/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-PN-NoLbe-OGIterative-CovSimpl.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/fork_loop_local.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 07:39:28,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 07:39:28,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 07:39:28,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 07:39:28,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 07:39:28,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 07:39:28,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 07:39:28,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 07:39:28,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 07:39:28,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 07:39:28,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 07:39:28,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 07:39:28,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 07:39:28,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 07:39:28,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 07:39:28,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 07:39:28,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 07:39:28,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 07:39:28,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 07:39:28,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 07:39:28,599 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-PN-NoLbe-OGIterative-CovSimpl.epf [2021-08-13 07:39:28,626 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 07:39:28,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 07:39:28,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 07:39:28,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 07:39:28,629 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 07:39:28,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 07:39:28,629 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 07:39:28,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 07:39:28,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 07:39:28,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 07:39:28,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 07:39:28,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 07:39:28,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 07:39:28,630 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 07:39:28,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 07:39:28,631 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 07:39:28,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 07:39:28,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 07:39:28,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 07:39:28,631 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 07:39:28,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 07:39:28,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 07:39:28,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 07:39:28,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 07:39:28,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 07:39:28,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 07:39:28,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 07:39:28,632 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 07:39:28,632 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 07:39:28,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 07:39:28,632 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 07:39:28,633 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 07:39:28,633 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 07:39:28,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 07:39:28,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 07:39:28,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 07:39:28,906 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 07:39:28,907 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 07:39:28,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_local.bpl [2021-08-13 07:39:28,908 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_local.bpl' [2021-08-13 07:39:28,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 07:39:28,925 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 07:39:28,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 07:39:28,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 07:39:28,926 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 07:39:28,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:39:28" (1/1) ... [2021-08-13 07:39:28,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:39:28" (1/1) ... [2021-08-13 07:39:28,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 07:39:28,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 07:39:28,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 07:39:28,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 07:39:28,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:39:28" (1/1) ... [2021-08-13 07:39:28,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:39:28" (1/1) ... [2021-08-13 07:39:28,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:39:28" (1/1) ... [2021-08-13 07:39:28,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:39:28" (1/1) ... [2021-08-13 07:39:28,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:39:28" (1/1) ... [2021-08-13 07:39:28,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:39:28" (1/1) ... [2021-08-13 07:39:28,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:39:28" (1/1) ... [2021-08-13 07:39:28,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 07:39:28,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 07:39:28,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 07:39:28,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 07:39:28,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:39:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 07:39:29,022 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 07:39:29,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 07:39:29,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 07:39:29,023 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread given in one single declaration [2021-08-13 07:39:29,023 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-08-13 07:39:29,023 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-08-13 07:39:29,024 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 07:39:29,117 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 07:39:29,118 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-13 07:39:29,119 INFO L202 PluginConnector]: Adding new model fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 07:39:29 BoogieIcfgContainer [2021-08-13 07:39:29,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 07:39:29,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 07:39:29,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 07:39:29,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 07:39:29,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:39:28" (1/2) ... [2021-08-13 07:39:29,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79355df and model type fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 07:39:29, skipping insertion in model container [2021-08-13 07:39:29,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 07:39:29" (2/2) ... [2021-08-13 07:39:29,125 INFO L111 eAbstractionObserver]: Analyzing ICFG fork_loop_local.bpl [2021-08-13 07:39:29,132 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 07:39:29,132 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 07:39:29,133 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 07:39:29,153 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,154 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,154 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,155 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,159 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,162 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 07:39:29,178 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-13 07:39:29,202 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 07:39:29,202 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 07:39:29,202 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 07:39:29,202 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 07:39:29,203 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 07:39:29,203 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 07:39:29,203 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 07:39:29,203 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 07:39:29,212 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 12 places, 9 transitions, 23 flow [2021-08-13 07:39:29,229 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-08-13 07:39:29,230 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:39:29,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15 conditions, 10 events. 0/10 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs, 0 based on Foata normal form. 0/9 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-08-13 07:39:29,231 INFO L82 GeneralOperation]: Start removeDead. Operand has 12 places, 9 transitions, 23 flow [2021-08-13 07:39:29,236 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 12 places, 9 transitions, 23 flow [2021-08-13 07:39:29,238 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2021-08-13 07:39:29,239 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:39:29,239 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:39:29,240 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2021-08-13 07:39:29,240 INFO L430 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:39:29,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:39:29,248 INFO L82 PathProgramCache]: Analyzing trace with hash 42154, now seen corresponding path program 1 times [2021-08-13 07:39:29,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:39:29,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370444969] [2021-08-13 07:39:29,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:39:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-13 07:39:29,307 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-13 07:39:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-13 07:39:29,312 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-13 07:39:29,324 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-13 07:39:29,325 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-13 07:39:29,325 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 07:39:29,325 WARN L235 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-08-13 07:39:29,325 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-08-13 07:39:29,334 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,334 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,335 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,335 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,337 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,338 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,339 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,339 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,340 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,342 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,344 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 07:39:29,345 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-13 07:39:29,354 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 07:39:29,354 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 07:39:29,354 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 07:39:29,354 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 07:39:29,354 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 07:39:29,354 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 07:39:29,354 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 07:39:29,355 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 07:39:29,356 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 15 transitions, 42 flow [2021-08-13 07:39:29,362 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-08-13 07:39:29,363 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:39:29,363 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 25 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-08-13 07:39:29,363 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 15 transitions, 42 flow [2021-08-13 07:39:29,364 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 15 transitions, 42 flow [2021-08-13 07:39:29,368 INFO L129 PetriNetUnfolder]: 0/9 cut-off events. [2021-08-13 07:39:29,368 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:39:29,369 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:39:29,369 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-08-13 07:39:29,369 INFO L430 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:39:29,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:39:29,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1773586, now seen corresponding path program 1 times [2021-08-13 07:39:29,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:39:29,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750146100] [2021-08-13 07:39:29,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:39:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-13 07:39:29,376 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-13 07:39:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-13 07:39:29,383 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-13 07:39:29,386 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-13 07:39:29,386 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-13 07:39:29,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 07:39:29,386 WARN L235 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-08-13 07:39:29,386 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-08-13 07:39:29,407 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,407 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,407 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,408 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,408 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,408 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,408 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,408 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,409 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,409 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,409 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,409 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,410 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,412 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,414 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,415 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 07:39:29,416 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-13 07:39:29,416 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 07:39:29,416 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 07:39:29,417 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 07:39:29,417 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 07:39:29,417 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 07:39:29,417 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 07:39:29,417 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 07:39:29,417 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 07:39:29,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 21 transitions, 63 flow [2021-08-13 07:39:29,422 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-08-13 07:39:29,422 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:39:29,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 24 events. 0/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 60 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-08-13 07:39:29,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 21 transitions, 63 flow [2021-08-13 07:39:29,422 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 21 transitions, 63 flow [2021-08-13 07:39:29,426 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-08-13 07:39:29,426 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:39:29,427 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:39:29,427 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-08-13 07:39:29,427 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:39:29,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:39:29,430 INFO L82 PathProgramCache]: Analyzing trace with hash 75168682, now seen corresponding path program 1 times [2021-08-13 07:39:29,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:39:29,430 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400828424] [2021-08-13 07:39:29,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:39:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:39:29,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:39:29,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:39:29,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:39:29,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:39:29,563 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:39:29,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:39:29,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:39:29,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:39:29,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400828424] [2021-08-13 07:39:29,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400828424] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:39:29,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:39:29,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-13 07:39:29,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839686695] [2021-08-13 07:39:29,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 07:39:29,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:39:29,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 07:39:29,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 07:39:29,590 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 21 [2021-08-13 07:39:29,605 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 63 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2021-08-13 07:39:29,606 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:39:29,606 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 21 [2021-08-13 07:39:29,606 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:39:29,761 INFO L129 PetriNetUnfolder]: 291/669 cut-off events. [2021-08-13 07:39:29,761 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:39:29,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1257 conditions, 669 events. 291/669 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4286 event pairs, 91 based on Foata normal form. 0/545 useless extension candidates. Maximal degree in co-relation 1230. Up to 175 conditions per place. [2021-08-13 07:39:29,780 INFO L132 encePairwiseOnDemand]: 10/21 looper letters, 28 selfloop transitions, 14 changer transitions 0/49 dead transitions. [2021-08-13 07:39:29,780 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 49 transitions, 203 flow [2021-08-13 07:39:29,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 07:39:29,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 07:39:29,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2021-08-13 07:39:29,788 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7904761904761904 [2021-08-13 07:39:29,788 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 83 transitions. [2021-08-13 07:39:29,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 83 transitions. [2021-08-13 07:39:29,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:39:29,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 83 transitions. [2021-08-13 07:39:29,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 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) [2021-08-13 07:39:29,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2021-08-13 07:39:29,794 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2021-08-13 07:39:29,795 INFO L348 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2021-08-13 07:39:29,795 INFO L482 AbstractCegarLoop]: Abstraction has has 32 places, 49 transitions, 203 flow [2021-08-13 07:39:29,795 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2021-08-13 07:39:29,795 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:39:29,795 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-08-13 07:39:29,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 07:39:29,796 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:39:29,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:39:29,796 INFO L82 PathProgramCache]: Analyzing trace with hash 75175629, now seen corresponding path program 1 times [2021-08-13 07:39:29,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:39:29,796 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983155827] [2021-08-13 07:39:29,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:39:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-13 07:39:29,799 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-13 07:39:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-13 07:39:29,801 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-13 07:39:29,802 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-13 07:39:29,802 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-13 07:39:29,802 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 07:39:29,803 WARN L235 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-08-13 07:39:29,803 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-08-13 07:39:29,806 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,806 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,807 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,807 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,807 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,807 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,807 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,807 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,808 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,808 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,808 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,808 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,808 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,808 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,808 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,808 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,809 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,810 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,810 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,811 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:29,812 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 07:39:29,812 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-13 07:39:29,812 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 07:39:29,812 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 07:39:29,813 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 07:39:29,813 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 07:39:29,813 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 07:39:29,813 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 07:39:29,813 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 07:39:29,813 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 07:39:29,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 27 transitions, 86 flow [2021-08-13 07:39:29,816 INFO L129 PetriNetUnfolder]: 0/31 cut-off events. [2021-08-13 07:39:29,816 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:39:29,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 31 events. 0/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 90 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-08-13 07:39:29,816 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 27 transitions, 86 flow [2021-08-13 07:39:29,817 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 27 transitions, 86 flow [2021-08-13 07:39:29,818 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-08-13 07:39:29,818 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:39:29,818 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:39:29,818 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-08-13 07:39:29,818 INFO L430 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:39:29,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:39:29,819 INFO L82 PathProgramCache]: Analyzing trace with hash 101078907, now seen corresponding path program 1 times [2021-08-13 07:39:29,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:39:29,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760933172] [2021-08-13 07:39:29,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:39:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:39:29,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:39:29,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:39:29,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:39:29,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:39:29,843 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:39:29,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:39:29,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:39:29,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:39:29,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760933172] [2021-08-13 07:39:29,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760933172] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:39:29,848 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:39:29,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-13 07:39:29,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899736512] [2021-08-13 07:39:29,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 07:39:29,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:39:29,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 07:39:29,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 07:39:29,851 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2021-08-13 07:39:29,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2021-08-13 07:39:29,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:39:29,851 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2021-08-13 07:39:29,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:39:30,221 INFO L129 PetriNetUnfolder]: 2852/5054 cut-off events. [2021-08-13 07:39:30,221 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:39:30,233 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9576 conditions, 5054 events. 2852/5054 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 37317 event pairs, 882 based on Foata normal form. 0/4171 useless extension candidates. Maximal degree in co-relation 9540. Up to 1413 conditions per place. [2021-08-13 07:39:30,261 INFO L132 encePairwiseOnDemand]: 13/27 looper letters, 38 selfloop transitions, 18 changer transitions 0/65 dead transitions. [2021-08-13 07:39:30,265 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 65 transitions, 274 flow [2021-08-13 07:39:30,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 07:39:30,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 07:39:30,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2021-08-13 07:39:30,268 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8074074074074075 [2021-08-13 07:39:30,268 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 109 transitions. [2021-08-13 07:39:30,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 109 transitions. [2021-08-13 07:39:30,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:39:30,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 109 transitions. [2021-08-13 07:39:30,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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) [2021-08-13 07:39:30,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 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) [2021-08-13 07:39:30,271 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 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) [2021-08-13 07:39:30,271 INFO L348 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2021-08-13 07:39:30,271 INFO L482 AbstractCegarLoop]: Abstraction has has 40 places, 65 transitions, 274 flow [2021-08-13 07:39:30,271 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2021-08-13 07:39:30,271 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:39:30,271 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-13 07:39:30,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 07:39:30,272 INFO L430 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:39:30,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:39:30,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1161010669, now seen corresponding path program 1 times [2021-08-13 07:39:30,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:39:30,272 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842359195] [2021-08-13 07:39:30,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:39:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:39:30,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:39:30,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:39:30,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:39:30,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:39:30,317 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:39:30,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:39:30,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-13 07:39:30,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:39:30,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842359195] [2021-08-13 07:39:30,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842359195] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:39:30,323 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:39:30,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-13 07:39:30,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436862060] [2021-08-13 07:39:30,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 07:39:30,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:39:30,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 07:39:30,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 07:39:30,324 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2021-08-13 07:39:30,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 65 transitions, 274 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2021-08-13 07:39:30,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:39:30,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2021-08-13 07:39:30,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:39:31,016 INFO L129 PetriNetUnfolder]: 5089/9213 cut-off events. [2021-08-13 07:39:31,016 INFO L130 PetriNetUnfolder]: For 25/61 co-relation queries the response was YES. [2021-08-13 07:39:31,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25585 conditions, 9213 events. 5089/9213 cut-off events. For 25/61 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 76906 event pairs, 1178 based on Foata normal form. 1/7703 useless extension candidates. Maximal degree in co-relation 25215. Up to 2374 conditions per place. [2021-08-13 07:39:31,088 INFO L132 encePairwiseOnDemand]: 13/27 looper letters, 95 selfloop transitions, 50 changer transitions 0/154 dead transitions. [2021-08-13 07:39:31,088 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 154 transitions, 923 flow [2021-08-13 07:39:31,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 07:39:31,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 07:39:31,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2021-08-13 07:39:31,092 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7851851851851852 [2021-08-13 07:39:31,093 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 106 transitions. [2021-08-13 07:39:31,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 106 transitions. [2021-08-13 07:39:31,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:39:31,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 106 transitions. [2021-08-13 07:39:31,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2021-08-13 07:39:31,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 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) [2021-08-13 07:39:31,094 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 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) [2021-08-13 07:39:31,095 INFO L348 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2021-08-13 07:39:31,095 INFO L482 AbstractCegarLoop]: Abstraction has has 44 places, 154 transitions, 923 flow [2021-08-13 07:39:31,095 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2021-08-13 07:39:31,095 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:39:31,095 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-13 07:39:31,095 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 07:39:31,095 INFO L430 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:39:31,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:39:31,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1160997765, now seen corresponding path program 1 times [2021-08-13 07:39:31,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:39:31,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427400434] [2021-08-13 07:39:31,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:39:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-13 07:39:31,102 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-13 07:39:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-13 07:39:31,107 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-13 07:39:31,110 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-13 07:39:31,110 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-13 07:39:31,110 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 07:39:31,111 WARN L235 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2021-08-13 07:39:31,111 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2021-08-13 07:39:31,115 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:31,115 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:31,115 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:31,115 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:31,116 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:31,116 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:31,116 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:31,116 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:31,116 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:31,116 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:31,116 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:31,116 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:31,117 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:31,117 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:31,117 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:31,117 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:31,120 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:31,120 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:31,120 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:31,120 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:31,120 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:31,121 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:31,122 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:31,122 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:31,123 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:31,123 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 07:39:31,123 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-13 07:39:31,124 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 07:39:31,124 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 07:39:31,124 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 07:39:31,124 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 07:39:31,124 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 07:39:31,124 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 07:39:31,124 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 07:39:31,124 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 07:39:31,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 33 transitions, 111 flow [2021-08-13 07:39:31,128 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-08-13 07:39:31,129 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:39:31,129 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 38 events. 0/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 115 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-08-13 07:39:31,129 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 33 transitions, 111 flow [2021-08-13 07:39:31,130 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 33 transitions, 111 flow [2021-08-13 07:39:31,132 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-08-13 07:39:31,132 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:39:31,133 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:39:31,133 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-08-13 07:39:31,133 INFO L430 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:39:31,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:39:31,133 INFO L82 PathProgramCache]: Analyzing trace with hash 132714962, now seen corresponding path program 1 times [2021-08-13 07:39:31,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:39:31,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405134729] [2021-08-13 07:39:31,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:39:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:39:31,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:39:31,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:39:31,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:39:31,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:39:31,170 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:39:31,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:39:31,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:39:31,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:39:31,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405134729] [2021-08-13 07:39:31,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405134729] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:39:31,174 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:39:31,174 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-13 07:39:31,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347304280] [2021-08-13 07:39:31,174 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 07:39:31,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:39:31,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 07:39:31,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 07:39:31,175 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2021-08-13 07:39:31,176 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2021-08-13 07:39:31,176 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:39:31,176 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2021-08-13 07:39:31,176 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:39:33,319 INFO L129 PetriNetUnfolder]: 22065/34223 cut-off events. [2021-08-13 07:39:33,319 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:39:33,470 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65388 conditions, 34223 events. 22065/34223 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2093. Compared 270231 event pairs, 6846 based on Foata normal form. 0/28585 useless extension candidates. Maximal degree in co-relation 65342. Up to 10043 conditions per place. [2021-08-13 07:39:33,705 INFO L132 encePairwiseOnDemand]: 16/33 looper letters, 48 selfloop transitions, 22 changer transitions 0/81 dead transitions. [2021-08-13 07:39:33,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 81 transitions, 347 flow [2021-08-13 07:39:33,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 07:39:33,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 07:39:33,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2021-08-13 07:39:33,706 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2021-08-13 07:39:33,706 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 135 transitions. [2021-08-13 07:39:33,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 135 transitions. [2021-08-13 07:39:33,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:39:33,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 135 transitions. [2021-08-13 07:39:33,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-08-13 07:39:33,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 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) [2021-08-13 07:39:33,708 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 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) [2021-08-13 07:39:33,708 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 4 predicate places. [2021-08-13 07:39:33,708 INFO L482 AbstractCegarLoop]: Abstraction has has 48 places, 81 transitions, 347 flow [2021-08-13 07:39:33,708 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2021-08-13 07:39:33,708 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:39:33,708 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-13 07:39:33,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 07:39:33,708 INFO L430 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:39:33,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:39:33,709 INFO L82 PathProgramCache]: Analyzing trace with hash -179995026, now seen corresponding path program 1 times [2021-08-13 07:39:33,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:39:33,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801368004] [2021-08-13 07:39:33,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:39:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:39:33,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:39:33,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:39:33,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:39:33,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:39:33,728 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:39:33,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:39:33,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-13 07:39:33,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:39:33,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801368004] [2021-08-13 07:39:33,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801368004] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:39:33,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:39:33,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-13 07:39:33,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322391394] [2021-08-13 07:39:33,731 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 07:39:33,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:39:33,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 07:39:33,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 07:39:33,731 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2021-08-13 07:39:33,731 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 81 transitions, 347 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2021-08-13 07:39:33,732 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:39:33,732 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2021-08-13 07:39:33,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:39:39,423 INFO L129 PetriNetUnfolder]: 41526/65262 cut-off events. [2021-08-13 07:39:39,423 INFO L130 PetriNetUnfolder]: For 31/209 co-relation queries the response was YES. [2021-08-13 07:39:39,821 INFO L84 FinitePrefix]: Finished finitePrefix Result has 183515 conditions, 65262 events. 41526/65262 cut-off events. For 31/209 co-relation queries the response was YES. Maximal size of possible extension queue 4154. Compared 571070 event pairs, 9757 based on Foata normal form. 9/55249 useless extension candidates. Maximal degree in co-relation 183441. Up to 17974 conditions per place. [2021-08-13 07:39:40,237 INFO L132 encePairwiseOnDemand]: 16/33 looper letters, 123 selfloop transitions, 62 changer transitions 0/196 dead transitions. [2021-08-13 07:39:40,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 196 transitions, 1180 flow [2021-08-13 07:39:40,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 07:39:40,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 07:39:40,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2021-08-13 07:39:40,238 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.793939393939394 [2021-08-13 07:39:40,238 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 131 transitions. [2021-08-13 07:39:40,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 131 transitions. [2021-08-13 07:39:40,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:39:40,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 131 transitions. [2021-08-13 07:39:40,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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) [2021-08-13 07:39:40,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 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) [2021-08-13 07:39:40,240 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 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) [2021-08-13 07:39:40,240 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2021-08-13 07:39:40,240 INFO L482 AbstractCegarLoop]: Abstraction has has 52 places, 196 transitions, 1180 flow [2021-08-13 07:39:40,240 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2021-08-13 07:39:40,240 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:39:40,241 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:39:40,241 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 07:39:40,241 INFO L430 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:39:40,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:39:40,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1284170360, now seen corresponding path program 1 times [2021-08-13 07:39:40,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:39:40,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963788242] [2021-08-13 07:39:40,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:39:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-13 07:39:40,250 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-13 07:39:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-13 07:39:40,251 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-13 07:39:40,253 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-13 07:39:40,253 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-13 07:39:40,254 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 07:39:40,254 WARN L235 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2021-08-13 07:39:40,254 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2021-08-13 07:39:40,258 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,258 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,258 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,258 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,258 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,259 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,259 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,259 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,259 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,259 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,259 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,259 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,260 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,260 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,260 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,260 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,260 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,260 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,260 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,260 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,261 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,261 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,261 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,261 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,261 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,262 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,262 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,263 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,265 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,266 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:39:40,267 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 07:39:40,267 INFO L255 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-08-13 07:39:40,268 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 07:39:40,268 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 07:39:40,268 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 07:39:40,268 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 07:39:40,268 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 07:39:40,269 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 07:39:40,269 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 07:39:40,269 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 07:39:40,271 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 39 transitions, 138 flow [2021-08-13 07:39:40,273 INFO L129 PetriNetUnfolder]: 0/45 cut-off events. [2021-08-13 07:39:40,273 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:39:40,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 45 events. 0/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 151 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-08-13 07:39:40,273 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 39 transitions, 138 flow [2021-08-13 07:39:40,274 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 138 flow [2021-08-13 07:39:40,274 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-08-13 07:39:40,274 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:39:40,274 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:39:40,274 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-08-13 07:39:40,274 INFO L430 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:39:40,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:39:40,275 INFO L82 PathProgramCache]: Analyzing trace with hash 170106637, now seen corresponding path program 1 times [2021-08-13 07:39:40,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:39:40,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140205718] [2021-08-13 07:39:40,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:39:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:39:40,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:39:40,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:39:40,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:39:40,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:39:40,309 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:39:40,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:39:40,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:39:40,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:39:40,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140205718] [2021-08-13 07:39:40,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140205718] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:39:40,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:39:40,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-13 07:39:40,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663039789] [2021-08-13 07:39:40,311 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 07:39:40,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:39:40,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 07:39:40,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 07:39:40,312 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2021-08-13 07:39:40,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-08-13 07:39:40,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:39:40,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2021-08-13 07:39:40,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:40:08,559 INFO L129 PetriNetUnfolder]: 151182/216132 cut-off events. [2021-08-13 07:40:08,559 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:40:09,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 415569 conditions, 216132 events. 151182/216132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10216. Compared 1786592 event pairs, 46742 based on Foata normal form. 0/182063 useless extension candidates. Maximal degree in co-relation 415512. Up to 64869 conditions per place. [2021-08-13 07:40:10,724 INFO L132 encePairwiseOnDemand]: 19/39 looper letters, 58 selfloop transitions, 26 changer transitions 0/97 dead transitions. [2021-08-13 07:40:10,724 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 97 transitions, 422 flow [2021-08-13 07:40:10,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 07:40:10,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 07:40:10,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2021-08-13 07:40:10,725 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8256410256410256 [2021-08-13 07:40:10,725 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 161 transitions. [2021-08-13 07:40:10,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 161 transitions. [2021-08-13 07:40:10,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:40:10,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 161 transitions. [2021-08-13 07:40:10,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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) [2021-08-13 07:40:10,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 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) [2021-08-13 07:40:10,726 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 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) [2021-08-13 07:40:10,727 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2021-08-13 07:40:10,727 INFO L482 AbstractCegarLoop]: Abstraction has has 56 places, 97 transitions, 422 flow [2021-08-13 07:40:10,727 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-08-13 07:40:10,727 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:40:10,727 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-13 07:40:10,727 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 07:40:10,727 INFO L430 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:40:10,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:40:10,727 INFO L82 PathProgramCache]: Analyzing trace with hash 978536248, now seen corresponding path program 1 times [2021-08-13 07:40:10,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:40:10,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953706491] [2021-08-13 07:40:10,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:40:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:40:10,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:10,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:10,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:10,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:10,746 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:40:10,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:40:10,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-13 07:40:10,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:40:10,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953706491] [2021-08-13 07:40:10,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953706491] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:40:10,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:40:10,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-13 07:40:10,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92944893] [2021-08-13 07:40:10,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 07:40:10,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:40:10,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 07:40:10,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 07:40:10,750 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2021-08-13 07:40:10,750 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 97 transitions, 422 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-08-13 07:40:10,750 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:40:10,750 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2021-08-13 07:40:10,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:42:01,878 INFO L129 PetriNetUnfolder]: 290971/418422 cut-off events. [2021-08-13 07:42:01,879 INFO L130 PetriNetUnfolder]: For 84/1152 co-relation queries the response was YES. [2021-08-13 07:42:04,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1190342 conditions, 418422 events. 290971/418422 cut-off events. For 84/1152 co-relation queries the response was YES. Maximal size of possible extension queue 20147. Compared 3736153 event pairs, 64014 based on Foata normal form. 15/356949 useless extension candidates. Maximal degree in co-relation 1189764. Up to 119346 conditions per place. [2021-08-13 07:42:06,770 INFO L132 encePairwiseOnDemand]: 19/39 looper letters, 151 selfloop transitions, 74 changer transitions 0/238 dead transitions. [2021-08-13 07:42:06,770 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 238 transitions, 1439 flow [2021-08-13 07:42:06,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 07:42:06,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 07:42:06,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2021-08-13 07:42:06,772 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8 [2021-08-13 07:42:06,772 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 156 transitions. [2021-08-13 07:42:06,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 156 transitions. [2021-08-13 07:42:06,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:42:06,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 156 transitions. [2021-08-13 07:42:06,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 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) [2021-08-13 07:42:06,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 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) [2021-08-13 07:42:06,774 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 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) [2021-08-13 07:42:06,774 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2021-08-13 07:42:06,774 INFO L482 AbstractCegarLoop]: Abstraction has has 60 places, 238 transitions, 1439 flow [2021-08-13 07:42:06,774 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-08-13 07:42:06,777 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:42:06,777 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:42:06,777 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-13 07:42:06,777 INFO L430 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:42:06,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:42:06,779 INFO L82 PathProgramCache]: Analyzing trace with hash 270378104, now seen corresponding path program 1 times [2021-08-13 07:42:06,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:42:06,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517120233] [2021-08-13 07:42:06,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:42:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:42:06,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:06,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:06,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:06,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:06,836 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:42:06,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:42:06,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-13 07:42:06,839 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:42:06,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517120233] [2021-08-13 07:42:06,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517120233] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:42:06,839 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:42:06,839 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-13 07:42:06,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490612861] [2021-08-13 07:42:06,840 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 07:42:06,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:42:06,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 07:42:06,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 07:42:06,841 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2021-08-13 07:42:06,841 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 238 transitions, 1439 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-08-13 07:42:06,841 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:42:06,841 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2021-08-13 07:42:06,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2021-08-13 07:45:26,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 07:45:26,676 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-13 07:45:26,676 WARN L547 AbstractCegarLoop]: Verification canceled [2021-08-13 07:45:26,678 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 6 thread instances [2021-08-13 07:45:26,680 WARN L188 ceAbstractionStarter]: Timeout [2021-08-13 07:45:26,680 INFO L202 PluginConnector]: Adding new model fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.08 07:45:26 BasicIcfg [2021-08-13 07:45:26,680 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-13 07:45:26,681 INFO L168 Benchmark]: Toolchain (without parser) took 357755.60 ms. Allocated memory was 209.7 MB in the beginning and 6.6 GB in the end (delta: 6.4 GB). Free memory was 190.6 MB in the beginning and 940.4 MB in the end (delta: -749.7 MB). Peak memory consumption was 6.2 GB. Max. memory is 8.0 GB. [2021-08-13 07:45:26,681 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 209.7 MB. Free memory is still 191.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-13 07:45:26,682 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.18 ms. Allocated memory is still 209.7 MB. Free memory was 190.5 MB in the beginning and 189.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-13 07:45:26,682 INFO L168 Benchmark]: Boogie Preprocessor took 11.68 ms. Allocated memory is still 209.7 MB. Free memory was 189.1 MB in the beginning and 188.2 MB in the end (delta: 915.1 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-13 07:45:26,683 INFO L168 Benchmark]: RCFGBuilder took 159.78 ms. Allocated memory is still 209.7 MB. Free memory was 188.1 MB in the beginning and 180.2 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-08-13 07:45:26,683 INFO L168 Benchmark]: TraceAbstraction took 357559.61 ms. Allocated memory was 209.7 MB in the beginning and 6.6 GB in the end (delta: 6.4 GB). Free memory was 179.6 MB in the beginning and 940.4 MB in the end (delta: -760.8 MB). Peak memory consumption was 6.2 GB. Max. memory is 8.0 GB. [2021-08-13 07:45:26,684 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 0.11 ms. Allocated memory is still 209.7 MB. Free memory is still 191.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 20.18 ms. Allocated memory is still 209.7 MB. Free memory was 190.5 MB in the beginning and 189.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 11.68 ms. Allocated memory is still 209.7 MB. Free memory was 189.1 MB in the beginning and 188.2 MB in the end (delta: 915.1 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 159.78 ms. Allocated memory is still 209.7 MB. Free memory was 188.1 MB in the beginning and 180.2 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 357559.61 ms. Allocated memory was 209.7 MB in the beginning and 6.6 GB in the end (delta: 6.4 GB). Free memory was 179.6 MB in the beginning and 940.4 MB in the end (delta: -760.8 MB). Peak memory consumption was 6.2 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (4states, 13/39 universal loopers) in iteration 3,while PetriNetUnfolder was constructing finite prefix that currently has 1888671 conditions, 488426 events (360852/488425 cut-off events. For 710/3701 co-relation queries the response was YES. Maximal size of possible extension queue 38033. Compared 4201897 event pairs, 57153 based on Foata normal form. 105/455970 useless extension candidates. Maximal degree in co-relation 1881010. Up to 149788 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 16 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 126.0ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 32.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.7ms SsaConstructionTime, 9.0ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 22 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 33.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6ms SsaConstructionTime, 1.8ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 5 procedures, 28 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 386.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 216.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 15 SDtfs, 20 SDslu, 9 SDs, 0 SdLazy, 34 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 43.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=203occurred in iteration=1, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.2ms SsaConstructionTime, 10.0ms SatisfiabilityAnalysisTime, 121.5ms InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 4 thread instances CFG has 6 procedures, 34 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 1298.2ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1192.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 44 SDtfs, 55 SDslu, 26 SDs, 0 SdLazy, 90 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 75.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=923occurred in iteration=2, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1ms SsaConstructionTime, 11.7ms SatisfiabilityAnalysisTime, 66.5ms InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 63 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 - StatisticsResult: Ultimate Automizer benchmark data with 5 thread instances CFG has 7 procedures, 40 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 9129.9ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 9042.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 59 SDtfs, 68 SDslu, 34 SDs, 0 SdLazy, 112 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 73.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1180occurred in iteration=2, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7ms SsaConstructionTime, 10.6ms SatisfiabilityAnalysisTime, 50.3ms InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 63 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 - StatisticsResult: Ultimate Automizer benchmark data with 6 thread instances CFG has 8 procedures, 46 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 346407.7ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 346275.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 108 SDtfs, 123 SDslu, 62 SDs, 0 SdLazy, 201 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 163.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1439occurred in iteration=2, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.3ms SsaConstructionTime, 11.8ms SatisfiabilityAnalysisTime, 87.4ms InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 105 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 4/4 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 could not prove your program: Timeout Completed graceful shutdown