/usr/bin/java -Xmx16000000000 -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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/fork_loop_local.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 17:39:36,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 17:39:36,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 17:39:36,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 17:39:36,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 17:39:36,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 17:39:36,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 17:39:36,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 17:39:36,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 17:39:36,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 17:39:36,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 17:39:36,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 17:39:36,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 17:39:36,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 17:39:36,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 17:39:36,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 17:39:36,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 17:39:36,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 17:39:36,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 17:39:36,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 17:39:36,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 17:39:36,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 17:39:36,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 17:39:36,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 17:39:36,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 17:39:36,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 17:39:36,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 17:39:36,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 17:39:36,992 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-RepeatedSemanticLbe.epf [2021-03-25 17:39:37,028 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 17:39:37,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 17:39:37,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 17:39:37,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 17:39:37,032 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 17:39:37,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 17:39:37,032 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 17:39:37,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 17:39:37,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 17:39:37,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 17:39:37,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 17:39:37,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 17:39:37,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 17:39:37,034 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 17:39:37,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 17:39:37,034 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 17:39:37,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 17:39:37,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 17:39:37,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 17:39:37,035 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 17:39:37,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 17:39:37,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 17:39:37,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 17:39:37,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 17:39:37,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 17:39:37,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 17:39:37,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 17:39:37,036 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 17:39:37,036 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 17:39:37,036 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 17:39:37,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 17:39:37,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 17:39:37,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 17:39:37,355 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 17:39:37,357 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 17:39:37,358 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_local.bpl [2021-03-25 17:39:37,358 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_local.bpl' [2021-03-25 17:39:37,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 17:39:37,392 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 17:39:37,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 17:39:37,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 17:39:37,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 17:39:37,404 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 25.03 05:39:37" (1/1) ... [2021-03-25 17:39:37,410 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 25.03 05:39:37" (1/1) ... [2021-03-25 17:39:37,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 17:39:37,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 17:39:37,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 17:39:37,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 17:39:37,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:39:37" (1/1) ... [2021-03-25 17:39:37,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:39:37" (1/1) ... [2021-03-25 17:39:37,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:39:37" (1/1) ... [2021-03-25 17:39:37,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:39:37" (1/1) ... [2021-03-25 17:39:37,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:39:37" (1/1) ... [2021-03-25 17:39:37,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:39:37" (1/1) ... [2021-03-25 17:39:37,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:39:37" (1/1) ... [2021-03-25 17:39:37,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 17:39:37,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 17:39:37,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 17:39:37,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 17:39:37,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:39:37" (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 [2021-03-25 17:39:37,535 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 17:39:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 17:39:37,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 17:39:37,536 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread given in one single declaration [2021-03-25 17:39:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-03-25 17:39:37,537 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-03-25 17:39:37,537 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 17:39:37,640 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 17:39:37,640 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-03-25 17:39:37,641 INFO L202 PluginConnector]: Adding new model fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:39:37 BoogieIcfgContainer [2021-03-25 17:39:37,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 17:39:37,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 17:39:37,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 17:39:37,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 17:39:37,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:39:37" (1/2) ... [2021-03-25 17:39:37,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad746fe and model type fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:39:37, skipping insertion in model container [2021-03-25 17:39:37,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:39:37" (2/2) ... [2021-03-25 17:39:37,647 INFO L111 eAbstractionObserver]: Analyzing ICFG fork_loop_local.bpl [2021-03-25 17:39:37,672 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 17:39:37,674 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 17:39:37,675 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 17:39:37,691 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:37,692 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:37,693 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:37,693 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:37,699 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:37,703 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 17:39:37,720 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 17:39:37,735 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 17:39:37,736 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 17:39:37,736 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 17:39:37,736 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 17:39:37,736 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 17:39:37,736 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 17:39:37,736 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 17:39:37,736 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 17:39:37,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 12 places, 9 transitions, 23 flow [2021-03-25 17:39:37,755 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-25 17:39:37,756 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:39:37,757 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. [2021-03-25 17:39:37,757 INFO L82 GeneralOperation]: Start removeDead. Operand has 12 places, 9 transitions, 23 flow [2021-03-25 17:39:37,760 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 12 places, 9 transitions, 23 flow [2021-03-25 17:39:37,761 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:39:37,773 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 12 places, 9 transitions, 23 flow [2021-03-25 17:39:37,775 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 12 places, 9 transitions, 23 flow [2021-03-25 17:39:37,776 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 12 places, 9 transitions, 23 flow [2021-03-25 17:39:37,779 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-25 17:39:37,779 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:39:37,779 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 4. Compared 10 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. [2021-03-25 17:39:37,780 INFO L142 LiptonReduction]: Number of co-enabled transitions 20 [2021-03-25 17:39:37,871 INFO L154 LiptonReduction]: Checked pairs total: 8 [2021-03-25 17:39:37,871 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 17:39:37,873 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 113 [2021-03-25 17:39:37,880 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2021-03-25 17:39:37,881 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:39:37,881 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:39:37,881 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2021-03-25 17:39:37,882 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 17:39:37,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:39:37,886 INFO L82 PathProgramCache]: Analyzing trace with hash 42154, now seen corresponding path program 1 times [2021-03-25 17:39:37,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:39:37,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804114581] [2021-03-25 17:39:37,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:39:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 17:39:37,948 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 17:39:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 17:39:37,951 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 17:39:37,963 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 17:39:37,964 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 17:39:37,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 17:39:37,964 WARN L342 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-25 17:39:37,965 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-03-25 17:39:37,969 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:37,969 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:37,969 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:37,969 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:37,970 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:37,970 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:37,970 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:37,970 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:37,971 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:37,972 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:37,973 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 17:39:37,973 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 17:39:37,976 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 17:39:37,976 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 17:39:37,976 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 17:39:37,976 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 17:39:37,976 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 17:39:37,976 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 17:39:37,976 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 17:39:37,976 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 17:39:37,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 15 transitions, 42 flow [2021-03-25 17:39:37,981 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-25 17:39:37,982 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:39:37,982 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. [2021-03-25 17:39:37,982 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 15 transitions, 42 flow [2021-03-25 17:39:37,983 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 15 transitions, 42 flow [2021-03-25 17:39:37,983 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:39:37,983 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 20 places, 15 transitions, 42 flow [2021-03-25 17:39:37,983 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 20 places, 15 transitions, 42 flow [2021-03-25 17:39:37,984 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 15 transitions, 42 flow [2021-03-25 17:39:38,004 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-25 17:39:38,004 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:39:38,005 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 5. Compared 29 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. [2021-03-25 17:39:38,005 INFO L142 LiptonReduction]: Number of co-enabled transitions 100 [2021-03-25 17:39:38,120 INFO L154 LiptonReduction]: Checked pairs total: 168 [2021-03-25 17:39:38,120 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 17:39:38,120 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 137 [2021-03-25 17:39:38,124 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-03-25 17:39:38,124 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:39:38,124 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:39:38,124 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-03-25 17:39:38,125 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:39:38,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:39:38,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1896722, now seen corresponding path program 1 times [2021-03-25 17:39:38,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:39:38,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514564748] [2021-03-25 17:39:38,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:39:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 17:39:38,130 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 17:39:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 17:39:38,145 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 17:39:38,146 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 17:39:38,146 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 17:39:38,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 17:39:38,147 WARN L342 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-25 17:39:38,148 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-03-25 17:39:38,161 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,161 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,161 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,161 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,162 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,162 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,162 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,162 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,163 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,163 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,163 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,163 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,164 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,167 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,168 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,169 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 17:39:38,170 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-25 17:39:38,172 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 17:39:38,172 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 17:39:38,172 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 17:39:38,172 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 17:39:38,172 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 17:39:38,173 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 17:39:38,173 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 17:39:38,173 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 17:39:38,174 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 21 transitions, 63 flow [2021-03-25 17:39:38,186 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-03-25 17:39:38,190 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:39:38,190 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. [2021-03-25 17:39:38,190 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 21 transitions, 63 flow [2021-03-25 17:39:38,191 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 21 transitions, 63 flow [2021-03-25 17:39:38,191 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:39:38,191 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 21 transitions, 63 flow [2021-03-25 17:39:38,192 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 21 transitions, 63 flow [2021-03-25 17:39:38,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 21 transitions, 63 flow [2021-03-25 17:39:38,197 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-03-25 17:39:38,197 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:39:38,198 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 70 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. [2021-03-25 17:39:38,198 INFO L142 LiptonReduction]: Number of co-enabled transitions 240 [2021-03-25 17:39:38,313 INFO L154 LiptonReduction]: Checked pairs total: 486 [2021-03-25 17:39:38,313 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 17:39:38,314 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 123 [2021-03-25 17:39:38,322 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-03-25 17:39:38,322 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:39:38,323 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:39:38,323 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-25 17:39:38,323 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:39:38,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:39:38,323 INFO L82 PathProgramCache]: Analyzing trace with hash 80894512, now seen corresponding path program 1 times [2021-03-25 17:39:38,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:39:38,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768651252] [2021-03-25 17:39:38,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:39:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:39:38,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:39:38,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:39:38,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:39:38,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:39:38,423 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-25 17:39:38,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:39:38,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:39:38,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768651252] [2021-03-25 17:39:38,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:39:38,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 17:39:38,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979572251] [2021-03-25 17:39:38,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 17:39:38,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:39:38,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 17:39:38,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 17:39:38,457 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2021-03-25 17:39:38,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 18 transitions, 57 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) [2021-03-25 17:39:38,459 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:39:38,459 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2021-03-25 17:39:38,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:39:38,685 INFO L129 PetriNetUnfolder]: 291/578 cut-off events. [2021-03-25 17:39:38,686 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:39:38,691 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1166 conditions, 578 events. 291/578 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3168 event pairs, 91 based on Foata normal form. 0/454 useless extension candidates. Maximal degree in co-relation 1139. Up to 175 conditions per place. [2021-03-25 17:39:38,701 INFO L132 encePairwiseOnDemand]: 13/24 looper letters, 28 selfloop transitions, 14 changer transitions 0/46 dead transitions. [2021-03-25 17:39:38,701 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 46 transitions, 197 flow [2021-03-25 17:39:38,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 17:39:38,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 17:39:38,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2021-03-25 17:39:38,712 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2021-03-25 17:39:38,712 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 83 transitions. [2021-03-25 17:39:38,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 83 transitions. [2021-03-25 17:39:38,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:39:38,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 83 transitions. [2021-03-25 17:39:38,718 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) [2021-03-25 17:39:38,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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) [2021-03-25 17:39:38,726 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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) [2021-03-25 17:39:38,728 INFO L185 Difference]: Start difference. First operand has 25 places, 18 transitions, 57 flow. Second operand 5 states and 83 transitions. [2021-03-25 17:39:38,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 46 transitions, 197 flow [2021-03-25 17:39:38,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 46 transitions, 191 flow, removed 3 selfloop flow, removed 0 redundant places. [2021-03-25 17:39:38,739 INFO L241 Difference]: Finished difference. Result has 33 places, 31 transitions, 171 flow [2021-03-25 17:39:38,741 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2021-03-25 17:39:38,742 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2021-03-25 17:39:38,742 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:39:38,742 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 31 transitions, 171 flow [2021-03-25 17:39:38,742 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 31 transitions, 171 flow [2021-03-25 17:39:38,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 31 transitions, 171 flow [2021-03-25 17:39:38,786 INFO L129 PetriNetUnfolder]: 185/396 cut-off events. [2021-03-25 17:39:38,787 INFO L130 PetriNetUnfolder]: For 167/172 co-relation queries the response was YES. [2021-03-25 17:39:38,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1173 conditions, 396 events. 185/396 cut-off events. For 167/172 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2249 event pairs, 69 based on Foata normal form. 1/394 useless extension candidates. Maximal degree in co-relation 1153. Up to 196 conditions per place. [2021-03-25 17:39:38,794 INFO L142 LiptonReduction]: Number of co-enabled transitions 204 [2021-03-25 17:39:38,799 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:39:38,799 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:39:38,799 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 57 [2021-03-25 17:39:38,801 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 171 flow [2021-03-25 17:39:38,801 INFO L481 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) [2021-03-25 17:39:38,801 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:39:38,802 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-25 17:39:38,802 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 17:39:38,802 INFO L428 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:39:38,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:39:38,802 INFO L82 PathProgramCache]: Analyzing trace with hash 80901459, now seen corresponding path program 1 times [2021-03-25 17:39:38,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:39:38,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4690117] [2021-03-25 17:39:38,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:39:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 17:39:38,811 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 17:39:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 17:39:38,814 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 17:39:38,818 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 17:39:38,818 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 17:39:38,818 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 17:39:38,819 WARN L342 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-25 17:39:38,819 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-03-25 17:39:38,840 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,841 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,841 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,841 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,841 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,841 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,842 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,842 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,842 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,842 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,842 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,842 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,843 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,843 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,843 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,843 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,846 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,847 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,851 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,852 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:38,853 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 17:39:38,853 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-25 17:39:38,854 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 17:39:38,854 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 17:39:38,854 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 17:39:38,854 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 17:39:38,854 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 17:39:38,854 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 17:39:38,854 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 17:39:38,854 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 17:39:38,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 27 transitions, 86 flow [2021-03-25 17:39:38,857 INFO L129 PetriNetUnfolder]: 0/31 cut-off events. [2021-03-25 17:39:38,858 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:39:38,858 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. [2021-03-25 17:39:38,858 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 27 transitions, 86 flow [2021-03-25 17:39:38,858 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 27 transitions, 86 flow [2021-03-25 17:39:38,859 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:39:38,859 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 27 transitions, 86 flow [2021-03-25 17:39:38,859 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 27 transitions, 86 flow [2021-03-25 17:39:38,859 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 27 transitions, 86 flow [2021-03-25 17:39:38,861 INFO L129 PetriNetUnfolder]: 0/31 cut-off events. [2021-03-25 17:39:38,862 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:39:38,862 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 8. Compared 92 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. [2021-03-25 17:39:38,862 INFO L142 LiptonReduction]: Number of co-enabled transitions 440 [2021-03-25 17:39:38,962 INFO L154 LiptonReduction]: Checked pairs total: 890 [2021-03-25 17:39:38,962 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 17:39:38,963 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 105 [2021-03-25 17:39:38,965 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-25 17:39:38,965 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:39:38,965 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:39:38,965 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-25 17:39:38,965 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:39:38,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:39:38,966 INFO L82 PathProgramCache]: Analyzing trace with hash 109667652, now seen corresponding path program 1 times [2021-03-25 17:39:38,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:39:38,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689054895] [2021-03-25 17:39:38,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:39:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:39:38,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:39:38,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:39:38,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:39:38,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:39:38,991 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-25 17:39:38,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:39:38,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:39:38,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689054895] [2021-03-25 17:39:38,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:39:38,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 17:39:38,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256252010] [2021-03-25 17:39:38,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 17:39:38,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:39:38,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 17:39:38,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 17:39:38,996 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2021-03-25 17:39:38,996 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 78 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) [2021-03-25 17:39:38,996 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:39:38,996 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2021-03-25 17:39:38,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:39:39,380 INFO L129 PetriNetUnfolder]: 2852/4507 cut-off events. [2021-03-25 17:39:39,381 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:39:39,391 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9029 conditions, 4507 events. 2852/4507 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 27924 event pairs, 882 based on Foata normal form. 0/3624 useless extension candidates. Maximal degree in co-relation 8993. Up to 1413 conditions per place. [2021-03-25 17:39:39,422 INFO L132 encePairwiseOnDemand]: 17/31 looper letters, 38 selfloop transitions, 18 changer transitions 0/61 dead transitions. [2021-03-25 17:39:39,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 61 transitions, 266 flow [2021-03-25 17:39:39,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 17:39:39,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 17:39:39,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2021-03-25 17:39:39,426 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7032258064516129 [2021-03-25 17:39:39,426 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 109 transitions. [2021-03-25 17:39:39,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 109 transitions. [2021-03-25 17:39:39,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:39:39,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 109 transitions. [2021-03-25 17:39:39,429 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) [2021-03-25 17:39:39,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 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) [2021-03-25 17:39:39,430 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 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) [2021-03-25 17:39:39,430 INFO L185 Difference]: Start difference. First operand has 32 places, 23 transitions, 78 flow. Second operand 5 states and 109 transitions. [2021-03-25 17:39:39,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 61 transitions, 266 flow [2021-03-25 17:39:39,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 61 transitions, 254 flow, removed 6 selfloop flow, removed 0 redundant places. [2021-03-25 17:39:39,433 INFO L241 Difference]: Finished difference. Result has 40 places, 40 transitions, 222 flow [2021-03-25 17:39:39,433 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=222, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2021-03-25 17:39:39,433 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 8 predicate places. [2021-03-25 17:39:39,433 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:39:39,434 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 40 transitions, 222 flow [2021-03-25 17:39:39,434 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 40 transitions, 222 flow [2021-03-25 17:39:39,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 40 transitions, 222 flow [2021-03-25 17:39:39,633 INFO L129 PetriNetUnfolder]: 1415/2355 cut-off events. [2021-03-25 17:39:39,633 INFO L130 PetriNetUnfolder]: For 1007/1014 co-relation queries the response was YES. [2021-03-25 17:39:39,639 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7004 conditions, 2355 events. 1415/2355 cut-off events. For 1007/1014 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 14898 event pairs, 607 based on Foata normal form. 1/2352 useless extension candidates. Maximal degree in co-relation 6983. Up to 1226 conditions per place. [2021-03-25 17:39:39,662 INFO L142 LiptonReduction]: Number of co-enabled transitions 370 [2021-03-25 17:39:39,673 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:39:39,674 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:39:39,674 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 241 [2021-03-25 17:39:39,675 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 222 flow [2021-03-25 17:39:39,675 INFO L481 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) [2021-03-25 17:39:39,675 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:39:39,675 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-25 17:39:39,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 17:39:39,676 INFO L428 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:39:39,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:39:39,676 INFO L82 PathProgramCache]: Analyzing trace with hash -894759565, now seen corresponding path program 1 times [2021-03-25 17:39:39,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:39:39,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204239813] [2021-03-25 17:39:39,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:39:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:39:39,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:39:39,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:39:39,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:39:39,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:39:39,729 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-25 17:39:39,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:39:39,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-25 17:39:39,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204239813] [2021-03-25 17:39:39,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:39:39,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 17:39:39,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735277976] [2021-03-25 17:39:39,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 17:39:39,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:39:39,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 17:39:39,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 17:39:39,736 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2021-03-25 17:39:39,736 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 222 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) [2021-03-25 17:39:39,736 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:39:39,736 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2021-03-25 17:39:39,737 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:39:40,555 INFO L129 PetriNetUnfolder]: 5089/8173 cut-off events. [2021-03-25 17:39:40,555 INFO L130 PetriNetUnfolder]: For 3623/3623 co-relation queries the response was YES. [2021-03-25 17:39:40,591 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30065 conditions, 8173 events. 5089/8173 cut-off events. For 3623/3623 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 57423 event pairs, 1338 based on Foata normal form. 345/8514 useless extension candidates. Maximal degree in co-relation 30014. Up to 3282 conditions per place. [2021-03-25 17:39:40,752 INFO L132 encePairwiseOnDemand]: 17/31 looper letters, 56 selfloop transitions, 45 changer transitions 0/106 dead transitions. [2021-03-25 17:39:40,753 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 106 transitions, 789 flow [2021-03-25 17:39:40,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 17:39:40,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 17:39:40,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2021-03-25 17:39:40,757 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6838709677419355 [2021-03-25 17:39:40,758 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 106 transitions. [2021-03-25 17:39:40,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 106 transitions. [2021-03-25 17:39:40,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:39:40,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 106 transitions. [2021-03-25 17:39:40,763 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) [2021-03-25 17:39:40,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 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) [2021-03-25 17:39:40,765 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 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) [2021-03-25 17:39:40,765 INFO L185 Difference]: Start difference. First operand has 40 places, 40 transitions, 222 flow. Second operand 5 states and 106 transitions. [2021-03-25 17:39:40,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 106 transitions, 789 flow [2021-03-25 17:39:40,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 106 transitions, 789 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 17:39:40,840 INFO L241 Difference]: Finished difference. Result has 48 places, 81 transitions, 712 flow [2021-03-25 17:39:40,841 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=712, PETRI_PLACES=48, PETRI_TRANSITIONS=81} [2021-03-25 17:39:40,841 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 16 predicate places. [2021-03-25 17:39:40,841 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:39:40,842 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 81 transitions, 712 flow [2021-03-25 17:39:40,842 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 81 transitions, 712 flow [2021-03-25 17:39:40,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 81 transitions, 712 flow [2021-03-25 17:39:41,491 INFO L129 PetriNetUnfolder]: 3209/5348 cut-off events. [2021-03-25 17:39:41,492 INFO L130 PetriNetUnfolder]: For 9470/9687 co-relation queries the response was YES. [2021-03-25 17:39:41,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24024 conditions, 5348 events. 3209/5348 cut-off events. For 9470/9687 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 38580 event pairs, 928 based on Foata normal form. 28/5249 useless extension candidates. Maximal degree in co-relation 23997. Up to 2508 conditions per place. [2021-03-25 17:39:41,564 INFO L142 LiptonReduction]: Number of co-enabled transitions 716 [2021-03-25 17:39:41,590 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:39:41,590 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:39:41,590 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 749 [2021-03-25 17:39:41,594 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 81 transitions, 712 flow [2021-03-25 17:39:41,594 INFO L481 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) [2021-03-25 17:39:41,594 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:39:41,594 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-25 17:39:41,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 17:39:41,595 INFO L428 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:39:41,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:39:41,595 INFO L82 PathProgramCache]: Analyzing trace with hash -894746661, now seen corresponding path program 1 times [2021-03-25 17:39:41,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:39:41,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681131759] [2021-03-25 17:39:41,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:39:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 17:39:41,600 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 17:39:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 17:39:41,611 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 17:39:41,614 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 17:39:41,615 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 17:39:41,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 17:39:41,615 WARN L342 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-25 17:39:41,615 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2021-03-25 17:39:41,620 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:41,620 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:41,620 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:41,620 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:41,623 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:41,623 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:41,623 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:41,623 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:41,623 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:41,624 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:41,624 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:41,624 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:41,625 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:41,625 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:41,625 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:41,625 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:41,625 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:41,625 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:41,625 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:41,625 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:41,626 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:41,627 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:41,628 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:41,628 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:41,629 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:41,629 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 17:39:41,629 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-03-25 17:39:41,630 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 17:39:41,630 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 17:39:41,630 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 17:39:41,631 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 17:39:41,631 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 17:39:41,631 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 17:39:41,631 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 17:39:41,631 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 17:39:41,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 33 transitions, 111 flow [2021-03-25 17:39:41,636 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-03-25 17:39:41,636 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:39:41,636 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 116 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. [2021-03-25 17:39:41,636 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 33 transitions, 111 flow [2021-03-25 17:39:41,637 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 33 transitions, 111 flow [2021-03-25 17:39:41,637 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:39:41,637 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 33 transitions, 111 flow [2021-03-25 17:39:41,637 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 33 transitions, 111 flow [2021-03-25 17:39:41,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 33 transitions, 111 flow [2021-03-25 17:39:41,639 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-03-25 17:39:41,639 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:39:41,639 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 8. Compared 139 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. [2021-03-25 17:39:41,640 INFO L142 LiptonReduction]: Number of co-enabled transitions 700 [2021-03-25 17:39:41,769 INFO L154 LiptonReduction]: Checked pairs total: 1466 [2021-03-25 17:39:41,769 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 17:39:41,769 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 132 [2021-03-25 17:39:41,771 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-25 17:39:41,771 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:39:41,771 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:39:41,771 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-25 17:39:41,771 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:39:41,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:39:41,771 INFO L82 PathProgramCache]: Analyzing trace with hash 145120927, now seen corresponding path program 1 times [2021-03-25 17:39:41,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:39:41,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663943996] [2021-03-25 17:39:41,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:39:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:39:41,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:39:41,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:39:41,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:39:41,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:39:41,793 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-25 17:39:41,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:39:41,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:39:41,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663943996] [2021-03-25 17:39:41,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:39:41,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 17:39:41,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312013260] [2021-03-25 17:39:41,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 17:39:41,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:39:41,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 17:39:41,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 17:39:41,797 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2021-03-25 17:39:41,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 101 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) [2021-03-25 17:39:41,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:39:41,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2021-03-25 17:39:41,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:39:44,099 INFO L129 PetriNetUnfolder]: 22065/31144 cut-off events. [2021-03-25 17:39:44,099 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:39:44,230 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62309 conditions, 31144 events. 22065/31144 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1684. Compared 204207 event pairs, 6846 based on Foata normal form. 0/25506 useless extension candidates. Maximal degree in co-relation 62263. Up to 10043 conditions per place. [2021-03-25 17:39:44,499 INFO L132 encePairwiseOnDemand]: 21/38 looper letters, 48 selfloop transitions, 22 changer transitions 0/76 dead transitions. [2021-03-25 17:39:44,499 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 76 transitions, 337 flow [2021-03-25 17:39:44,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 17:39:44,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 17:39:44,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2021-03-25 17:39:44,502 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7105263157894737 [2021-03-25 17:39:44,502 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 135 transitions. [2021-03-25 17:39:44,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 135 transitions. [2021-03-25 17:39:44,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:39:44,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 135 transitions. [2021-03-25 17:39:44,503 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) [2021-03-25 17:39:44,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 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) [2021-03-25 17:39:44,504 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 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) [2021-03-25 17:39:44,504 INFO L185 Difference]: Start difference. First operand has 39 places, 28 transitions, 101 flow. Second operand 5 states and 135 transitions. [2021-03-25 17:39:44,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 76 transitions, 337 flow [2021-03-25 17:39:44,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 76 transitions, 317 flow, removed 10 selfloop flow, removed 0 redundant places. [2021-03-25 17:39:44,507 INFO L241 Difference]: Finished difference. Result has 47 places, 49 transitions, 273 flow [2021-03-25 17:39:44,508 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=273, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2021-03-25 17:39:44,508 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 8 predicate places. [2021-03-25 17:39:44,508 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:39:44,508 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 49 transitions, 273 flow [2021-03-25 17:39:44,508 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 49 transitions, 273 flow [2021-03-25 17:39:44,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 273 flow [2021-03-25 17:39:45,352 INFO L129 PetriNetUnfolder]: 8596/12613 cut-off events. [2021-03-25 17:39:45,353 INFO L130 PetriNetUnfolder]: For 5746/5779 co-relation queries the response was YES. [2021-03-25 17:39:45,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37592 conditions, 12613 events. 8596/12613 cut-off events. For 5746/5779 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 83744 event pairs, 3468 based on Foata normal form. 12/12570 useless extension candidates. Maximal degree in co-relation 37570. Up to 6669 conditions per place. [2021-03-25 17:39:45,573 INFO L142 LiptonReduction]: Number of co-enabled transitions 578 [2021-03-25 17:39:46,049 INFO L154 LiptonReduction]: Checked pairs total: 106 [2021-03-25 17:39:46,049 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:39:46,049 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1541 [2021-03-25 17:39:46,050 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 273 flow [2021-03-25 17:39:46,050 INFO L481 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) [2021-03-25 17:39:46,050 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:39:46,050 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-25 17:39:46,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 17:39:46,050 INFO L428 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:39:46,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:39:46,051 INFO L82 PathProgramCache]: Analyzing trace with hash 204589902, now seen corresponding path program 1 times [2021-03-25 17:39:46,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:39:46,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614099431] [2021-03-25 17:39:46,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:39:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:39:46,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:39:46,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:39:46,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:39:46,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:39:46,074 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-25 17:39:46,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:39:46,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-25 17:39:46,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614099431] [2021-03-25 17:39:46,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:39:46,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 17:39:46,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290737060] [2021-03-25 17:39:46,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 17:39:46,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:39:46,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 17:39:46,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 17:39:46,078 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2021-03-25 17:39:46,078 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 273 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) [2021-03-25 17:39:46,078 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:39:46,078 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2021-03-25 17:39:46,078 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:39:51,162 INFO L129 PetriNetUnfolder]: 41526/59126 cut-off events. [2021-03-25 17:39:51,162 INFO L130 PetriNetUnfolder]: For 24287/24287 co-relation queries the response was YES. [2021-03-25 17:39:51,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 213625 conditions, 59126 events. 41526/59126 cut-off events. For 24287/24287 co-relation queries the response was YES. Maximal size of possible extension queue 3304. Compared 428547 event pairs, 15155 based on Foata normal form. 2010/61115 useless extension candidates. Maximal degree in co-relation 136267. Up to 23529 conditions per place. [2021-03-25 17:39:51,768 INFO L132 encePairwiseOnDemand]: 21/38 looper letters, 70 selfloop transitions, 56 changer transitions 0/132 dead transitions. [2021-03-25 17:39:51,768 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 132 transitions, 980 flow [2021-03-25 17:39:51,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 17:39:51,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 17:39:51,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2021-03-25 17:39:51,769 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6894736842105263 [2021-03-25 17:39:51,770 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 131 transitions. [2021-03-25 17:39:51,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 131 transitions. [2021-03-25 17:39:51,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:39:51,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 131 transitions. [2021-03-25 17:39:51,770 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) [2021-03-25 17:39:51,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 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) [2021-03-25 17:39:51,772 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 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) [2021-03-25 17:39:51,772 INFO L185 Difference]: Start difference. First operand has 47 places, 49 transitions, 273 flow. Second operand 5 states and 131 transitions. [2021-03-25 17:39:51,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 132 transitions, 980 flow [2021-03-25 17:39:51,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 132 transitions, 980 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 17:39:51,922 INFO L241 Difference]: Finished difference. Result has 55 places, 100 transitions, 883 flow [2021-03-25 17:39:51,922 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=883, PETRI_PLACES=55, PETRI_TRANSITIONS=100} [2021-03-25 17:39:51,922 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 16 predicate places. [2021-03-25 17:39:51,922 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:39:51,923 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 100 transitions, 883 flow [2021-03-25 17:39:51,923 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 100 transitions, 883 flow [2021-03-25 17:39:51,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 100 transitions, 883 flow [2021-03-25 17:39:53,965 INFO L129 PetriNetUnfolder]: 20318/29865 cut-off events. [2021-03-25 17:39:53,965 INFO L130 PetriNetUnfolder]: For 57173/58430 co-relation queries the response was YES. [2021-03-25 17:39:54,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135001 conditions, 29865 events. 20318/29865 cut-off events. For 57173/58430 co-relation queries the response was YES. Maximal size of possible extension queue 2088. Compared 222342 event pairs, 6220 based on Foata normal form. 80/29203 useless extension candidates. Maximal degree in co-relation 134973. Up to 14223 conditions per place. [2021-03-25 17:39:54,557 INFO L142 LiptonReduction]: Number of co-enabled transitions 1160 [2021-03-25 17:39:54,633 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:39:54,633 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:39:54,633 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2711 [2021-03-25 17:39:54,634 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 100 transitions, 883 flow [2021-03-25 17:39:54,634 INFO L481 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) [2021-03-25 17:39:54,634 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:39:54,634 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:39:54,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 17:39:54,634 INFO L428 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:39:54,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:39:54,634 INFO L82 PathProgramCache]: Analyzing trace with hash 2048027829, now seen corresponding path program 1 times [2021-03-25 17:39:54,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:39:54,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500115360] [2021-03-25 17:39:54,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:39:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 17:39:54,639 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 17:39:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 17:39:54,640 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 17:39:54,642 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 17:39:54,642 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 17:39:54,642 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 17:39:54,642 WARN L342 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-25 17:39:54,642 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2021-03-25 17:39:54,647 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,647 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,647 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,647 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,647 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,648 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,648 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,648 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,648 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,648 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,648 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,648 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,648 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,648 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,649 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,649 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,649 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,649 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,649 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,649 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,649 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,649 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,649 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,649 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,650 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,651 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,652 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,652 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,665 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,665 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:39:54,666 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 17:39:54,666 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-03-25 17:39:54,666 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 17:39:54,667 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 17:39:54,667 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 17:39:54,667 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 17:39:54,667 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 17:39:54,667 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 17:39:54,667 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 17:39:54,667 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 17:39:54,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 39 transitions, 138 flow [2021-03-25 17:39:54,669 INFO L129 PetriNetUnfolder]: 0/45 cut-off events. [2021-03-25 17:39:54,669 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:39:54,669 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 149 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. [2021-03-25 17:39:54,669 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 39 transitions, 138 flow [2021-03-25 17:39:54,669 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 138 flow [2021-03-25 17:39:54,670 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:39:54,670 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 39 transitions, 138 flow [2021-03-25 17:39:54,670 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 39 transitions, 138 flow [2021-03-25 17:39:54,670 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 39 transitions, 138 flow [2021-03-25 17:39:54,672 INFO L129 PetriNetUnfolder]: 0/45 cut-off events. [2021-03-25 17:39:54,672 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:39:54,672 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 9. Compared 157 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. [2021-03-25 17:39:54,672 INFO L142 LiptonReduction]: Number of co-enabled transitions 1020 [2021-03-25 17:39:54,790 INFO L154 LiptonReduction]: Checked pairs total: 2120 [2021-03-25 17:39:54,790 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-25 17:39:54,790 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 120 [2021-03-25 17:39:54,791 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-25 17:39:54,791 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:39:54,791 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:39:54,791 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-25 17:39:54,791 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:39:54,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:39:54,792 INFO L82 PathProgramCache]: Analyzing trace with hash 187284127, now seen corresponding path program 1 times [2021-03-25 17:39:54,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:39:54,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579627872] [2021-03-25 17:39:54,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:39:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:39:54,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:39:54,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:39:54,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:39:54,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:39:54,836 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-25 17:39:54,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:39:54,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:39:54,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579627872] [2021-03-25 17:39:54,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:39:54,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 17:39:54,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687656739] [2021-03-25 17:39:54,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 17:39:54,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:39:54,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 17:39:54,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 17:39:54,840 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2021-03-25 17:39:54,841 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 126 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) [2021-03-25 17:39:54,841 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:39:54,841 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2021-03-25 17:39:54,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:40:17,015 INFO L129 PetriNetUnfolder]: 151182/199409 cut-off events. [2021-03-25 17:40:17,016 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:40:17,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 398846 conditions, 199409 events. 151182/199409 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8130. Compared 1347972 event pairs, 46742 based on Foata normal form. 0/165338 useless extension candidates. Maximal degree in co-relation 398789. Up to 64869 conditions per place. [2021-03-25 17:40:18,763 INFO L132 encePairwiseOnDemand]: 25/45 looper letters, 58 selfloop transitions, 26 changer transitions 0/91 dead transitions. [2021-03-25 17:40:18,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 91 transitions, 410 flow [2021-03-25 17:40:18,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 17:40:18,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 17:40:18,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2021-03-25 17:40:18,765 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7155555555555555 [2021-03-25 17:40:18,765 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 161 transitions. [2021-03-25 17:40:18,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 161 transitions. [2021-03-25 17:40:18,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:40:18,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 161 transitions. [2021-03-25 17:40:18,766 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) [2021-03-25 17:40:18,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 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) [2021-03-25 17:40:18,766 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 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) [2021-03-25 17:40:18,766 INFO L185 Difference]: Start difference. First operand has 46 places, 33 transitions, 126 flow. Second operand 5 states and 161 transitions. [2021-03-25 17:40:18,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 91 transitions, 410 flow [2021-03-25 17:40:18,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 91 transitions, 380 flow, removed 15 selfloop flow, removed 0 redundant places. [2021-03-25 17:40:18,768 INFO L241 Difference]: Finished difference. Result has 54 places, 58 transitions, 324 flow [2021-03-25 17:40:18,772 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=54, PETRI_TRANSITIONS=58} [2021-03-25 17:40:18,772 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 8 predicate places. [2021-03-25 17:40:18,772 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:40:18,772 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 58 transitions, 324 flow [2021-03-25 17:40:18,772 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 58 transitions, 324 flow [2021-03-25 17:40:18,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 58 transitions, 324 flow [2021-03-25 17:40:23,197 INFO L129 PetriNetUnfolder]: 46366/63124 cut-off events. [2021-03-25 17:40:23,197 INFO L130 PetriNetUnfolder]: For 29157/29817 co-relation queries the response was YES. [2021-03-25 17:40:23,479 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188371 conditions, 63124 events. 46366/63124 cut-off events. For 29157/29817 co-relation queries the response was YES. Maximal size of possible extension queue 3337. Compared 429777 event pairs, 22858 based on Foata normal form. 1/63056 useless extension candidates. Maximal degree in co-relation 188348. Up to 33373 conditions per place. [2021-03-25 17:40:24,251 INFO L142 LiptonReduction]: Number of co-enabled transitions 832 [2021-03-25 17:40:33,676 INFO L154 LiptonReduction]: Checked pairs total: 44 [2021-03-25 17:40:33,676 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:40:33,677 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 14905 [2021-03-25 17:40:33,677 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 58 transitions, 324 flow [2021-03-25 17:40:33,677 INFO L481 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) [2021-03-25 17:40:33,677 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:40:33,677 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-25 17:40:33,677 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-25 17:40:33,678 INFO L428 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:40:33,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:40:33,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1511038456, now seen corresponding path program 1 times [2021-03-25 17:40:33,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:40:33,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582884136] [2021-03-25 17:40:33,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:40:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:40:33,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:40:33,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:40:33,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:40:33,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:40:33,697 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-25 17:40:33,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:40:33,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-25 17:40:33,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582884136] [2021-03-25 17:40:33,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:40:33,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 17:40:33,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040143389] [2021-03-25 17:40:33,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 17:40:33,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:40:33,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 17:40:33,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 17:40:33,701 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2021-03-25 17:40:33,701 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 58 transitions, 324 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) [2021-03-25 17:40:33,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:40:33,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2021-03-25 17:40:33,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:41:53,780 INFO L129 PetriNetUnfolder]: 290971/385945 cut-off events. [2021-03-25 17:41:53,781 INFO L130 PetriNetUnfolder]: For 168541/168541 co-relation queries the response was YES. [2021-03-25 17:41:55,356 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1378680 conditions, 385945 events. 290971/385945 cut-off events. For 168541/168541 co-relation queries the response was YES. Maximal size of possible extension queue 16280. Compared 2835859 event pairs, 77696 based on Foata normal form. 11295/397166 useless extension candidates. Maximal degree in co-relation 995116. Up to 151596 conditions per place. [2021-03-25 17:41:57,609 INFO L132 encePairwiseOnDemand]: 25/45 looper letters, 84 selfloop transitions, 67 changer transitions 0/158 dead transitions. [2021-03-25 17:41:57,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 158 transitions, 1171 flow [2021-03-25 17:41:57,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 17:41:57,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 17:41:57,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2021-03-25 17:41:57,610 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6933333333333334 [2021-03-25 17:41:57,610 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 156 transitions. [2021-03-25 17:41:57,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 156 transitions. [2021-03-25 17:41:57,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:41:57,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 156 transitions. [2021-03-25 17:41:57,611 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) [2021-03-25 17:41:57,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 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) [2021-03-25 17:41:57,612 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 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) [2021-03-25 17:41:57,612 INFO L185 Difference]: Start difference. First operand has 54 places, 58 transitions, 324 flow. Second operand 5 states and 156 transitions. [2021-03-25 17:41:57,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 158 transitions, 1171 flow [2021-03-25 17:41:59,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 158 transitions, 1171 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 17:41:59,012 INFO L241 Difference]: Finished difference. Result has 62 places, 119 transitions, 1054 flow [2021-03-25 17:41:59,012 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1054, PETRI_PLACES=62, PETRI_TRANSITIONS=119} [2021-03-25 17:41:59,013 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2021-03-25 17:41:59,013 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:41:59,013 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 119 transitions, 1054 flow [2021-03-25 17:41:59,013 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 119 transitions, 1054 flow [2021-03-25 17:41:59,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 119 transitions, 1054 flow [2021-03-25 17:42:17,454 INFO L129 PetriNetUnfolder]: 112176/152922 cut-off events. [2021-03-25 17:42:17,454 INFO L130 PetriNetUnfolder]: For 267865/272688 co-relation queries the response was YES. [2021-03-25 17:42:18,195 INFO L84 FinitePrefix]: Finished finitePrefix Result has 692743 conditions, 152922 events. 112176/152922 cut-off events. For 267865/272688 co-relation queries the response was YES. Maximal size of possible extension queue 8308. Compared 1138673 event pairs, 34690 based on Foata normal form. 353/150080 useless extension candidates. Maximal degree in co-relation 692714. Up to 74289 conditions per place. [2021-03-25 17:42:20,057 INFO L142 LiptonReduction]: Number of co-enabled transitions 1710 [2021-03-25 17:42:25,722 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:42:25,722 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:42:25,722 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 26709 [2021-03-25 17:42:25,723 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 119 transitions, 1054 flow [2021-03-25 17:42:25,723 INFO L481 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) [2021-03-25 17:42:25,723 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:42:25,723 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:42:25,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-25 17:42:25,723 INFO L428 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:42:25,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:42:25,724 INFO L82 PathProgramCache]: Analyzing trace with hash -401922614, now seen corresponding path program 1 times [2021-03-25 17:42:25,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:42:25,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582432732] [2021-03-25 17:42:25,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:42:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:42:25,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:25,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:25,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:25,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:25,744 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-25 17:42:25,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:42:25,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-03-25 17:42:25,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582432732] [2021-03-25 17:42:25,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:42:25,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 17:42:25,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361705539] [2021-03-25 17:42:25,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 17:42:25,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:42:25,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 17:42:25,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 17:42:25,747 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2021-03-25 17:42:25,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 119 transitions, 1054 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) [2021-03-25 17:42:25,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:42:25,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2021-03-25 17:42:25,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:47:19,325 INFO L129 PetriNetUnfolder]: 534473/712039 cut-off events. [2021-03-25 17:47:19,326 INFO L130 PetriNetUnfolder]: For 1201646/1201648 co-relation queries the response was YES. [2021-03-25 17:47:23,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3505864 conditions, 712039 events. 534473/712039 cut-off events. For 1201646/1201648 co-relation queries the response was YES. Maximal size of possible extension queue 31035. Compared 5630607 event pairs, 125326 based on Foata normal form. 20284/732260 useless extension candidates. Maximal degree in co-relation 3505833. Up to 279467 conditions per place. [2021-03-25 17:47:27,694 INFO L132 encePairwiseOnDemand]: 25/45 looper letters, 114 selfloop transitions, 152 changer transitions 0/273 dead transitions. [2021-03-25 17:47:27,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 273 transitions, 2951 flow [2021-03-25 17:47:27,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 17:47:27,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 17:47:27,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2021-03-25 17:47:27,706 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6933333333333334 [2021-03-25 17:47:27,706 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 156 transitions. [2021-03-25 17:47:27,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 156 transitions. [2021-03-25 17:47:27,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:47:27,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 156 transitions. [2021-03-25 17:47:27,707 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) [2021-03-25 17:47:27,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 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) [2021-03-25 17:47:27,707 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 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) [2021-03-25 17:47:27,707 INFO L185 Difference]: Start difference. First operand has 62 places, 119 transitions, 1054 flow. Second operand 5 states and 156 transitions. [2021-03-25 17:47:27,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 273 transitions, 2951 flow [2021-03-25 17:47:38,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 273 transitions, 2951 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 17:47:38,684 INFO L241 Difference]: Finished difference. Result has 69 places, 228 transitions, 2731 flow [2021-03-25 17:47:38,684 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1054, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2731, PETRI_PLACES=69, PETRI_TRANSITIONS=228} [2021-03-25 17:47:38,684 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2021-03-25 17:47:38,685 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:47:38,685 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 228 transitions, 2731 flow [2021-03-25 17:47:38,685 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 228 transitions, 2731 flow [2021-03-25 17:47:38,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 228 transitions, 2731 flow [2021-03-25 17:48:46,448 INFO L129 PetriNetUnfolder]: 257847/351439 cut-off events. [2021-03-25 17:48:46,448 INFO L130 PetriNetUnfolder]: For 1243270/1258450 co-relation queries the response was YES. [2021-03-25 17:48:49,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1975618 conditions, 351439 events. 257847/351439 cut-off events. For 1243270/1258450 co-relation queries the response was YES. Maximal size of possible extension queue 20120. Compared 2864155 event pairs, 65702 based on Foata normal form. 2152/340693 useless extension candidates. Maximal degree in co-relation 1975584. Up to 164991 conditions per place. [2021-03-25 17:48:53,725 INFO L142 LiptonReduction]: Number of co-enabled transitions 3012 [2021-03-25 17:49:04,280 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:49:04,281 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:49:04,281 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 85596 [2021-03-25 17:49:04,281 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 228 transitions, 2731 flow [2021-03-25 17:49:04,281 INFO L481 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) [2021-03-25 17:49:04,282 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:49:04,282 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:49:04,282 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-25 17:49:04,282 INFO L428 AbstractCegarLoop]: === Iteration 4 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:49:04,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:49:04,282 INFO L82 PathProgramCache]: Analyzing trace with hash 219245625, now seen corresponding path program 1 times [2021-03-25 17:49:04,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:49:04,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925827020] [2021-03-25 17:49:04,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:49:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:49:04,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:49:04,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:49:04,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:49:04,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:49:04,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:49:04,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:49:04,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:49:04,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:49:04,312 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-25 17:49:04,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:49:04,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-25 17:49:04,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925827020] [2021-03-25 17:49:04,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:49:04,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:49:04,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229795818] [2021-03-25 17:49:04,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 17:49:04,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:49:04,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 17:49:04,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 17:49:04,317 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2021-03-25 17:49:04,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 228 transitions, 2731 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2021-03-25 17:49:04,317 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:49:04,317 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2021-03-25 17:49:04,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2021-03-25 17:52:01,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 17:52:01,136 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-25 17:52:01,136 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-25 17:52:01,139 WARN L224 ceAbstractionStarter]: Timeout [2021-03-25 17:52:01,139 INFO L202 PluginConnector]: Adding new model fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:52:01 BasicIcfg [2021-03-25 17:52:01,139 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 17:52:01,140 INFO L168 Benchmark]: Toolchain (without parser) took 743747.82 ms. Allocated memory was 255.9 MB in the beginning and 15.4 GB in the end (delta: 15.1 GB). Free memory was 236.5 MB in the beginning and 9.6 GB in the end (delta: -9.4 GB). Peak memory consumption was 7.8 GB. Max. memory is 16.0 GB. [2021-03-25 17:52:01,140 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.5 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 17:52:01,140 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.05 ms. Allocated memory is still 255.9 MB. Free memory was 236.4 MB in the beginning and 235.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 17:52:01,141 INFO L168 Benchmark]: Boogie Preprocessor took 12.48 ms. Allocated memory is still 255.9 MB. Free memory was 235.0 MB in the beginning and 234.0 MB in the end (delta: 955.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 17:52:01,141 INFO L168 Benchmark]: RCFGBuilder took 211.46 ms. Allocated memory is still 255.9 MB. Free memory was 234.0 MB in the beginning and 226.4 MB in the end (delta: 7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-25 17:52:01,141 INFO L168 Benchmark]: TraceAbstraction took 743496.54 ms. Allocated memory was 255.9 MB in the beginning and 15.4 GB in the end (delta: 15.1 GB). Free memory was 226.1 MB in the beginning and 9.6 GB in the end (delta: -9.4 GB). Peak memory consumption was 7.8 GB. Max. memory is 16.0 GB. [2021-03-25 17:52:01,142 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 255.9 MB. Free memory is still 237.5 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.05 ms. Allocated memory is still 255.9 MB. Free memory was 236.4 MB in the beginning and 235.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.48 ms. Allocated memory is still 255.9 MB. Free memory was 235.0 MB in the beginning and 234.0 MB in the end (delta: 955.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 211.46 ms. Allocated memory is still 255.9 MB. Free memory was 234.0 MB in the beginning and 226.4 MB in the end (delta: 7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 743496.54 ms. Allocated memory was 255.9 MB in the beginning and 15.4 GB in the end (delta: 15.1 GB). Free memory was 226.1 MB in the beginning and 9.6 GB in the end (delta: -9.4 GB). Peak memory consumption was 7.8 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 96.2ms, 12 PlacesBefore, 9 PlacesAfterwards, 9 TransitionsBefore, 6 TransitionsAfterwards, 20 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 8 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 136.9ms, 20 PlacesBefore, 18 PlacesAfterwards, 15 TransitionsBefore, 13 TransitionsAfterwards, 100 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 168 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 78, positive: 56, positive conditional: 0, positive unconditional: 56, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 55, positive: 42, positive conditional: 0, positive unconditional: 42, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 55, positive: 42, positive conditional: 0, positive unconditional: 42, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 55, positive: 42, positive conditional: 0, positive unconditional: 42, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 13, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 78, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 78, negative conditional: 0, negative unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 78, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 55, unknown conditional: 0, unknown unconditional: 55] , Statistics on independence cache: Total cache size (in pairs): 31, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 121.5ms, 28 PlacesBefore, 25 PlacesAfterwards, 21 TransitionsBefore, 18 TransitionsAfterwards, 240 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 486 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 121, positive: 84, positive conditional: 0, positive unconditional: 84, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 85, positive: 67, positive conditional: 0, positive unconditional: 67, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 85, positive: 67, positive conditional: 0, positive unconditional: 67, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 85, positive: 67, positive conditional: 0, positive unconditional: 67, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 18, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 69, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 69, negative conditional: 0, negative unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 121, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 85, unknown conditional: 0, unknown unconditional: 85] , Statistics on independence cache: Total cache size (in pairs): 31, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 56.7ms, 33 PlacesBefore, 33 PlacesAfterwards, 31 TransitionsBefore, 31 TransitionsAfterwards, 204 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 31, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 103.4ms, 36 PlacesBefore, 32 PlacesAfterwards, 27 TransitionsBefore, 23 TransitionsAfterwards, 440 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 890 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 270, positive: 222, positive conditional: 0, positive unconditional: 222, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 192, positive: 160, positive conditional: 0, positive unconditional: 160, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 192, positive: 160, positive conditional: 0, positive unconditional: 160, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 192, positive: 160, positive conditional: 0, positive unconditional: 160, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 32, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 71, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 71, negative conditional: 0, negative unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 270, positive: 62, positive conditional: 0, positive unconditional: 62, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 192, unknown conditional: 0, unknown unconditional: 192] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 58, Positive conditional cache size: 0, Positive unconditional cache size: 58, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 240.1ms, 40 PlacesBefore, 40 PlacesAfterwards, 40 TransitionsBefore, 40 TransitionsAfterwards, 370 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 58, Positive conditional cache size: 0, Positive unconditional cache size: 58, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 747.9ms, 48 PlacesBefore, 48 PlacesAfterwards, 81 TransitionsBefore, 81 TransitionsAfterwards, 716 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 58, Positive conditional cache size: 0, Positive unconditional cache size: 58, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 132.0ms, 44 PlacesBefore, 39 PlacesAfterwards, 33 TransitionsBefore, 28 TransitionsAfterwards, 700 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 1466 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 320, positive: 259, positive conditional: 0, positive unconditional: 259, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 250, positive: 211, positive conditional: 0, positive unconditional: 211, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 250, positive: 211, positive conditional: 0, positive unconditional: 211, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 250, positive: 211, positive conditional: 0, positive unconditional: 211, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 39, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 98, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 98, negative conditional: 0, negative unconditional: 98, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 320, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 250, unknown conditional: 0, unknown unconditional: 250] , Statistics on independence cache: Total cache size (in pairs): 91, Positive cache size: 60, Positive conditional cache size: 0, Positive unconditional cache size: 60, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1540.6ms, 47 PlacesBefore, 47 PlacesAfterwards, 49 TransitionsBefore, 49 TransitionsAfterwards, 578 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 106 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 92, Positive cache size: 60, Positive conditional cache size: 0, Positive unconditional cache size: 60, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2710.1ms, 55 PlacesBefore, 55 PlacesAfterwards, 100 TransitionsBefore, 100 TransitionsAfterwards, 1160 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 92, Positive cache size: 60, Positive conditional cache size: 0, Positive unconditional cache size: 60, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 119.9ms, 52 PlacesBefore, 46 PlacesAfterwards, 39 TransitionsBefore, 33 TransitionsAfterwards, 1020 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 2120 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 491, positive: 419, positive conditional: 0, positive unconditional: 419, negative: 72, negative conditional: 0, negative unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 389, positive: 338, positive conditional: 0, positive unconditional: 338, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 389, positive: 338, positive conditional: 0, positive unconditional: 338, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 389, positive: 338, positive conditional: 0, positive unconditional: 338, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 51, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 78, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 78, negative conditional: 0, negative unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 491, positive: 81, positive conditional: 0, positive unconditional: 81, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 389, unknown conditional: 0, unknown unconditional: 389] , Statistics on independence cache: Total cache size (in pairs): 165, Positive cache size: 123, Positive conditional cache size: 0, Positive unconditional cache size: 123, Negative cache size: 42, Negative conditional cache size: 0, Negative unconditional cache size: 42 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14904.1ms, 54 PlacesBefore, 54 PlacesAfterwards, 58 TransitionsBefore, 58 TransitionsAfterwards, 832 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 44 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 9, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 166, Positive cache size: 123, Positive conditional cache size: 0, Positive unconditional cache size: 123, Negative cache size: 43, Negative conditional cache size: 0, Negative unconditional cache size: 43 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 26709.4ms, 62 PlacesBefore, 62 PlacesAfterwards, 119 TransitionsBefore, 119 TransitionsAfterwards, 1710 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 166, Positive cache size: 123, Positive conditional cache size: 0, Positive unconditional cache size: 123, Negative cache size: 43, Negative conditional cache size: 0, Negative unconditional cache size: 43 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 85595.7ms, 69 PlacesBefore, 69 PlacesAfterwards, 228 TransitionsBefore, 228 TransitionsAfterwards, 3012 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 166, Positive cache size: 123, Positive conditional cache size: 0, Positive unconditional cache size: 123, Negative cache size: 43, Negative conditional cache size: 0, Negative unconditional cache size: 43 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 19). Cancelled while CegarLoopForPetriNetWithRepeatedLiptonReduction was enhancing Floyd-Hoare automaton (5states, 12/45 universal loopers) in iteration 4,while PetriNetUnfolder was constructing finite prefix that currently has 3214932 conditions, 571199 events (440827/571198 cut-off events. For 1718675/1718675 co-relation queries the response was YES. Maximal size of possible extension queue 40789. Compared 4437674 event pairs, 113670 based on Foata normal form. 8334/616795 useless extension candidates. Maximal degree in co-relation 3214860. Up to 214348 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 9 locations, 1 error locations. Started 6 CEGAR loops. EmptinessCheckTime: 12.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 743294.3ms, OverallIterations: 14, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 609392.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 803.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 283 SDtfs, 352 SDslu, 193 SDs, 0 SdLazy, 580 SolverSat, 114 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 433.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 9 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 199.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2731occurred in iteration=3, InterpolantAutomatonStates: 40, 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: 8.0ms SsaConstructionTime, 47.7ms SatisfiabilityAnalysisTime, 311.3ms InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 308 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 7/7 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