/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/ForkInForkedProcedure01.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 03:51:49,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 03:51:49,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 03:51:49,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 03:51:49,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 03:51:49,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 03:51:49,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 03:51:49,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 03:51:49,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 03:51:49,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 03:51:49,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 03:51:49,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 03:51:49,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 03:51:49,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 03:51:49,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 03:51:49,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 03:51:49,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 03:51:49,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 03:51:49,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 03:51:49,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 03:51:49,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 03:51:49,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 03:51:49,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 03:51:49,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 03:51:49,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 03:51:49,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 03:51:49,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 03:51:49,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 03:51:49,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 03:51:49,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-18 03:51:49,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 03:51:49,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 03:51:49,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 03:51:49,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 03:51:49,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 03:51:49,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 03:51:49,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 03:51:49,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 03:51:49,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 03:51:49,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 03:51:49,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 03:51:49,724 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 03:51:49,740 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 03:51:49,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 03:51:49,740 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 03:51:49,740 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 03:51:49,741 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 03:51:49,741 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 03:51:49,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 03:51:49,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 03:51:49,741 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 03:51:49,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 03:51:49,742 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 03:51:49,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 03:51:49,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 03:51:49,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 03:51:49,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 03:51:49,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 03:51:49,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 03:51:49,742 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 03:51:49,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 03:51:49,742 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 03:51:49,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 03:51:49,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 03:51:49,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 03:51:49,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 03:51:49,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 03:51:49,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 03:51:49,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 03:51:49,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 03:51:49,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 03:51:49,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 03:51:49,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 03:51:49,743 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 03:51:49,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 03:51:49,754 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 03:51:49,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 03:51:49,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 03:51:49,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 03:51:49,988 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 03:51:49,989 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 03:51:49,989 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ForkInForkedProcedure01.bpl [2022-01-18 03:51:49,992 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ForkInForkedProcedure01.bpl' [2022-01-18 03:51:50,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 03:51:50,012 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 03:51:50,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 03:51:50,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 03:51:50,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 03:51:50,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:51:50" (1/1) ... [2022-01-18 03:51:50,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:51:50" (1/1) ... [2022-01-18 03:51:50,032 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 03:51:50,033 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 03:51:50,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 03:51:50,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 03:51:50,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 03:51:50,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:51:50" (1/1) ... [2022-01-18 03:51:50,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:51:50" (1/1) ... [2022-01-18 03:51:50,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:51:50" (1/1) ... [2022-01-18 03:51:50,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:51:50" (1/1) ... [2022-01-18 03:51:50,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:51:50" (1/1) ... [2022-01-18 03:51:50,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:51:50" (1/1) ... [2022-01-18 03:51:50,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:51:50" (1/1) ... [2022-01-18 03:51:50,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 03:51:50,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 03:51:50,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 03:51:50,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 03:51:50,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:51:50" (1/1) ... [2022-01-18 03:51:50,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 03:51:50,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:51:50,085 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 03:51:50,093 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 03:51:50,118 INFO L124 BoogieDeclarations]: Specification and implementation of procedure bar given in one single declaration [2022-01-18 03:51:50,119 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2022-01-18 03:51:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2022-01-18 03:51:50,119 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2022-01-18 03:51:50,119 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-01-18 03:51:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-01-18 03:51:50,120 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 03:51:50,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 03:51:50,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 03:51:50,121 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 03:51:50,153 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 03:51:50,154 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 03:51:50,203 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 03:51:50,207 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 03:51:50,207 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 03:51:50,208 INFO L202 PluginConnector]: Adding new model ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 03:51:50 BoogieIcfgContainer [2022-01-18 03:51:50,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 03:51:50,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 03:51:50,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 03:51:50,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 03:51:50,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:51:50" (1/2) ... [2022-01-18 03:51:50,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343ccf39 and model type ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 03:51:50, skipping insertion in model container [2022-01-18 03:51:50,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 03:51:50" (2/2) ... [2022-01-18 03:51:50,214 INFO L111 eAbstractionObserver]: Analyzing ICFG ForkInForkedProcedure01.bpl [2022-01-18 03:51:50,217 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 03:51:50,217 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 03:51:50,217 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 03:51:50,217 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 03:51:50,233 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:51:50,237 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:51:50,246 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:51:50,249 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:51:50,250 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:51:50,254 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-18 03:51:50,288 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 03:51:50,296 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 03:51:50,296 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 03:51:50,303 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 16 transitions, 51 flow [2022-01-18 03:51:50,333 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 37 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 36 states have internal predecessors, (59), 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 03:51:50,334 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 36 states have internal predecessors, (59), 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 03:51:50,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-18 03:51:50,338 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:51:50,339 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:51:50,339 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [fooErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, fooThread1of1ForFork1Err2INUSE_VIOLATION] === [2022-01-18 03:51:50,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:51:50,347 INFO L85 PathProgramCache]: Analyzing trace with hash 782366424, now seen corresponding path program 1 times [2022-01-18 03:51:50,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:51:50,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310952613] [2022-01-18 03:51:50,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:51:50,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:51:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:51:50,482 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 03:51:50,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:51:50,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310952613] [2022-01-18 03:51:50,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310952613] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:51:50,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:51:50,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 03:51:50,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375011287] [2022-01-18 03:51:50,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:51:50,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 03:51:50,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:51:50,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 03:51:50,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:51:50,527 INFO L87 Difference]: Start difference. First operand has 37 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 36 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 03:51:50,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:51:50,597 INFO L93 Difference]: Finished difference Result 40 states and 61 transitions. [2022-01-18 03:51:50,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 03:51:50,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 03:51:50,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:51:50,604 INFO L225 Difference]: With dead ends: 40 [2022-01-18 03:51:50,604 INFO L226 Difference]: Without dead ends: 24 [2022-01-18 03:51:50,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:51:50,607 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:51:50,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:51:50,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-01-18 03:51:50,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-01-18 03:51:50,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 23 states have internal predecessors, (37), 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 03:51:50,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 37 transitions. [2022-01-18 03:51:50,652 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 37 transitions. Word has length 8 [2022-01-18 03:51:50,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:51:50,653 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 37 transitions. [2022-01-18 03:51:50,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 03:51:50,653 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 37 transitions. [2022-01-18 03:51:50,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-18 03:51:50,653 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:51:50,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:51:50,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 03:51:50,654 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [fooErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, fooThread1of1ForFork1Err2INUSE_VIOLATION] === [2022-01-18 03:51:50,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:51:50,654 INFO L85 PathProgramCache]: Analyzing trace with hash 782458711, now seen corresponding path program 1 times [2022-01-18 03:51:50,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:51:50,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685465528] [2022-01-18 03:51:50,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:51:50,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:51:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:51:50,704 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 03:51:50,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:51:50,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685465528] [2022-01-18 03:51:50,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685465528] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:51:50,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:51:50,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 03:51:50,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375642990] [2022-01-18 03:51:50,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:51:50,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 03:51:50,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:51:50,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 03:51:50,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:51:50,707 INFO L87 Difference]: Start difference. First operand 24 states and 37 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 03:51:50,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:51:50,712 INFO L93 Difference]: Finished difference Result 18 states and 27 transitions. [2022-01-18 03:51:50,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 03:51:50,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 03:51:50,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:51:50,713 INFO L225 Difference]: With dead ends: 18 [2022-01-18 03:51:50,713 INFO L226 Difference]: Without dead ends: 18 [2022-01-18 03:51:50,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:51:50,714 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:51:50,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 9 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:51:50,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-01-18 03:51:50,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-01-18 03:51:50,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 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 03:51:50,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 27 transitions. [2022-01-18 03:51:50,717 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 27 transitions. Word has length 8 [2022-01-18 03:51:50,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:51:50,717 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 27 transitions. [2022-01-18 03:51:50,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 03:51:50,718 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 27 transitions. [2022-01-18 03:51:50,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-18 03:51:50,718 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:51:50,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:51:50,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 03:51:50,718 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [fooErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, fooThread1of1ForFork1Err2INUSE_VIOLATION] === [2022-01-18 03:51:50,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:51:50,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1516444335, now seen corresponding path program 1 times [2022-01-18 03:51:50,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:51:50,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408600678] [2022-01-18 03:51:50,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:51:50,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:51:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:51:50,725 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 03:51:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:51:50,752 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 03:51:50,753 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 03:51:50,754 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-01-18 03:51:50,761 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-18 03:51:50,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-18 03:51:50,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooThread1of1ForFork1Err2INUSE_VIOLATION (0 of 4 remaining) [2022-01-18 03:51:50,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 03:51:50,771 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-01-18 03:51:50,779 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 03:51:50,779 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 03:51:50,792 INFO L202 PluginConnector]: Adding new model ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 03:51:50 BasicIcfg [2022-01-18 03:51:50,793 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 03:51:50,794 INFO L158 Benchmark]: Toolchain (without parser) took 781.09ms. Allocated memory was 419.4MB in the beginning and 572.5MB in the end (delta: 153.1MB). Free memory was 387.0MB in the beginning and 545.2MB in the end (delta: -158.2MB). Peak memory consumption was 7.6MB. Max. memory is 16.0GB. [2022-01-18 03:51:50,794 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 419.4MB. Free memory is still 387.9MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 03:51:50,794 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.79ms. Allocated memory is still 419.4MB. Free memory was 386.9MB in the beginning and 385.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 03:51:50,797 INFO L158 Benchmark]: Boogie Preprocessor took 10.22ms. Allocated memory is still 419.4MB. Free memory was 385.4MB in the beginning and 384.5MB in the end (delta: 852.2kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 03:51:50,801 INFO L158 Benchmark]: RCFGBuilder took 163.03ms. Allocated memory is still 419.4MB. Free memory was 384.5MB in the beginning and 376.6MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. [2022-01-18 03:51:50,803 INFO L158 Benchmark]: TraceAbstraction took 583.11ms. Allocated memory was 419.4MB in the beginning and 572.5MB in the end (delta: 153.1MB). Free memory was 376.1MB in the beginning and 545.2MB in the end (delta: -169.1MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 03:51:50,804 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 0.10ms. Allocated memory is still 419.4MB. Free memory is still 387.9MB. There was no memory consumed. Max. memory is 16.0GB. * Boogie Procedure Inliner took 20.79ms. Allocated memory is still 419.4MB. Free memory was 386.9MB in the beginning and 385.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 10.22ms. Allocated memory is still 419.4MB. Free memory was 385.4MB in the beginning and 384.5MB in the end (delta: 852.2kB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 163.03ms. Allocated memory is still 419.4MB. Free memory was 384.5MB in the beginning and 376.6MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. * TraceAbstraction took 583.11ms. Allocated memory was 419.4MB in the beginning and 572.5MB in the end (delta: 153.1MB). Free memory was 376.1MB in the beginning and 545.2MB in the end (delta: -169.1MB). There was no memory consumed. 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 - CounterExampleResult [Line: 23]: assertion can be violated assertion can be violated We found a FailurePath: [L17] 0 x := 0; VAL [x=0] [L18] 0 g := 0; VAL [g=0, x=0] [L20] FORK 0 fork 1 foo(x); VAL [g=0, n=0, x=0] [L29] FORK 1 fork 2 bar(n); VAL [g=0, n=0, n=0, x=0] [L36] 2 res := 23; VAL [g=0, n=0, n=0, res=23, x=0] [L21] JOIN 2 join 2; VAL [g=0, n=0, n=0, res=23, x=0] [L30] 1 g := g + 1; VAL [g=1, n=0, n=0, res=23, x=0] [L23] 0 assert g == 0; VAL [g=1, n=0, n=0, res=23, x=0] - UnprovableResult [Line: 26]: 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. - 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. - UnprovableResult [Line: 26]: 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 5 procedures, 25 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 15 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 34 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-01-18 03:51:50,834 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...