/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 20:35:09,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 20:35:09,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 20:35:09,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 20:35:09,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 20:35:09,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 20:35:09,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 20:35:09,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 20:35:09,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 20:35:09,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 20:35:09,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 20:35:09,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 20:35:09,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 20:35:09,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 20:35:09,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 20:35:09,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 20:35:09,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 20:35:09,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 20:35:09,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 20:35:09,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 20:35:09,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 20:35:09,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 20:35:09,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 20:35:09,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 20:35:09,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-15 20:35:09,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 20:35:09,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 20:35:09,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 20:35:09,295 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 20:35:09,307 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 20:35:09,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 20:35:09,308 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 20:35:09,308 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 20:35:09,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 20:35:09,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 20:35:09,309 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 20:35:09,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 20:35:09,309 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 20:35:09,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 20:35:09,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 20:35:09,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 20:35:09,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 20:35:09,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 20:35:09,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 20:35:09,310 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 20:35:09,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 20:35:09,310 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 20:35:09,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 20:35:09,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 20:35:09,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 20:35:09,311 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 20:35:09,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 20:35:09,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 20:35:09,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 20:35:09,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 20:35:09,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 20:35:09,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 20:35:09,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 20:35:09,312 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 20:35:09,312 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 20:35:09,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 20:35:09,312 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 20:35:09,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 20:35:09,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 20:35:09,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 20:35:09,514 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 20:35:09,515 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 20:35:09,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl [2022-03-15 20:35:09,516 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl' [2022-03-15 20:35:09,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 20:35:09,534 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 20:35:09,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 20:35:09,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 20:35:09,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 20:35:09,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:09" (1/1) ... [2022-03-15 20:35:09,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:09" (1/1) ... [2022-03-15 20:35:09,557 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 20:35:09,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 20:35:09,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 20:35:09,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 20:35:09,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 20:35:09,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:09" (1/1) ... [2022-03-15 20:35:09,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:09" (1/1) ... [2022-03-15 20:35:09,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:09" (1/1) ... [2022-03-15 20:35:09,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:09" (1/1) ... [2022-03-15 20:35:09,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:09" (1/1) ... [2022-03-15 20:35:09,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:09" (1/1) ... [2022-03-15 20:35:09,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:09" (1/1) ... [2022-03-15 20:35:09,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 20:35:09,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 20:35:09,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 20:35:09,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 20:35:09,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:09" (1/1) ... [2022-03-15 20:35:09,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 20:35:09,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:35:09,604 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 20:35:09,622 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 20:35:09,632 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process2 given in one single declaration [2022-03-15 20:35:09,632 INFO L130 BoogieDeclarations]: Found specification of procedure Process2 [2022-03-15 20:35:09,633 INFO L138 BoogieDeclarations]: Found implementation of procedure Process2 [2022-03-15 20:35:09,633 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2022-03-15 20:35:09,633 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2022-03-15 20:35:09,633 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2022-03-15 20:35:09,633 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 20:35:09,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 20:35:09,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 20:35:09,634 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Clock given in one single declaration [2022-03-15 20:35:09,634 INFO L130 BoogieDeclarations]: Found specification of procedure Clock [2022-03-15 20:35:09,634 INFO L138 BoogieDeclarations]: Found implementation of procedure Clock [2022-03-15 20:35:09,635 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 20:35:09,667 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 20:35:09,668 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 20:35:09,782 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 20:35:09,799 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 20:35:09,800 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-15 20:35:09,801 INFO L202 PluginConnector]: Adding new model Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 08:35:09 BoogieIcfgContainer [2022-03-15 20:35:09,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 20:35:09,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 20:35:09,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 20:35:09,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 20:35:09,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:09" (1/2) ... [2022-03-15 20:35:09,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35cd5174 and model type Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 08:35:09, skipping insertion in model container [2022-03-15 20:35:09,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 08:35:09" (2/2) ... [2022-03-15 20:35:09,806 INFO L111 eAbstractionObserver]: Analyzing ICFG Fischer.bpl [2022-03-15 20:35:09,811 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 20:35:09,811 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 20:35:09,811 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-03-15 20:35:09,811 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 20:35:09,827 WARN L322 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:35:09,828 WARN L322 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:35:09,829 WARN L322 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:35:09,829 WARN L322 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:35:09,829 WARN L322 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:35:09,829 WARN L322 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:35:09,830 WARN L322 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:35:09,830 WARN L322 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:35:09,831 WARN L322 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:35:09,831 WARN L322 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:35:09,832 WARN L322 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:35:09,832 WARN L322 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:35:09,832 WARN L322 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:35:09,832 WARN L322 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:35:09,833 WARN L322 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:35:09,833 WARN L322 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:35:09,853 WARN L322 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:35:09,854 WARN L322 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:35:09,854 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-03-15 20:35:09,898 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 20:35:09,903 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, 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=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 20:35:09,903 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-03-15 20:35:09,910 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 20:35:09,917 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 46 transitions, 107 flow [2022-03-15 20:35:09,919 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 46 transitions, 107 flow [2022-03-15 20:35:09,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 46 transitions, 107 flow [2022-03-15 20:35:09,941 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2022-03-15 20:35:09,941 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-03-15 20:35:09,944 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 5/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 112 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2022-03-15 20:35:09,945 INFO L116 LiptonReduction]: Number of co-enabled transitions 818 [2022-03-15 20:35:10,046 INFO L131 LiptonReduction]: Checked pairs total: 2376 [2022-03-15 20:35:10,047 INFO L133 LiptonReduction]: Total number of compositions: 6 [2022-03-15 20:35:10,052 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 40 transitions, 95 flow [2022-03-15 20:35:10,120 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 812 states, 809 states have (on average 3.626699629171817) internal successors, (2934), 811 states have internal predecessors, (2934), 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 20:35:10,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 812 states, 809 states have (on average 3.626699629171817) internal successors, (2934), 811 states have internal predecessors, (2934), 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 20:35:10,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-03-15 20:35:10,134 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:35:10,135 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-03-15 20:35:10,135 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting Process1Err0ASSERT_VIOLATIONASSERT === [Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 3 more)] === [2022-03-15 20:35:10,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:35:10,139 INFO L85 PathProgramCache]: Analyzing trace with hash 170514105, now seen corresponding path program 1 times [2022-03-15 20:35:10,161 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:35:10,161 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644173083] [2022-03-15 20:35:10,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:35:10,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:35:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:35:10,241 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 20:35:10,242 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:35:10,242 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644173083] [2022-03-15 20:35:10,243 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644173083] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:35:10,243 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:35:10,243 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-03-15 20:35:10,244 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1167056532] [2022-03-15 20:35:10,245 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:35:10,246 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:35:10,252 INFO L252 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2022-03-15 20:35:10,253 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:35:10,255 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 20:35:10,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 20:35:10,256 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:35:10,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 20:35:10,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 20:35:10,323 INFO L87 Difference]: Start difference. First operand has 812 states, 809 states have (on average 3.626699629171817) internal successors, (2934), 811 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2022-03-15 20:35:10,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:35:10,389 INFO L93 Difference]: Finished difference Result 395 states and 1383 transitions. [2022-03-15 20:35:10,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 20:35:10,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 [2022-03-15 20:35:10,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:35:10,425 INFO L225 Difference]: With dead ends: 395 [2022-03-15 20:35:10,425 INFO L226 Difference]: Without dead ends: 395 [2022-03-15 20:35:10,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 20:35:10,428 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 24 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 20:35:10,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 52 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 20:35:10,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-03-15 20:35:10,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 391. [2022-03-15 20:35:10,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 391 states have (on average 3.501278772378517) internal successors, (1369), 390 states have internal predecessors, (1369), 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 20:35:10,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1369 transitions. [2022-03-15 20:35:10,517 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1369 transitions. Word has length 5 [2022-03-15 20:35:10,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:35:10,517 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 1369 transitions. [2022-03-15 20:35:10,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2022-03-15 20:35:10,518 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1369 transitions. [2022-03-15 20:35:10,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-03-15 20:35:10,519 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:35:10,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:35:10,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 20:35:10,519 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting Process2Err0ASSERT_VIOLATIONASSERT === [Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 3 more)] === [2022-03-15 20:35:10,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:35:10,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1613855551, now seen corresponding path program 1 times [2022-03-15 20:35:10,521 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:35:10,521 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011142060] [2022-03-15 20:35:10,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:35:10,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:35:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:35:10,544 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 20:35:10,544 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:35:10,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011142060] [2022-03-15 20:35:10,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011142060] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:35:10,545 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:35:10,545 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 20:35:10,545 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [660304891] [2022-03-15 20:35:10,545 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:35:10,546 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:35:10,547 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2022-03-15 20:35:10,547 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:35:10,602 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [2861#(not (= 2 lock)), 2862#(not (= lock 1))] [2022-03-15 20:35:10,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 20:35:10,604 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:35:10,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 20:35:10,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-15 20:35:10,604 INFO L87 Difference]: Start difference. First operand 391 states and 1369 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 20:35:10,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:35:10,690 INFO L93 Difference]: Finished difference Result 680 states and 2283 transitions. [2022-03-15 20:35:10,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 20:35:10,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 9 [2022-03-15 20:35:10,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:35:10,702 INFO L225 Difference]: With dead ends: 680 [2022-03-15 20:35:10,702 INFO L226 Difference]: Without dead ends: 488 [2022-03-15 20:35:10,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-15 20:35:10,703 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 82 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 20:35:10,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 100 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 20:35:10,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-03-15 20:35:10,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 372. [2022-03-15 20:35:10,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 372 states have (on average 3.25) internal successors, (1209), 371 states have internal predecessors, (1209), 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 20:35:10,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1209 transitions. [2022-03-15 20:35:10,732 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1209 transitions. Word has length 9 [2022-03-15 20:35:10,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:35:10,732 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 1209 transitions. [2022-03-15 20:35:10,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 20:35:10,733 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1209 transitions. [2022-03-15 20:35:10,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 20:35:10,734 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:35:10,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:35:10,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 20:35:10,735 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting Process1Err0ASSERT_VIOLATIONASSERT === [Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 3 more)] === [2022-03-15 20:35:10,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:35:10,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1139610252, now seen corresponding path program 1 times [2022-03-15 20:35:10,736 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:35:10,736 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671262945] [2022-03-15 20:35:10,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:35:10,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:35:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:35:10,765 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 20:35:10,765 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:35:10,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671262945] [2022-03-15 20:35:10,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671262945] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:35:10,766 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:35:10,766 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 20:35:10,766 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [837253296] [2022-03-15 20:35:10,766 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:35:10,767 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:35:10,769 INFO L252 McrAutomatonBuilder]: Finished intersection with 39 states and 60 transitions. [2022-03-15 20:35:10,769 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:35:10,913 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [4295#(not (= lock 1)), 4298#(or (<= 2 lock) (= lock 1)), 4297#(not (= 2 lock)), 4296#(not (= lock 0))] [2022-03-15 20:35:10,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 20:35:10,913 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:35:10,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 20:35:10,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-15 20:35:10,916 INFO L87 Difference]: Start difference. First operand 372 states and 1209 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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 20:35:11,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:35:11,017 INFO L93 Difference]: Finished difference Result 480 states and 1567 transitions. [2022-03-15 20:35:11,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 20:35:11,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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 16 [2022-03-15 20:35:11,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:35:11,021 INFO L225 Difference]: With dead ends: 480 [2022-03-15 20:35:11,021 INFO L226 Difference]: Without dead ends: 480 [2022-03-15 20:35:11,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-03-15 20:35:11,024 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 97 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 20:35:11,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 130 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 20:35:11,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-03-15 20:35:11,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 420. [2022-03-15 20:35:11,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 420 states have (on average 3.2404761904761905) internal successors, (1361), 419 states have internal predecessors, (1361), 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 20:35:11,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1361 transitions. [2022-03-15 20:35:11,055 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1361 transitions. Word has length 16 [2022-03-15 20:35:11,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:35:11,056 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 1361 transitions. [2022-03-15 20:35:11,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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 20:35:11,056 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1361 transitions. [2022-03-15 20:35:11,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-15 20:35:11,058 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:35:11,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:35:11,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 20:35:11,060 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting Process2Err0ASSERT_VIOLATIONASSERT === [Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 3 more)] === [2022-03-15 20:35:11,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:35:11,061 INFO L85 PathProgramCache]: Analyzing trace with hash -609421447, now seen corresponding path program 1 times [2022-03-15 20:35:11,062 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:35:11,062 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177839392] [2022-03-15 20:35:11,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:35:11,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:35:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:35:11,128 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 20:35:11,129 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:35:11,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177839392] [2022-03-15 20:35:11,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177839392] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:35:11,129 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:35:11,129 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 20:35:11,129 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1729594460] [2022-03-15 20:35:11,129 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:35:11,131 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:35:11,136 INFO L252 McrAutomatonBuilder]: Finished intersection with 55 states and 77 transitions. [2022-03-15 20:35:11,136 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:35:11,292 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5629#(or (<= 1 wait) (not (<= clk Process1Thread1of1ForFork1_deadline)))] [2022-03-15 20:35:11,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 20:35:11,293 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:35:11,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 20:35:11,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-15 20:35:11,293 INFO L87 Difference]: Start difference. First operand 420 states and 1361 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:11,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:35:11,314 INFO L93 Difference]: Finished difference Result 441 states and 1405 transitions. [2022-03-15 20:35:11,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 20:35:11,314 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-03-15 20:35:11,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:35:11,316 INFO L225 Difference]: With dead ends: 441 [2022-03-15 20:35:11,316 INFO L226 Difference]: Without dead ends: 441 [2022-03-15 20:35:11,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-15 20:35:11,317 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 56 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 20:35:11,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 54 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 20:35:11,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-03-15 20:35:11,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2022-03-15 20:35:11,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 441 states have (on average 3.1859410430839) internal successors, (1405), 440 states have internal predecessors, (1405), 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 20:35:11,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 1405 transitions. [2022-03-15 20:35:11,327 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 1405 transitions. Word has length 23 [2022-03-15 20:35:11,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:35:11,327 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 1405 transitions. [2022-03-15 20:35:11,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:11,328 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 1405 transitions. [2022-03-15 20:35:11,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 20:35:11,328 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:35:11,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:35:11,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-15 20:35:11,329 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting Process2Err0ASSERT_VIOLATIONASSERT === [Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 3 more)] === [2022-03-15 20:35:11,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:35:11,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1375634014, now seen corresponding path program 1 times [2022-03-15 20:35:11,330 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:35:11,330 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793391777] [2022-03-15 20:35:11,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:35:11,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:35:11,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:35:11,364 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 20:35:11,364 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:35:11,364 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793391777] [2022-03-15 20:35:11,364 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793391777] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:35:11,364 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:35:11,364 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 20:35:11,365 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1226957197] [2022-03-15 20:35:11,365 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:35:11,366 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:35:11,369 INFO L252 McrAutomatonBuilder]: Finished intersection with 48 states and 69 transitions. [2022-03-15 20:35:11,369 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:35:11,532 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [6961#(not (<= Process2Thread1of1ForFork2_deadline clk)), 6962#(not (<= wait 0)), 6963#(or (not (<= clk Process2Thread1of1ForFork2_deadline)) (not (<= wait 0)))] [2022-03-15 20:35:11,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 20:35:11,532 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:35:11,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 20:35:11,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-03-15 20:35:11,533 INFO L87 Difference]: Start difference. First operand 441 states and 1405 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:11,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:35:11,644 INFO L93 Difference]: Finished difference Result 803 states and 2526 transitions. [2022-03-15 20:35:11,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 20:35:11,645 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-03-15 20:35:11,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:35:11,648 INFO L225 Difference]: With dead ends: 803 [2022-03-15 20:35:11,648 INFO L226 Difference]: Without dead ends: 719 [2022-03-15 20:35:11,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-03-15 20:35:11,649 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 127 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 20:35:11,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 242 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 20:35:11,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-03-15 20:35:11,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 447. [2022-03-15 20:35:11,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 447 states have (on average 3.145413870246085) internal successors, (1406), 446 states have internal predecessors, (1406), 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 20:35:11,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1406 transitions. [2022-03-15 20:35:11,662 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1406 transitions. Word has length 24 [2022-03-15 20:35:11,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:35:11,663 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 1406 transitions. [2022-03-15 20:35:11,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:11,663 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1406 transitions. [2022-03-15 20:35:11,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-15 20:35:11,664 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:35:11,664 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:35:11,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-15 20:35:11,664 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting Process2Err0ASSERT_VIOLATIONASSERT === [Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 3 more)] === [2022-03-15 20:35:11,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:35:11,664 INFO L85 PathProgramCache]: Analyzing trace with hash -411564627, now seen corresponding path program 2 times [2022-03-15 20:35:11,665 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:35:11,665 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985961207] [2022-03-15 20:35:11,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:35:11,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:35:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:35:11,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:35:11,701 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:35:11,701 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985961207] [2022-03-15 20:35:11,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985961207] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:35:11,702 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:35:11,702 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 20:35:11,702 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1075526835] [2022-03-15 20:35:11,702 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:35:11,704 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:35:11,707 INFO L252 McrAutomatonBuilder]: Finished intersection with 39 states and 50 transitions. [2022-03-15 20:35:11,707 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:35:11,777 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 20:35:11,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 20:35:11,777 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:35:11,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 20:35:11,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-15 20:35:11,778 INFO L87 Difference]: Start difference. First operand 447 states and 1406 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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 20:35:11,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:35:11,841 INFO L93 Difference]: Finished difference Result 241 states and 721 transitions. [2022-03-15 20:35:11,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 20:35:11,841 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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 25 [2022-03-15 20:35:11,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:35:11,842 INFO L225 Difference]: With dead ends: 241 [2022-03-15 20:35:11,842 INFO L226 Difference]: Without dead ends: 0 [2022-03-15 20:35:11,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-15 20:35:11,842 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 58 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 20:35:11,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 125 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 20:35:11,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-15 20:35:11,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-15 20:35:11,843 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) [2022-03-15 20:35:11,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-15 20:35:11,844 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2022-03-15 20:35:11,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:35:11,844 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-15 20:35:11,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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 20:35:11,844 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-15 20:35:11,844 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-15 20:35:11,846 INFO L764 garLoopResultBuilder]: Registering result SAFE for location Process2Err0ASSERT_VIOLATIONASSERT (6 of 7 remaining) [2022-03-15 20:35:11,846 INFO L764 garLoopResultBuilder]: Registering result SAFE for location Process1Err0ASSERT_VIOLATIONASSERT (5 of 7 remaining) [2022-03-15 20:35:11,846 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 7 remaining) [2022-03-15 20:35:11,846 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (3 of 7 remaining) [2022-03-15 20:35:11,846 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (2 of 7 remaining) [2022-03-15 20:35:11,846 INFO L764 garLoopResultBuilder]: Registering result SAFE for location Process2Err0ASSERT_VIOLATIONASSERT (1 of 7 remaining) [2022-03-15 20:35:11,847 INFO L764 garLoopResultBuilder]: Registering result SAFE for location Process1Err0ASSERT_VIOLATIONASSERT (0 of 7 remaining) [2022-03-15 20:35:11,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-15 20:35:11,848 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-03-15 20:35:11,851 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 20:35:11,851 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 20:35:11,852 INFO L202 PluginConnector]: Adding new model Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 08:35:11 BasicIcfg [2022-03-15 20:35:11,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 20:35:11,853 INFO L158 Benchmark]: Toolchain (without parser) took 2319.18ms. Allocated memory was 192.9MB in the beginning and 324.0MB in the end (delta: 131.1MB). Free memory was 153.7MB in the beginning and 196.5MB in the end (delta: -42.8MB). Peak memory consumption was 89.6MB. Max. memory is 8.0GB. [2022-03-15 20:35:11,853 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 192.9MB. Free memory is still 154.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 20:35:11,853 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.75ms. Allocated memory is still 192.9MB. Free memory was 153.6MB in the beginning and 152.0MB in the end (delta: 1.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-15 20:35:11,854 INFO L158 Benchmark]: Boogie Preprocessor took 16.10ms. Allocated memory is still 192.9MB. Free memory was 152.0MB in the beginning and 151.1MB in the end (delta: 913.7kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 20:35:11,854 INFO L158 Benchmark]: RCFGBuilder took 225.22ms. Allocated memory is still 192.9MB. Free memory was 151.0MB in the beginning and 142.0MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-15 20:35:11,854 INFO L158 Benchmark]: TraceAbstraction took 2050.57ms. Allocated memory was 192.9MB in the beginning and 324.0MB in the end (delta: 131.1MB). Free memory was 141.5MB in the beginning and 196.5MB in the end (delta: -55.1MB). Peak memory consumption was 76.0MB. Max. memory is 8.0GB. [2022-03-15 20:35:11,855 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10ms. Allocated memory is still 192.9MB. Free memory is still 154.7MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.75ms. Allocated memory is still 192.9MB. Free memory was 153.6MB in the beginning and 152.0MB in the end (delta: 1.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.10ms. Allocated memory is still 192.9MB. Free memory was 152.0MB in the beginning and 151.1MB in the end (delta: 913.7kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 225.22ms. Allocated memory is still 192.9MB. Free memory was 151.0MB in the beginning and 142.0MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 2050.57ms. Allocated memory was 192.9MB in the beginning and 324.0MB in the end (delta: 131.1MB). Free memory was 141.5MB in the beginning and 196.5MB in the end (delta: -55.1MB). Peak memory consumption was 76.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 51 PlacesBefore, 45 PlacesAfterwards, 46 TransitionsBefore, 40 TransitionsAfterwards, 818 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 2376 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 694, positive: 574, positive conditional: 0, positive unconditional: 574, negative: 120, negative conditional: 0, negative unconditional: 120, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 198, positive: 175, positive conditional: 0, positive unconditional: 175, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 694, positive: 399, positive conditional: 0, positive unconditional: 399, negative: 97, negative conditional: 0, negative unconditional: 97, unknown: 198, unknown conditional: 0, unknown unconditional: 198] , Statistics on independence cache: Total cache size (in pairs): 121, Positive cache size: 98, Positive conditional cache size: 0, Positive unconditional cache size: 98, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23 - 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: 78]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 57]: 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 7 procedures, 78 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 444 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 444 mSDsluCounter, 703 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 468 mSDsCounter, 82 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 355 IncrementalHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 82 mSolverCounterUnsat, 285 mSDtfsCounter, 355 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 82 SyntacticMatches, 11 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=812occurred in iteration=0, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 452 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 302 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 1/1 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-15 20:35:11,889 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...