/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/multiple_fork_same_id.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 15:23:35,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 15:23:35,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 15:23:35,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 15:23:35,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 15:23:35,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 15:23:35,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 15:23:35,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 15:23:35,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 15:23:35,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 15:23:35,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 15:23:35,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 15:23:35,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 15:23:35,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 15:23:35,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 15:23:35,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 15:23:35,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 15:23:35,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 15:23:35,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 15:23:35,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 15:23:35,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 15:23:35,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 15:23:35,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 15:23:35,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 15:23:35,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-15 15:23:35,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-15 15:23:35,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-15 15:23:35,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-15 15:23:35,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-15 15:23:35,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-15 15:23:35,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-15 15:23:35,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-15 15:23:35,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-15 15:23:35,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-15 15:23:35,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-15 15:23:35,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-15 15:23:35,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-15 15:23:35,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-15 15:23:35,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 15:23:35,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 15:23:35,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 15:23:35,349 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 [2022-03-15 15:23:35,378 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 15:23:35,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 15:23:35,378 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-15 15:23:35,378 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-15 15:23:35,379 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 15:23:35,379 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 15:23:35,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 15:23:35,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 15:23:35,379 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 15:23:35,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 15:23:35,380 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 15:23:35,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 15:23:35,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 15:23:35,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 15:23:35,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 15:23:35,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 15:23:35,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 15:23:35,381 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 15:23:35,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 15:23:35,381 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 15:23:35,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 15:23:35,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 15:23:35,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 15:23:35,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 15:23:35,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 15:23:35,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 15:23:35,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 15:23:35,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-15 15:23:35,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 15:23:35,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 15:23:35,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 15:23:35,383 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-15 15:23:35,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 15:23:35,383 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 15:23:35,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 15:23:35,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 15:23:35,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 15:23:35,556 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 15:23:35,557 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 15:23:35,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/multiple_fork_same_id.bpl [2022-03-15 15:23:35,558 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/multiple_fork_same_id.bpl' [2022-03-15 15:23:35,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 15:23:35,576 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 15:23:35,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 15:23:35,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 15:23:35,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 15:23:35,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:23:35" (1/1) ... [2022-03-15 15:23:35,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:23:35" (1/1) ... [2022-03-15 15:23:35,594 INFO L137 Inliner]: procedures = 2, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 15:23:35,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 15:23:35,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 15:23:35,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 15:23:35,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 15:23:35,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:23:35" (1/1) ... [2022-03-15 15:23:35,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:23:35" (1/1) ... [2022-03-15 15:23:35,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:23:35" (1/1) ... [2022-03-15 15:23:35,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:23:35" (1/1) ... [2022-03-15 15:23:35,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:23:35" (1/1) ... [2022-03-15 15:23:35,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:23:35" (1/1) ... [2022-03-15 15:23:35,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:23:35" (1/1) ... [2022-03-15 15:23:35,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 15:23:35,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 15:23:35,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 15:23:35,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 15:23:35,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:23:35" (1/1) ... [2022-03-15 15:23:35,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 15:23:35,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:23:35,632 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) [2022-03-15 15:23:35,646 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 [2022-03-15 15:23:35,659 INFO L124 BoogieDeclarations]: Specification and implementation of procedure increment given in one single declaration [2022-03-15 15:23:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure increment [2022-03-15 15:23:35,659 INFO L138 BoogieDeclarations]: Found implementation of procedure increment [2022-03-15 15:23:35,659 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 15:23:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 15:23:35,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 15:23:35,660 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 15:23:35,689 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 15:23:35,690 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 15:23:35,758 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 15:23:35,764 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 15:23:35,764 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-15 15:23:35,767 INFO L202 PluginConnector]: Adding new model multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 03:23:35 BoogieIcfgContainer [2022-03-15 15:23:35,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 15:23:35,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 15:23:35,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 15:23:35,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 15:23:35,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:23:35" (1/2) ... [2022-03-15 15:23:35,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b38c5d9 and model type multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 03:23:35, skipping insertion in model container [2022-03-15 15:23:35,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 03:23:35" (2/2) ... [2022-03-15 15:23:35,776 INFO L111 eAbstractionObserver]: Analyzing ICFG multiple_fork_same_id.bpl [2022-03-15 15:23:35,788 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 15:23:35,788 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-15 15:23:35,789 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 15:23:35,789 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 15:23:35,814 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:23:35,815 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:23:35,818 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:23:35,818 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:23:35,819 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:23:35,819 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:23:35,819 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:23:35,819 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:23:35,820 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:23:35,820 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:23:35,822 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:23:35,822 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:23:35,835 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:23:35,837 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:23:35,838 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:23:35,839 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-03-15 15:23:35,887 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 15:23:35,895 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, mLazyFiniteAutomaton=false, 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, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 15:23:35,895 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-15 15:23:35,903 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 26 places, 18 transitions, 60 flow [2022-03-15 15:23:35,945 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 148 states, 142 states have (on average 2.3450704225352115) internal successors, (333), 147 states have internal predecessors, (333), 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) [2022-03-15 15:23:35,947 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 142 states have (on average 2.3450704225352115) internal successors, (333), 147 states have internal predecessors, (333), 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) [2022-03-15 15:23:35,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-03-15 15:23:35,953 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:23:35,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:23:35,954 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 15:23:35,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:23:35,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1187485940, now seen corresponding path program 1 times [2022-03-15 15:23:35,964 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:23:35,965 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127949917] [2022-03-15 15:23:35,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:23:35,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:23:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:36,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:36,164 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:23:36,164 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127949917] [2022-03-15 15:23:36,165 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127949917] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 15:23:36,165 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 15:23:36,165 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 15:23:36,166 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353401465] [2022-03-15 15:23:36,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 15:23:36,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 15:23:36,169 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:23:36,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 15:23:36,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-15 15:23:36,209 INFO L87 Difference]: Start difference. First operand has 148 states, 142 states have (on average 2.3450704225352115) internal successors, (333), 147 states have internal predecessors, (333), 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 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-03-15 15:23:36,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:23:36,321 INFO L93 Difference]: Finished difference Result 139 states and 312 transitions. [2022-03-15 15:23:36,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 15:23:36,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2022-03-15 15:23:36,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:23:36,332 INFO L225 Difference]: With dead ends: 139 [2022-03-15 15:23:36,333 INFO L226 Difference]: Without dead ends: 76 [2022-03-15 15:23:36,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-15 15:23:36,336 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 34 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 15:23:36,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 34 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 15:23:36,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-03-15 15:23:36,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-03-15 15:23:36,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 74 states have (on average 2.22972972972973) internal successors, (165), 75 states have internal predecessors, (165), 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) [2022-03-15 15:23:36,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 165 transitions. [2022-03-15 15:23:36,393 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 165 transitions. Word has length 7 [2022-03-15 15:23:36,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:23:36,393 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 165 transitions. [2022-03-15 15:23:36,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-03-15 15:23:36,393 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 165 transitions. [2022-03-15 15:23:36,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-03-15 15:23:36,394 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:23:36,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:23:36,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 15:23:36,395 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 15:23:36,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:23:36,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1047289463, now seen corresponding path program 1 times [2022-03-15 15:23:36,395 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:23:36,395 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931003496] [2022-03-15 15:23:36,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:23:36,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:23:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-15 15:23:36,401 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-15 15:23:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-15 15:23:36,414 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-15 15:23:36,414 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-15 15:23:36,415 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-03-15 15:23:36,416 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-03-15 15:23:36,417 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-03-15 15:23:36,417 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-03-15 15:23:36,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 15:23:36,419 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-15 15:23:36,422 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 15:23:36,422 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 15:23:36,429 INFO L202 PluginConnector]: Adding new model multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 03:23:36 BasicIcfg [2022-03-15 15:23:36,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 15:23:36,430 INFO L158 Benchmark]: Toolchain (without parser) took 853.88ms. Allocated memory was 194.0MB in the beginning and 254.8MB in the end (delta: 60.8MB). Free memory was 158.4MB in the beginning and 227.8MB in the end (delta: -69.4MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 15:23:36,430 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.11ms. Allocated memory is still 194.0MB. Free memory was 159.4MB in the beginning and 159.3MB in the end (delta: 73.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 15:23:36,431 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.96ms. Allocated memory is still 194.0MB. Free memory was 158.3MB in the beginning and 156.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 15:23:36,431 INFO L158 Benchmark]: Boogie Preprocessor took 10.98ms. Allocated memory is still 194.0MB. Free memory was 156.8MB in the beginning and 155.9MB in the end (delta: 842.7kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 15:23:36,431 INFO L158 Benchmark]: RCFGBuilder took 159.05ms. Allocated memory is still 194.0MB. Free memory was 155.9MB in the beginning and 148.0MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-15 15:23:36,432 INFO L158 Benchmark]: TraceAbstraction took 660.24ms. Allocated memory was 194.0MB in the beginning and 254.8MB in the end (delta: 60.8MB). Free memory was 147.5MB in the beginning and 227.8MB in the end (delta: -80.3MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 15:23:36,433 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 0.11ms. Allocated memory is still 194.0MB. Free memory was 159.4MB in the beginning and 159.3MB in the end (delta: 73.9kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.96ms. Allocated memory is still 194.0MB. Free memory was 158.3MB in the beginning and 156.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 10.98ms. Allocated memory is still 194.0MB. Free memory was 156.8MB in the beginning and 155.9MB in the end (delta: 842.7kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 159.05ms. Allocated memory is still 194.0MB. Free memory was 155.9MB in the beginning and 148.0MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 660.24ms. Allocated memory was 194.0MB in the beginning and 254.8MB in the end (delta: 60.8MB). Free memory was 147.5MB in the beginning and 227.8MB in the end (delta: -80.3MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 28]: assertion can be violated assertion can be violated We found a FailurePath: [L19] FORK 0 fork 42 increment(7); VAL [n=7] [L20] FORK 0 fork 42 increment(23); VAL [n=7] [L34] 2 res := n + 1; VAL [n=7, res=24] [L21] FORK 0 fork 42 increment(39); VAL [n=39, res=24] [L24] JOIN 2 join 42 assign x; VAL [n=39, res=24, x=24] [L28] 0 assert x == 8 || x == 40; VAL [n=39, res=24, x=24] - UnprovableResult [Line: 13]: 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: 19]: 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 23 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31 IncrementalHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 16 mSDtfsCounter, 31 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 42 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 RESULT: Ultimate proved your program to be incorrect! [2022-03-15 15:23:36,460 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...