/usr/bin/java -Xmx16000000000 -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/regression/ForkInLoop02-Incrementer.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 03:51:56,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 03:51:56,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 03:51:56,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 03:51:56,875 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 [2022-01-18 03:51:56,899 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 03:51:56,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 03:51:56,900 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 03:51:56,900 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 03:51:56,900 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 03:51:56,901 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 03:51:56,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 03:51:56,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 03:51:56,901 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 03:51:56,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 03:51:56,902 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 03:51:56,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 03:51:56,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 03:51:56,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 03:51:56,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 03:51:56,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 03:51:56,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 03:51:56,902 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 03:51:56,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 03:51:56,903 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 03:51:56,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 03:51:56,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 03:51:56,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 03:51:56,903 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 03:51:56,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 03:51:56,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 03:51:56,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 03:51:56,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 03:51:56,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 03:51:56,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 03:51:56,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 03:51:56,904 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 03:51:56,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 03:51:56,905 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 03:51:57,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 03:51:57,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 03:51:57,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 03:51:57,076 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 03:51:57,076 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 03:51:57,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ForkInLoop02-Incrementer.bpl [2022-01-18 03:51:57,077 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ForkInLoop02-Incrementer.bpl' [2022-01-18 03:51:57,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 03:51:57,091 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 03:51:57,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 03:51:57,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 03:51:57,092 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 03:51:57,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:51:57" (1/1) ... [2022-01-18 03:51:57,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:51:57" (1/1) ... [2022-01-18 03:51:57,113 INFO L137 Inliner]: procedures = 2, calls = 1, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 03:51:57,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 03:51:57,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 03:51:57,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 03:51:57,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 03:51:57,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:51:57" (1/1) ... [2022-01-18 03:51:57,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:51:57" (1/1) ... [2022-01-18 03:51:57,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:51:57" (1/1) ... [2022-01-18 03:51:57,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:51:57" (1/1) ... [2022-01-18 03:51:57,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:51:57" (1/1) ... [2022-01-18 03:51:57,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:51:57" (1/1) ... [2022-01-18 03:51:57,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:51:57" (1/1) ... [2022-01-18 03:51:57,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 03:51:57,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 03:51:57,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 03:51:57,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 03:51:57,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:51:57" (1/1) ... [2022-01-18 03:51:57,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 03:51:57,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:51:57,150 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) [2022-01-18 03:51:57,163 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 [2022-01-18 03:51:57,181 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2022-01-18 03:51:57,181 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-01-18 03:51:57,181 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-01-18 03:51:57,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 03:51:57,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 03:51:57,182 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 03:51:57,212 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 03:51:57,213 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 03:51:57,261 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 03:51:57,265 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 03:51:57,265 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-18 03:51:57,266 INFO L202 PluginConnector]: Adding new model ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 03:51:57 BoogieIcfgContainer [2022-01-18 03:51:57,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 03:51:57,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 03:51:57,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 03:51:57,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 03:51:57,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:51:57" (1/2) ... [2022-01-18 03:51:57,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501bb99e and model type ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 03:51:57, skipping insertion in model container [2022-01-18 03:51:57,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 03:51:57" (2/2) ... [2022-01-18 03:51:57,277 INFO L111 eAbstractionObserver]: Analyzing ICFG ForkInLoop02-Incrementer.bpl [2022-01-18 03:51:57,281 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 03:51:57,281 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 03:51:57,281 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 03:51:57,281 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 03:51:57,300 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 03:51:57,342 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 03:51:57,347 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 [2022-01-18 03:51:57,347 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 03:51:57,352 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 13 places, 10 transitions, 25 flow [2022-01-18 03:51:57,362 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 21 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 20 states have internal predecessors, (30), 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) [2022-01-18 03:51:57,363 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 20 states have internal predecessors, (30), 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) [2022-01-18 03:51:57,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-01-18 03:51:57,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:51:57,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-01-18 03:51:57,367 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT] === [2022-01-18 03:51:57,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:51:57,371 INFO L85 PathProgramCache]: Analyzing trace with hash 41972228, now seen corresponding path program 1 times [2022-01-18 03:51:57,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:51:57,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378632659] [2022-01-18 03:51:57,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:51:57,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:51:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:51:57,424 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 03:51:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:51:57,436 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 03:51:57,437 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 03:51:57,437 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 3 remaining) [2022-01-18 03:51:57,439 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (1 of 3 remaining) [2022-01-18 03:51:57,439 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (0 of 3 remaining) [2022-01-18 03:51:57,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 03:51:57,442 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-18 03:51:57,443 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-18 03:51:57,443 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-01-18 03:51:57,448 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 03:51:57,449 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 03:51:57,450 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 [2022-01-18 03:51:57,450 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 03:51:57,451 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 15 transitions, 42 flow [2022-01-18 03:51:57,462 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 112 states, 104 states have (on average 2.394230769230769) internal successors, (249), 111 states have internal predecessors, (249), 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) [2022-01-18 03:51:57,463 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 104 states have (on average 2.394230769230769) internal successors, (249), 111 states have internal predecessors, (249), 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) [2022-01-18 03:51:57,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-01-18 03:51:57,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:51:57,464 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-01-18 03:51:57,464 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting fooErr0ASSERT_VIOLATIONASSERT === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT] === [2022-01-18 03:51:57,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:51:57,465 INFO L85 PathProgramCache]: Analyzing trace with hash 56290799, now seen corresponding path program 1 times [2022-01-18 03:51:57,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:51:57,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108414786] [2022-01-18 03:51:57,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:51:57,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:51:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:51:57,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:51:57,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:51:57,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108414786] [2022-01-18 03:51:57,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108414786] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:51:57,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:51:57,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 03:51:57,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305759218] [2022-01-18 03:51:57,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:51:57,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 03:51:57,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:51:57,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 03:51:57,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 03:51:57,531 INFO L87 Difference]: Start difference. First operand has 112 states, 104 states have (on average 2.394230769230769) internal successors, (249), 111 states have internal predecessors, (249), 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 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-01-18 03:51:57,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:51:57,618 INFO L93 Difference]: Finished difference Result 101 states and 221 transitions. [2022-01-18 03:51:57,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 03:51:57,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-01-18 03:51:57,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:51:57,628 INFO L225 Difference]: With dead ends: 101 [2022-01-18 03:51:57,628 INFO L226 Difference]: Without dead ends: 99 [2022-01-18 03:51:57,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 03:51:57,643 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 17 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:51:57,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 20 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:51:57,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-01-18 03:51:57,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-01-18 03:51:57,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 92 states have (on average 2.369565217391304) internal successors, (218), 98 states have internal predecessors, (218), 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) [2022-01-18 03:51:57,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 218 transitions. [2022-01-18 03:51:57,699 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 218 transitions. Word has length 5 [2022-01-18 03:51:57,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:51:57,700 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 218 transitions. [2022-01-18 03:51:57,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-01-18 03:51:57,700 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 218 transitions. [2022-01-18 03:51:57,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-18 03:51:57,700 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:51:57,700 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-01-18 03:51:57,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 03:51:57,701 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT] === [2022-01-18 03:51:57,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:51:57,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1739256278, now seen corresponding path program 1 times [2022-01-18 03:51:57,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:51:57,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430703899] [2022-01-18 03:51:57,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:51:57,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:51:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:51:57,715 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 03:51:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:51:57,719 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 03:51:57,719 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 03:51:57,720 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 4 remaining) [2022-01-18 03:51:57,720 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (2 of 4 remaining) [2022-01-18 03:51:57,720 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (1 of 4 remaining) [2022-01-18 03:51:57,720 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (0 of 4 remaining) [2022-01-18 03:51:57,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 03:51:57,721 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-18 03:51:57,721 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-18 03:51:57,721 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-01-18 03:51:57,726 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 03:51:57,727 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 03:51:57,728 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 [2022-01-18 03:51:57,728 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-18 03:51:57,730 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 20 transitions, 61 flow [2022-01-18 03:51:57,762 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 579 states, 560 states have (on average 3.1285714285714286) internal successors, (1752), 578 states have internal predecessors, (1752), 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) [2022-01-18 03:51:57,763 INFO L276 IsEmpty]: Start isEmpty. Operand has 579 states, 560 states have (on average 3.1285714285714286) internal successors, (1752), 578 states have internal predecessors, (1752), 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) [2022-01-18 03:51:57,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-01-18 03:51:57,764 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:51:57,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-01-18 03:51:57,764 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting fooErr0ASSERT_VIOLATIONASSERT === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-01-18 03:51:57,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:51:57,765 INFO L85 PathProgramCache]: Analyzing trace with hash 75380999, now seen corresponding path program 1 times [2022-01-18 03:51:57,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:51:57,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73288399] [2022-01-18 03:51:57,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:51:57,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:51:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:51:57,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:51:57,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:51:57,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73288399] [2022-01-18 03:51:57,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73288399] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:51:57,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:51:57,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 03:51:57,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029458552] [2022-01-18 03:51:57,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:51:57,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 03:51:57,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:51:57,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 03:51:57,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 03:51:57,796 INFO L87 Difference]: Start difference. First operand has 579 states, 560 states have (on average 3.1285714285714286) internal successors, (1752), 578 states have internal predecessors, (1752), 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 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-01-18 03:51:57,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:51:57,836 INFO L93 Difference]: Finished difference Result 558 states and 1683 transitions. [2022-01-18 03:51:57,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 03:51:57,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-01-18 03:51:57,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:51:57,845 INFO L225 Difference]: With dead ends: 558 [2022-01-18 03:51:57,845 INFO L226 Difference]: Without dead ends: 556 [2022-01-18 03:51:57,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 03:51:57,850 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 22 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:51:57,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 24 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:51:57,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-01-18 03:51:57,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2022-01-18 03:51:57,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 538 states have (on average 3.1226765799256504) internal successors, (1680), 555 states have internal predecessors, (1680), 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) [2022-01-18 03:51:57,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1680 transitions. [2022-01-18 03:51:57,901 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1680 transitions. Word has length 5 [2022-01-18 03:51:57,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:51:57,902 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 1680 transitions. [2022-01-18 03:51:57,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-01-18 03:51:57,902 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1680 transitions. [2022-01-18 03:51:57,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-18 03:51:57,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:51:57,902 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:51:57,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 03:51:57,903 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting fooErr0ASSERT_VIOLATIONASSERT === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-01-18 03:51:57,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:51:57,903 INFO L85 PathProgramCache]: Analyzing trace with hash -592901609, now seen corresponding path program 1 times [2022-01-18 03:51:57,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:51:57,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616099111] [2022-01-18 03:51:57,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:51:57,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:51:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:51:57,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:51:57,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:51:57,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616099111] [2022-01-18 03:51:57,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616099111] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:51:57,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553220146] [2022-01-18 03:51:57,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:51:57,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:51:57,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:51:57,933 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) [2022-01-18 03:51:57,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 03:51:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:51:57,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 03:51:57,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:51:58,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:51:58,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:51:58,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:51:58,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553220146] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:51:58,020 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:51:58,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-01-18 03:51:58,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926131102] [2022-01-18 03:51:58,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:51:58,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 03:51:58,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:51:58,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 03:51:58,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 03:51:58,021 INFO L87 Difference]: Start difference. First operand 556 states and 1680 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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) [2022-01-18 03:51:58,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:51:58,054 INFO L93 Difference]: Finished difference Result 643 states and 1752 transitions. [2022-01-18 03:51:58,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 03:51:58,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 8 [2022-01-18 03:51:58,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:51:58,058 INFO L225 Difference]: With dead ends: 643 [2022-01-18 03:51:58,058 INFO L226 Difference]: Without dead ends: 613 [2022-01-18 03:51:58,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 03:51:58,059 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 30 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:51:58,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 31 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:51:58,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-01-18 03:51:58,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 541. [2022-01-18 03:51:58,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 526 states have (on average 2.946768060836502) internal successors, (1550), 540 states have internal predecessors, (1550), 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) [2022-01-18 03:51:58,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 1550 transitions. [2022-01-18 03:51:58,083 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 1550 transitions. Word has length 8 [2022-01-18 03:51:58,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:51:58,083 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 1550 transitions. [2022-01-18 03:51:58,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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) [2022-01-18 03:51:58,083 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 1550 transitions. [2022-01-18 03:51:58,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-18 03:51:58,084 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:51:58,084 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-01-18 03:51:58,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-18 03:51:58,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:51:58,300 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-01-18 03:51:58,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:51:58,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1555264738, now seen corresponding path program 1 times [2022-01-18 03:51:58,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:51:58,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103317696] [2022-01-18 03:51:58,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:51:58,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:51:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:51:58,310 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 03:51:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:51:58,314 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 03:51:58,314 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 03:51:58,314 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 5 remaining) [2022-01-18 03:51:58,314 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (3 of 5 remaining) [2022-01-18 03:51:58,314 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (2 of 5 remaining) [2022-01-18 03:51:58,315 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (1 of 5 remaining) [2022-01-18 03:51:58,315 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (0 of 5 remaining) [2022-01-18 03:51:58,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 03:51:58,315 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-01-18 03:51:58,315 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-18 03:51:58,315 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-01-18 03:51:58,321 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 03:51:58,322 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 03:51:58,323 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 [2022-01-18 03:51:58,323 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-18 03:51:58,323 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 25 transitions, 82 flow [2022-01-18 03:51:58,401 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2938 states, 2896 states have (on average 3.883632596685083) internal successors, (11247), 2937 states have internal predecessors, (11247), 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) [2022-01-18 03:51:58,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 2938 states, 2896 states have (on average 3.883632596685083) internal successors, (11247), 2937 states have internal predecessors, (11247), 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) [2022-01-18 03:51:58,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-01-18 03:51:58,409 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:51:58,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-01-18 03:51:58,410 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting fooErr0ASSERT_VIOLATIONASSERT === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-01-18 03:51:58,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:51:58,411 INFO L85 PathProgramCache]: Analyzing trace with hash 99242212, now seen corresponding path program 1 times [2022-01-18 03:51:58,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:51:58,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166772324] [2022-01-18 03:51:58,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:51:58,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:51:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:51:58,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:51:58,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:51:58,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166772324] [2022-01-18 03:51:58,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166772324] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:51:58,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:51:58,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 03:51:58,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328056616] [2022-01-18 03:51:58,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:51:58,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 03:51:58,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:51:58,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 03:51:58,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 03:51:58,455 INFO L87 Difference]: Start difference. First operand has 2938 states, 2896 states have (on average 3.883632596685083) internal successors, (11247), 2937 states have internal predecessors, (11247), 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 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-01-18 03:51:58,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:51:58,523 INFO L93 Difference]: Finished difference Result 2904 states and 11111 transitions. [2022-01-18 03:51:58,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 03:51:58,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-01-18 03:51:58,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:51:58,543 INFO L225 Difference]: With dead ends: 2904 [2022-01-18 03:51:58,543 INFO L226 Difference]: Without dead ends: 2902 [2022-01-18 03:51:58,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 03:51:58,545 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 27 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:51:58,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 28 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:51:58,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2022-01-18 03:51:58,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 2902. [2022-01-18 03:51:58,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2902 states, 2861 states have (on average 3.88255854596295) internal successors, (11108), 2901 states have internal predecessors, (11108), 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) [2022-01-18 03:51:58,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2902 states to 2902 states and 11108 transitions. [2022-01-18 03:51:58,638 INFO L78 Accepts]: Start accepts. Automaton has 2902 states and 11108 transitions. Word has length 5 [2022-01-18 03:51:58,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:51:58,638 INFO L470 AbstractCegarLoop]: Abstraction has 2902 states and 11108 transitions. [2022-01-18 03:51:58,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-01-18 03:51:58,639 INFO L276 IsEmpty]: Start isEmpty. Operand 2902 states and 11108 transitions. [2022-01-18 03:51:58,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-18 03:51:58,640 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:51:58,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:51:58,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 03:51:58,640 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting fooErr0ASSERT_VIOLATIONASSERT === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-01-18 03:51:58,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:51:58,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1587158147, now seen corresponding path program 1 times [2022-01-18 03:51:58,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:51:58,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135873840] [2022-01-18 03:51:58,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:51:58,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:51:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:51:58,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:51:58,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:51:58,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135873840] [2022-01-18 03:51:58,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135873840] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:51:58,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745954626] [2022-01-18 03:51:58,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:51:58,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:51:58,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:51:58,681 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) [2022-01-18 03:51:58,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 03:51:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:51:58,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 03:51:58,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:51:58,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:51:58,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:51:58,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:51:58,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745954626] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:51:58,758 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:51:58,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-01-18 03:51:58,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853134363] [2022-01-18 03:51:58,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:51:58,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 03:51:58,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:51:58,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 03:51:58,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 03:51:58,760 INFO L87 Difference]: Start difference. First operand 2902 states and 11108 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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) [2022-01-18 03:51:58,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:51:58,831 INFO L93 Difference]: Finished difference Result 4458 states and 15343 transitions. [2022-01-18 03:51:58,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 03:51:58,831 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 8 [2022-01-18 03:51:58,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:51:58,855 INFO L225 Difference]: With dead ends: 4458 [2022-01-18 03:51:58,855 INFO L226 Difference]: Without dead ends: 4364 [2022-01-18 03:51:58,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 03:51:58,857 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 47 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:51:58,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 36 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:51:58,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4364 states. [2022-01-18 03:51:59,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4364 to 3766. [2022-01-18 03:51:59,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3766 states, 3728 states have (on average 3.6555793991416308) internal successors, (13628), 3765 states have internal predecessors, (13628), 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) [2022-01-18 03:51:59,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3766 states to 3766 states and 13628 transitions. [2022-01-18 03:51:59,025 INFO L78 Accepts]: Start accepts. Automaton has 3766 states and 13628 transitions. Word has length 8 [2022-01-18 03:51:59,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:51:59,025 INFO L470 AbstractCegarLoop]: Abstraction has 3766 states and 13628 transitions. [2022-01-18 03:51:59,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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) [2022-01-18 03:51:59,025 INFO L276 IsEmpty]: Start isEmpty. Operand 3766 states and 13628 transitions. [2022-01-18 03:51:59,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-18 03:51:59,026 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:51:59,026 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:51:59,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 03:51:59,245 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,SelfDestructingSolverStorable7 [2022-01-18 03:51:59,246 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting fooErr0ASSERT_VIOLATIONASSERT === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-01-18 03:51:59,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:51:59,246 INFO L85 PathProgramCache]: Analyzing trace with hash -266683199, now seen corresponding path program 1 times [2022-01-18 03:51:59,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:51:59,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369449703] [2022-01-18 03:51:59,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:51:59,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:51:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:51:59,252 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 03:51:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:51:59,260 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 03:51:59,261 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 03:51:59,261 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location fooErr0ASSERT_VIOLATIONASSERT (5 of 6 remaining) [2022-01-18 03:51:59,261 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (4 of 6 remaining) [2022-01-18 03:51:59,261 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 6 remaining) [2022-01-18 03:51:59,261 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (2 of 6 remaining) [2022-01-18 03:51:59,261 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (1 of 6 remaining) [2022-01-18 03:51:59,261 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (0 of 6 remaining) [2022-01-18 03:51:59,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 03:51:59,262 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-01-18 03:51:59,265 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 4 thread instances [2022-01-18 03:51:59,265 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 03:51:59,276 INFO L202 PluginConnector]: Adding new model ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 03:51:59 BasicIcfg [2022-01-18 03:51:59,276 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 03:51:59,277 INFO L158 Benchmark]: Toolchain (without parser) took 2185.23ms. Allocated memory was 375.4MB in the beginning and 482.3MB in the end (delta: 107.0MB). Free memory was 336.7MB in the beginning and 404.2MB in the end (delta: -67.5MB). Peak memory consumption was 40.8MB. Max. memory is 16.0GB. [2022-01-18 03:51:59,277 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.09ms. Allocated memory is still 375.4MB. Free memory is still 337.8MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 03:51:59,277 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.82ms. Allocated memory is still 375.4MB. Free memory was 336.7MB in the beginning and 335.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 03:51:59,278 INFO L158 Benchmark]: Boogie Preprocessor took 9.49ms. Allocated memory is still 375.4MB. Free memory was 335.2MB in the beginning and 334.3MB in the end (delta: 857.4kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 03:51:59,281 INFO L158 Benchmark]: RCFGBuilder took 141.07ms. Allocated memory is still 375.4MB. Free memory was 334.2MB in the beginning and 326.2MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. [2022-01-18 03:51:59,282 INFO L158 Benchmark]: TraceAbstraction took 2008.60ms. Allocated memory was 375.4MB in the beginning and 482.3MB in the end (delta: 107.0MB). Free memory was 325.7MB in the beginning and 404.2MB in the end (delta: -78.5MB). Peak memory consumption was 30.3MB. Max. memory is 16.0GB. [2022-01-18 03:51:59,284 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 0.09ms. Allocated memory is still 375.4MB. Free memory is still 337.8MB. There was no memory consumed. Max. memory is 16.0GB. * Boogie Procedure Inliner took 22.82ms. Allocated memory is still 375.4MB. Free memory was 336.7MB in the beginning and 335.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 9.49ms. Allocated memory is still 375.4MB. Free memory was 335.2MB in the beginning and 334.3MB in the end (delta: 857.4kB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 141.07ms. Allocated memory is still 375.4MB. Free memory was 334.2MB in the beginning and 326.2MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. * TraceAbstraction took 2008.60ms. Allocated memory was 375.4MB in the beginning and 482.3MB in the end (delta: 107.0MB). Free memory was 325.7MB in the beginning and 404.2MB in the end (delta: -78.5MB). Peak memory consumption was 30.3MB. Max. memory is 16.0GB. * 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 - CounterExampleResult [Line: 31]: assertion can be violated assertion can be violated We found a FailurePath: [L17] 0 newid := 0; VAL [newid=0] [L18] 0 n := 0; VAL [n=0, newid=0] [L21] FORK 0 fork newid foo(); VAL [n=0, newid=0] [L30] 1 n := n + 1; VAL [n=1, newid=0] [L22] 0 newid := newid + 1; VAL [n=1, newid=1] [L21] FORK 0 fork newid foo(); VAL [n=1, newid=1] [L30] 2 n := n + 1; VAL [n=2, newid=1] [L22] 0 newid := newid + 1; VAL [n=2, newid=2] [L21] FORK 0 fork newid foo(); VAL [n=2, newid=2] [L30] 3 n := n + 1; VAL [n=3, newid=2] [L31] 1 assert n <= 2; VAL [n=3, newid=2] - UnprovableResult [Line: 20]: 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, 16 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=21occurred 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, 5 NumberOfCodeBlocks, 5 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, 21 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 9 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 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 3 thread instances CFG has 5 procedures, 26 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 55 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 60 IncrementalHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 22 mSDtfsCounter, 60 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=579occurred in iteration=0, 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: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 72 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 67 SizeOfPredicates, 0 NumberOfNonLiveVariables, 17 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 4 thread instances CFG has 6 procedures, 31 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 74 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 74 mSDsluCounter, 64 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 49 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 83 IncrementalHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 26 mSDtfsCounter, 83 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3766occurred 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: 0.3s AutomataMinimizationTime, 2 MinimizatonAttempts, 598 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 67 SizeOfPredicates, 0 NumberOfNonLiveVariables, 17 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! [2022-01-18 03:51:59,310 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...