/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-NewStatesSleep-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 21:05:48,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 21:05:48,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 21:05:48,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-21 21:05:48,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-21 21:05:48,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-21 21:05:48,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-21 21:05:48,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-21 21:05:48,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-21 21:05:48,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-21 21:05:48,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-21 21:05:48,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-21 21:05:48,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-21 21:05:48,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-21 21:05:48,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-21 21:05:48,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-21 21:05:48,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-21 21:05:48,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-21 21:05:48,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-21 21:05:48,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-21 21:05:48,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-21 21:05:48,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-21 21:05:48,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-21 21:05:48,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-21 21:05:48,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-21 21:05:48,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-21 21:05:48,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-21 21:05:48,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-21 21:05:48,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-21 21:05:48,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-21 21:05:48,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-21 21:05:48,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-21 21:05:48,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-21 21:05:48,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-21 21:05:48,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-21 21:05:48,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-21 21:05:48,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-21 21:05:48,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-21 21:05:48,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-21 21:05:48,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-21 21:05:48,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-21 21:05:48,347 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-NewStatesSleep-NoLbe.epf [2021-08-21 21:05:48,373 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 21:05:48,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 21:05:48,373 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-21 21:05:48,373 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-21 21:05:48,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 21:05:48,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 21:05:48,374 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 21:05:48,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 21:05:48,375 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 21:05:48,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 21:05:48,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 21:05:48,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 21:05:48,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 21:05:48,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 21:05:48,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 21:05:48,377 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 21:05:48,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 21:05:48,377 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 21:05:48,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 21:05:48,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 21:05:48,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 21:05:48,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 21:05:48,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 21:05:48,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 21:05:48,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 21:05:48,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 21:05:48,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 21:05:48,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 21:05:48,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 21:05:48,382 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 21:05:48,382 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-08-21 21:05:48,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 21:05:48,383 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-08-21 21:05:48,383 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 21:05:48,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 21:05:48,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 21:05:48,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 21:05:48,671 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-21 21:05:48,672 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-21 21:05:48,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq.wvr.bpl [2021-08-21 21:05:48,672 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq.wvr.bpl' [2021-08-21 21:05:48,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 21:05:48,691 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-21 21:05:48,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 21:05:48,692 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 21:05:48,692 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 21:05:48,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 09:05:48" (1/1) ... [2021-08-21 21:05:48,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 09:05:48" (1/1) ... [2021-08-21 21:05:48,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 21:05:48,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 21:05:48,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 21:05:48,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 21:05:48,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 09:05:48" (1/1) ... [2021-08-21 21:05:48,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 09:05:48" (1/1) ... [2021-08-21 21:05:48,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 09:05:48" (1/1) ... [2021-08-21 21:05:48,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 09:05:48" (1/1) ... [2021-08-21 21:05:48,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 09:05:48" (1/1) ... [2021-08-21 21:05:48,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 09:05:48" (1/1) ... [2021-08-21 21:05:48,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 09:05:48" (1/1) ... [2021-08-21 21:05:48,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 21:05:48,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 21:05:48,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 21:05:48,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 21:05:48,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 09:05:48" (1/1) ... [2021-08-21 21:05:48,731 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 21:05:48,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 21:05:48,746 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 21:05:48,752 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 21:05:48,770 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-21 21:05:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-21 21:05:48,770 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-21 21:05:48,770 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-21 21:05:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-21 21:05:48,771 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-21 21:05:48,771 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-21 21:05:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 21:05:48,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 21:05:48,773 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 21:05:48,943 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 21:05:48,944 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-21 21:05:48,945 INFO L202 PluginConnector]: Adding new model dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:05:48 BoogieIcfgContainer [2021-08-21 21:05:48,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 21:05:48,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 21:05:48,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 21:05:48,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 21:05:48,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 09:05:48" (1/2) ... [2021-08-21 21:05:48,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b4dd113 and model type dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:05:48, skipping insertion in model container [2021-08-21 21:05:48,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:05:48" (2/2) ... [2021-08-21 21:05:48,950 INFO L111 eAbstractionObserver]: Analyzing ICFG dec-subseq.wvr.bpl [2021-08-21 21:05:48,953 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 21:05:48,953 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 21:05:48,953 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 21:05:48,953 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 21:05:48,975 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-08-21 21:05:49,003 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-08-21 21:05:49,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 21:05:49,004 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 21:05:49,052 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 21:05:49,071 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 21:05:49,075 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 21:05:49,075 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-21 21:05:49,170 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 21:05:49,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 21:05:49,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1732963346, now seen corresponding path program 1 times [2021-08-21 21:05:49,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 21:05:49,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879252185] [2021-08-21 21:05:49,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 21:05:49,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 21:05:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 21:05:49,284 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 21:05:49,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 21:05:49,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879252185] [2021-08-21 21:05:49,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879252185] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 21:05:49,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 21:05:49,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-21 21:05:49,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134349136] [2021-08-21 21:05:49,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 21:05:49,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 21:05:49,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 21:05:49,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 21:05:49,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-21 21:05:49,300 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-21 21:05:49,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 21:05:49,301 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-21 21:05:49,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 21:05:49,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 21:05:49,334 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 21:05:49,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 21:05:49,335 INFO L82 PathProgramCache]: Analyzing trace with hash 2091911140, now seen corresponding path program 2 times [2021-08-21 21:05:49,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 21:05:49,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815595022] [2021-08-21 21:05:49,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 21:05:49,335 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 21:05:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 21:05:49,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 21:05:49,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 21:05:49,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815595022] [2021-08-21 21:05:49,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815595022] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 21:05:49,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618612579] [2021-08-21 21:05:49,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 21:05:49,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 21:05:49,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 21:05:49,504 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 21:05:49,532 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 21:05:49,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 21:05:49,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 21:05:49,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-21 21:05:49,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 21:05:49,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-21 21:05:49,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-21 21:05:49,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 21:05:49,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618612579] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 21:05:49,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 21:05:49,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-08-21 21:05:49,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213027200] [2021-08-21 21:05:49,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-21 21:05:49,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 21:05:49,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-21 21:05:49,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-08-21 21:05:49,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-21 21:05:49,852 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-21 21:05:49,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 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 21:05:49,852 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-08-21 21:05:49,852 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-21 21:05:49,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 21:05:49,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 21:05:50,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-21 21:05:50,209 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,SelfDestructingSolverStorable1 [2021-08-21 21:05:50,209 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 21:05:50,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 21:05:50,210 INFO L82 PathProgramCache]: Analyzing trace with hash -951481131, now seen corresponding path program 3 times [2021-08-21 21:05:50,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 21:05:50,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376077951] [2021-08-21 21:05:50,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 21:05:50,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 21:05:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 21:05:50,667 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 21:05:50,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 21:05:50,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376077951] [2021-08-21 21:05:50,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376077951] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 21:05:50,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639079159] [2021-08-21 21:05:50,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 21:05:50,668 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 21:05:50,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 21:05:50,669 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 21:05:50,680 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 21:05:50,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-21 21:05:50,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 21:05:50,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-21 21:05:50,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 21:05:51,085 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-21 21:05:51,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 27 [2021-08-21 21:05:51,375 INFO L354 Elim1Store]: treesize reduction 23, result has 30.3 percent of original size [2021-08-21 21:05:51,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 28 [2021-08-21 21:05:51,519 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 21:05:51,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639079159] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 21:05:51,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 21:05:51,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 27 [2021-08-21 21:05:51,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150034893] [2021-08-21 21:05:51,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-08-21 21:05:51,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 21:05:51,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-08-21 21:05:51,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2021-08-21 21:05:51,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-21 21:05:51,521 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-21 21:05:51,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 27 states have internal predecessors, (58), 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 21:05:51,522 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-08-21 21:05:51,522 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-08-21 21:05:51,522 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-21 21:05:52,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 21:05:52,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 21:05:52,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-21 21:05:52,621 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 21:05:52,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 21:05:52,813 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 21:05:52,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 21:05:52,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1046241259, now seen corresponding path program 1 times [2021-08-21 21:05:52,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 21:05:52,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739359937] [2021-08-21 21:05:52,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 21:05:52,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 21:05:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 21:05:52,900 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-21 21:05:52,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 21:05:52,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739359937] [2021-08-21 21:05:52,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739359937] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 21:05:52,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808560323] [2021-08-21 21:05:52,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 21:05:52,901 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 21:05:52,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 21:05:52,902 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 21:05:52,902 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 21:05:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 21:05:53,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-21 21:05:53,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 21:05:53,148 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 37 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-21 21:05:53,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808560323] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 21:05:53,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 21:05:53,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-08-21 21:05:53,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338410226] [2021-08-21 21:05:53,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 21:05:53,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 21:05:53,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 21:05:53,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-21 21:05:53,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-21 21:05:53,150 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-21 21:05:53,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 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) [2021-08-21 21:05:53,150 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-08-21 21:05:53,150 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-08-21 21:05:53,150 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-08-21 21:05:53,150 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-21 21:05:53,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 21:05:53,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 21:05:53,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-21 21:05:53,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 21:05:53,215 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 21:05:53,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 21:05:53,416 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 21:05:53,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 21:05:53,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1942250518, now seen corresponding path program 2 times [2021-08-21 21:05:53,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 21:05:53,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709666665] [2021-08-21 21:05:53,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 21:05:53,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 21:05:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 21:05:54,550 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-21 21:05:54,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 21:05:54,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709666665] [2021-08-21 21:05:54,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709666665] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 21:05:54,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041909711] [2021-08-21 21:05:54,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 21:05:54,551 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 21:05:54,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 21:05:54,552 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 21:05:54,553 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 21:05:54,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 21:05:54,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 21:05:54,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 72 conjunts are in the unsatisfiable core [2021-08-21 21:05:54,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 21:05:58,573 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-21 21:05:58,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 90 treesize of output 178 [2021-08-21 21:05:59,752 INFO L354 Elim1Store]: treesize reduction 247, result has 20.1 percent of original size [2021-08-21 21:05:59,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 101 [2021-08-21 21:06:00,712 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 13 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 21:06:00,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041909711] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 21:06:00,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 21:06:00,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 39] total 66 [2021-08-21 21:06:00,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342371855] [2021-08-21 21:06:00,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-08-21 21:06:00,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 21:06:00,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-08-21 21:06:00,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=477, Invalid=3945, Unknown=0, NotChecked=0, Total=4422 [2021-08-21 21:06:00,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-21 21:06:00,715 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-21 21:06:00,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.835820895522388) internal successors, (123), 66 states have internal predecessors, (123), 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 21:06:00,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-08-21 21:06:00,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-08-21 21:06:00,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-08-21 21:06:00,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-08-21 21:06:00,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-21 21:06:01,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 21:06:01,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 21:06:01,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-21 21:06:01,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 21:06:01,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 21:06:01,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-21 21:06:02,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 21:06:02,057 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 21:06:02,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 21:06:02,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1307750588, now seen corresponding path program 3 times [2021-08-21 21:06:02,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 21:06:02,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514771688] [2021-08-21 21:06:02,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 21:06:02,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 21:06:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 21:06:02,135 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 84 proven. 87 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-08-21 21:06:02,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 21:06:02,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514771688] [2021-08-21 21:06:02,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514771688] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 21:06:02,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820529949] [2021-08-21 21:06:02,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 21:06:02,136 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 21:06:02,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 21:06:02,137 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 21:06:02,138 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 21:06:02,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-08-21 21:06:02,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 21:06:02,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-21 21:06:02,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 21:06:02,728 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 105 proven. 66 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-08-21 21:06:02,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820529949] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 21:06:02,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 21:06:02,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-08-21 21:06:02,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648425039] [2021-08-21 21:06:02,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 21:06:02,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 21:06:02,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 21:06:02,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-08-21 21:06:02,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-21 21:06:02,730 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-21 21:06:02,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 7 states have internal predecessors, (58), 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 21:06:02,731 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-08-21 21:06:02,733 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-08-21 21:06:02,736 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-08-21 21:06:02,736 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-08-21 21:06:02,736 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-08-21 21:06:02,736 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-21 21:06:02,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 21:06:02,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 21:06:02,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-21 21:06:02,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 21:06:02,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 21:06:02,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 21:06:02,808 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 21:06:02,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 21:06:02,993 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 21:06:02,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 21:06:02,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1920253790, now seen corresponding path program 4 times [2021-08-21 21:06:02,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 21:06:02,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536404564] [2021-08-21 21:06:02,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 21:06:02,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 21:06:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 21:06:04,556 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 277 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-08-21 21:06:04,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 21:06:04,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536404564] [2021-08-21 21:06:04,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536404564] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 21:06:04,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551666151] [2021-08-21 21:06:04,557 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 21:06:04,557 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 21:06:04,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 21:06:04,560 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 21:06:04,560 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 21:06:04,938 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 21:06:04,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 21:06:04,939 WARN L261 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 96 conjunts are in the unsatisfiable core [2021-08-21 21:06:04,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 21:06:16,965 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-21 21:06:16,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 120 treesize of output 300 [2021-08-21 21:06:18,576 INFO L354 Elim1Store]: treesize reduction 322, result has 0.3 percent of original size [2021-08-21 21:06:18,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 88 treesize of output 28 [2021-08-21 21:06:18,602 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 293 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 21:06:18,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551666151] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 21:06:18,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 21:06:18,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 50] total 88 [2021-08-21 21:06:18,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950495360] [2021-08-21 21:06:18,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2021-08-21 21:06:18,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 21:06:18,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-08-21 21:06:18,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=578, Invalid=7253, Unknown=1, NotChecked=0, Total=7832 [2021-08-21 21:06:18,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-21 21:06:18,606 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-21 21:06:18,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 1.7303370786516854) internal successors, (154), 88 states have internal predecessors, (154), 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 21:06:18,606 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-08-21 21:06:18,606 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-08-21 21:06:18,606 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-08-21 21:06:18,606 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-08-21 21:06:18,606 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-08-21 21:06:18,606 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-08-21 21:06:18,606 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-21 21:06:20,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 21:06:20,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 21:06:20,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-21 21:06:20,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 21:06:20,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 21:06:20,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 21:06:20,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 21:06:20,065 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 21:06:20,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 21:06:20,258 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 21:06:20,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 21:06:20,258 INFO L82 PathProgramCache]: Analyzing trace with hash 640482384, now seen corresponding path program 5 times [2021-08-21 21:06:20,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 21:06:20,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509212684] [2021-08-21 21:06:20,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 21:06:20,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 21:06:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 21:06:20,361 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 150 proven. 149 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-08-21 21:06:20,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 21:06:20,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509212684] [2021-08-21 21:06:20,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509212684] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 21:06:20,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157550786] [2021-08-21 21:06:20,362 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 21:06:20,362 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 21:06:20,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 21:06:20,363 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 21:06:20,384 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 21:06:21,039 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-08-21 21:06:21,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 21:06:21,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-21 21:06:21,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 21:06:21,286 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 177 proven. 122 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-08-21 21:06:21,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157550786] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 21:06:21,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 21:06:21,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-08-21 21:06:21,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581541996] [2021-08-21 21:06:21,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-21 21:06:21,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 21:06:21,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-21 21:06:21,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-21 21:06:21,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-21 21:06:21,288 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-21 21:06:21,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 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 21:06:21,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-08-21 21:06:21,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-08-21 21:06:21,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-08-21 21:06:21,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-08-21 21:06:21,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-08-21 21:06:21,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-08-21 21:06:21,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-08-21 21:06:21,289 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-21 21:06:21,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 21:06:21,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 21:06:21,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-21 21:06:21,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 21:06:21,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 21:06:21,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 21:06:21,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 21:06:21,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 21:06:21,371 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 21:06:21,556 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,SelfDestructingSolverStorable7 [2021-08-21 21:06:21,557 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 21:06:21,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 21:06:21,557 INFO L82 PathProgramCache]: Analyzing trace with hash -902206686, now seen corresponding path program 6 times [2021-08-21 21:06:21,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 21:06:21,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881980155] [2021-08-21 21:06:21,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 21:06:21,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 21:06:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 21:06:23,861 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-08-21 21:06:23,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 21:06:23,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881980155] [2021-08-21 21:06:23,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881980155] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 21:06:23,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42962409] [2021-08-21 21:06:23,862 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 21:06:23,862 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 21:06:23,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 21:06:23,864 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 21:06:23,865 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 21:06:24,569 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-08-21 21:06:24,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 21:06:24,571 WARN L261 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 118 conjunts are in the unsatisfiable core [2021-08-21 21:06:24,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 21:14:00,189 WARN L224 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-08-21 21:14:00,190 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2021-08-21 21:14:00,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-08-21 21:14:00,210 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 21:14:00,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 21:14:00,392 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:934) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:438) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:235) ... 46 more [2021-08-21 21:14:00,396 INFO L168 Benchmark]: Toolchain (without parser) took 491704.46 ms. Allocated memory was 199.2 MB in the beginning and 345.0 MB in the end (delta: 145.8 MB). Free memory was 179.9 MB in the beginning and 277.7 MB in the end (delta: -97.8 MB). Peak memory consumption was 50.2 MB. Max. memory is 8.0 GB. [2021-08-21 21:14:00,396 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 199.2 MB. Free memory is still 181.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 21:14:00,397 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.32 ms. Allocated memory is still 199.2 MB. Free memory was 179.7 MB in the beginning and 178.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-08-21 21:14:00,397 INFO L168 Benchmark]: Boogie Preprocessor took 13.14 ms. Allocated memory is still 199.2 MB. Free memory was 178.3 MB in the beginning and 177.4 MB in the end (delta: 866.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 21:14:00,397 INFO L168 Benchmark]: RCFGBuilder took 219.84 ms. Allocated memory is still 199.2 MB. Free memory was 177.2 MB in the beginning and 164.0 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-08-21 21:14:00,397 INFO L168 Benchmark]: TraceAbstraction took 491448.63 ms. Allocated memory was 199.2 MB in the beginning and 345.0 MB in the end (delta: 145.8 MB). Free memory was 163.6 MB in the beginning and 277.7 MB in the end (delta: -114.0 MB). Peak memory consumption was 32.4 MB. Max. memory is 8.0 GB. [2021-08-21 21:14:00,398 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 0.12 ms. Allocated memory is still 199.2 MB. Free memory is still 181.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 19.32 ms. Allocated memory is still 199.2 MB. Free memory was 179.7 MB in the beginning and 178.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.14 ms. Allocated memory is still 199.2 MB. Free memory was 178.3 MB in the beginning and 177.4 MB in the end (delta: 866.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 219.84 ms. Allocated memory is still 199.2 MB. Free memory was 177.2 MB in the beginning and 164.0 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 491448.63 ms. Allocated memory was 199.2 MB in the beginning and 345.0 MB in the end (delta: 145.8 MB). Free memory was 163.6 MB in the beginning and 277.7 MB in the end (delta: -114.0 MB). Peak memory consumption was 32.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-08-21 21:14:00,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 Received shutdown request...