/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/fork_loop_local.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 03:23:29,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 03:23:29,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 03:23:29,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 03:23:29,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 03:23:29,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 03:23:29,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 03:23:29,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 03:23:29,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 03:23:29,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 03:23:29,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 03:23:29,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 03:23:29,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 03:23:29,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 03:23:29,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 03:23:29,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 03:23:29,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 03:23:29,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 03:23:29,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 03:23:29,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 03:23:29,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 03:23:29,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 03:23:29,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 03:23:29,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 03:23:29,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-26 03:23:29,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-26 03:23:29,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-26 03:23:29,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-26 03:23:29,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-26 03:23:29,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-26 03:23:29,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 03:23:29,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 03:23:29,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 03:23:29,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 03:23:29,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 03:23:29,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 03:23:29,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 03:23:29,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 03:23:29,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 03:23:29,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 03:23:29,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 03:23:29,961 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-RepeatedSemanticLbeWithPredicates.epf [2021-03-26 03:23:29,995 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 03:23:29,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 03:23:29,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 03:23:29,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 03:23:29,999 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 03:23:30,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 03:23:30,000 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 03:23:30,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 03:23:30,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 03:23:30,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 03:23:30,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 03:23:30,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 03:23:30,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 03:23:30,001 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 03:23:30,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 03:23:30,002 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 03:23:30,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 03:23:30,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 03:23:30,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 03:23:30,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 03:23:30,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 03:23:30,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 03:23:30,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 03:23:30,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 03:23:30,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 03:23:30,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 03:23:30,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 03:23:30,003 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 03:23:30,003 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 03:23:30,004 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 03:23:30,004 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 03:23:30,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 03:23:30,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 03:23:30,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 03:23:30,334 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-26 03:23:30,336 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-26 03:23:30,337 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_local.bpl [2021-03-26 03:23:30,338 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_local.bpl' [2021-03-26 03:23:30,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 03:23:30,373 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-26 03:23:30,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 03:23:30,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 03:23:30,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 03:23:30,384 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 26.03 03:23:30" (1/1) ... [2021-03-26 03:23:30,389 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 26.03 03:23:30" (1/1) ... [2021-03-26 03:23:30,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 03:23:30,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 03:23:30,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 03:23:30,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 03:23:30,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:23:30" (1/1) ... [2021-03-26 03:23:30,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:23:30" (1/1) ... [2021-03-26 03:23:30,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:23:30" (1/1) ... [2021-03-26 03:23:30,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:23:30" (1/1) ... [2021-03-26 03:23:30,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:23:30" (1/1) ... [2021-03-26 03:23:30,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:23:30" (1/1) ... [2021-03-26 03:23:30,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:23:30" (1/1) ... [2021-03-26 03:23:30,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 03:23:30,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 03:23:30,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 03:23:30,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 03:23:30,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:23:30" (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 [2021-03-26 03:23:30,479 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-26 03:23:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 03:23:30,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 03:23:30,480 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread given in one single declaration [2021-03-26 03:23:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-03-26 03:23:30,480 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-03-26 03:23:30,481 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 03:23:30,612 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 03:23:30,613 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-03-26 03:23:30,614 INFO L202 PluginConnector]: Adding new model fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 03:23:30 BoogieIcfgContainer [2021-03-26 03:23:30,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 03:23:30,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 03:23:30,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 03:23:30,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 03:23:30,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:23:30" (1/2) ... [2021-03-26 03:23:30,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fd6886e and model type fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 03:23:30, skipping insertion in model container [2021-03-26 03:23:30,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 03:23:30" (2/2) ... [2021-03-26 03:23:30,622 INFO L111 eAbstractionObserver]: Analyzing ICFG fork_loop_local.bpl [2021-03-26 03:23:30,631 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 03:23:30,635 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 03:23:30,636 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 03:23:30,660 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:30,661 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:30,662 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:30,663 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:30,669 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:30,673 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:23:30,690 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-26 03:23:30,719 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:23:30,719 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:23:30,719 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:23:30,719 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:23:30,720 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:23:30,720 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:23:30,720 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:23:30,720 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:23:30,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 12 places, 9 transitions, 23 flow [2021-03-26 03:23:30,740 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-26 03:23:30,741 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:23:30,742 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. [2021-03-26 03:23:30,742 INFO L82 GeneralOperation]: Start removeDead. Operand has 12 places, 9 transitions, 23 flow [2021-03-26 03:23:30,745 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 12 places, 9 transitions, 23 flow [2021-03-26 03:23:30,746 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:23:30,758 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 12 places, 9 transitions, 23 flow [2021-03-26 03:23:30,760 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 12 places, 9 transitions, 23 flow [2021-03-26 03:23:30,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 12 places, 9 transitions, 23 flow [2021-03-26 03:23:30,764 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-26 03:23:30,764 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:23:30,765 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. [2021-03-26 03:23:30,766 INFO L142 LiptonReduction]: Number of co-enabled transitions 20 [2021-03-26 03:23:30,899 INFO L154 LiptonReduction]: Checked pairs total: 8 [2021-03-26 03:23:30,899 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-26 03:23:30,901 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 156 [2021-03-26 03:23:30,908 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2021-03-26 03:23:30,908 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:23:30,908 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:23:30,909 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2021-03-26 03:23:30,909 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-26 03:23:30,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:23:30,914 INFO L82 PathProgramCache]: Analyzing trace with hash 42154, now seen corresponding path program 1 times [2021-03-26 03:23:30,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:23:30,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056247971] [2021-03-26 03:23:30,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:23:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:23:30,981 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:23:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:23:30,984 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:23:30,997 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:23:30,998 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:23:30,998 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 03:23:30,999 WARN L342 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:23:30,999 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-03-26 03:23:31,004 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,005 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,005 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,005 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,006 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,006 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,006 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,006 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,007 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,008 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,009 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:23:31,010 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-26 03:23:31,012 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:23:31,012 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:23:31,012 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:23:31,012 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:23:31,012 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:23:31,013 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:23:31,013 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:23:31,013 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:23:31,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 15 transitions, 42 flow [2021-03-26 03:23:31,029 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-26 03:23:31,029 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:23:31,029 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. [2021-03-26 03:23:31,030 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 15 transitions, 42 flow [2021-03-26 03:23:31,030 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 15 transitions, 42 flow [2021-03-26 03:23:31,030 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:23:31,030 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 20 places, 15 transitions, 42 flow [2021-03-26 03:23:31,031 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 20 places, 15 transitions, 42 flow [2021-03-26 03:23:31,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 15 transitions, 42 flow [2021-03-26 03:23:31,035 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-26 03:23:31,035 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:23:31,035 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. [2021-03-26 03:23:31,036 INFO L142 LiptonReduction]: Number of co-enabled transitions 100 [2021-03-26 03:23:31,168 INFO L154 LiptonReduction]: Checked pairs total: 168 [2021-03-26 03:23:31,168 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 03:23:31,168 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 138 [2021-03-26 03:23:31,177 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-03-26 03:23:31,177 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:23:31,177 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:23:31,178 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-03-26 03:23:31,178 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:23:31,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:23:31,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1896722, now seen corresponding path program 1 times [2021-03-26 03:23:31,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:23:31,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964860319] [2021-03-26 03:23:31,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:23:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:23:31,190 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:23:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:23:31,195 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:23:31,198 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:23:31,198 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:23:31,198 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 03:23:31,199 WARN L342 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:23:31,207 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-03-26 03:23:31,211 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,212 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,212 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,212 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,212 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,213 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,213 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,213 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,213 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,213 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,214 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,214 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,214 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,215 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,216 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,217 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:23:31,217 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-26 03:23:31,223 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:23:31,223 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:23:31,223 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:23:31,224 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:23:31,224 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:23:31,224 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:23:31,224 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:23:31,224 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:23:31,225 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 21 transitions, 63 flow [2021-03-26 03:23:31,229 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-03-26 03:23:31,230 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:23:31,230 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. [2021-03-26 03:23:31,230 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 21 transitions, 63 flow [2021-03-26 03:23:31,230 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 21 transitions, 63 flow [2021-03-26 03:23:31,231 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:23:31,231 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 21 transitions, 63 flow [2021-03-26 03:23:31,231 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 21 transitions, 63 flow [2021-03-26 03:23:31,232 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 21 transitions, 63 flow [2021-03-26 03:23:31,244 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-03-26 03:23:31,245 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:23:31,245 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. [2021-03-26 03:23:31,246 INFO L142 LiptonReduction]: Number of co-enabled transitions 240 [2021-03-26 03:23:31,333 INFO L154 LiptonReduction]: Checked pairs total: 486 [2021-03-26 03:23:31,334 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 03:23:31,334 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 103 [2021-03-26 03:23:31,338 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-03-26 03:23:31,338 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:23:31,338 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:23:31,339 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-26 03:23:31,339 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:23:31,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:23:31,339 INFO L82 PathProgramCache]: Analyzing trace with hash 80894512, now seen corresponding path program 1 times [2021-03-26 03:23:31,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:23:31,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971963109] [2021-03-26 03:23:31,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:23:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:23:31,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:23:31,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:23:31,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:23:31,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:23:31,431 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 03:23:31,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 03:23:31,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:23:31,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971963109] [2021-03-26 03:23:31,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:23:31,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 03:23:31,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123992268] [2021-03-26 03:23:31,444 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 03:23:31,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:23:31,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 03:23:31,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 03:23:31,456 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2021-03-26 03:23:31,457 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) [2021-03-26 03:23:31,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:23:31,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2021-03-26 03:23:31,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:23:31,601 INFO L129 PetriNetUnfolder]: 291/578 cut-off events. [2021-03-26 03:23:31,601 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:23:31,608 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. [2021-03-26 03:23:31,615 INFO L132 encePairwiseOnDemand]: 13/24 looper letters, 28 selfloop transitions, 14 changer transitions 0/46 dead transitions. [2021-03-26 03:23:31,615 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 46 transitions, 197 flow [2021-03-26 03:23:31,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 03:23:31,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 03:23:31,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2021-03-26 03:23:31,625 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2021-03-26 03:23:31,626 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 83 transitions. [2021-03-26 03:23:31,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 83 transitions. [2021-03-26 03:23:31,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:23:31,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 83 transitions. [2021-03-26 03:23:31,630 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) [2021-03-26 03:23:31,633 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) [2021-03-26 03:23:31,634 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) [2021-03-26 03:23:31,635 INFO L185 Difference]: Start difference. First operand has 25 places, 18 transitions, 57 flow. Second operand 5 states and 83 transitions. [2021-03-26 03:23:31,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 46 transitions, 197 flow [2021-03-26 03:23:31,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 46 transitions, 191 flow, removed 3 selfloop flow, removed 0 redundant places. [2021-03-26 03:23:31,641 INFO L241 Difference]: Finished difference. Result has 33 places, 31 transitions, 171 flow [2021-03-26 03:23:31,643 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} [2021-03-26 03:23:31,643 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2021-03-26 03:23:31,644 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:23:31,644 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 31 transitions, 171 flow [2021-03-26 03:23:31,644 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 31 transitions, 171 flow [2021-03-26 03:23:31,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 31 transitions, 171 flow [2021-03-26 03:23:31,678 INFO L129 PetriNetUnfolder]: 185/396 cut-off events. [2021-03-26 03:23:31,678 INFO L130 PetriNetUnfolder]: For 167/172 co-relation queries the response was YES. [2021-03-26 03:23:31,680 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. [2021-03-26 03:23:31,685 INFO L142 LiptonReduction]: Number of co-enabled transitions 204 [2021-03-26 03:23:31,689 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:23:31,689 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:23:31,689 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 45 [2021-03-26 03:23:31,691 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 171 flow [2021-03-26 03:23:31,691 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) [2021-03-26 03:23:31,691 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:23:31,691 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-26 03:23:31,691 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 03:23:31,691 INFO L428 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:23:31,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:23:31,692 INFO L82 PathProgramCache]: Analyzing trace with hash 80901459, now seen corresponding path program 1 times [2021-03-26 03:23:31,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:23:31,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89033123] [2021-03-26 03:23:31,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:23:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:23:31,696 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:23:31,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:23:31,698 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:23:31,699 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:23:31,700 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:23:31,700 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 03:23:31,700 WARN L342 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:23:31,700 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-03-26 03:23:31,704 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,705 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,705 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,705 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,705 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,706 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,706 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,706 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,706 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,706 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,706 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,707 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,707 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,707 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,707 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,707 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,708 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,709 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,710 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,710 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:31,711 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:23:31,711 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-26 03:23:31,712 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:23:31,713 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:23:31,713 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:23:31,713 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:23:31,713 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:23:31,713 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:23:31,713 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:23:31,713 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:23:31,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 27 transitions, 86 flow [2021-03-26 03:23:31,717 INFO L129 PetriNetUnfolder]: 0/31 cut-off events. [2021-03-26 03:23:31,717 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:23:31,717 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. [2021-03-26 03:23:31,717 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 27 transitions, 86 flow [2021-03-26 03:23:31,718 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 27 transitions, 86 flow [2021-03-26 03:23:31,718 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:23:31,718 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 27 transitions, 86 flow [2021-03-26 03:23:31,718 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 27 transitions, 86 flow [2021-03-26 03:23:31,719 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 27 transitions, 86 flow [2021-03-26 03:23:31,721 INFO L129 PetriNetUnfolder]: 0/31 cut-off events. [2021-03-26 03:23:31,721 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:23:31,721 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. [2021-03-26 03:23:31,722 INFO L142 LiptonReduction]: Number of co-enabled transitions 440 [2021-03-26 03:23:31,853 INFO L154 LiptonReduction]: Checked pairs total: 890 [2021-03-26 03:23:31,853 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-26 03:23:31,853 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 135 [2021-03-26 03:23:31,860 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-26 03:23:31,860 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:23:31,861 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:23:31,861 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-26 03:23:31,861 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:23:31,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:23:31,862 INFO L82 PathProgramCache]: Analyzing trace with hash 109667652, now seen corresponding path program 1 times [2021-03-26 03:23:31,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:23:31,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747504895] [2021-03-26 03:23:31,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:23:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:23:31,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:23:31,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:23:31,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:23:31,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:23:31,890 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 03:23:31,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 03:23:31,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:23:31,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747504895] [2021-03-26 03:23:31,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:23:31,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 03:23:31,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994766182] [2021-03-26 03:23:31,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 03:23:31,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:23:31,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 03:23:31,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 03:23:31,895 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2021-03-26 03:23:31,896 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) [2021-03-26 03:23:31,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:23:31,896 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2021-03-26 03:23:31,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:23:32,376 INFO L129 PetriNetUnfolder]: 2852/4507 cut-off events. [2021-03-26 03:23:32,376 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:23:32,386 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. [2021-03-26 03:23:32,419 INFO L132 encePairwiseOnDemand]: 17/31 looper letters, 38 selfloop transitions, 18 changer transitions 0/61 dead transitions. [2021-03-26 03:23:32,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 61 transitions, 266 flow [2021-03-26 03:23:32,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 03:23:32,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 03:23:32,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2021-03-26 03:23:32,423 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7032258064516129 [2021-03-26 03:23:32,423 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 109 transitions. [2021-03-26 03:23:32,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 109 transitions. [2021-03-26 03:23:32,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:23:32,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 109 transitions. [2021-03-26 03:23:32,426 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) [2021-03-26 03:23:32,428 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) [2021-03-26 03:23:32,428 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) [2021-03-26 03:23:32,428 INFO L185 Difference]: Start difference. First operand has 32 places, 23 transitions, 78 flow. Second operand 5 states and 109 transitions. [2021-03-26 03:23:32,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 61 transitions, 266 flow [2021-03-26 03:23:32,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 61 transitions, 254 flow, removed 6 selfloop flow, removed 0 redundant places. [2021-03-26 03:23:32,431 INFO L241 Difference]: Finished difference. Result has 40 places, 40 transitions, 222 flow [2021-03-26 03:23:32,431 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} [2021-03-26 03:23:32,431 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 8 predicate places. [2021-03-26 03:23:32,431 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:23:32,431 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 40 transitions, 222 flow [2021-03-26 03:23:32,431 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 40 transitions, 222 flow [2021-03-26 03:23:32,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 40 transitions, 222 flow [2021-03-26 03:23:32,664 INFO L129 PetriNetUnfolder]: 1415/2355 cut-off events. [2021-03-26 03:23:32,665 INFO L130 PetriNetUnfolder]: For 1007/1014 co-relation queries the response was YES. [2021-03-26 03:23:32,671 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. [2021-03-26 03:23:32,696 INFO L142 LiptonReduction]: Number of co-enabled transitions 370 [2021-03-26 03:23:32,708 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:23:32,708 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:23:32,708 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 277 [2021-03-26 03:23:32,710 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 222 flow [2021-03-26 03:23:32,710 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) [2021-03-26 03:23:32,710 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:23:32,710 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-26 03:23:32,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 03:23:32,710 INFO L428 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:23:32,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:23:32,711 INFO L82 PathProgramCache]: Analyzing trace with hash -894759565, now seen corresponding path program 1 times [2021-03-26 03:23:32,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:23:32,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420249255] [2021-03-26 03:23:32,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:23:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:23:32,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:23:32,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:23:32,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:23:32,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:23:32,760 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 03:23:32,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 03:23:32,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-26 03:23:32,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420249255] [2021-03-26 03:23:32,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:23:32,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 03:23:32,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600061326] [2021-03-26 03:23:32,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 03:23:32,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:23:32,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 03:23:32,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 03:23:32,768 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2021-03-26 03:23:32,768 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) [2021-03-26 03:23:32,768 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:23:32,768 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2021-03-26 03:23:32,768 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:23:33,811 INFO L129 PetriNetUnfolder]: 5089/8173 cut-off events. [2021-03-26 03:23:33,835 INFO L130 PetriNetUnfolder]: For 3623/3623 co-relation queries the response was YES. [2021-03-26 03:23:33,861 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. [2021-03-26 03:23:33,945 INFO L132 encePairwiseOnDemand]: 17/31 looper letters, 56 selfloop transitions, 45 changer transitions 0/106 dead transitions. [2021-03-26 03:23:33,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 106 transitions, 789 flow [2021-03-26 03:23:33,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 03:23:33,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 03:23:33,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2021-03-26 03:23:33,950 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6838709677419355 [2021-03-26 03:23:33,952 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 106 transitions. [2021-03-26 03:23:33,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 106 transitions. [2021-03-26 03:23:33,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:23:33,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 106 transitions. [2021-03-26 03:23:33,957 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) [2021-03-26 03:23:33,957 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) [2021-03-26 03:23:33,958 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) [2021-03-26 03:23:33,958 INFO L185 Difference]: Start difference. First operand has 40 places, 40 transitions, 222 flow. Second operand 5 states and 106 transitions. [2021-03-26 03:23:33,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 106 transitions, 789 flow [2021-03-26 03:23:33,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 106 transitions, 789 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-26 03:23:33,981 INFO L241 Difference]: Finished difference. Result has 48 places, 81 transitions, 712 flow [2021-03-26 03:23:33,982 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} [2021-03-26 03:23:33,982 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 16 predicate places. [2021-03-26 03:23:33,982 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:23:33,983 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 81 transitions, 712 flow [2021-03-26 03:23:33,983 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 81 transitions, 712 flow [2021-03-26 03:23:33,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 81 transitions, 712 flow [2021-03-26 03:23:34,644 INFO L129 PetriNetUnfolder]: 3209/5348 cut-off events. [2021-03-26 03:23:34,644 INFO L130 PetriNetUnfolder]: For 9470/9687 co-relation queries the response was YES. [2021-03-26 03:23:34,664 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. [2021-03-26 03:23:34,738 INFO L142 LiptonReduction]: Number of co-enabled transitions 716 [2021-03-26 03:23:34,766 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:23:34,766 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:23:34,766 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 784 [2021-03-26 03:23:34,771 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 81 transitions, 712 flow [2021-03-26 03:23:34,772 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) [2021-03-26 03:23:34,772 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:23:34,772 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-26 03:23:34,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 03:23:34,773 INFO L428 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:23:34,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:23:34,773 INFO L82 PathProgramCache]: Analyzing trace with hash -894746661, now seen corresponding path program 1 times [2021-03-26 03:23:34,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:23:34,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070732473] [2021-03-26 03:23:34,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:23:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:23:34,779 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:23:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:23:34,786 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:23:34,789 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:23:34,789 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:23:34,790 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 03:23:34,790 WARN L342 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:23:34,790 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2021-03-26 03:23:34,797 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:34,797 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:34,797 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:34,797 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:34,798 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:34,798 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:34,799 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:34,799 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:34,799 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:34,799 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:34,799 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:34,799 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:34,800 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:34,800 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:34,800 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:34,800 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:34,801 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:34,801 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:34,801 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:34,801 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:34,802 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:34,803 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:34,804 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:34,804 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:34,805 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:34,806 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:23:34,806 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-03-26 03:23:34,807 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:23:34,807 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:23:34,807 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:23:34,807 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:23:34,807 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:23:34,807 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:23:34,807 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:23:34,807 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:23:34,810 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 33 transitions, 111 flow [2021-03-26 03:23:34,813 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-03-26 03:23:34,813 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:23:34,813 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. [2021-03-26 03:23:34,814 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 33 transitions, 111 flow [2021-03-26 03:23:34,814 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 33 transitions, 111 flow [2021-03-26 03:23:34,814 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:23:34,814 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 33 transitions, 111 flow [2021-03-26 03:23:34,815 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 33 transitions, 111 flow [2021-03-26 03:23:34,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 33 transitions, 111 flow [2021-03-26 03:23:34,818 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-03-26 03:23:34,818 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:23:34,818 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. [2021-03-26 03:23:34,819 INFO L142 LiptonReduction]: Number of co-enabled transitions 700 [2021-03-26 03:23:34,940 INFO L154 LiptonReduction]: Checked pairs total: 1466 [2021-03-26 03:23:34,941 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-26 03:23:34,941 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 127 [2021-03-26 03:23:34,944 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-26 03:23:34,944 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:23:34,944 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:23:34,944 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-26 03:23:34,944 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:23:34,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:23:34,945 INFO L82 PathProgramCache]: Analyzing trace with hash 145120927, now seen corresponding path program 1 times [2021-03-26 03:23:34,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:23:34,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692013999] [2021-03-26 03:23:34,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:23:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:23:34,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:23:34,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:23:34,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:23:34,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:23:34,992 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 03:23:34,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 03:23:34,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:23:34,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692013999] [2021-03-26 03:23:34,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:23:34,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 03:23:34,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627348564] [2021-03-26 03:23:34,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 03:23:34,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:23:34,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 03:23:34,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 03:23:34,998 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2021-03-26 03:23:34,998 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) [2021-03-26 03:23:34,998 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:23:34,998 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2021-03-26 03:23:34,999 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:23:37,928 INFO L129 PetriNetUnfolder]: 22065/31144 cut-off events. [2021-03-26 03:23:37,928 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:23:38,071 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. [2021-03-26 03:23:38,261 INFO L132 encePairwiseOnDemand]: 21/38 looper letters, 48 selfloop transitions, 22 changer transitions 0/76 dead transitions. [2021-03-26 03:23:38,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 76 transitions, 337 flow [2021-03-26 03:23:38,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 03:23:38,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 03:23:38,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2021-03-26 03:23:38,262 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7105263157894737 [2021-03-26 03:23:38,262 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 135 transitions. [2021-03-26 03:23:38,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 135 transitions. [2021-03-26 03:23:38,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:23:38,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 135 transitions. [2021-03-26 03:23:38,263 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) [2021-03-26 03:23:38,264 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) [2021-03-26 03:23:38,264 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) [2021-03-26 03:23:38,264 INFO L185 Difference]: Start difference. First operand has 39 places, 28 transitions, 101 flow. Second operand 5 states and 135 transitions. [2021-03-26 03:23:38,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 76 transitions, 337 flow [2021-03-26 03:23:38,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 76 transitions, 317 flow, removed 10 selfloop flow, removed 0 redundant places. [2021-03-26 03:23:38,267 INFO L241 Difference]: Finished difference. Result has 47 places, 49 transitions, 273 flow [2021-03-26 03:23:38,267 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} [2021-03-26 03:23:38,267 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 8 predicate places. [2021-03-26 03:23:38,267 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:23:38,267 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 49 transitions, 273 flow [2021-03-26 03:23:38,268 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 49 transitions, 273 flow [2021-03-26 03:23:38,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 273 flow [2021-03-26 03:23:39,276 INFO L129 PetriNetUnfolder]: 8596/12613 cut-off events. [2021-03-26 03:23:39,277 INFO L130 PetriNetUnfolder]: For 5746/5779 co-relation queries the response was YES. [2021-03-26 03:23:39,318 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. [2021-03-26 03:23:39,424 INFO L142 LiptonReduction]: Number of co-enabled transitions 578 [2021-03-26 03:23:39,770 INFO L154 LiptonReduction]: Checked pairs total: 106 [2021-03-26 03:23:39,770 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:23:39,770 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1503 [2021-03-26 03:23:39,771 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 273 flow [2021-03-26 03:23:39,771 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) [2021-03-26 03:23:39,771 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:23:39,771 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-26 03:23:39,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 03:23:39,772 INFO L428 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:23:39,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:23:39,772 INFO L82 PathProgramCache]: Analyzing trace with hash 204589902, now seen corresponding path program 1 times [2021-03-26 03:23:39,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:23:39,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429575787] [2021-03-26 03:23:39,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:23:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:23:39,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:23:39,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:23:39,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:23:39,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:23:39,795 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 03:23:39,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 03:23:39,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-26 03:23:39,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429575787] [2021-03-26 03:23:39,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:23:39,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 03:23:39,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646258001] [2021-03-26 03:23:39,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 03:23:39,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:23:39,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 03:23:39,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 03:23:39,800 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2021-03-26 03:23:39,800 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) [2021-03-26 03:23:39,800 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:23:39,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2021-03-26 03:23:39,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:23:45,441 INFO L129 PetriNetUnfolder]: 41526/59126 cut-off events. [2021-03-26 03:23:45,441 INFO L130 PetriNetUnfolder]: For 24287/24287 co-relation queries the response was YES. [2021-03-26 03:23:45,686 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. [2021-03-26 03:23:46,136 INFO L132 encePairwiseOnDemand]: 21/38 looper letters, 70 selfloop transitions, 56 changer transitions 0/132 dead transitions. [2021-03-26 03:23:46,136 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 132 transitions, 980 flow [2021-03-26 03:23:46,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 03:23:46,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 03:23:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2021-03-26 03:23:46,138 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6894736842105263 [2021-03-26 03:23:46,138 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 131 transitions. [2021-03-26 03:23:46,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 131 transitions. [2021-03-26 03:23:46,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:23:46,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 131 transitions. [2021-03-26 03:23:46,139 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) [2021-03-26 03:23:46,141 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) [2021-03-26 03:23:46,141 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) [2021-03-26 03:23:46,141 INFO L185 Difference]: Start difference. First operand has 47 places, 49 transitions, 273 flow. Second operand 5 states and 131 transitions. [2021-03-26 03:23:46,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 132 transitions, 980 flow [2021-03-26 03:23:46,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 132 transitions, 980 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-26 03:23:46,442 INFO L241 Difference]: Finished difference. Result has 55 places, 100 transitions, 883 flow [2021-03-26 03:23:46,442 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} [2021-03-26 03:23:46,443 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 16 predicate places. [2021-03-26 03:23:46,443 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:23:46,443 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 100 transitions, 883 flow [2021-03-26 03:23:46,443 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 100 transitions, 883 flow [2021-03-26 03:23:46,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 100 transitions, 883 flow [2021-03-26 03:23:49,026 INFO L129 PetriNetUnfolder]: 20477/30074 cut-off events. [2021-03-26 03:23:49,026 INFO L130 PetriNetUnfolder]: For 53206/53491 co-relation queries the response was YES. [2021-03-26 03:23:49,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135836 conditions, 30074 events. 20477/30074 cut-off events. For 53206/53491 co-relation queries the response was YES. Maximal size of possible extension queue 2090. Compared 221921 event pairs, 6345 based on Foata normal form. 32/29638 useless extension candidates. Maximal degree in co-relation 135808. Up to 14462 conditions per place. [2021-03-26 03:23:49,451 INFO L142 LiptonReduction]: Number of co-enabled transitions 1160 [2021-03-26 03:23:49,542 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:23:49,542 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:23:49,542 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3099 [2021-03-26 03:23:49,543 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 100 transitions, 883 flow [2021-03-26 03:23:49,543 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) [2021-03-26 03:23:49,543 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:23:49,543 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:23:49,543 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-26 03:23:49,543 INFO L428 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:23:49,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:23:49,544 INFO L82 PathProgramCache]: Analyzing trace with hash 2048027829, now seen corresponding path program 1 times [2021-03-26 03:23:49,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:23:49,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98511549] [2021-03-26 03:23:49,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:23:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:23:49,547 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:23:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:23:49,549 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:23:49,550 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:23:49,550 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:23:49,550 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-26 03:23:49,550 WARN L342 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:23:49,551 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2021-03-26 03:23:49,556 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,557 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,557 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,557 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,557 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,557 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,557 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,557 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,558 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,558 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,558 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,558 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,558 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,558 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,558 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,558 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,559 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,559 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,559 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,559 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,559 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,559 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,559 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,559 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,560 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,561 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,561 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,562 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,563 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,563 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:23:49,564 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:23:49,564 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-03-26 03:23:49,565 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:23:49,565 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:23:49,565 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:23:49,565 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:23:49,565 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:23:49,565 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:23:49,565 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:23:49,565 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:23:49,566 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 39 transitions, 138 flow [2021-03-26 03:23:49,569 INFO L129 PetriNetUnfolder]: 0/45 cut-off events. [2021-03-26 03:23:49,569 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:23:49,569 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. [2021-03-26 03:23:49,569 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 39 transitions, 138 flow [2021-03-26 03:23:49,569 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 138 flow [2021-03-26 03:23:49,569 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:23:49,570 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 39 transitions, 138 flow [2021-03-26 03:23:49,570 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 39 transitions, 138 flow [2021-03-26 03:23:49,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 39 transitions, 138 flow [2021-03-26 03:23:49,573 INFO L129 PetriNetUnfolder]: 0/45 cut-off events. [2021-03-26 03:23:49,573 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:23:49,573 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. [2021-03-26 03:23:49,573 INFO L142 LiptonReduction]: Number of co-enabled transitions 1020 [2021-03-26 03:23:49,714 INFO L154 LiptonReduction]: Checked pairs total: 2120 [2021-03-26 03:23:49,714 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-26 03:23:49,714 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 145 [2021-03-26 03:23:49,716 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-26 03:23:49,716 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:23:49,716 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:23:49,717 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-26 03:23:49,717 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:23:49,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:23:49,717 INFO L82 PathProgramCache]: Analyzing trace with hash 187284127, now seen corresponding path program 1 times [2021-03-26 03:23:49,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:23:49,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598309084] [2021-03-26 03:23:49,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:23:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:23:49,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:23:49,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:23:49,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:23:49,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:23:49,758 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 03:23:49,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 03:23:49,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:23:49,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598309084] [2021-03-26 03:23:49,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:23:49,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 03:23:49,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917644491] [2021-03-26 03:23:49,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 03:23:49,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:23:49,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 03:23:49,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 03:23:49,763 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2021-03-26 03:23:49,764 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) [2021-03-26 03:23:49,764 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:23:49,764 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2021-03-26 03:23:49,764 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:24:14,347 INFO L129 PetriNetUnfolder]: 151182/199409 cut-off events. [2021-03-26 03:24:14,347 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:24:15,357 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. [2021-03-26 03:24:16,607 INFO L132 encePairwiseOnDemand]: 25/45 looper letters, 58 selfloop transitions, 26 changer transitions 0/91 dead transitions. [2021-03-26 03:24:16,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 91 transitions, 410 flow [2021-03-26 03:24:16,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 03:24:16,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 03:24:16,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2021-03-26 03:24:16,609 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7155555555555555 [2021-03-26 03:24:16,609 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 161 transitions. [2021-03-26 03:24:16,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 161 transitions. [2021-03-26 03:24:16,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:24:16,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 161 transitions. [2021-03-26 03:24:16,610 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) [2021-03-26 03:24:16,610 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) [2021-03-26 03:24:16,610 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) [2021-03-26 03:24:16,610 INFO L185 Difference]: Start difference. First operand has 46 places, 33 transitions, 126 flow. Second operand 5 states and 161 transitions. [2021-03-26 03:24:16,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 91 transitions, 410 flow [2021-03-26 03:24:16,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 91 transitions, 380 flow, removed 15 selfloop flow, removed 0 redundant places. [2021-03-26 03:24:16,613 INFO L241 Difference]: Finished difference. Result has 54 places, 58 transitions, 324 flow [2021-03-26 03:24:16,613 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} [2021-03-26 03:24:16,613 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 8 predicate places. [2021-03-26 03:24:16,613 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:24:16,613 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 58 transitions, 324 flow [2021-03-26 03:24:16,613 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 58 transitions, 324 flow [2021-03-26 03:24:16,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 58 transitions, 324 flow [2021-03-26 03:24:21,469 INFO L129 PetriNetUnfolder]: 46366/63124 cut-off events. [2021-03-26 03:24:21,469 INFO L130 PetriNetUnfolder]: For 29157/29817 co-relation queries the response was YES. [2021-03-26 03:24:21,763 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. [2021-03-26 03:24:22,378 INFO L142 LiptonReduction]: Number of co-enabled transitions 832 [2021-03-26 03:24:40,545 INFO L154 LiptonReduction]: Checked pairs total: 44 [2021-03-26 03:24:40,545 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:24:40,545 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 23932 [2021-03-26 03:24:40,546 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 58 transitions, 324 flow [2021-03-26 03:24:40,546 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) [2021-03-26 03:24:40,546 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:24:40,546 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-26 03:24:40,546 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-26 03:24:40,547 INFO L428 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:24:40,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:24:40,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1511038456, now seen corresponding path program 1 times [2021-03-26 03:24:40,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:24:40,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291804975] [2021-03-26 03:24:40,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:24:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:24:40,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:24:40,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:24:40,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:24:40,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:24:40,569 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 03:24:40,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 03:24:40,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-26 03:24:40,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291804975] [2021-03-26 03:24:40,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:24:40,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 03:24:40,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66052252] [2021-03-26 03:24:40,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 03:24:40,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:24:40,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 03:24:40,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 03:24:40,575 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2021-03-26 03:24:40,575 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) [2021-03-26 03:24:40,575 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:24:40,575 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2021-03-26 03:24:40,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:14,926 INFO L129 PetriNetUnfolder]: 290971/385945 cut-off events. [2021-03-26 03:26:14,926 INFO L130 PetriNetUnfolder]: For 168541/168541 co-relation queries the response was YES. [2021-03-26 03:26:16,844 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. [2021-03-26 03:26:19,238 INFO L132 encePairwiseOnDemand]: 25/45 looper letters, 84 selfloop transitions, 67 changer transitions 0/158 dead transitions. [2021-03-26 03:26:19,239 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 158 transitions, 1171 flow [2021-03-26 03:26:19,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 03:26:19,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 03:26:19,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2021-03-26 03:26:19,240 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6933333333333334 [2021-03-26 03:26:19,240 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 156 transitions. [2021-03-26 03:26:19,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 156 transitions. [2021-03-26 03:26:19,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:19,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 156 transitions. [2021-03-26 03:26:19,240 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) [2021-03-26 03:26:19,241 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) [2021-03-26 03:26:19,241 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) [2021-03-26 03:26:19,241 INFO L185 Difference]: Start difference. First operand has 54 places, 58 transitions, 324 flow. Second operand 5 states and 156 transitions. [2021-03-26 03:26:19,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 158 transitions, 1171 flow [2021-03-26 03:26:21,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 158 transitions, 1171 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:21,758 INFO L241 Difference]: Finished difference. Result has 62 places, 119 transitions, 1054 flow [2021-03-26 03:26:21,758 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} [2021-03-26 03:26:21,758 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2021-03-26 03:26:21,758 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:21,758 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 119 transitions, 1054 flow [2021-03-26 03:26:21,759 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 119 transitions, 1054 flow [2021-03-26 03:26:21,759 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 119 transitions, 1054 flow [2021-03-26 03:26:43,095 INFO L129 PetriNetUnfolder]: 111368/152103 cut-off events. [2021-03-26 03:26:43,095 INFO L130 PetriNetUnfolder]: For 273710/280056 co-relation queries the response was YES. [2021-03-26 03:26:43,998 INFO L84 FinitePrefix]: Finished finitePrefix Result has 688571 conditions, 152103 events. 111368/152103 cut-off events. For 273710/280056 co-relation queries the response was YES. Maximal size of possible extension queue 8282. Compared 1140664 event pairs, 38982 based on Foata normal form. 413/149652 useless extension candidates. Maximal degree in co-relation 688542. Up to 73780 conditions per place. [2021-03-26 03:26:46,309 INFO L142 LiptonReduction]: Number of co-enabled transitions 1710 [2021-03-26 03:26:52,914 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:52,915 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:52,915 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 31157 [2021-03-26 03:26:52,915 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 119 transitions, 1054 flow [2021-03-26 03:26:52,916 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) [2021-03-26 03:26:52,916 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:52,916 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:52,916 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-26 03:26:52,916 INFO L428 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:52,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:52,916 INFO L82 PathProgramCache]: Analyzing trace with hash -401922614, now seen corresponding path program 1 times [2021-03-26 03:26:52,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:52,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212853608] [2021-03-26 03:26:52,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:52,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:52,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:26:52,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:52,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:26:52,959 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 03:26:52,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 03:26:52,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-03-26 03:26:52,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212853608] [2021-03-26 03:26:52,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:52,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 03:26:52,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023672734] [2021-03-26 03:26:52,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 03:26:52,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:52,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 03:26:52,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 03:26:52,964 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2021-03-26 03:26:52,965 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) [2021-03-26 03:26:52,965 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:52,965 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2021-03-26 03:26:52,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:53,115 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2021-03-26 03:32:25,524 INFO L129 PetriNetUnfolder]: 534473/712039 cut-off events. [2021-03-26 03:32:25,524 INFO L130 PetriNetUnfolder]: For 1149742/1149744 co-relation queries the response was YES. [2021-03-26 03:32:29,680 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3505864 conditions, 712039 events. 534473/712039 cut-off events. For 1149742/1149744 co-relation queries the response was YES. Maximal size of possible extension queue 31072. Compared 5613844 event pairs, 128164 based on Foata normal form. 20284/732260 useless extension candidates. Maximal degree in co-relation 3505833. Up to 279467 conditions per place. [2021-03-26 03:32:34,054 INFO L132 encePairwiseOnDemand]: 25/45 looper letters, 114 selfloop transitions, 152 changer transitions 0/273 dead transitions. [2021-03-26 03:32:34,054 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 273 transitions, 2951 flow [2021-03-26 03:32:34,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 03:32:34,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 03:32:34,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2021-03-26 03:32:34,055 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6933333333333334 [2021-03-26 03:32:34,055 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 156 transitions. [2021-03-26 03:32:34,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 156 transitions. [2021-03-26 03:32:34,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:32:34,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 156 transitions. [2021-03-26 03:32:34,056 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) [2021-03-26 03:32:34,056 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) [2021-03-26 03:32:34,056 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) [2021-03-26 03:32:34,057 INFO L185 Difference]: Start difference. First operand has 62 places, 119 transitions, 1054 flow. Second operand 5 states and 156 transitions. [2021-03-26 03:32:34,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 273 transitions, 2951 flow [2021-03-26 03:32:44,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 273 transitions, 2951 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-26 03:32:44,074 INFO L241 Difference]: Finished difference. Result has 69 places, 228 transitions, 2731 flow [2021-03-26 03:32:44,074 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} [2021-03-26 03:32:44,074 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2021-03-26 03:32:44,074 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:32:44,074 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 228 transitions, 2731 flow [2021-03-26 03:32:44,074 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 228 transitions, 2731 flow [2021-03-26 03:32:44,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 228 transitions, 2731 flow [2021-03-26 03:33:54,583 INFO L129 PetriNetUnfolder]: 258364/351809 cut-off events. [2021-03-26 03:33:54,583 INFO L130 PetriNetUnfolder]: For 1223288/1237181 co-relation queries the response was YES. [2021-03-26 03:33:57,099 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1974344 conditions, 351809 events. 258364/351809 cut-off events. For 1223288/1237181 co-relation queries the response was YES. Maximal size of possible extension queue 19788. Compared 2849386 event pairs, 66179 based on Foata normal form. 2764/342970 useless extension candidates. Maximal degree in co-relation 1974310. Up to 163417 conditions per place. [2021-03-26 03:34:02,132 INFO L142 LiptonReduction]: Number of co-enabled transitions 3012 [2021-03-26 03:34:10,950 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:34:10,950 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:34:10,950 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 86876 [2021-03-26 03:34:10,951 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 228 transitions, 2731 flow [2021-03-26 03:34:10,951 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) [2021-03-26 03:34:10,951 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:34:10,951 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:34:10,951 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-26 03:34:10,951 INFO L428 AbstractCegarLoop]: === Iteration 4 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:34:10,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:34:10,952 INFO L82 PathProgramCache]: Analyzing trace with hash 219245625, now seen corresponding path program 1 times [2021-03-26 03:34:10,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:34:10,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430140584] [2021-03-26 03:34:10,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:34:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:34:10,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:34:10,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:34:10,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:34:10,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:34:10,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:34:10,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:34:10,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:34:10,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:34:10,982 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 03:34:10,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 03:34:10,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-26 03:34:10,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430140584] [2021-03-26 03:34:10,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:34:10,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:34:10,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249432294] [2021-03-26 03:34:10,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 03:34:10,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:34:10,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 03:34:10,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-26 03:34:10,986 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2021-03-26 03:34:10,986 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) [2021-03-26 03:34:10,986 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:34:10,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2021-03-26 03:34:10,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2021-03-26 03:36:02,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 03:36:02,603 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-26 03:36:02,603 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-26 03:36:02,606 WARN L224 ceAbstractionStarter]: Timeout [2021-03-26 03:36:02,606 INFO L202 PluginConnector]: Adding new model fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 03:36:02 BasicIcfg [2021-03-26 03:36:02,606 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 03:36:02,607 INFO L168 Benchmark]: Toolchain (without parser) took 752233.48 ms. Allocated memory was 255.9 MB in the beginning and 15.1 GB in the end (delta: 14.8 GB). Free memory was 236.6 MB in the beginning and 10.6 GB in the end (delta: -10.4 GB). Peak memory consumption was 7.8 GB. Max. memory is 16.0 GB. [2021-03-26 03:36:02,607 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.46 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 03:36:02,607 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.13 ms. Allocated memory is still 255.9 MB. Free memory was 236.6 MB in the beginning and 235.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 03:36:02,608 INFO L168 Benchmark]: Boogie Preprocessor took 13.65 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.2 MB in the end (delta: 867.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 03:36:02,608 INFO L168 Benchmark]: RCFGBuilder took 203.07 ms. Allocated memory is still 255.9 MB. Free memory was 234.0 MB in the beginning and 240.4 MB in the end (delta: -6.3 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.0 GB. [2021-03-26 03:36:02,609 INFO L168 Benchmark]: TraceAbstraction took 751989.37 ms. Allocated memory was 255.9 MB in the beginning and 15.1 GB in the end (delta: 14.8 GB). Free memory was 240.4 MB in the beginning and 10.6 GB in the end (delta: -10.4 GB). Peak memory consumption was 7.8 GB. Max. memory is 16.0 GB. [2021-03-26 03:36:02,611 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 0.46 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 21.13 ms. Allocated memory is still 255.9 MB. Free memory was 236.6 MB in the beginning and 235.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.65 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.2 MB in the end (delta: 867.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 203.07 ms. Allocated memory is still 255.9 MB. Free memory was 234.0 MB in the beginning and 240.4 MB in the end (delta: -6.3 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 751989.37 ms. Allocated memory was 255.9 MB in the beginning and 15.1 GB in the end (delta: 14.8 GB). Free memory was 240.4 MB in the beginning and 10.6 GB in the end (delta: -10.4 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: 138.5ms, 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: 8, 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: 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: 2, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 6, unknown conditional: 6, unknown unconditional: 0] , 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: 137.2ms, 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: 56, positive unconditional: 0, negative: 22, negative conditional: 22, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 56, positive: 43, positive conditional: 0, positive unconditional: 43, 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: 56, positive: 43, positive conditional: 0, positive unconditional: 43, 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: 56, positive: 43, positive conditional: 0, positive unconditional: 43, 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: 80, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 80, negative conditional: 0, negative unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 78, positive: 13, positive conditional: 13, positive unconditional: 0, negative: 9, negative conditional: 9, negative unconditional: 0, unknown: 56, unknown conditional: 56, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 31, Positive cache size: 21, Positive conditional cache size: 21, Positive unconditional cache size: 0, Negative cache size: 10, Negative conditional cache size: 10, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 102.6ms, 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: 84, positive unconditional: 0, negative: 37, negative conditional: 37, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 88, positive: 70, positive conditional: 0, positive unconditional: 70, 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: 88, positive: 70, positive conditional: 0, positive unconditional: 70, 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: 88, positive: 70, positive conditional: 0, positive unconditional: 70, 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: 62, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 62, negative conditional: 0, negative unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 121, positive: 14, positive conditional: 14, positive unconditional: 0, negative: 19, negative conditional: 19, negative unconditional: 0, unknown: 88, unknown conditional: 88, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 29, Positive cache size: 16, Positive conditional cache size: 16, Positive unconditional cache size: 0, Negative cache size: 13, Negative conditional cache size: 13, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 45.1ms, 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): 29, Positive cache size: 16, Positive conditional cache size: 16, Positive unconditional cache size: 0, Negative cache size: 13, Negative conditional cache size: 13, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 134.6ms, 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: 222, positive unconditional: 0, negative: 48, negative conditional: 48, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 205, positive: 173, positive conditional: 0, positive unconditional: 173, 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: 205, positive: 173, positive conditional: 0, positive unconditional: 173, 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: 205, positive: 173, positive conditional: 0, positive unconditional: 173, 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: 94, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 94, negative conditional: 0, negative unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 270, positive: 49, positive conditional: 49, positive unconditional: 0, negative: 16, negative conditional: 16, negative unconditional: 0, unknown: 205, unknown conditional: 205, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 57, Positive conditional cache size: 57, Positive unconditional cache size: 0, Negative cache size: 21, Negative conditional cache size: 21, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 276.5ms, 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): 78, Positive cache size: 57, Positive conditional cache size: 57, Positive unconditional cache size: 0, Negative cache size: 21, Negative conditional cache size: 21, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 783.4ms, 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): 78, Positive cache size: 57, Positive conditional cache size: 57, Positive unconditional cache size: 0, Negative cache size: 21, Negative conditional cache size: 21, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 126.1ms, 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: 259, positive unconditional: 0, negative: 61, negative conditional: 61, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 260, positive: 221, positive conditional: 0, positive unconditional: 221, 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: 260, positive: 221, positive conditional: 0, positive unconditional: 221, 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: 260, positive: 221, positive conditional: 0, positive unconditional: 221, 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: 76, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 76, negative conditional: 0, negative unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 320, positive: 38, positive conditional: 38, positive unconditional: 0, negative: 22, negative conditional: 22, negative unconditional: 0, unknown: 260, unknown conditional: 260, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 87, Positive cache size: 56, Positive conditional cache size: 56, Positive unconditional cache size: 0, Negative cache size: 31, Negative conditional cache size: 31, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1502.5ms, 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: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ 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] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 18, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 18, negative conditional: 5, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 89, Positive cache size: 56, Positive conditional cache size: 56, Positive unconditional cache size: 0, Negative cache size: 33, Negative conditional cache size: 33, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3098.7ms, 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): 89, Positive cache size: 56, Positive conditional cache size: 56, Positive unconditional cache size: 0, Negative cache size: 33, Negative conditional cache size: 33, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 143.9ms, 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: 419, positive unconditional: 0, negative: 72, negative conditional: 72, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 396, positive: 345, positive conditional: 0, positive unconditional: 345, 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: 396, positive: 345, positive conditional: 0, positive unconditional: 345, 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: 396, positive: 345, positive conditional: 0, positive unconditional: 345, 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: 96, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 96, negative conditional: 0, negative unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 491, positive: 74, positive conditional: 74, positive unconditional: 0, negative: 21, negative conditional: 21, negative unconditional: 0, unknown: 396, unknown conditional: 396, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 163, Positive cache size: 121, Positive conditional cache size: 121, Positive unconditional cache size: 0, Negative cache size: 42, Negative conditional cache size: 42, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 23931.8ms, 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: 2, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 1, positive unconditional: 1, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 1, positive unconditional: 1, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.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] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 3, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 166, Positive cache size: 123, Positive conditional cache size: 123, Positive unconditional cache size: 0, Negative cache size: 43, Negative conditional cache size: 43, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 31155.9ms, 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: 123, Positive unconditional cache size: 0, Negative cache size: 43, Negative conditional cache size: 43, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 86875.8ms, 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: 123, Positive unconditional cache size: 0, Negative cache size: 43, Negative conditional cache size: 43, Negative unconditional cache size: 0 - 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 2272441 conditions, 412633 events (319795/412632 cut-off events. For 1254037/1254037 co-relation queries the response was YES. Maximal size of possible extension queue 40772. Compared 3180743 event pairs, 79882 based on Foata normal form. 5970/459057 useless extension candidates. Maximal degree in co-relation 2272369. Up to 149970 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 9 locations, 1 error locations. Started 6 CEGAR loops. EmptinessCheckTime: 15.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 751813.1ms, OverallIterations: 14, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 602620.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 885.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 285 SDtfs, 354 SDslu, 192 SDs, 0 SdLazy, 580 SolverSat, 114 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 579.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 9 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 337.5ms 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: 9.2ms SsaConstructionTime, 49.8ms SatisfiabilityAnalysisTime, 346.1ms 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 [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process !SESSION 2021-03-26 03:23:28.454 ----------------------------------------------- eclipse.buildId=unknown java.version=11.0.9.1 java.vendor=Debian BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/fork_loop_local.bpl Command-line arguments: -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/fork_loop_local.bpl !ENTRY org.eclipse.osgi 4 0 2021-03-26 03:36:02.970 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2868cc740/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:191) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2868cc740/.metadata/.log.