/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/fork_loop_unsafe2.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-bc289cb [2022-01-28 14:32:39,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-28 14:32:39,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-28 14:32:39,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-28 14:32:39,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-28 14:32:39,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-28 14:32:39,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-28 14:32:39,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-28 14:32:39,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-28 14:32:39,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-28 14:32:39,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-28 14:32:39,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-28 14:32:39,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-28 14:32:39,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-28 14:32:39,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-28 14:32:39,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-28 14:32:39,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-28 14:32:39,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-28 14:32:39,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-28 14:32:39,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-28 14:32:39,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-28 14:32:39,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-28 14:32:39,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-28 14:32:39,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-28 14:32:39,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-28 14:32:39,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-28 14:32:39,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-28 14:32:39,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-28 14:32:39,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-28 14:32:39,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-28 14:32:39,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-28 14:32:39,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-28 14:32:39,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-28 14:32:39,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-28 14:32:39,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-28 14:32:39,211 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-28 14:32:39,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-28 14:32:39,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-28 14:32:39,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-28 14:32:39,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-28 14:32:39,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-28 14:32:39,217 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-01-28 14:32:39,256 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-28 14:32:39,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-28 14:32:39,257 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-28 14:32:39,257 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-28 14:32:39,258 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-28 14:32:39,258 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-28 14:32:39,259 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-28 14:32:39,259 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-28 14:32:39,259 INFO L138 SettingsManager]: * Use SBE=true [2022-01-28 14:32:39,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-28 14:32:39,260 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-28 14:32:39,260 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-28 14:32:39,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-28 14:32:39,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-28 14:32:39,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-28 14:32:39,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-28 14:32:39,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-28 14:32:39,261 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-28 14:32:39,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-28 14:32:39,261 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-28 14:32:39,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-28 14:32:39,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-28 14:32:39,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-28 14:32:39,261 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-28 14:32:39,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-28 14:32:39,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-28 14:32:39,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-28 14:32:39,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-28 14:32:39,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-28 14:32:39,262 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-28 14:32:39,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-28 14:32:39,262 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-28 14:32:39,262 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-28 14:32:39,263 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-28 14:32:39,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-28 14:32:39,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-28 14:32:39,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-28 14:32:39,509 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-28 14:32:39,511 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-28 14:32:39,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_unsafe2.bpl [2022-01-28 14:32:39,513 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_unsafe2.bpl' [2022-01-28 14:32:39,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-28 14:32:39,538 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-28 14:32:39,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-28 14:32:39,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-28 14:32:39,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-28 14:32:39,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:32:39" (1/1) ... [2022-01-28 14:32:39,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:32:39" (1/1) ... [2022-01-28 14:32:39,566 INFO L137 Inliner]: procedures = 2, calls = 1, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-28 14:32:39,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-28 14:32:39,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-28 14:32:39,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-28 14:32:39,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-28 14:32:39,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:32:39" (1/1) ... [2022-01-28 14:32:39,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:32:39" (1/1) ... [2022-01-28 14:32:39,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:32:39" (1/1) ... [2022-01-28 14:32:39,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:32:39" (1/1) ... [2022-01-28 14:32:39,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:32:39" (1/1) ... [2022-01-28 14:32:39,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:32:39" (1/1) ... [2022-01-28 14:32:39,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:32:39" (1/1) ... [2022-01-28 14:32:39,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-28 14:32:39,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-28 14:32:39,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-28 14:32:39,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-28 14:32:39,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:32:39" (1/1) ... [2022-01-28 14:32:39,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-28 14:32:39,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 14:32:39,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-28 14:32:39,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-28 14:32:39,653 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-28 14:32:39,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-28 14:32:39,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-28 14:32:39,654 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread given in one single declaration [2022-01-28 14:32:39,654 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-01-28 14:32:39,654 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-01-28 14:32:39,655 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-28 14:32:39,697 INFO L234 CfgBuilder]: Building ICFG [2022-01-28 14:32:39,698 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-28 14:32:39,758 INFO L275 CfgBuilder]: Performing block encoding [2022-01-28 14:32:39,764 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-28 14:32:39,764 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-28 14:32:39,770 INFO L202 PluginConnector]: Adding new model fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:32:39 BoogieIcfgContainer [2022-01-28 14:32:39,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-28 14:32:39,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-28 14:32:39,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-28 14:32:39,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-28 14:32:39,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:32:39" (1/2) ... [2022-01-28 14:32:39,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b910d14 and model type fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:32:39, skipping insertion in model container [2022-01-28 14:32:39,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:32:39" (2/2) ... [2022-01-28 14:32:39,782 INFO L111 eAbstractionObserver]: Analyzing ICFG fork_loop_unsafe2.bpl [2022-01-28 14:32:39,792 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-28 14:32:39,792 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-28 14:32:39,794 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-28 14:32:39,794 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-28 14:32:39,816 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-28 14:32:39,872 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-28 14:32:39,878 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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 [2022-01-28 14:32:39,878 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-28 14:32:39,892 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 11 places, 8 transitions, 21 flow [2022-01-28 14:32:39,905 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 15 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:39,906 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:39,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-01-28 14:32:39,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:32:39,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2022-01-28 14:32:39,911 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT] === [2022-01-28 14:32:39,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:32:39,915 INFO L85 PathProgramCache]: Analyzing trace with hash 41097, now seen corresponding path program 1 times [2022-01-28 14:32:39,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:32:39,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940944789] [2022-01-28 14:32:39,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:32:39,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:32:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-28 14:32:39,975 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-28 14:32:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-28 14:32:39,988 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-28 14:32:39,990 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-28 14:32:39,991 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 3 remaining) [2022-01-28 14:32:39,992 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 3 remaining) [2022-01-28 14:32:39,993 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 3 remaining) [2022-01-28 14:32:39,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-28 14:32:39,997 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-28 14:32:39,998 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-28 14:32:39,998 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-01-28 14:32:40,003 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-28 14:32:40,005 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-28 14:32:40,007 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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 [2022-01-28 14:32:40,007 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-28 14:32:40,008 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 13 transitions, 38 flow [2022-01-28 14:32:40,032 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 81 states, 73 states have (on average 2.3835616438356166) internal successors, (174), 80 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:40,033 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 73 states have (on average 2.3835616438356166) internal successors, (174), 80 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:40,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-01-28 14:32:40,034 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:32:40,034 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-01-28 14:32:40,034 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT] === [2022-01-28 14:32:40,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:32:40,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1678255, now seen corresponding path program 1 times [2022-01-28 14:32:40,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:32:40,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942582178] [2022-01-28 14:32:40,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:32:40,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:32:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-28 14:32:40,039 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-28 14:32:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-28 14:32:40,043 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-28 14:32:40,043 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-28 14:32:40,043 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 4 remaining) [2022-01-28 14:32:40,043 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (2 of 4 remaining) [2022-01-28 14:32:40,043 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 4 remaining) [2022-01-28 14:32:40,044 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 4 remaining) [2022-01-28 14:32:40,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-28 14:32:40,044 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-28 14:32:40,045 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-28 14:32:40,045 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-01-28 14:32:40,053 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-28 14:32:40,055 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-28 14:32:40,057 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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 [2022-01-28 14:32:40,057 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-28 14:32:40,058 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 18 transitions, 57 flow [2022-01-28 14:32:40,109 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 423 states, 404 states have (on average 3.099009900990099) internal successors, (1252), 422 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:40,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 423 states, 404 states have (on average 3.099009900990099) internal successors, (1252), 422 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:40,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-01-28 14:32:40,111 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:32:40,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-01-28 14:32:40,112 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-01-28 14:32:40,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:32:40,112 INFO L85 PathProgramCache]: Analyzing trace with hash 2236150, now seen corresponding path program 1 times [2022-01-28 14:32:40,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:32:40,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747959237] [2022-01-28 14:32:40,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:32:40,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:32:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:32:40,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:32:40,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:32:40,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747959237] [2022-01-28 14:32:40,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747959237] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:32:40,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:32:40,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-28 14:32:40,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361272851] [2022-01-28 14:32:40,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:32:40,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-28 14:32:40,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:32:40,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-28 14:32:40,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-28 14:32:40,208 INFO L87 Difference]: Start difference. First operand has 423 states, 404 states have (on average 3.099009900990099) internal successors, (1252), 422 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:40,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:32:40,338 INFO L93 Difference]: Finished difference Result 408 states and 1203 transitions. [2022-01-28 14:32:40,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 14:32:40,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-01-28 14:32:40,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:32:40,357 INFO L225 Difference]: With dead ends: 408 [2022-01-28 14:32:40,357 INFO L226 Difference]: Without dead ends: 406 [2022-01-28 14:32:40,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-28 14:32:40,361 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:32:40,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 19 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:32:40,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-01-28 14:32:40,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2022-01-28 14:32:40,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 388 states have (on average 3.0927835051546393) internal successors, (1200), 405 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:40,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 1200 transitions. [2022-01-28 14:32:40,468 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 1200 transitions. Word has length 4 [2022-01-28 14:32:40,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:32:40,468 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 1200 transitions. [2022-01-28 14:32:40,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:40,469 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 1200 transitions. [2022-01-28 14:32:40,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-01-28 14:32:40,469 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:32:40,469 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-01-28 14:32:40,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-28 14:32:40,470 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-01-28 14:32:40,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:32:40,470 INFO L85 PathProgramCache]: Analyzing trace with hash 69326663, now seen corresponding path program 1 times [2022-01-28 14:32:40,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:32:40,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655812452] [2022-01-28 14:32:40,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:32:40,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:32:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-28 14:32:40,476 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-28 14:32:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-28 14:32:40,486 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-28 14:32:40,487 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-28 14:32:40,488 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 5 remaining) [2022-01-28 14:32:40,488 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (3 of 5 remaining) [2022-01-28 14:32:40,488 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (2 of 5 remaining) [2022-01-28 14:32:40,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 5 remaining) [2022-01-28 14:32:40,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 5 remaining) [2022-01-28 14:32:40,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-28 14:32:40,489 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-28 14:32:40,490 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-28 14:32:40,490 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-01-28 14:32:40,503 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-28 14:32:40,504 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-28 14:32:40,505 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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 [2022-01-28 14:32:40,506 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-28 14:32:40,506 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 78 flow [2022-01-28 14:32:40,600 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2157 states, 2115 states have (on average 3.8401891252955083) internal successors, (8122), 2156 states have internal predecessors, (8122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:40,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 2157 states, 2115 states have (on average 3.8401891252955083) internal successors, (8122), 2156 states have internal predecessors, (8122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:40,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-01-28 14:32:40,608 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:32:40,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-01-28 14:32:40,610 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-01-28 14:32:40,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:32:40,611 INFO L85 PathProgramCache]: Analyzing trace with hash 2947898, now seen corresponding path program 1 times [2022-01-28 14:32:40,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:32:40,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395728058] [2022-01-28 14:32:40,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:32:40,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:32:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:32:40,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:32:40,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:32:40,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395728058] [2022-01-28 14:32:40,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395728058] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:32:40,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:32:40,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-28 14:32:40,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134979947] [2022-01-28 14:32:40,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:32:40,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-28 14:32:40,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:32:40,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-28 14:32:40,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-28 14:32:40,643 INFO L87 Difference]: Start difference. First operand has 2157 states, 2115 states have (on average 3.8401891252955083) internal successors, (8122), 2156 states have internal predecessors, (8122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:40,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:32:40,732 INFO L93 Difference]: Finished difference Result 2133 states and 8026 transitions. [2022-01-28 14:32:40,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 14:32:40,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-01-28 14:32:40,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:32:40,759 INFO L225 Difference]: With dead ends: 2133 [2022-01-28 14:32:40,759 INFO L226 Difference]: Without dead ends: 2131 [2022-01-28 14:32:40,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-28 14:32:40,761 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 19 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:32:40,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 23 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:32:40,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2131 states. [2022-01-28 14:32:40,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2131 to 2131. [2022-01-28 14:32:40,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2131 states, 2090 states have (on average 3.838755980861244) internal successors, (8023), 2130 states have internal predecessors, (8023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:40,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2131 states to 2131 states and 8023 transitions. [2022-01-28 14:32:40,885 INFO L78 Accepts]: Start accepts. Automaton has 2131 states and 8023 transitions. Word has length 4 [2022-01-28 14:32:40,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:32:40,885 INFO L470 AbstractCegarLoop]: Abstraction has 2131 states and 8023 transitions. [2022-01-28 14:32:40,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:40,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2131 states and 8023 transitions. [2022-01-28 14:32:40,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-28 14:32:40,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:32:40,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-28 14:32:40,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-28 14:32:40,887 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-01-28 14:32:40,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:32:40,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1461614924, now seen corresponding path program 1 times [2022-01-28 14:32:40,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:32:40,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045147919] [2022-01-28 14:32:40,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:32:40,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:32:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:32:40,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 14:32:40,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:32:40,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045147919] [2022-01-28 14:32:40,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045147919] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:32:40,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:32:40,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-28 14:32:40,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288170442] [2022-01-28 14:32:40,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:32:40,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-28 14:32:40,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:32:40,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-28 14:32:40,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-28 14:32:40,940 INFO L87 Difference]: Start difference. First operand 2131 states and 8023 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:41,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:32:41,066 INFO L93 Difference]: Finished difference Result 3293 states and 11089 transitions. [2022-01-28 14:32:41,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-28 14:32:41,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-01-28 14:32:41,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:32:41,090 INFO L225 Difference]: With dead ends: 3293 [2022-01-28 14:32:41,090 INFO L226 Difference]: Without dead ends: 3199 [2022-01-28 14:32:41,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-28 14:32:41,092 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 50 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:32:41,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 29 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:32:41,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2022-01-28 14:32:41,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 2755. [2022-01-28 14:32:41,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2755 states, 2717 states have (on average 3.5888847994111153) internal successors, (9751), 2754 states have internal predecessors, (9751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:41,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 9751 transitions. [2022-01-28 14:32:41,205 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 9751 transitions. Word has length 6 [2022-01-28 14:32:41,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:32:41,205 INFO L470 AbstractCegarLoop]: Abstraction has 2755 states and 9751 transitions. [2022-01-28 14:32:41,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:41,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 9751 transitions. [2022-01-28 14:32:41,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-28 14:32:41,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:32:41,207 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-28 14:32:41,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-28 14:32:41,207 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-01-28 14:32:41,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:32:41,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1461603850, now seen corresponding path program 1 times [2022-01-28 14:32:41,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:32:41,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989665419] [2022-01-28 14:32:41,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:32:41,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:32:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-28 14:32:41,218 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-28 14:32:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-28 14:32:41,224 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-28 14:32:41,224 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-28 14:32:41,224 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (5 of 6 remaining) [2022-01-28 14:32:41,224 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (4 of 6 remaining) [2022-01-28 14:32:41,225 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (3 of 6 remaining) [2022-01-28 14:32:41,226 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (2 of 6 remaining) [2022-01-28 14:32:41,229 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 6 remaining) [2022-01-28 14:32:41,231 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 6 remaining) [2022-01-28 14:32:41,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-28 14:32:41,232 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-01-28 14:32:41,232 WARN L234 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-28 14:32:41,232 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-01-28 14:32:41,242 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-28 14:32:41,244 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-28 14:32:41,244 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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 [2022-01-28 14:32:41,244 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-01-28 14:32:41,245 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 28 transitions, 101 flow [2022-01-28 14:32:41,650 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 10875 states, 10786 states have (on average 4.605970702762841) internal successors, (49680), 10874 states have internal predecessors, (49680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:41,687 INFO L276 IsEmpty]: Start isEmpty. Operand has 10875 states, 10786 states have (on average 4.605970702762841) internal successors, (49680), 10874 states have internal predecessors, (49680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:41,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-01-28 14:32:41,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:32:41,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-01-28 14:32:41,689 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 3 more)] === [2022-01-28 14:32:41,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:32:41,689 INFO L85 PathProgramCache]: Analyzing trace with hash 3813566, now seen corresponding path program 1 times [2022-01-28 14:32:41,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:32:41,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285924307] [2022-01-28 14:32:41,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:32:41,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:32:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:32:41,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:32:41,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:32:41,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285924307] [2022-01-28 14:32:41,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285924307] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:32:41,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:32:41,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-28 14:32:41,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12027166] [2022-01-28 14:32:41,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:32:41,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-28 14:32:41,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:32:41,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-28 14:32:41,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-28 14:32:41,753 INFO L87 Difference]: Start difference. First operand has 10875 states, 10786 states have (on average 4.605970702762841) internal successors, (49680), 10874 states have internal predecessors, (49680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:42,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:32:42,016 INFO L93 Difference]: Finished difference Result 10840 states and 49515 transitions. [2022-01-28 14:32:42,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 14:32:42,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-01-28 14:32:42,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:32:42,128 INFO L225 Difference]: With dead ends: 10840 [2022-01-28 14:32:42,128 INFO L226 Difference]: Without dead ends: 10838 [2022-01-28 14:32:42,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-28 14:32:42,130 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 23 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:32:42,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 27 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:32:42,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10838 states. [2022-01-28 14:32:42,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10838 to 10838. [2022-01-28 14:32:42,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10838 states, 10750 states have (on average 4.605767441860465) internal successors, (49512), 10837 states have internal predecessors, (49512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:42,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10838 states to 10838 states and 49512 transitions. [2022-01-28 14:32:42,915 INFO L78 Accepts]: Start accepts. Automaton has 10838 states and 49512 transitions. Word has length 4 [2022-01-28 14:32:42,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:32:42,915 INFO L470 AbstractCegarLoop]: Abstraction has 10838 states and 49512 transitions. [2022-01-28 14:32:42,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:42,915 INFO L276 IsEmpty]: Start isEmpty. Operand 10838 states and 49512 transitions. [2022-01-28 14:32:42,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-28 14:32:42,916 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:32:42,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-28 14:32:42,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-28 14:32:42,917 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 3 more)] === [2022-01-28 14:32:42,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:32:42,917 INFO L85 PathProgramCache]: Analyzing trace with hash -630106864, now seen corresponding path program 1 times [2022-01-28 14:32:42,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:32:42,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575256602] [2022-01-28 14:32:42,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:32:42,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:32:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:32:42,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:32:42,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:32:42,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575256602] [2022-01-28 14:32:42,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575256602] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 14:32:42,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384709094] [2022-01-28 14:32:42,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:32:42,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 14:32:42,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 14:32:42,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 14:32:42,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-28 14:32:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:32:42,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-28 14:32:42,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 14:32:43,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:32:43,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 14:32:43,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:32:43,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384709094] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 14:32:43,064 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 14:32:43,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2022-01-28 14:32:43,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520394060] [2022-01-28 14:32:43,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 14:32:43,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-28 14:32:43,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:32:43,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-28 14:32:43,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-28 14:32:43,066 INFO L87 Difference]: Start difference. First operand 10838 states and 49512 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:43,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:32:43,545 INFO L93 Difference]: Finished difference Result 19096 states and 78036 transitions. [2022-01-28 14:32:43,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-28 14:32:43,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-01-28 14:32:43,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:32:43,747 INFO L225 Difference]: With dead ends: 19096 [2022-01-28 14:32:43,748 INFO L226 Difference]: Without dead ends: 18792 [2022-01-28 14:32:43,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-28 14:32:43,750 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 38 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:32:43,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 34 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:32:43,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18792 states. [2022-01-28 14:32:44,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18792 to 16354. [2022-01-28 14:32:44,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16354 states, 16269 states have (on average 4.284282992193742) internal successors, (69701), 16353 states have internal predecessors, (69701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:44,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16354 states to 16354 states and 69701 transitions. [2022-01-28 14:32:44,810 INFO L78 Accepts]: Start accepts. Automaton has 16354 states and 69701 transitions. Word has length 6 [2022-01-28 14:32:44,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:32:44,810 INFO L470 AbstractCegarLoop]: Abstraction has 16354 states and 69701 transitions. [2022-01-28 14:32:44,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:44,811 INFO L276 IsEmpty]: Start isEmpty. Operand 16354 states and 69701 transitions. [2022-01-28 14:32:44,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-28 14:32:44,812 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:32:44,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:32:44,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-28 14:32:45,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 14:32:45,020 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 3 more)] === [2022-01-28 14:32:45,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:32:45,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1961891033, now seen corresponding path program 1 times [2022-01-28 14:32:45,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:32:45,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241456706] [2022-01-28 14:32:45,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:32:45,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:32:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-28 14:32:45,025 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-28 14:32:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-28 14:32:45,029 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-28 14:32:45,039 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-28 14:32:45,040 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (6 of 7 remaining) [2022-01-28 14:32:45,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (5 of 7 remaining) [2022-01-28 14:32:45,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (4 of 7 remaining) [2022-01-28 14:32:45,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (3 of 7 remaining) [2022-01-28 14:32:45,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (2 of 7 remaining) [2022-01-28 14:32:45,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 7 remaining) [2022-01-28 14:32:45,041 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 7 remaining) [2022-01-28 14:32:45,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-28 14:32:45,041 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-01-28 14:32:45,041 WARN L234 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-28 14:32:45,041 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-01-28 14:32:45,049 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-28 14:32:45,050 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-28 14:32:45,051 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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 [2022-01-28 14:32:45,051 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-01-28 14:32:45,052 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 33 transitions, 126 flow [2022-01-28 14:32:46,822 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 54561 states, 54377 states have (on average 5.387976534196444) internal successors, (292982), 54560 states have internal predecessors, (292982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:46,944 INFO L276 IsEmpty]: Start isEmpty. Operand has 54561 states, 54377 states have (on average 5.387976534196444) internal successors, (292982), 54560 states have internal predecessors, (292982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:46,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-01-28 14:32:46,945 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:32:46,945 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-01-28 14:32:46,945 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 4 more)] === [2022-01-28 14:32:46,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:32:46,946 INFO L85 PathProgramCache]: Analyzing trace with hash 4833922, now seen corresponding path program 1 times [2022-01-28 14:32:46,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:32:46,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019153359] [2022-01-28 14:32:46,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:32:46,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:32:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:32:46,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:32:46,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:32:46,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019153359] [2022-01-28 14:32:46,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019153359] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:32:46,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:32:46,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-28 14:32:46,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207496126] [2022-01-28 14:32:46,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:32:46,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-28 14:32:46,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:32:46,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-28 14:32:46,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-28 14:32:47,090 INFO L87 Difference]: Start difference. First operand has 54561 states, 54377 states have (on average 5.387976534196444) internal successors, (292982), 54560 states have internal predecessors, (292982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:48,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:32:48,055 INFO L93 Difference]: Finished difference Result 54513 states and 292722 transitions. [2022-01-28 14:32:48,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 14:32:48,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-01-28 14:32:48,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:32:49,133 INFO L225 Difference]: With dead ends: 54513 [2022-01-28 14:32:49,133 INFO L226 Difference]: Without dead ends: 54511 [2022-01-28 14:32:49,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-28 14:32:49,134 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 27 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:32:49,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 31 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:32:49,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54511 states. [2022-01-28 14:32:51,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54511 to 54511. [2022-01-28 14:32:51,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54511 states, 54328 states have (on average 5.387995140627301) internal successors, (292719), 54510 states have internal predecessors, (292719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:52,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54511 states to 54511 states and 292719 transitions. [2022-01-28 14:32:52,277 INFO L78 Accepts]: Start accepts. Automaton has 54511 states and 292719 transitions. Word has length 4 [2022-01-28 14:32:52,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:32:52,278 INFO L470 AbstractCegarLoop]: Abstraction has 54511 states and 292719 transitions. [2022-01-28 14:32:52,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:52,278 INFO L276 IsEmpty]: Start isEmpty. Operand 54511 states and 292719 transitions. [2022-01-28 14:32:52,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-28 14:32:52,278 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:32:52,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-28 14:32:52,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-28 14:32:52,279 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 4 more)] === [2022-01-28 14:32:52,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:32:52,279 INFO L85 PathProgramCache]: Analyzing trace with hash 350441192, now seen corresponding path program 1 times [2022-01-28 14:32:52,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:32:52,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519687042] [2022-01-28 14:32:52,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:32:52,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:32:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:32:52,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:32:52,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:32:52,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519687042] [2022-01-28 14:32:52,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519687042] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 14:32:52,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123140068] [2022-01-28 14:32:52,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:32:52,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 14:32:52,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 14:32:52,305 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 14:32:52,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-28 14:32:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:32:52,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-28 14:32:52,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 14:32:52,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:32:52,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 14:32:52,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:32:52,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123140068] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 14:32:52,378 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 14:32:52,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2022-01-28 14:32:52,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983145987] [2022-01-28 14:32:52,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 14:32:52,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-28 14:32:52,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:32:52,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-28 14:32:52,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-28 14:32:52,380 INFO L87 Difference]: Start difference. First operand 54511 states and 292719 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:53,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:32:53,841 INFO L93 Difference]: Finished difference Result 102108 states and 489499 transitions. [2022-01-28 14:32:53,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-28 14:32:53,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-01-28 14:32:53,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:32:54,724 INFO L225 Difference]: With dead ends: 102108 [2022-01-28 14:32:54,724 INFO L226 Difference]: Without dead ends: 101140 [2022-01-28 14:32:54,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-28 14:32:54,725 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 52 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:32:54,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 39 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:32:55,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101140 states. [2022-01-28 14:32:58,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101140 to 89680. [2022-01-28 14:32:58,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89680 states, 89500 states have (on average 4.972145251396648) internal successors, (445007), 89679 states have internal predecessors, (445007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:59,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89680 states to 89680 states and 445007 transitions. [2022-01-28 14:32:59,463 INFO L78 Accepts]: Start accepts. Automaton has 89680 states and 445007 transitions. Word has length 6 [2022-01-28 14:32:59,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:32:59,464 INFO L470 AbstractCegarLoop]: Abstraction has 89680 states and 445007 transitions. [2022-01-28 14:32:59,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:32:59,464 INFO L276 IsEmpty]: Start isEmpty. Operand 89680 states and 445007 transitions. [2022-01-28 14:32:59,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-28 14:32:59,465 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:32:59,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:32:59,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-28 14:32:59,679 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,SelfDestructingSolverStorable11 [2022-01-28 14:32:59,680 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 4 more)] === [2022-01-28 14:32:59,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:32:59,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1766986721, now seen corresponding path program 1 times [2022-01-28 14:32:59,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:32:59,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441348095] [2022-01-28 14:32:59,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:32:59,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:32:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-28 14:32:59,685 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-28 14:32:59,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-28 14:32:59,689 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-28 14:32:59,689 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-28 14:32:59,690 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location threadErr0ASSERT_VIOLATIONASSERT (7 of 8 remaining) [2022-01-28 14:32:59,690 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (6 of 8 remaining) [2022-01-28 14:32:59,690 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (5 of 8 remaining) [2022-01-28 14:32:59,690 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (4 of 8 remaining) [2022-01-28 14:32:59,690 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (3 of 8 remaining) [2022-01-28 14:32:59,690 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (2 of 8 remaining) [2022-01-28 14:32:59,691 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 8 remaining) [2022-01-28 14:32:59,691 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 8 remaining) [2022-01-28 14:32:59,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-28 14:32:59,691 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-01-28 14:32:59,698 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 6 thread instances [2022-01-28 14:32:59,698 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-28 14:32:59,715 INFO L202 PluginConnector]: Adding new model fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 02:32:59 BasicIcfg [2022-01-28 14:32:59,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-28 14:32:59,716 INFO L158 Benchmark]: Toolchain (without parser) took 20177.79ms. Allocated memory was 179.3MB in the beginning and 7.3GB in the end (delta: 7.1GB). Free memory was 138.9MB in the beginning and 5.5GB in the end (delta: -5.4GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2022-01-28 14:32:59,716 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.14ms. Allocated memory is still 179.3MB. Free memory is still 139.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-28 14:32:59,716 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.05ms. Allocated memory is still 179.3MB. Free memory was 138.7MB in the beginning and 137.2MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-01-28 14:32:59,716 INFO L158 Benchmark]: Boogie Preprocessor took 10.27ms. Allocated memory is still 179.3MB. Free memory was 137.2MB in the beginning and 136.3MB in the end (delta: 905.4kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-28 14:32:59,717 INFO L158 Benchmark]: RCFGBuilder took 190.44ms. Allocated memory is still 179.3MB. Free memory was 136.3MB in the beginning and 128.5MB in the end (delta: 7.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-01-28 14:32:59,717 INFO L158 Benchmark]: TraceAbstraction took 19943.01ms. Allocated memory was 179.3MB in the beginning and 7.3GB in the end (delta: 7.1GB). Free memory was 127.9MB in the beginning and 5.5GB in the end (delta: -5.4GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2022-01-28 14:32:59,719 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.14ms. Allocated memory is still 179.3MB. Free memory is still 139.8MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.05ms. Allocated memory is still 179.3MB. Free memory was 138.7MB in the beginning and 137.2MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 10.27ms. Allocated memory is still 179.3MB. Free memory was 137.2MB in the beginning and 136.3MB in the end (delta: 905.4kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 190.44ms. Allocated memory is still 179.3MB. Free memory was 136.3MB in the beginning and 128.5MB in the end (delta: 7.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 19943.01ms. Allocated memory was 179.3MB in the beginning and 7.3GB in the end (delta: 7.1GB). Free memory was 127.9MB in the beginning and 5.5GB in the end (delta: -5.4GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 17]: assertion can be violated assertion can be violated We found a FailurePath: [L23] 0 x := 0; VAL [x=0] [L26] FORK 0 fork 0 thread(); VAL [x=0] [L16] 1 x := x + 1; VAL [x=1] [L26] FORK 0 fork 0 thread(); VAL [x=1] [L26] FORK 0 fork 0 thread(); VAL [x=1] [L16] 2 x := x + 1; VAL [x=2] [L16] 3 x := x + 1; VAL [x=3] [L17] 2 assert x < 3; VAL [x=3] - UnprovableResult [Line: 25]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 14 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 19 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.0s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 5 procedures, 24 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 9 mSDtfsCounter, 30 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=423occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 4 thread instances CFG has 6 procedures, 29 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 69 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69 mSDsluCounter, 52 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 83 IncrementalHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 22 mSDtfsCounter, 83 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2755occurred in iteration=2, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 444 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 24 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 5 thread instances CFG has 7 procedures, 34 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 3.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 61 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 61 mSDsluCounter, 61 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 51 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 116 IncrementalHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 26 mSDtfsCounter, 116 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16354occurred in iteration=2, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 2 MinimizatonAttempts, 2438 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 54 SizeOfPredicates, 0 NumberOfNonLiveVariables, 13 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 6 thread instances CFG has 8 procedures, 39 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 14.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 79 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 79 mSDsluCounter, 70 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 61 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 135 IncrementalHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 30 mSDtfsCounter, 135 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89680occurred in iteration=2, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.9s AutomataMinimizationTime, 2 MinimizatonAttempts, 11460 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 54 SizeOfPredicates, 0 NumberOfNonLiveVariables, 13 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-01-28 14:32:59,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...