/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/pthread_inc.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 07:43:46,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 07:43:46,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 07:43:46,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 07:43:46,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 07:43:46,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 07:43:46,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 07:43:46,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 07:43:46,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 07:43:46,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 07:43:46,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 07:43:46,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 07:43:46,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 07:43:46,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 07:43:46,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 07:43:46,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 07:43:46,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 07:43:46,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 07:43:46,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 07:43:46,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 07:43:46,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 07:43:46,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 07:43:46,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 07:43:46,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 07:43:46,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 07:43:46,198 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 07:43:46,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 07:43:46,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 07:43:46,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 07:43:46,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 07:43:46,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 07:43:46,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 07:43:46,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 07:43:46,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 07:43:46,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 07:43:46,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 07:43:46,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 07:43:46,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 07:43:46,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 07:43:46,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 07:43:46,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 07:43:46,207 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-RepeatedVariableLbe.epf [2021-03-25 07:43:46,240 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 07:43:46,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 07:43:46,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 07:43:46,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 07:43:46,244 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 07:43:46,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 07:43:46,244 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 07:43:46,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 07:43:46,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 07:43:46,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 07:43:46,245 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 07:43:46,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 07:43:46,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 07:43:46,245 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 07:43:46,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 07:43:46,246 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 07:43:46,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 07:43:46,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 07:43:46,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 07:43:46,246 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 07:43:46,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 07:43:46,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 07:43:46,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 07:43:46,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 07:43:46,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 07:43:46,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 07:43:46,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 07:43:46,247 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 07:43:46,247 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 07:43:46,248 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 07:43:46,248 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 07:43:46,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 07:43:46,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 07:43:46,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 07:43:46,538 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 07:43:46,539 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 07:43:46,539 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/pthread_inc.bpl [2021-03-25 07:43:46,540 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/pthread_inc.bpl' [2021-03-25 07:43:46,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 07:43:46,570 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 07:43:46,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 07:43:46,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 07:43:46,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 07:43:46,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pthread_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:43:46" (1/1) ... [2021-03-25 07:43:46,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pthread_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:43:46" (1/1) ... [2021-03-25 07:43:46,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 07:43:46,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 07:43:46,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 07:43:46,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 07:43:46,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pthread_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:43:46" (1/1) ... [2021-03-25 07:43:46,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pthread_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:43:46" (1/1) ... [2021-03-25 07:43:46,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pthread_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:43:46" (1/1) ... [2021-03-25 07:43:46,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pthread_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:43:46" (1/1) ... [2021-03-25 07:43:46,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pthread_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:43:46" (1/1) ... [2021-03-25 07:43:46,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pthread_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:43:46" (1/1) ... [2021-03-25 07:43:46,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pthread_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:43:46" (1/1) ... [2021-03-25 07:43:46,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 07:43:46,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 07:43:46,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 07:43:46,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 07:43:46,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pthread_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:43:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 07:43:46,657 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 07:43:46,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 07:43:46,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 07:43:46,657 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread given in one single declaration [2021-03-25 07:43:46,658 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-03-25 07:43:46,658 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-03-25 07:43:46,660 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 07:43:46,822 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 07:43:46,822 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-03-25 07:43:46,830 INFO L202 PluginConnector]: Adding new model pthread_inc.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:43:46 BoogieIcfgContainer [2021-03-25 07:43:46,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 07:43:46,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 07:43:46,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 07:43:46,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 07:43:46,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pthread_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:43:46" (1/2) ... [2021-03-25 07:43:46,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c081df and model type pthread_inc.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 07:43:46, skipping insertion in model container [2021-03-25 07:43:46,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pthread_inc.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:43:46" (2/2) ... [2021-03-25 07:43:46,840 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread_inc.bpl [2021-03-25 07:43:46,845 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 07:43:46,848 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 07:43:46,849 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 07:43:46,868 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:46,869 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:46,869 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:46,870 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:46,872 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:46,874 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:46,875 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:46,875 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:46,884 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:46,889 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 07:43:46,905 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 07:43:46,931 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 07:43:46,931 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 07:43:46,931 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 07:43:46,932 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 07:43:46,932 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 07:43:46,932 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 07:43:46,932 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 07:43:46,932 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 07:43:46,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 14 places, 11 transitions, 27 flow [2021-03-25 07:43:46,957 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-25 07:43:46,958 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:43:46,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17 conditions, 12 events. 0/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 5 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 07:43:46,959 INFO L82 GeneralOperation]: Start removeDead. Operand has 14 places, 11 transitions, 27 flow [2021-03-25 07:43:46,962 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 14 places, 11 transitions, 27 flow [2021-03-25 07:43:46,963 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:43:46,976 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 14 places, 11 transitions, 27 flow [2021-03-25 07:43:46,979 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 14 places, 11 transitions, 27 flow [2021-03-25 07:43:46,980 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 14 places, 11 transitions, 27 flow [2021-03-25 07:43:46,989 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-25 07:43:46,989 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:43:46,989 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17 conditions, 12 events. 0/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 9 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 07:43:46,991 INFO L142 LiptonReduction]: Number of co-enabled transitions 28 [2021-03-25 07:43:47,239 INFO L154 LiptonReduction]: Checked pairs total: 12 [2021-03-25 07:43:47,239 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-25 07:43:47,241 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 279 [2021-03-25 07:43:47,247 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-25 07:43:47,247 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:43:47,247 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:43:47,248 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2021-03-25 07:43:47,248 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 07:43:47,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:43:47,252 INFO L82 PathProgramCache]: Analyzing trace with hash 50162, now seen corresponding path program 1 times [2021-03-25 07:43:47,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:43:47,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890583238] [2021-03-25 07:43:47,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:43:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 07:43:47,305 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 07:43:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 07:43:47,307 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 07:43:47,317 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 07:43:47,318 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 07:43:47,318 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 07:43:47,318 WARN L342 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-25 07:43:47,319 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-03-25 07:43:47,322 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,323 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,323 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,323 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,323 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,323 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,324 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,324 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,324 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,324 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,325 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,325 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,325 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,325 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,325 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,326 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,326 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,327 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,328 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 07:43:47,328 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 07:43:47,329 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 07:43:47,329 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 07:43:47,330 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 07:43:47,330 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 07:43:47,330 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 07:43:47,330 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 07:43:47,330 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 07:43:47,330 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 07:43:47,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 19 transitions, 50 flow [2021-03-25 07:43:47,335 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-25 07:43:47,335 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:43:47,336 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 21 events. 0/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 07:43:47,336 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 19 transitions, 50 flow [2021-03-25 07:43:47,336 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 19 transitions, 50 flow [2021-03-25 07:43:47,336 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:43:47,337 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 19 transitions, 50 flow [2021-03-25 07:43:47,337 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 19 transitions, 50 flow [2021-03-25 07:43:47,337 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 19 transitions, 50 flow [2021-03-25 07:43:47,342 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-25 07:43:47,342 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:43:47,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 21 events. 0/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 39 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 07:43:47,342 INFO L142 LiptonReduction]: Number of co-enabled transitions 168 [2021-03-25 07:43:47,361 INFO L154 LiptonReduction]: Checked pairs total: 360 [2021-03-25 07:43:47,362 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 07:43:47,362 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 26 [2021-03-25 07:43:47,364 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-25 07:43:47,364 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:43:47,365 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:43:47,365 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-03-25 07:43:47,365 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:43:47,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:43:47,365 INFO L82 PathProgramCache]: Analyzing trace with hash 2331670, now seen corresponding path program 1 times [2021-03-25 07:43:47,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:43:47,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521376637] [2021-03-25 07:43:47,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:43:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 07:43:47,369 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 07:43:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 07:43:47,371 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 07:43:47,372 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 07:43:47,372 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 07:43:47,373 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 07:43:47,373 WARN L342 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-25 07:43:47,374 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-03-25 07:43:47,378 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,378 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,379 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,379 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,379 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,379 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,379 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,380 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,380 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,380 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,380 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,381 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,381 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,381 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,381 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,381 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,382 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,382 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,382 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,382 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,383 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,383 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,383 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,383 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,384 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,385 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,385 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,386 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 07:43:47,386 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-25 07:43:47,388 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 07:43:47,388 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 07:43:47,388 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 07:43:47,388 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 07:43:47,388 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 07:43:47,388 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 07:43:47,388 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 07:43:47,388 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 07:43:47,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 27 transitions, 75 flow [2021-03-25 07:43:47,395 INFO L129 PetriNetUnfolder]: 0/30 cut-off events. [2021-03-25 07:43:47,395 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:43:47,395 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 65 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-25 07:43:47,395 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 27 transitions, 75 flow [2021-03-25 07:43:47,396 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 27 transitions, 75 flow [2021-03-25 07:43:47,396 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:43:47,396 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 27 transitions, 75 flow [2021-03-25 07:43:47,397 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 27 transitions, 75 flow [2021-03-25 07:43:47,397 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 27 transitions, 75 flow [2021-03-25 07:43:47,402 INFO L129 PetriNetUnfolder]: 0/30 cut-off events. [2021-03-25 07:43:47,402 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:43:47,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 78 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-25 07:43:47,403 INFO L142 LiptonReduction]: Number of co-enabled transitions 420 [2021-03-25 07:43:47,435 INFO L154 LiptonReduction]: Checked pairs total: 1030 [2021-03-25 07:43:47,436 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 07:43:47,436 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 40 [2021-03-25 07:43:47,439 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-25 07:43:47,439 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:43:47,439 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:43:47,440 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-25 07:43:47,440 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:43:47,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:43:47,440 INFO L82 PathProgramCache]: Analyzing trace with hash 100172263, now seen corresponding path program 1 times [2021-03-25 07:43:47,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:43:47,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874971043] [2021-03-25 07:43:47,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:43:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 07:43:47,445 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 07:43:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 07:43:47,448 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 07:43:47,452 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 07:43:47,452 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 07:43:47,453 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 07:43:47,453 WARN L342 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-25 07:43:47,453 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-03-25 07:43:47,459 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,459 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,459 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,460 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,460 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,460 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,460 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,460 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,461 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,461 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,463 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,463 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,463 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,463 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,463 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,463 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,464 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,464 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,464 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,464 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,465 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,465 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,465 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,465 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,465 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,466 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,466 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,466 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,466 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,466 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,466 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,467 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,467 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,469 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,470 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,472 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,473 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 07:43:47,473 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-25 07:43:47,475 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 07:43:47,475 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 07:43:47,475 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 07:43:47,476 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 07:43:47,476 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 07:43:47,476 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 07:43:47,476 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 07:43:47,476 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 07:43:47,483 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 35 transitions, 102 flow [2021-03-25 07:43:47,492 INFO L129 PetriNetUnfolder]: 0/39 cut-off events. [2021-03-25 07:43:47,493 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:43:47,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 39 events. 0/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 105 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-25 07:43:47,493 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 35 transitions, 102 flow [2021-03-25 07:43:47,494 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 35 transitions, 102 flow [2021-03-25 07:43:47,494 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:43:47,494 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 35 transitions, 102 flow [2021-03-25 07:43:47,494 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 35 transitions, 102 flow [2021-03-25 07:43:47,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 35 transitions, 102 flow [2021-03-25 07:43:47,508 INFO L129 PetriNetUnfolder]: 0/39 cut-off events. [2021-03-25 07:43:47,508 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:43:47,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 39 events. 0/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 105 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-25 07:43:47,510 INFO L142 LiptonReduction]: Number of co-enabled transitions 784 [2021-03-25 07:43:47,549 INFO L154 LiptonReduction]: Checked pairs total: 1938 [2021-03-25 07:43:47,550 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 07:43:47,550 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 56 [2021-03-25 07:43:47,554 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-25 07:43:47,554 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:43:47,554 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:43:47,554 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-25 07:43:47,555 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:43:47,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:43:47,555 INFO L82 PathProgramCache]: Analyzing trace with hash -58775453, now seen corresponding path program 1 times [2021-03-25 07:43:47,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:43:47,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036827301] [2021-03-25 07:43:47,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:43:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 07:43:47,560 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 07:43:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 07:43:47,563 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 07:43:47,564 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 07:43:47,564 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 07:43:47,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 07:43:47,565 WARN L342 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-25 07:43:47,565 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2021-03-25 07:43:47,570 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,570 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,570 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,570 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,571 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,571 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,571 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,571 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,571 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,571 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,572 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,572 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,572 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,572 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,572 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,572 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,573 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,573 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,573 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,573 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,573 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,573 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,574 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,574 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,574 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,574 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,574 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,575 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,575 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,575 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,575 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,575 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,575 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,576 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,576 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,576 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,576 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,576 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,577 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,577 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,577 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,578 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,579 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,580 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,580 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:47,581 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 07:43:47,581 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-03-25 07:43:47,582 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 07:43:47,583 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 07:43:47,583 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 07:43:47,583 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 07:43:47,583 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 07:43:47,583 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 07:43:47,583 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 07:43:47,583 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 07:43:47,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 43 transitions, 131 flow [2021-03-25 07:43:47,591 INFO L129 PetriNetUnfolder]: 0/48 cut-off events. [2021-03-25 07:43:47,592 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:43:47,592 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 151 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-03-25 07:43:47,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 43 transitions, 131 flow [2021-03-25 07:43:47,593 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 43 transitions, 131 flow [2021-03-25 07:43:47,593 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:43:47,593 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 43 transitions, 131 flow [2021-03-25 07:43:47,593 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 43 transitions, 131 flow [2021-03-25 07:43:47,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 43 transitions, 131 flow [2021-03-25 07:43:47,599 INFO L129 PetriNetUnfolder]: 0/48 cut-off events. [2021-03-25 07:43:47,599 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:43:47,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 174 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-03-25 07:43:47,601 INFO L142 LiptonReduction]: Number of co-enabled transitions 1260 [2021-03-25 07:43:47,639 INFO L154 LiptonReduction]: Checked pairs total: 3194 [2021-03-25 07:43:47,639 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 07:43:47,640 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 47 [2021-03-25 07:43:47,644 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-03-25 07:43:47,644 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:43:47,644 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:43:47,644 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:43:47,645 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:43:47,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:43:47,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1496841348, now seen corresponding path program 1 times [2021-03-25 07:43:47,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:43:47,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452103900] [2021-03-25 07:43:47,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:43:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:43:47,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:43:47,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:43:47,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:43:47,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 07:43:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:43:47,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452103900] [2021-03-25 07:43:47,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:43:47,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 07:43:47,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632123475] [2021-03-25 07:43:47,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 07:43:47,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:43:47,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 07:43:47,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 07:43:47,729 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2021-03-25 07:43:47,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:43:47,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:43:47,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2021-03-25 07:43:47,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:43:49,625 INFO L129 PetriNetUnfolder]: 12575/18290 cut-off events. [2021-03-25 07:43:49,625 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 07:43:49,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35224 conditions, 18290 events. 12575/18290 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 1068. Compared 129523 event pairs, 7859 based on Foata normal form. 0/14055 useless extension candidates. Maximal degree in co-relation 35179. Up to 12044 conditions per place. [2021-03-25 07:43:49,821 INFO L132 encePairwiseOnDemand]: 41/48 looper letters, 32 selfloop transitions, 6 changer transitions 0/55 dead transitions. [2021-03-25 07:43:49,821 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 55 transitions, 231 flow [2021-03-25 07:43:49,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 07:43:49,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 07:43:49,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2021-03-25 07:43:49,831 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2021-03-25 07:43:49,832 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 105 transitions. [2021-03-25 07:43:49,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 105 transitions. [2021-03-25 07:43:49,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:43:49,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 105 transitions. [2021-03-25 07:43:49,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:43:49,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:43:49,848 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:43:49,849 INFO L185 Difference]: Start difference. First operand has 49 places, 38 transitions, 121 flow. Second operand 3 states and 105 transitions. [2021-03-25 07:43:49,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 55 transitions, 231 flow [2021-03-25 07:43:49,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 55 transitions, 211 flow, removed 10 selfloop flow, removed 0 redundant places. [2021-03-25 07:43:49,856 INFO L241 Difference]: Finished difference. Result has 53 places, 43 transitions, 147 flow [2021-03-25 07:43:49,858 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2021-03-25 07:43:49,858 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 4 predicate places. [2021-03-25 07:43:49,859 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:43:49,859 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 43 transitions, 147 flow [2021-03-25 07:43:49,859 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 43 transitions, 147 flow [2021-03-25 07:43:49,859 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 43 transitions, 147 flow [2021-03-25 07:43:49,894 INFO L129 PetriNetUnfolder]: 150/428 cut-off events. [2021-03-25 07:43:49,894 INFO L130 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2021-03-25 07:43:49,896 INFO L84 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 428 events. 150/428 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2625 event pairs, 68 based on Foata normal form. 0/373 useless extension candidates. Maximal degree in co-relation 770. Up to 196 conditions per place. [2021-03-25 07:43:49,903 INFO L142 LiptonReduction]: Number of co-enabled transitions 1128 [2021-03-25 07:43:49,999 INFO L154 LiptonReduction]: Checked pairs total: 978 [2021-03-25 07:43:49,999 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:43:50,000 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 142 [2021-03-25 07:43:50,004 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 147 flow [2021-03-25 07:43:50,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:43:50,004 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:43:50,004 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:43:50,004 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 07:43:50,005 INFO L428 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:43:50,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:43:50,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1461532069, now seen corresponding path program 1 times [2021-03-25 07:43:50,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:43:50,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404398685] [2021-03-25 07:43:50,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:43:50,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 07:43:50,016 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 07:43:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 07:43:50,020 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 07:43:50,025 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 07:43:50,025 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 07:43:50,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 07:43:50,025 WARN L342 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-25 07:43:50,026 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2021-03-25 07:43:50,038 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,038 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,038 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,039 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,039 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,039 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,039 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,039 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,039 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,040 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,040 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,040 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,040 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,040 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,041 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,041 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,041 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,041 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,041 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,042 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,042 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,042 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,042 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,042 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,043 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,046 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,046 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,046 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,046 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,047 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,047 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,047 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,047 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,047 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,047 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,047 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,048 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,048 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,048 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,048 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,048 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,048 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,048 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,048 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,049 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,049 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,049 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,049 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,049 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,052 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,052 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,053 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,054 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,055 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:43:50,055 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 07:43:50,055 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-03-25 07:43:50,056 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 07:43:50,056 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 07:43:50,057 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 07:43:50,057 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 07:43:50,057 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 07:43:50,057 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 07:43:50,057 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 07:43:50,057 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 07:43:50,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 51 transitions, 162 flow [2021-03-25 07:43:50,065 INFO L129 PetriNetUnfolder]: 0/57 cut-off events. [2021-03-25 07:43:50,065 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:43:50,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 57 events. 0/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 204 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-03-25 07:43:50,065 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 51 transitions, 162 flow [2021-03-25 07:43:50,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 51 transitions, 162 flow [2021-03-25 07:43:50,066 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:43:50,066 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 51 transitions, 162 flow [2021-03-25 07:43:50,067 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 51 transitions, 162 flow [2021-03-25 07:43:50,067 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 51 transitions, 162 flow [2021-03-25 07:43:50,072 INFO L129 PetriNetUnfolder]: 0/57 cut-off events. [2021-03-25 07:43:50,072 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:43:50,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 57 events. 0/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 213 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-03-25 07:43:50,074 INFO L142 LiptonReduction]: Number of co-enabled transitions 1848 [2021-03-25 07:43:50,121 INFO L154 LiptonReduction]: Checked pairs total: 4594 [2021-03-25 07:43:50,121 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-25 07:43:50,122 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 56 [2021-03-25 07:43:50,156 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-25 07:43:50,156 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:43:50,156 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:43:50,159 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:43:50,159 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:43:50,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:43:50,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1445764496, now seen corresponding path program 1 times [2021-03-25 07:43:50,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:43:50,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495304460] [2021-03-25 07:43:50,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:43:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:43:50,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:43:50,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:43:50,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:43:50,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 07:43:50,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:43:50,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495304460] [2021-03-25 07:43:50,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:43:50,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 07:43:50,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347474988] [2021-03-25 07:43:50,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 07:43:50,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:43:50,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 07:43:50,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 07:43:50,176 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 57 [2021-03-25 07:43:50,176 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:43:50,176 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:43:50,176 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 57 [2021-03-25 07:43:50,176 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:44:01,458 INFO L129 PetriNetUnfolder]: 80803/109551 cut-off events. [2021-03-25 07:44:01,458 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 07:44:01,972 INFO L84 FinitePrefix]: Finished finitePrefix Result has 212174 conditions, 109551 events. 80803/109551 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4866. Compared 803985 event pairs, 51919 based on Foata normal form. 0/83863 useless extension candidates. Maximal degree in co-relation 212118. Up to 74490 conditions per place. [2021-03-25 07:44:02,629 INFO L132 encePairwiseOnDemand]: 49/57 looper letters, 39 selfloop transitions, 7 changer transitions 0/66 dead transitions. [2021-03-25 07:44:02,629 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 66 transitions, 284 flow [2021-03-25 07:44:02,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 07:44:02,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 07:44:02,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2021-03-25 07:44:02,634 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7309941520467836 [2021-03-25 07:44:02,634 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2021-03-25 07:44:02,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2021-03-25 07:44:02,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:44:02,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2021-03-25 07:44:02,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:44:02,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:44:02,638 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:44:02,638 INFO L185 Difference]: Start difference. First operand has 58 places, 45 transitions, 150 flow. Second operand 3 states and 125 transitions. [2021-03-25 07:44:02,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 66 transitions, 284 flow [2021-03-25 07:44:02,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 66 transitions, 254 flow, removed 15 selfloop flow, removed 0 redundant places. [2021-03-25 07:44:02,641 INFO L241 Difference]: Finished difference. Result has 62 places, 51 transitions, 174 flow [2021-03-25 07:44:02,641 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2021-03-25 07:44:02,642 INFO L343 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2021-03-25 07:44:02,642 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:44:02,642 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 51 transitions, 174 flow [2021-03-25 07:44:02,642 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 51 transitions, 174 flow [2021-03-25 07:44:02,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 51 transitions, 174 flow [2021-03-25 07:44:02,695 INFO L129 PetriNetUnfolder]: 403/929 cut-off events. [2021-03-25 07:44:02,695 INFO L130 PetriNetUnfolder]: For 59/62 co-relation queries the response was YES. [2021-03-25 07:44:02,699 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1770 conditions, 929 events. 403/929 cut-off events. For 59/62 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6260 event pairs, 196 based on Foata normal form. 0/825 useless extension candidates. Maximal degree in co-relation 1751. Up to 497 conditions per place. [2021-03-25 07:44:02,716 INFO L142 LiptonReduction]: Number of co-enabled transitions 1664 [2021-03-25 07:44:02,996 INFO L154 LiptonReduction]: Checked pairs total: 1365 [2021-03-25 07:44:02,996 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:44:02,997 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 355 [2021-03-25 07:44:02,997 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 174 flow [2021-03-25 07:44:02,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:44:02,997 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:44:02,998 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:44:02,998 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 07:44:02,998 INFO L428 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:44:02,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:44:02,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1602775056, now seen corresponding path program 1 times [2021-03-25 07:44:02,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:44:02,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154337426] [2021-03-25 07:44:02,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:44:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 07:44:03,003 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 07:44:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 07:44:03,005 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 07:44:03,007 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 07:44:03,007 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 07:44:03,007 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 07:44:03,007 WARN L342 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-25 07:44:03,008 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2021-03-25 07:44:03,014 WARN L313 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,014 WARN L313 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,014 WARN L313 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,014 WARN L313 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,014 WARN L313 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,014 WARN L313 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,014 WARN L313 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,015 WARN L313 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,015 WARN L313 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,015 WARN L313 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,015 WARN L313 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,015 WARN L313 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,015 WARN L313 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,015 WARN L313 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,016 WARN L313 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,016 WARN L313 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,016 WARN L313 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,016 WARN L313 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,016 WARN L313 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,016 WARN L313 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,016 WARN L313 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,016 WARN L313 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,017 WARN L313 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,017 WARN L313 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,017 WARN L313 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,017 WARN L313 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,017 WARN L313 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,017 WARN L313 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,017 WARN L313 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,017 WARN L313 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,018 WARN L313 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,018 WARN L313 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,018 WARN L313 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,018 WARN L313 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,019 WARN L313 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,019 WARN L313 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,019 WARN L313 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,019 WARN L313 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,019 WARN L313 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,019 WARN L313 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,019 WARN L313 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,019 WARN L313 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,020 WARN L313 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,020 WARN L313 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,020 WARN L313 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,020 WARN L313 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,020 WARN L313 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,020 WARN L313 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,020 WARN L313 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,020 WARN L313 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,021 WARN L313 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,021 WARN L313 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,021 WARN L313 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,021 WARN L313 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,021 WARN L313 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,021 WARN L313 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,021 WARN L313 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,022 WARN L313 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,023 WARN L313 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,023 WARN L313 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,024 WARN L313 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,025 WARN L313 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,026 WARN L313 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:44:03,026 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 07:44:03,027 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-03-25 07:44:03,028 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 07:44:03,028 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 07:44:03,028 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 07:44:03,028 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 07:44:03,028 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 07:44:03,028 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 07:44:03,028 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 07:44:03,028 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 07:44:03,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 74 places, 59 transitions, 195 flow [2021-03-25 07:44:03,033 INFO L129 PetriNetUnfolder]: 0/66 cut-off events. [2021-03-25 07:44:03,033 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:44:03,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 66 events. 0/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 238 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-03-25 07:44:03,034 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 59 transitions, 195 flow [2021-03-25 07:44:03,034 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 59 transitions, 195 flow [2021-03-25 07:44:03,034 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:44:03,034 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 59 transitions, 195 flow [2021-03-25 07:44:03,035 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 59 transitions, 195 flow [2021-03-25 07:44:03,035 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 74 places, 59 transitions, 195 flow [2021-03-25 07:44:03,039 INFO L129 PetriNetUnfolder]: 0/66 cut-off events. [2021-03-25 07:44:03,039 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:44:03,039 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 66 events. 0/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 264 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-03-25 07:44:03,040 INFO L142 LiptonReduction]: Number of co-enabled transitions 2548 [2021-03-25 07:44:03,169 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-03-25 07:44:03,231 INFO L154 LiptonReduction]: Checked pairs total: 6252 [2021-03-25 07:44:03,231 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-25 07:44:03,232 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 198 [2021-03-25 07:44:03,237 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2021-03-25 07:44:03,237 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:44:03,237 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:44:03,237 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:44:03,237 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:44:03,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:44:03,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1790959218, now seen corresponding path program 1 times [2021-03-25 07:44:03,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:44:03,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864620226] [2021-03-25 07:44:03,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:44:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:44:03,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:44:03,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:44:03,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:44:03,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 07:44:03,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:44:03,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864620226] [2021-03-25 07:44:03,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:44:03,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 07:44:03,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441372426] [2021-03-25 07:44:03,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 07:44:03,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:44:03,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 07:44:03,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 07:44:03,250 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 66 [2021-03-25 07:44:03,251 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:44:03,251 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:44:03,251 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 66 [2021-03-25 07:44:03,251 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:46:42,866 INFO L129 PetriNetUnfolder]: 492663/629000 cut-off events. [2021-03-25 07:46:42,866 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 07:46:46,590 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1230897 conditions, 629000 events. 492663/629000 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21173. Compared 4518615 event pairs, 287331 based on Foata normal form. 0/480400 useless extension candidates. Maximal degree in co-relation 1230829. Up to 442536 conditions per place. [2021-03-25 07:46:49,593 INFO L132 encePairwiseOnDemand]: 57/66 looper letters, 46 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2021-03-25 07:46:49,593 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 77 transitions, 339 flow [2021-03-25 07:46:49,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 07:46:49,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 07:46:49,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2021-03-25 07:46:49,595 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7323232323232324 [2021-03-25 07:46:49,595 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 145 transitions. [2021-03-25 07:46:49,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 145 transitions. [2021-03-25 07:46:49,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:46:49,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 145 transitions. [2021-03-25 07:46:49,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:46:49,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:46:49,597 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:46:49,597 INFO L185 Difference]: Start difference. First operand has 67 places, 52 transitions, 181 flow. Second operand 3 states and 145 transitions. [2021-03-25 07:46:49,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 77 transitions, 339 flow [2021-03-25 07:46:49,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 77 transitions, 297 flow, removed 21 selfloop flow, removed 0 redundant places. [2021-03-25 07:46:49,599 INFO L241 Difference]: Finished difference. Result has 71 places, 59 transitions, 201 flow [2021-03-25 07:46:49,599 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=201, PETRI_PLACES=71, PETRI_TRANSITIONS=59} [2021-03-25 07:46:49,600 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 4 predicate places. [2021-03-25 07:46:49,600 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:46:49,600 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 59 transitions, 201 flow [2021-03-25 07:46:49,600 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 59 transitions, 201 flow [2021-03-25 07:46:49,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 59 transitions, 201 flow [2021-03-25 07:46:49,669 INFO L129 PetriNetUnfolder]: 1008/2050 cut-off events. [2021-03-25 07:46:49,669 INFO L130 PetriNetUnfolder]: For 271/279 co-relation queries the response was YES. [2021-03-25 07:46:49,675 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3980 conditions, 2050 events. 1008/2050 cut-off events. For 271/279 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 14957 event pairs, 516 based on Foata normal form. 0/1840 useless extension candidates. Maximal degree in co-relation 3960. Up to 1198 conditions per place. [2021-03-25 07:46:49,699 INFO L142 LiptonReduction]: Number of co-enabled transitions 2304 [2021-03-25 07:46:50,458 INFO L154 LiptonReduction]: Checked pairs total: 2004 [2021-03-25 07:46:50,458 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:46:50,459 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 859 [2021-03-25 07:46:50,459 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 59 transitions, 201 flow [2021-03-25 07:46:50,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:46:50,459 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:46:50,459 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:46:50,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 07:46:50,460 INFO L428 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:46:50,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:46:50,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1606968404, now seen corresponding path program 1 times [2021-03-25 07:46:50,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:46:50,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826958890] [2021-03-25 07:46:50,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:46:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:46:50,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:46:50,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:46:50,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:46:50,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 07:46:50,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-25 07:46:50,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826958890] [2021-03-25 07:46:50,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:46:50,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 07:46:50,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867840419] [2021-03-25 07:46:50,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 07:46:50,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:46:50,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 07:46:50,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 07:46:50,474 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 66 [2021-03-25 07:46:50,474 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 59 transitions, 201 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:46:50,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:46:50,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 66 [2021-03-25 07:46:50,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:51:53,920 INFO L129 PetriNetUnfolder]: 658792/850429 cut-off events. [2021-03-25 07:51:53,921 INFO L130 PetriNetUnfolder]: For 267170/267170 co-relation queries the response was YES. [2021-03-25 07:51:58,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2003039 conditions, 850429 events. 658792/850429 cut-off events. For 267170/267170 co-relation queries the response was YES. Maximal size of possible extension queue 29955. Compared 6540260 event pairs, 385385 based on Foata normal form. 0/673135 useless extension candidates. Maximal degree in co-relation 1722441. Up to 602130 conditions per place. [2021-03-25 07:52:02,420 INFO L132 encePairwiseOnDemand]: 57/66 looper letters, 53 selfloop transitions, 14 changer transitions 0/90 dead transitions. [2021-03-25 07:52:02,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 90 transitions, 439 flow [2021-03-25 07:52:02,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 07:52:02,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 07:52:02,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2021-03-25 07:52:02,421 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7323232323232324 [2021-03-25 07:52:02,421 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 145 transitions. [2021-03-25 07:52:02,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 145 transitions. [2021-03-25 07:52:02,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:52:02,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 145 transitions. [2021-03-25 07:52:02,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:52:02,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:52:02,423 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:52:02,423 INFO L185 Difference]: Start difference. First operand has 71 places, 59 transitions, 201 flow. Second operand 3 states and 145 transitions. [2021-03-25 07:52:02,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 90 transitions, 439 flow [2021-03-25 07:54:43,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 90 transitions, 409 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 07:54:43,166 INFO L241 Difference]: Finished difference. Result has 73 places, 71 transitions, 313 flow [2021-03-25 07:54:43,166 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=73, PETRI_TRANSITIONS=71} [2021-03-25 07:54:43,166 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 6 predicate places. [2021-03-25 07:54:43,166 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:43,166 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 71 transitions, 313 flow [2021-03-25 07:54:43,166 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 71 transitions, 313 flow [2021-03-25 07:54:43,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 71 transitions, 313 flow [2021-03-25 07:54:43,520 INFO L129 PetriNetUnfolder]: 2863/5004 cut-off events. [2021-03-25 07:54:43,520 INFO L130 PetriNetUnfolder]: For 2733/2995 co-relation queries the response was YES. [2021-03-25 07:54:43,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13350 conditions, 5004 events. 2863/5004 cut-off events. For 2733/2995 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 36942 event pairs, 887 based on Foata normal form. 4/4346 useless extension candidates. Maximal degree in co-relation 13329. Up to 3111 conditions per place. [2021-03-25 07:54:43,602 INFO L142 LiptonReduction]: Number of co-enabled transitions 2940 [2021-03-25 07:54:53,391 INFO L154 LiptonReduction]: Checked pairs total: 2676 [2021-03-25 07:54:53,391 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:54:53,391 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10225 [2021-03-25 07:54:53,392 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 313 flow [2021-03-25 07:54:53,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:53,392 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:53,392 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:53,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 07:54:53,392 INFO L428 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:54:53,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:53,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1427752141, now seen corresponding path program 1 times [2021-03-25 07:54:53,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:53,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512722195] [2021-03-25 07:54:53,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 07:54:53,397 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 07:54:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 07:54:53,399 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 07:54:53,400 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 07:54:53,400 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 07:54:53,400 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-25 07:54:53,401 WARN L342 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-25 07:54:53,401 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2021-03-25 07:54:53,407 WARN L313 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,408 WARN L313 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,408 WARN L313 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,408 WARN L313 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,408 WARN L313 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,408 WARN L313 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,408 WARN L313 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,408 WARN L313 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,408 WARN L313 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,408 WARN L313 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,408 WARN L313 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,409 WARN L313 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,409 WARN L313 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,409 WARN L313 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,409 WARN L313 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,409 WARN L313 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,409 WARN L313 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,409 WARN L313 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,409 WARN L313 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,409 WARN L313 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,409 WARN L313 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,409 WARN L313 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,409 WARN L313 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,410 WARN L313 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,410 WARN L313 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,410 WARN L313 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,410 WARN L313 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,410 WARN L313 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,410 WARN L313 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,410 WARN L313 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,410 WARN L313 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,410 WARN L313 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,410 WARN L313 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,411 WARN L313 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,411 WARN L313 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,411 WARN L313 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,411 WARN L313 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,411 WARN L313 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,411 WARN L313 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,411 WARN L313 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,411 WARN L313 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,411 WARN L313 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,411 WARN L313 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,412 WARN L313 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,412 WARN L313 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,412 WARN L313 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,412 WARN L313 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,412 WARN L313 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,412 WARN L313 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,412 WARN L313 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,412 WARN L313 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,412 WARN L313 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,412 WARN L313 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,412 WARN L313 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,413 WARN L313 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,413 WARN L313 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,413 WARN L313 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,413 WARN L313 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,413 WARN L313 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,413 WARN L313 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,413 WARN L313 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,413 WARN L313 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,413 WARN L313 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,413 WARN L313 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,414 WARN L313 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,415 WARN L313 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,415 WARN L313 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,417 WARN L313 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,417 WARN L313 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,418 WARN L313 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,419 WARN L313 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,419 WARN L313 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,420 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 07:54:53,420 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-03-25 07:54:53,421 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 07:54:53,421 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 07:54:53,421 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 07:54:53,421 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 07:54:53,421 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 07:54:53,421 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 07:54:53,421 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 07:54:53,421 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 07:54:53,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 67 transitions, 230 flow [2021-03-25 07:54:53,426 INFO L129 PetriNetUnfolder]: 0/75 cut-off events. [2021-03-25 07:54:53,426 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:54:53,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 75 events. 0/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 297 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-03-25 07:54:53,426 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 67 transitions, 230 flow [2021-03-25 07:54:53,427 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 67 transitions, 230 flow [2021-03-25 07:54:53,427 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:53,427 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 67 transitions, 230 flow [2021-03-25 07:54:53,427 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 67 transitions, 230 flow [2021-03-25 07:54:53,428 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 67 transitions, 230 flow [2021-03-25 07:54:53,431 INFO L129 PetriNetUnfolder]: 0/75 cut-off events. [2021-03-25 07:54:53,431 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:54:53,432 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 75 events. 0/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 301 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-03-25 07:54:53,433 INFO L142 LiptonReduction]: Number of co-enabled transitions 3360 [2021-03-25 07:54:53,494 INFO L154 LiptonReduction]: Checked pairs total: 8602 [2021-03-25 07:54:53,494 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-25 07:54:53,494 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 67 [2021-03-25 07:54:53,496 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-25 07:54:53,496 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:54:53,496 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:53,496 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:53,496 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:54:53,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:53,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1856063672, now seen corresponding path program 1 times [2021-03-25 07:54:53,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:53,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959481869] [2021-03-25 07:54:53,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:53,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:53,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:54:53,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:53,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 07:54:53,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:53,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959481869] [2021-03-25 07:54:53,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:53,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 07:54:53,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339118205] [2021-03-25 07:54:53,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 07:54:53,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:53,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 07:54:53,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 07:54:53,510 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2021-03-25 07:54:53,511 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 59 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:53,511 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:53,511 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2021-03-25 07:54:53,511 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2021-03-25 07:56:50,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 07:56:50,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-25 07:56:50,457 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-25 07:56:50,459 WARN L224 ceAbstractionStarter]: Timeout [2021-03-25 07:56:50,460 INFO L202 PluginConnector]: Adding new model pthread_inc.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 07:56:50 BasicIcfg [2021-03-25 07:56:50,460 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 07:56:50,461 INFO L168 Benchmark]: Toolchain (without parser) took 783890.80 ms. Allocated memory was 255.9 MB in the beginning and 14.3 GB in the end (delta: 14.1 GB). Free memory was 236.3 MB in the beginning and 9.8 GB in the end (delta: -9.6 GB). Peak memory consumption was 8.6 GB. Max. memory is 16.0 GB. [2021-03-25 07:56:50,461 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.14 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:56:50,461 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.14 ms. Allocated memory is still 255.9 MB. Free memory was 236.3 MB in the beginning and 234.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:56:50,461 INFO L168 Benchmark]: Boogie Preprocessor took 14.82 ms. Allocated memory is still 255.9 MB. Free memory was 234.8 MB in the beginning and 234.0 MB in the end (delta: 875.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:56:50,462 INFO L168 Benchmark]: RCFGBuilder took 222.00 ms. Allocated memory is still 255.9 MB. Free memory was 233.9 MB in the beginning and 241.5 MB in the end (delta: -7.6 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.0 GB. [2021-03-25 07:56:50,462 INFO L168 Benchmark]: TraceAbstraction took 783628.60 ms. Allocated memory was 255.9 MB in the beginning and 14.3 GB in the end (delta: 14.1 GB). Free memory was 241.0 MB in the beginning and 9.8 GB in the end (delta: -9.6 GB). Peak memory consumption was 8.6 GB. Max. memory is 16.0 GB. [2021-03-25 07:56:50,463 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 0.14 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 21.14 ms. Allocated memory is still 255.9 MB. Free memory was 236.3 MB in the beginning and 234.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.82 ms. Allocated memory is still 255.9 MB. Free memory was 234.8 MB in the beginning and 234.0 MB in the end (delta: 875.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 222.00 ms. Allocated memory is still 255.9 MB. Free memory was 233.9 MB in the beginning and 241.5 MB in the end (delta: -7.6 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 783628.60 ms. Allocated memory was 255.9 MB in the beginning and 14.3 GB in the end (delta: 14.1 GB). Free memory was 241.0 MB in the beginning and 9.8 GB in the end (delta: -9.6 GB). Peak memory consumption was 8.6 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 260.3ms, 14 PlacesBefore, 10 PlacesAfterwards, 11 TransitionsBefore, 7 TransitionsAfterwards, 28 CoEnabledTransitionPairs, 4 FixpointIterations, 0 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 12 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12, positive: 12, positive conditional: 0, positive unconditional: 12, 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: 10, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 10, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 10, unknown conditional: 0, unknown unconditional: 10] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 24.7ms, 24 PlacesBefore, 22 PlacesAfterwards, 19 TransitionsBefore, 17 TransitionsAfterwards, 168 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 360 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 211, positive: 173, positive conditional: 0, positive unconditional: 173, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 76, positive: 65, positive conditional: 0, positive unconditional: 65, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 76, positive: 65, positive conditional: 0, positive unconditional: 65, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 211, positive: 108, positive conditional: 0, positive unconditional: 108, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 76, unknown conditional: 0, unknown unconditional: 76] , Statistics on independence cache: Total cache size (in pairs): 49, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 39.2ms, 34 PlacesBefore, 31 PlacesAfterwards, 27 TransitionsBefore, 24 TransitionsAfterwards, 420 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 1030 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 394, positive: 333, positive conditional: 0, positive unconditional: 333, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 151, positive: 133, positive conditional: 0, positive unconditional: 133, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 151, positive: 133, positive conditional: 0, positive unconditional: 133, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 394, positive: 200, positive conditional: 0, positive unconditional: 200, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 151, unknown conditional: 0, unknown unconditional: 151] , Statistics on independence cache: Total cache size (in pairs): 94, Positive cache size: 79, Positive conditional cache size: 0, Positive unconditional cache size: 79, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 55.6ms, 44 PlacesBefore, 40 PlacesAfterwards, 35 TransitionsBefore, 31 TransitionsAfterwards, 784 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 1938 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 363, positive: 283, positive conditional: 0, positive unconditional: 283, negative: 80, negative conditional: 0, negative unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 207, positive: 179, positive conditional: 0, positive unconditional: 179, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 207, positive: 179, positive conditional: 0, positive unconditional: 179, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 363, positive: 104, positive conditional: 0, positive unconditional: 104, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 207, unknown conditional: 0, unknown unconditional: 207] , Statistics on independence cache: Total cache size (in pairs): 92, Positive cache size: 70, Positive conditional cache size: 0, Positive unconditional cache size: 70, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 46.3ms, 54 PlacesBefore, 49 PlacesAfterwards, 43 TransitionsBefore, 38 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 3194 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 540, positive: 439, positive conditional: 0, positive unconditional: 439, negative: 101, negative conditional: 0, negative unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 279, positive: 246, positive conditional: 0, positive unconditional: 246, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 279, positive: 246, positive conditional: 0, positive unconditional: 246, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 540, positive: 193, positive conditional: 0, positive unconditional: 193, negative: 68, negative conditional: 0, negative unconditional: 68, unknown: 279, unknown conditional: 0, unknown unconditional: 279] , Statistics on independence cache: Total cache size (in pairs): 103, Positive cache size: 75, Positive conditional cache size: 0, Positive unconditional cache size: 75, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 140.6ms, 53 PlacesBefore, 53 PlacesAfterwards, 43 TransitionsBefore, 43 TransitionsAfterwards, 1128 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 978 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 76, positive: 45, positive conditional: 0, positive unconditional: 45, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 24, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 24, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 76, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 24, unknown conditional: 0, unknown unconditional: 24] , Statistics on independence cache: Total cache size (in pairs): 127, Positive cache size: 89, Positive conditional cache size: 0, Positive unconditional cache size: 89, Negative cache size: 38, Negative conditional cache size: 0, Negative unconditional cache size: 38 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 54.7ms, 64 PlacesBefore, 58 PlacesAfterwards, 51 TransitionsBefore, 45 TransitionsAfterwards, 1848 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 4594 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 594, positive: 476, positive conditional: 0, positive unconditional: 476, negative: 118, negative conditional: 0, negative unconditional: 118, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 326, positive: 287, positive conditional: 0, positive unconditional: 287, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 326, positive: 287, positive conditional: 0, positive unconditional: 287, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 594, positive: 189, positive conditional: 0, positive unconditional: 189, negative: 79, negative conditional: 0, negative unconditional: 79, unknown: 326, unknown conditional: 0, unknown unconditional: 326] , Statistics on independence cache: Total cache size (in pairs): 89, Positive cache size: 56, Positive conditional cache size: 0, Positive unconditional cache size: 56, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 354.2ms, 62 PlacesBefore, 62 PlacesAfterwards, 51 TransitionsBefore, 51 TransitionsAfterwards, 1664 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 1365 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 64, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 31, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 31, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 64, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 31, unknown conditional: 0, unknown unconditional: 31] , Statistics on independence cache: Total cache size (in pairs): 120, Positive cache size: 72, Positive conditional cache size: 0, Positive unconditional cache size: 72, Negative cache size: 48, Negative conditional cache size: 0, Negative unconditional cache size: 48 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 196.8ms, 74 PlacesBefore, 67 PlacesAfterwards, 59 TransitionsBefore, 52 TransitionsAfterwards, 2548 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 6252 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1218, positive: 1083, positive conditional: 0, positive unconditional: 1083, negative: 135, negative conditional: 0, negative unconditional: 135, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 700, positive: 649, positive conditional: 0, positive unconditional: 649, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 700, positive: 649, positive conditional: 0, positive unconditional: 649, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1218, positive: 434, positive conditional: 0, positive unconditional: 434, negative: 84, negative conditional: 0, negative unconditional: 84, unknown: 700, unknown conditional: 0, unknown unconditional: 700] , Statistics on independence cache: Total cache size (in pairs): 329, Positive cache size: 285, Positive conditional cache size: 0, Positive unconditional cache size: 285, Negative cache size: 44, Negative conditional cache size: 0, Negative unconditional cache size: 44 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 858.6ms, 71 PlacesBefore, 71 PlacesAfterwards, 59 TransitionsBefore, 59 TransitionsAfterwards, 2304 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 2004 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 163, positive: 120, positive conditional: 0, positive unconditional: 120, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 30, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 30, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 163, positive: 107, positive conditional: 0, positive unconditional: 107, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 30, unknown conditional: 0, unknown unconditional: 30] , Statistics on independence cache: Total cache size (in pairs): 359, Positive cache size: 298, Positive conditional cache size: 0, Positive unconditional cache size: 298, Negative cache size: 61, Negative conditional cache size: 0, Negative unconditional cache size: 61 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10224.8ms, 73 PlacesBefore, 73 PlacesAfterwards, 71 TransitionsBefore, 71 TransitionsAfterwards, 2940 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 2676 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 148, positive: 100, positive conditional: 0, positive unconditional: 100, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 18, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 18, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 148, positive: 98, positive conditional: 0, positive unconditional: 98, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 18, unknown conditional: 0, unknown unconditional: 18] , Statistics on independence cache: Total cache size (in pairs): 377, Positive cache size: 300, Positive conditional cache size: 0, Positive unconditional cache size: 300, Negative cache size: 77, Negative conditional cache size: 0, Negative unconditional cache size: 77 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 67.0ms, 84 PlacesBefore, 76 PlacesAfterwards, 67 TransitionsBefore, 59 TransitionsAfterwards, 3360 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 8 TotalNumberOfCompositions, 8602 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1018, positive: 858, positive conditional: 0, positive unconditional: 858, negative: 160, negative conditional: 0, negative unconditional: 160, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 619, positive: 546, positive conditional: 0, positive unconditional: 546, negative: 73, negative conditional: 0, negative unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 619, positive: 546, positive conditional: 0, positive unconditional: 546, negative: 73, negative conditional: 0, negative unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1018, positive: 312, positive conditional: 0, positive unconditional: 312, negative: 87, negative conditional: 0, negative unconditional: 87, unknown: 619, unknown conditional: 0, unknown unconditional: 619] , Statistics on independence cache: Total cache size (in pairs): 201, Positive cache size: 136, Positive conditional cache size: 0, Positive unconditional cache size: 136, Negative cache size: 65, Negative conditional cache size: 0, Negative unconditional cache size: 65 - TimeoutResultAtElement [Line: 22]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 22). Cancelled while CegarLoopForPetriNetWithRepeatedLiptonReduction was enhancing Floyd-Hoare automaton (3states, 34/75 universal loopers) in iteration 1,while PetriNetUnfolder was constructing finite prefix that currently has 1006545 conditions, 514285 events (420655/514284 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 67790. Compared 3763884 event pairs, 304665 based on Foata normal form. 0/488402 useless extension candidates. Maximal degree in co-relation 1006464. Up to 389592 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 11 locations, 1 error locations. Started 8 CEGAR loops. EmptinessCheckTime: 49.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 783394.3ms, OverallIterations: 12, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 770589.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 871.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 154 SDtfs, 89 SDslu, 0 SDs, 0 SdLazy, 244 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 206.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=313occurred in iteration=2, InterpolantAutomatonStates: 12, 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: 18.2ms SsaConstructionTime, 32.5ms SatisfiabilityAnalysisTime, 79.9ms InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 71 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown