/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/ForkInForkedProcedure02.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 17:04:49,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 17:04:49,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 17:04:49,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-01 17:04:49,239 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 [2022-03-01 17:04:49,270 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 17:04:49,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 17:04:49,271 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 17:04:49,271 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 17:04:49,271 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 17:04:49,271 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 17:04:49,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 17:04:49,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 17:04:49,272 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 17:04:49,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 17:04:49,273 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 17:04:49,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 17:04:49,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 17:04:49,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 17:04:49,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 17:04:49,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 17:04:49,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 17:04:49,273 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 17:04:49,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 17:04:49,273 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 17:04:49,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 17:04:49,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 17:04:49,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 17:04:49,274 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 17:04:49,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 17:04:49,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 17:04:49,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 17:04:49,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 17:04:49,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 17:04:49,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 17:04:49,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 17:04:49,275 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 17:04:49,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 17:04:49,275 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 17:04:49,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 17:04:49,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 17:04:49,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 17:04:49,508 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-01 17:04:49,509 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-01 17:04:49,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ForkInForkedProcedure02.bpl [2022-03-01 17:04:49,510 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ForkInForkedProcedure02.bpl' [2022-03-01 17:04:49,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 17:04:49,532 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-01 17:04:49,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 17:04:49,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 17:04:49,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 17:04:49,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:04:49" (1/1) ... [2022-03-01 17:04:49,548 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:04:49" (1/1) ... [2022-03-01 17:04:49,562 INFO L137 Inliner]: procedures = 4, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-01 17:04:49,563 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 17:04:49,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 17:04:49,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 17:04:49,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 17:04:49,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:04:49" (1/1) ... [2022-03-01 17:04:49,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:04:49" (1/1) ... [2022-03-01 17:04:49,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:04:49" (1/1) ... [2022-03-01 17:04:49,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:04:49" (1/1) ... [2022-03-01 17:04:49,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:04:49" (1/1) ... [2022-03-01 17:04:49,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:04:49" (1/1) ... [2022-03-01 17:04:49,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:04:49" (1/1) ... [2022-03-01 17:04:49,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 17:04:49,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 17:04:49,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 17:04:49,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 17:04:49,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:04:49" (1/1) ... [2022-03-01 17:04:49,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 17:04:49,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:04:49,597 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) [2022-03-01 17:04:49,603 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 [2022-03-01 17:04:49,624 INFO L124 BoogieDeclarations]: Specification and implementation of procedure bar given in one single declaration [2022-03-01 17:04:49,625 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2022-03-01 17:04:49,625 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2022-03-01 17:04:49,625 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2022-03-01 17:04:49,625 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-03-01 17:04:49,625 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-03-01 17:04:49,625 INFO L130 BoogieDeclarations]: Found specification of procedure increment [2022-03-01 17:04:49,625 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-01 17:04:49,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 17:04:49,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 17:04:49,626 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 17:04:49,658 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 17:04:49,659 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 17:04:49,708 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 17:04:49,713 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 17:04:49,713 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-01 17:04:49,714 INFO L202 PluginConnector]: Adding new model ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 05:04:49 BoogieIcfgContainer [2022-03-01 17:04:49,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 17:04:49,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 17:04:49,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 17:04:49,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 17:04:49,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:04:49" (1/2) ... [2022-03-01 17:04:49,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c93848e and model type ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 05:04:49, skipping insertion in model container [2022-03-01 17:04:49,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 05:04:49" (2/2) ... [2022-03-01 17:04:49,722 INFO L111 eAbstractionObserver]: Analyzing ICFG ForkInForkedProcedure02.bpl [2022-03-01 17:04:49,732 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 17:04:49,733 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 17:04:49,733 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 17:04:49,733 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 17:04:49,750 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:49,751 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:49,752 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:49,753 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:49,761 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:49,764 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:49,765 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:49,765 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-03-01 17:04:49,797 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 17:04:49,802 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 [2022-03-01 17:04:49,802 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-03-01 17:04:49,808 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 13 transitions, 36 flow [2022-03-01 17:04:49,818 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 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) [2022-03-01 17:04:49,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 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) [2022-03-01 17:04:49,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-03-01 17:04:49,823 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:49,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-03-01 17:04:49,824 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting barErr0ASSERT_VIOLATIONASSERT === [barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooThread1of1ForFork1Err2INUSE_VIOLATION] === [2022-03-01 17:04:49,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:49,829 INFO L85 PathProgramCache]: Analyzing trace with hash 39326157, now seen corresponding path program 1 times [2022-03-01 17:04:49,837 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:49,837 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853347873] [2022-03-01 17:04:49,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:49,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:50,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:50,028 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:50,028 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853347873] [2022-03-01 17:04:50,029 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853347873] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:04:50,029 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:04:50,029 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 17:04:50,030 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079868596] [2022-03-01 17:04:50,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:04:50,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 17:04:50,050 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:04:50,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 17:04:50,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-01 17:04:50,093 INFO L87 Difference]: Start difference. First operand has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 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 1.25) 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) [2022-03-01 17:04:50,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:04:50,161 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2022-03-01 17:04:50,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 17:04:50,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) 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 [2022-03-01 17:04:50,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:04:50,166 INFO L225 Difference]: With dead ends: 11 [2022-03-01 17:04:50,166 INFO L226 Difference]: Without dead ends: 0 [2022-03-01 17:04:50,167 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 [2022-03-01 17:04:50,170 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 12 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:04:50,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 11 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:04:50,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-01 17:04:50,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-01 17:04:50,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-03-01 17:04:50,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-01 17:04:50,198 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2022-03-01 17:04:50,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:04:50,199 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-01 17:04:50,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) 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) [2022-03-01 17:04:50,200 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-01 17:04:50,200 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-01 17:04:50,202 INFO L764 garLoopResultBuilder]: Registering result SAFE for location barErr0ASSERT_VIOLATIONASSERT (4 of 5 remaining) [2022-03-01 17:04:50,203 INFO L764 garLoopResultBuilder]: Registering result SAFE for location fooErr0INUSE_VIOLATION (3 of 5 remaining) [2022-03-01 17:04:50,203 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2022-03-01 17:04:50,203 INFO L764 garLoopResultBuilder]: Registering result SAFE for location barErr0ASSERT_VIOLATIONASSERT (1 of 5 remaining) [2022-03-01 17:04:50,204 INFO L764 garLoopResultBuilder]: Registering result SAFE for location fooThread1of1ForFork1Err2INUSE_VIOLATION (0 of 5 remaining) [2022-03-01 17:04:50,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 17:04:50,217 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-03-01 17:04:50,221 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-01 17:04:50,223 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-01 17:04:50,229 INFO L202 PluginConnector]: Adding new model ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.03 05:04:50 BasicIcfg [2022-03-01 17:04:50,230 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-01 17:04:50,230 INFO L158 Benchmark]: Toolchain (without parser) took 697.78ms. Allocated memory was 200.3MB in the beginning and 277.9MB in the end (delta: 77.6MB). Free memory was 165.3MB in the beginning and 257.2MB in the end (delta: -91.9MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 17:04:50,230 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.09ms. Allocated memory is still 200.3MB. Free memory was 166.4MB in the beginning and 166.3MB in the end (delta: 147.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 17:04:50,231 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.71ms. Allocated memory is still 200.3MB. Free memory was 165.3MB in the beginning and 163.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-01 17:04:50,231 INFO L158 Benchmark]: Boogie Preprocessor took 11.02ms. Allocated memory is still 200.3MB. Free memory was 163.7MB in the beginning and 162.8MB in the end (delta: 897.6kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 17:04:50,233 INFO L158 Benchmark]: RCFGBuilder took 138.71ms. Allocated memory is still 200.3MB. Free memory was 162.8MB in the beginning and 154.9MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-01 17:04:50,233 INFO L158 Benchmark]: TraceAbstraction took 513.81ms. Allocated memory was 200.3MB in the beginning and 277.9MB in the end (delta: 77.6MB). Free memory was 154.3MB in the beginning and 257.2MB in the end (delta: -102.9MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 17:04:50,234 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 200.3MB. Free memory was 166.4MB in the beginning and 166.3MB in the end (delta: 147.1kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.71ms. Allocated memory is still 200.3MB. Free memory was 165.3MB in the beginning and 163.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 11.02ms. Allocated memory is still 200.3MB. Free memory was 163.7MB in the beginning and 162.8MB in the end (delta: 897.6kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 138.71ms. Allocated memory is still 200.3MB. Free memory was 162.8MB in the beginning and 154.9MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 513.81ms. Allocated memory was 200.3MB in the beginning and 277.9MB in the end (delta: 77.6MB). Free memory was 154.3MB in the beginning and 257.2MB in the end (delta: -102.9MB). 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 - PositiveResult [Line: 35]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 26 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, 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, 12 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 6 mSDtfsCounter, 3 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=17occurred 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, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-01 17:04:50,259 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...