/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-POR-NewStatesSleep-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/fork_unchanged_local_variables2.bpl
--------------------------------------------------------------------------------
This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd
[2022-02-09 08:20:07,290 INFO L177 SettingsManager]: Resetting all preferences to default values...
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[2022-02-09 08:20:07,403 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-POR-NewStatesSleep-NoLbe.epf
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[2022-02-09 08:20:07,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-02-09 08:20:07,435 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-02-09 08:20:07,435 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-02-09 08:20:07,436 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-02-09 08:20:07,436 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-02-09 08:20:07,436 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-02-09 08:20:07,436 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2022-02-09 08:20:07,437 INFO L138 SettingsManager]: * Use SBE=true
[2022-02-09 08:20:07,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-02-09 08:20:07,437 INFO L138 SettingsManager]: * sizeof long=4
[2022-02-09 08:20:07,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-02-09 08:20:07,438 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-02-09 08:20:07,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-02-09 08:20:07,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-02-09 08:20:07,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-02-09 08:20:07,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-02-09 08:20:07,438 INFO L138 SettingsManager]: * sizeof long double=12
[2022-02-09 08:20:07,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-02-09 08:20:07,438 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-02-09 08:20:07,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-02-09 08:20:07,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-02-09 08:20:07,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-02-09 08:20:07,439 INFO L138 SettingsManager]: * To the following directory=./dump/
[2022-02-09 08:20:07,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-02-09 08:20:07,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-09 08:20:07,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-02-09 08:20:07,440 INFO L138 SettingsManager]: * Construct finite automaton lazily=true
[2022-02-09 08:20:07,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2022-02-09 08:20:07,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-02-09 08:20:07,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-02-09 08:20:07,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-02-09 08:20:07,441 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2022-02-09 08:20:07,441 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA
[2022-02-09 08:20:07,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-02-09 08:20:07,442 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES
[2022-02-09 08:20:07,442 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2022-02-09 08:20:07,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-02-09 08:20:07,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-02-09 08:20:07,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-02-09 08:20:07,685 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser...
[2022-02-09 08:20:07,687 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized
[2022-02-09 08:20:07,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/fork_unchanged_local_variables2.bpl
[2022-02-09 08:20:07,688 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/fork_unchanged_local_variables2.bpl'
[2022-02-09 08:20:07,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-02-09 08:20:07,708 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2022-02-09 08:20:07,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-02-09 08:20:07,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-02-09 08:20:07,711 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2022-02-09 08:20:07,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:20:07" (1/1) ...
[2022-02-09 08:20:07,728 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:20:07" (1/1) ...
[2022-02-09 08:20:07,732 INFO L137 Inliner]: procedures = 2, calls = 1, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0
[2022-02-09 08:20:07,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-02-09 08:20:07,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-02-09 08:20:07,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-02-09 08:20:07,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-02-09 08:20:07,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:20:07" (1/1) ...
[2022-02-09 08:20:07,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:20:07" (1/1) ...
[2022-02-09 08:20:07,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:20:07" (1/1) ...
[2022-02-09 08:20:07,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:20:07" (1/1) ...
[2022-02-09 08:20:07,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:20:07" (1/1) ...
[2022-02-09 08:20:07,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:20:07" (1/1) ...
[2022-02-09 08:20:07,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:20:07" (1/1) ...
[2022-02-09 08:20:07,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-02-09 08:20:07,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-02-09 08:20:07,749 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-02-09 08:20:07,749 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-02-09 08:20:07,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:20:07" (1/1) ...
[2022-02-09 08:20:07,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-09 08:20:07,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 08:20:07,773 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)
[2022-02-09 08:20:07,775 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
[2022-02-09 08:20:07,802 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration
[2022-02-09 08:20:07,802 INFO L130 BoogieDeclarations]: Found specification of procedure foo
[2022-02-09 08:20:07,802 INFO L138 BoogieDeclarations]: Found implementation of procedure foo
[2022-02-09 08:20:07,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-02-09 08:20:07,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-02-09 08:20:07,803 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2022-02-09 08:20:07,836 INFO L234 CfgBuilder]: Building ICFG
[2022-02-09 08:20:07,837 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-02-09 08:20:07,895 INFO L275 CfgBuilder]: Performing block encoding
[2022-02-09 08:20:07,900 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-02-09 08:20:07,900 INFO L299 CfgBuilder]: Removed 0 assume(true) statements.
[2022-02-09 08:20:07,901 INFO L202 PluginConnector]: Adding new model fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 08:20:07 BoogieIcfgContainer
[2022-02-09 08:20:07,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-02-09 08:20:07,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-02-09 08:20:07,903 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-02-09 08:20:07,909 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-02-09 08:20:07,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:20:07" (1/2) ...
[2022-02-09 08:20:07,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4396473f and model type fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.02 08:20:07, skipping insertion in model container
[2022-02-09 08:20:07,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 08:20:07" (2/2) ...
[2022-02-09 08:20:07,912 INFO L111 eAbstractionObserver]: Analyzing ICFG fork_unchanged_local_variables2.bpl
[2022-02-09 08:20:07,921 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2022-02-09 08:20:07,922 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-02-09 08:20:07,922 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-02-09 08:20:07,922 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2022-02-09 08:20:07,944 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes.
[2022-02-09 08:20:07,947 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes.
[2022-02-09 08:20:07,948 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes.
[2022-02-09 08:20:07,948 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes.
[2022-02-09 08:20:07,950 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes.
[2022-02-09 08:20:07,951 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes.
[2022-02-09 08:20:07,953 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions.
[2022-02-09 08:20:07,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2022-02-09 08:20:07,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 08:20:07,983 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
[2022-02-09 08:20:07,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process
[2022-02-09 08:20:08,018 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-02-09 08:20:08,023 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=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, 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
[2022-02-09 08:20:08,024 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2022-02-09 08:20:08,054 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2022-02-09 08:20:08,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 08:20:08,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1810014354, now seen corresponding path program 1 times
[2022-02-09 08:20:08,065 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 08:20:08,066 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615784398]
[2022-02-09 08:20:08,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 08:20:08,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 08:20:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 08:20:08,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 08:20:08,173 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 08:20:08,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615784398]
[2022-02-09 08:20:08,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615784398] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-09 08:20:08,174 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-09 08:20:08,174 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-02-09 08:20:08,178 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363145002]
[2022-02-09 08:20:08,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-09 08:20:08,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-02-09 08:20:08,181 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 08:20:08,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-02-09 08:20:08,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-02-09 08:20:08,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2022-02-09 08:20:08,199 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-02-09 08:20:08,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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)
[2022-02-09 08:20:08,201 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.
[2022-02-09 08:20:08,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-02-09 08:20:08,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-02-09 08:20:08,237 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2022-02-09 08:20:08,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 08:20:08,238 INFO L85 PathProgramCache]: Analyzing trace with hash -2012947041, now seen corresponding path program 1 times
[2022-02-09 08:20:08,238 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 08:20:08,238 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503327905]
[2022-02-09 08:20:08,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 08:20:08,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 08:20:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-02-09 08:20:08,250 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-02-09 08:20:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-02-09 08:20:08,281 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2022-02-09 08:20:08,282 INFO L628 BasicCegarLoop]: Counterexample is feasible
[2022-02-09 08:20:08,283 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining)
[2022-02-09 08:20:08,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining)
[2022-02-09 08:20:08,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-02-09 08:20:08,290 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1]
[2022-02-09 08:20:08,293 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2022-02-09 08:20:08,293 INFO L180 ceAbstractionStarter]: Computing trace abstraction results
[2022-02-09 08:20:08,303 INFO L202 PluginConnector]: Adding new model fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.02 08:20:08 BasicIcfg
[2022-02-09 08:20:08,303 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-02-09 08:20:08,304 INFO L158 Benchmark]: Toolchain (without parser) took 595.38ms. Allocated memory is still 191.9MB. Free memory was 153.2MB in the beginning and 151.4MB in the end (delta: 1.9MB). Peak memory consumption was 3.3MB. Max. memory is 8.0GB.
[2022-02-09 08:20:08,304 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 191.9MB. Free memory was 154.2MB in the beginning and 154.2MB in the end (delta: 54.8kB). There was no memory consumed. Max. memory is 8.0GB.
[2022-02-09 08:20:08,304 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.68ms. Allocated memory is still 191.9MB. Free memory was 153.1MB in the beginning and 151.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
[2022-02-09 08:20:08,305 INFO L158 Benchmark]: Boogie Preprocessor took 12.86ms. Allocated memory is still 191.9MB. Free memory was 151.6MB in the beginning and 150.7MB in the end (delta: 934.8kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-02-09 08:20:08,305 INFO L158 Benchmark]: RCFGBuilder took 152.76ms. Allocated memory is still 191.9MB. Free memory was 150.6MB in the beginning and 142.6MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB.
[2022-02-09 08:20:08,306 INFO L158 Benchmark]: TraceAbstraction took 399.96ms. Allocated memory is still 191.9MB. Free memory was 142.1MB in the beginning and 151.4MB in the end (delta: -9.3MB). There was no memory consumed. Max. memory is 8.0GB.
[2022-02-09 08:20:08,307 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 0.12ms. Allocated memory is still 191.9MB. Free memory was 154.2MB in the beginning and 154.2MB in the end (delta: 54.8kB). There was no memory consumed. Max. memory is 8.0GB.
* Boogie Procedure Inliner took 22.68ms. Allocated memory is still 191.9MB. Free memory was 153.1MB in the beginning and 151.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
* Boogie Preprocessor took 12.86ms. Allocated memory is still 191.9MB. Free memory was 151.6MB in the beginning and 150.7MB in the end (delta: 934.8kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
* RCFGBuilder took 152.76ms. Allocated memory is still 191.9MB. Free memory was 150.6MB in the beginning and 142.6MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB.
* TraceAbstraction took 399.96ms. Allocated memory is still 191.9MB. Free memory was 142.1MB in the beginning and 151.4MB in the end (delta: -9.3MB). There was no memory consumed. Max. memory is 8.0GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: Independence relation benchmarks
ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 8, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 1, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 1, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 1, Maximal queried relation: 0, Independence queries for same thread: 5
- 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: 25]: assertion can be violated
assertion can be violated
We found a FailurePath:
[L17] 0 res := 0;
VAL [res=0]
[L18] 0 x := 0;
VAL [res=0, x=0]
[L20] COND TRUE 0 x < 3
VAL [res=0, x=0]
[L21] FORK 0 fork x foo();
VAL [res=0, x=0]
[L22] 0 resOld := res;
VAL [res=0, resOld=0, x=0]
[L35] 1 res := y;
VAL [res=0, res=2, resOld=0, x=0, y=2]
[L23] JOIN 1 join x assign res;
VAL [res=2, res=2, resOld=0, x=0, y=2]
[L24] COND FALSE 0 !(x > 0)
VAL [res=2, res=2, resOld=0, x=0, y=2]
[L27] 0 x := x + 1;
VAL [res=2, res=2, resOld=0, x=1, y=2]
[L20] COND TRUE 0 x < 3
VAL [res=2, res=2, resOld=0, x=1, y=2]
[L21] FORK 0 fork x foo();
VAL [res=2, resOld=0, x=1]
[L22] 0 resOld := res;
VAL [res=2, resOld=2, x=1]
[L35] 1 res := y;
VAL [res=2, res=3, resOld=2, x=1, y=3]
[L23] JOIN 1 join x assign res;
VAL [res=3, res=3, resOld=2, x=1, y=3]
[L24] COND TRUE 0 x > 0
VAL [res=3, res=3, resOld=2, x=1, y=3]
[L25] 0 assert resOld == res;
VAL [res=3, res=3, resOld=2, x=1, y=3]
- UnprovableResult [Line: 21]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users)
Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users)
Reason: Not analyzed.
- StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances
CFG has 3 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 23 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!
[2022-02-09 08:20:08,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0
[2022-02-09 08:20:08,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0
Received shutdown request...