51,104 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:30:51,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:30:51,131 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:30:51,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-21 16:30:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:30:51,891 WARN L261 TraceCheckSpWp]: Trace formula consists of 1251 conjuncts, 1019 conjunts are in the unsatisfiable core [2021-08-21 16:30:51,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:30:54,587 INFO L134 CoverageAnalysis]: Checked inductivity of 21212 backedges. 0 proven. 16567 refuted. 0 times theorem prover too weak. 4645 trivial. 0 not checked. [2021-08-21 16:30:54,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228801290] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:30:54,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:30:54,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-08-21 16:30:54,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548492434] [2021-08-21 16:30:54,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-21 16:30:54,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:30:54,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-21 16:30:54,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-08-21 16:30:54,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-21 16:30:54,589 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-21 16:30:54,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 16:30:54,590 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-08-21 16:30:54,590 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-08-21 16:30:54,590 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-08-21 16:30:54,590 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-08-21 16:30:54,590 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-08-21 16:30:54,590 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-08-21 16:30:54,590 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-21 16:31:10,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-21 16:31:10,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-21 16:31:10,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 16:31:10,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 16:31:10,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 16:31:10,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 16:31:10,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-21 16:31:10,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-21 16:31:10,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-08-21 16:31:10,271 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 16:31:10,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:31:10,272 INFO L82 PathProgramCache]: Analyzing trace with hash 231481030, now seen corresponding path program 8 times [2021-08-21 16:31:10,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:31:10,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808430973] [2021-08-21 16:31:10,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:31:10,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:31:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:31:15,184 INFO L134 CoverageAnalysis]: Checked inductivity of 86107 backedges. 0 proven. 68183 refuted. 0 times theorem prover too weak. 17924 trivial. 0 not checked. [2021-08-21 16:31:15,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:31:15,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808430973] [2021-08-21 16:31:15,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808430973] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:31:15,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962965625] [2021-08-21 16:31:15,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 16:31:15,185 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:31:15,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:31:15,209 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:31:15,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-21 16:31:16,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 16:31:16,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:31:16,541 WARN L261 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 2039 conjunts are in the unsatisfiable core [2021-08-21 16:31:16,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:31:21,484 INFO L134 CoverageAnalysis]: Checked inductivity of 86107 backedges. 0 proven. 68183 refuted. 0 times theorem prover too weak. 17924 trivial. 0 not checked. [2021-08-21 16:31:21,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962965625] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:31:21,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:31:21,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-08-21 16:31:21,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227561076] [2021-08-21 16:31:21,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-21 16:31:21,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:31:21,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-21 16:31:21,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-08-21 16:31:21,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-21 16:31:21,487 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-21 16:31:21,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 16:31:21,487 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-08-21 16:31:21,487 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-08-21 16:31:21,487 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-08-21 16:31:21,487 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-08-21 16:31:21,487 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-08-21 16:31:21,487 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-08-21 16:31:21,487 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-08-21 16:31:21,487 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-21 16:32:38,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-21 16:32:38,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-21 16:32:38,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 16:32:38,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 16:32:38,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 16:32:38,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 16:32:38,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-21 16:32:38,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-21 16:32:38,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-21 16:32:38,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:32:38,454 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 16:32:38,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:32:38,454 INFO L82 PathProgramCache]: Analyzing trace with hash -935300520, now seen corresponding path program 9 times [2021-08-21 16:32:38,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:32:38,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657911233] [2021-08-21 16:32:38,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:32:38,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:32:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:32:49,648 INFO L134 CoverageAnalysis]: Checked inductivity of 346970 backedges. 0 proven. 277948 refuted. 0 times theorem prover too weak. 69022 trivial. 0 not checked. [2021-08-21 16:32:49,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:32:49,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657911233] [2021-08-21 16:32:49,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657911233] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:32:49,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376005370] [2021-08-21 16:32:49,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 16:32:49,649 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:32:49,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:32:49,659 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:32:49,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-21 16:33:09,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 497 check-sat command(s) [2021-08-21 16:33:09,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:33:09,412 WARN L261 TraceCheckSpWp]: Trace formula consists of 4315 conjuncts, 4083 conjunts are in the unsatisfiable core [2021-08-21 16:33:09,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:33:19,016 INFO L134 CoverageAnalysis]: Checked inductivity of 346970 backedges. 0 proven. 277948 refuted. 0 times theorem prover too weak. 69022 trivial. 0 not checked. [2021-08-21 16:33:19,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376005370] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:33:19,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:33:19,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-08-21 16:33:19,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753087520] [2021-08-21 16:33:19,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-21 16:33:19,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:33:19,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-21 16:33:19,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-08-21 16:33:19,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-21 16:33:19,020 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-21 16:33:19,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 11.5) internal successors, (138), 12 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 16:33:19,020 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-08-21 16:33:19,020 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-08-21 16:33:19,020 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-08-21 16:33:19,020 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-08-21 16:33:19,020 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-08-21 16:33:19,020 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-08-21 16:33:19,020 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-08-21 16:33:19,020 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-08-21 16:33:19,020 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.