/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/pthread_inc.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 13:20:11,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 13:20:11,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 13:20:11,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 13:20:11,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 13:20:11,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 13:20:11,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 13:20:11,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 13:20:11,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 13:20:11,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 13:20:11,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 13:20:11,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 13:20:11,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 13:20:11,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 13:20:11,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 13:20:11,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 13:20:11,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 13:20:11,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 13:20:11,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 13:20:11,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 13:20:11,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 13:20:11,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 13:20:11,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 13:20:11,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 13:20:11,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-24 13:20:11,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-24 13:20:11,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-24 13:20:11,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-24 13:20:11,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-24 13:20:11,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-24 13:20:11,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 13:20:11,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 13:20:11,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 13:20:11,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 13:20:11,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 13:20:11,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 13:20:11,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 13:20:11,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 13:20:11,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 13:20:11,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 13:20:11,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 13:20:11,853 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-VariableLbe.epf [2021-03-24 13:20:11,887 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 13:20:11,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 13:20:11,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 13:20:11,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 13:20:11,891 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 13:20:11,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 13:20:11,891 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 13:20:11,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 13:20:11,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 13:20:11,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 13:20:11,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 13:20:11,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 13:20:11,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 13:20:11,893 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 13:20:11,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 13:20:11,893 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 13:20:11,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 13:20:11,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 13:20:11,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 13:20:11,894 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 13:20:11,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 13:20:11,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 13:20:11,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 13:20:11,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 13:20:11,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 13:20:11,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 13:20:11,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 13:20:11,895 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 13:20:11,896 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 13:20:11,896 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 13:20:12,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 13:20:12,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 13:20:12,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 13:20:12,230 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-24 13:20:12,231 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-24 13:20:12,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/pthread_inc.bpl [2021-03-24 13:20:12,232 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/pthread_inc.bpl' [2021-03-24 13:20:12,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 13:20:12,268 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-24 13:20:12,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 13:20:12,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 13:20:12,270 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 13:20:12,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pthread_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:20:12" (1/1) ... [2021-03-24 13:20:12,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pthread_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:20:12" (1/1) ... [2021-03-24 13:20:12,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 13:20:12,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 13:20:12,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 13:20:12,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 13:20:12,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pthread_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:20:12" (1/1) ... [2021-03-24 13:20:12,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pthread_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:20:12" (1/1) ... [2021-03-24 13:20:12,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pthread_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:20:12" (1/1) ... [2021-03-24 13:20:12,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pthread_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:20:12" (1/1) ... [2021-03-24 13:20:12,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pthread_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:20:12" (1/1) ... [2021-03-24 13:20:12,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pthread_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:20:12" (1/1) ... [2021-03-24 13:20:12,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pthread_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:20:12" (1/1) ... [2021-03-24 13:20:12,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 13:20:12,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 13:20:12,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 13:20:12,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 13:20:12,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pthread_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:20:12" (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 [2021-03-24 13:20:12,384 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-24 13:20:12,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 13:20:12,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 13:20:12,384 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread given in one single declaration [2021-03-24 13:20:12,384 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-03-24 13:20:12,384 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-03-24 13:20:12,385 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 13:20:12,536 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 13:20:12,536 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-03-24 13:20:12,542 INFO L202 PluginConnector]: Adding new model pthread_inc.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 01:20:12 BoogieIcfgContainer [2021-03-24 13:20:12,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 13:20:12,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 13:20:12,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 13:20:12,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 13:20:12,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pthread_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:20:12" (1/2) ... [2021-03-24 13:20:12,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15a38a8f and model type pthread_inc.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 01:20:12, skipping insertion in model container [2021-03-24 13:20:12,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pthread_inc.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 01:20:12" (2/2) ... [2021-03-24 13:20:12,553 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread_inc.bpl [2021-03-24 13:20:12,561 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 13:20:12,564 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 13:20:12,565 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 13:20:12,586 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:12,587 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:12,587 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:12,588 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:12,590 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:12,590 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:12,591 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:12,591 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:12,603 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:12,606 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 13:20:12,623 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-24 13:20:12,651 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 13:20:12,652 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 13:20:12,652 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 13:20:12,653 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 13:20:12,653 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 13:20:12,654 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 13:20:12,654 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 13:20:12,654 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 13:20:12,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 14 places, 11 transitions, 27 flow [2021-03-24 13:20:12,683 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-24 13:20:12,683 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:20:12,684 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. [2021-03-24 13:20:12,685 INFO L82 GeneralOperation]: Start removeDead. Operand has 14 places, 11 transitions, 27 flow [2021-03-24 13:20:12,687 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 14 places, 11 transitions, 27 flow [2021-03-24 13:20:12,689 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 13:20:12,697 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 14 places, 11 transitions, 27 flow [2021-03-24 13:20:12,700 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 14 places, 11 transitions, 27 flow [2021-03-24 13:20:12,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 14 places, 11 transitions, 27 flow [2021-03-24 13:20:12,709 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-24 13:20:12,709 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:20:12,709 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. [2021-03-24 13:20:12,711 INFO L142 LiptonReduction]: Number of co-enabled transitions 28 [2021-03-24 13:20:12,997 INFO L154 LiptonReduction]: Checked pairs total: 12 [2021-03-24 13:20:12,997 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-24 13:20:12,999 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 311 [2021-03-24 13:20:13,005 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-24 13:20:13,005 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:20:13,005 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:20:13,006 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2021-03-24 13:20:13,006 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 13:20:13,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:20:13,011 INFO L82 PathProgramCache]: Analyzing trace with hash 50162, now seen corresponding path program 1 times [2021-03-24 13:20:13,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:20:13,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951526511] [2021-03-24 13:20:13,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:20:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 13:20:13,068 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 13:20:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 13:20:13,071 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 13:20:13,081 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 13:20:13,081 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 13:20:13,081 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 13:20:13,082 WARN L342 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-24 13:20:13,082 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-03-24 13:20:13,086 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,086 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,086 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,086 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,087 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,087 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,087 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,087 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,088 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,088 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,088 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,088 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,088 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,089 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,089 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,089 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,089 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,090 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,091 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 13:20:13,091 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 13:20:13,093 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 13:20:13,093 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 13:20:13,093 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 13:20:13,093 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 13:20:13,094 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 13:20:13,094 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 13:20:13,094 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 13:20:13,094 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 13:20:13,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 19 transitions, 50 flow [2021-03-24 13:20:13,099 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-24 13:20:13,099 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:20:13,099 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. [2021-03-24 13:20:13,100 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 19 transitions, 50 flow [2021-03-24 13:20:13,100 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 19 transitions, 50 flow [2021-03-24 13:20:13,100 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 13:20:13,100 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 19 transitions, 50 flow [2021-03-24 13:20:13,101 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 19 transitions, 50 flow [2021-03-24 13:20:13,101 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 19 transitions, 50 flow [2021-03-24 13:20:13,105 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-24 13:20:13,105 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:20:13,106 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. [2021-03-24 13:20:13,106 INFO L142 LiptonReduction]: Number of co-enabled transitions 168 [2021-03-24 13:20:13,138 INFO L154 LiptonReduction]: Checked pairs total: 360 [2021-03-24 13:20:13,138 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-24 13:20:13,139 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 39 [2021-03-24 13:20:13,141 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-24 13:20:13,141 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:20:13,142 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:20:13,142 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-03-24 13:20:13,142 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:20:13,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:20:13,143 INFO L82 PathProgramCache]: Analyzing trace with hash 2331670, now seen corresponding path program 1 times [2021-03-24 13:20:13,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:20:13,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516875755] [2021-03-24 13:20:13,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:20:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 13:20:13,147 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 13:20:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 13:20:13,149 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 13:20:13,150 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 13:20:13,151 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 13:20:13,151 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 13:20:13,151 WARN L342 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-24 13:20:13,155 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-03-24 13:20:13,163 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,163 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,164 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,165 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,165 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,166 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,167 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,167 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,169 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,169 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,170 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,173 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,174 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,174 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,174 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,179 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,180 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,180 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,180 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,180 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,180 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,180 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,181 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,181 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,181 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,183 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,184 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,185 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 13:20:13,185 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-24 13:20:13,192 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 13:20:13,192 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 13:20:13,192 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 13:20:13,192 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 13:20:13,192 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 13:20:13,192 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 13:20:13,192 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 13:20:13,192 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 13:20:13,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 27 transitions, 75 flow [2021-03-24 13:20:13,199 INFO L129 PetriNetUnfolder]: 0/30 cut-off events. [2021-03-24 13:20:13,199 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:20:13,199 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. [2021-03-24 13:20:13,199 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 27 transitions, 75 flow [2021-03-24 13:20:13,200 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 27 transitions, 75 flow [2021-03-24 13:20:13,200 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 13:20:13,200 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 27 transitions, 75 flow [2021-03-24 13:20:13,200 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 27 transitions, 75 flow [2021-03-24 13:20:13,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 27 transitions, 75 flow [2021-03-24 13:20:13,223 INFO L129 PetriNetUnfolder]: 0/30 cut-off events. [2021-03-24 13:20:13,223 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:20:13,223 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. [2021-03-24 13:20:13,225 INFO L142 LiptonReduction]: Number of co-enabled transitions 420 [2021-03-24 13:20:13,271 INFO L154 LiptonReduction]: Checked pairs total: 1030 [2021-03-24 13:20:13,271 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-24 13:20:13,271 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 71 [2021-03-24 13:20:13,275 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-24 13:20:13,275 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:20:13,275 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:20:13,275 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-24 13:20:13,276 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:20:13,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:20:13,276 INFO L82 PathProgramCache]: Analyzing trace with hash 100172263, now seen corresponding path program 1 times [2021-03-24 13:20:13,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:20:13,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304605745] [2021-03-24 13:20:13,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:20:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 13:20:13,281 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 13:20:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 13:20:13,284 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 13:20:13,285 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 13:20:13,285 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 13:20:13,286 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 13:20:13,286 WARN L342 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-24 13:20:13,286 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-03-24 13:20:13,291 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,291 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,291 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,292 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,292 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,292 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,292 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,292 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,293 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,293 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,293 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,293 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,293 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,293 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,294 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,294 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,294 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,294 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,294 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,295 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,295 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,295 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,295 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,295 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,296 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,296 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,296 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,296 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,296 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,296 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,297 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,297 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,297 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,298 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,299 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,300 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,301 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 13:20:13,301 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-24 13:20:13,302 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 13:20:13,302 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 13:20:13,303 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 13:20:13,303 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 13:20:13,303 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 13:20:13,303 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 13:20:13,303 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 13:20:13,303 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 13:20:13,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 35 transitions, 102 flow [2021-03-24 13:20:13,311 INFO L129 PetriNetUnfolder]: 0/39 cut-off events. [2021-03-24 13:20:13,312 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:20:13,312 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. [2021-03-24 13:20:13,312 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 35 transitions, 102 flow [2021-03-24 13:20:13,313 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 35 transitions, 102 flow [2021-03-24 13:20:13,313 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 13:20:13,313 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 35 transitions, 102 flow [2021-03-24 13:20:13,313 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 35 transitions, 102 flow [2021-03-24 13:20:13,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 35 transitions, 102 flow [2021-03-24 13:20:13,320 INFO L129 PetriNetUnfolder]: 0/39 cut-off events. [2021-03-24 13:20:13,320 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:20:13,320 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. [2021-03-24 13:20:13,321 INFO L142 LiptonReduction]: Number of co-enabled transitions 784 [2021-03-24 13:20:13,369 INFO L154 LiptonReduction]: Checked pairs total: 1938 [2021-03-24 13:20:13,369 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-24 13:20:13,369 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 56 [2021-03-24 13:20:13,373 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-24 13:20:13,374 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:20:13,374 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:20:13,374 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-24 13:20:13,374 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:20:13,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:20:13,375 INFO L82 PathProgramCache]: Analyzing trace with hash -58775453, now seen corresponding path program 1 times [2021-03-24 13:20:13,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:20:13,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975482494] [2021-03-24 13:20:13,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:20:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 13:20:13,379 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 13:20:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 13:20:13,382 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 13:20:13,383 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 13:20:13,384 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 13:20:13,384 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 13:20:13,384 WARN L342 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-24 13:20:13,384 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2021-03-24 13:20:13,390 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,390 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,390 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,390 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,390 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,391 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,391 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,391 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,391 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,391 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,392 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,392 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,392 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,392 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,392 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,392 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,393 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,393 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,393 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,393 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,393 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,393 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,393 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,394 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,394 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,394 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,394 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,394 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,395 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,395 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,395 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,395 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,395 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,395 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,396 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,396 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,396 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,396 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,396 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,396 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,397 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,398 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,398 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,399 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,400 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:13,401 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 13:20:13,401 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-03-24 13:20:13,402 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 13:20:13,402 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 13:20:13,402 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 13:20:13,402 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 13:20:13,402 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 13:20:13,403 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 13:20:13,403 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 13:20:13,403 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 13:20:13,404 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 43 transitions, 131 flow [2021-03-24 13:20:13,412 INFO L129 PetriNetUnfolder]: 0/48 cut-off events. [2021-03-24 13:20:13,412 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:20:13,413 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. [2021-03-24 13:20:13,413 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 43 transitions, 131 flow [2021-03-24 13:20:13,413 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 43 transitions, 131 flow [2021-03-24 13:20:13,414 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 13:20:13,414 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 43 transitions, 131 flow [2021-03-24 13:20:13,414 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 43 transitions, 131 flow [2021-03-24 13:20:13,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 43 transitions, 131 flow [2021-03-24 13:20:13,421 INFO L129 PetriNetUnfolder]: 0/48 cut-off events. [2021-03-24 13:20:13,421 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:20:13,421 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. [2021-03-24 13:20:13,423 INFO L142 LiptonReduction]: Number of co-enabled transitions 1260 [2021-03-24 13:20:13,494 INFO L154 LiptonReduction]: Checked pairs total: 3194 [2021-03-24 13:20:13,495 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-24 13:20:13,495 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 82 [2021-03-24 13:20:13,509 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-03-24 13:20:13,509 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:20:13,511 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:20:13,511 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:20:13,511 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:20:13,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:20:13,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1496841348, now seen corresponding path program 1 times [2021-03-24 13:20:13,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:20:13,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023130456] [2021-03-24 13:20:13,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:20:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:20:13,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:20:13,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:20:13,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:20:13,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 13:20:13,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:20:13,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023130456] [2021-03-24 13:20:13,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:20:13,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 13:20:13,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776808770] [2021-03-24 13:20:13,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:20:13,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:20:13,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:20:13,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:20:13,612 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2021-03-24 13:20:13,613 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) [2021-03-24 13:20:13,613 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:20:13,613 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2021-03-24 13:20:13,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:20:15,668 INFO L129 PetriNetUnfolder]: 12575/18290 cut-off events. [2021-03-24 13:20:15,668 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-24 13:20:15,733 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. [2021-03-24 13:20:15,871 INFO L132 encePairwiseOnDemand]: 41/48 looper letters, 32 selfloop transitions, 6 changer transitions 0/55 dead transitions. [2021-03-24 13:20:15,871 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 55 transitions, 231 flow [2021-03-24 13:20:15,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:20:15,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:20:15,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2021-03-24 13:20:15,880 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2021-03-24 13:20:15,881 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 105 transitions. [2021-03-24 13:20:15,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 105 transitions. [2021-03-24 13:20:15,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:20:15,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 105 transitions. [2021-03-24 13:20:15,885 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) [2021-03-24 13:20:15,888 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) [2021-03-24 13:20:15,888 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) [2021-03-24 13:20:15,890 INFO L185 Difference]: Start difference. First operand has 49 places, 38 transitions, 121 flow. Second operand 3 states and 105 transitions. [2021-03-24 13:20:15,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 55 transitions, 231 flow [2021-03-24 13:20:15,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 55 transitions, 211 flow, removed 10 selfloop flow, removed 0 redundant places. [2021-03-24 13:20:15,895 INFO L241 Difference]: Finished difference. Result has 53 places, 43 transitions, 147 flow [2021-03-24 13:20:15,896 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} [2021-03-24 13:20:15,897 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 4 predicate places. [2021-03-24 13:20:15,897 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 147 flow [2021-03-24 13:20:15,897 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) [2021-03-24 13:20:15,897 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:20:15,898 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:20:15,898 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 13:20:15,898 INFO L428 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:20:15,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:20:15,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1461532069, now seen corresponding path program 1 times [2021-03-24 13:20:15,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:20:15,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650561211] [2021-03-24 13:20:15,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:20:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 13:20:15,903 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 13:20:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 13:20:15,906 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 13:20:15,907 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 13:20:15,908 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 13:20:15,908 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 13:20:15,908 WARN L342 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-24 13:20:15,908 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2021-03-24 13:20:15,914 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,914 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,914 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,914 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,914 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,915 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,915 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,915 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,915 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,915 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,915 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,915 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,915 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,916 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,916 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,916 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,916 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,916 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,916 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,916 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,916 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,917 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,917 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,917 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,917 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,917 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,917 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,917 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,917 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,918 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,918 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,918 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,918 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,918 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,918 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,918 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,919 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,919 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,919 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,919 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,919 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,919 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,919 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,920 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,920 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,920 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,920 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,920 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,921 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,922 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,922 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,923 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,924 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,925 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:15,925 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 13:20:15,925 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-03-24 13:20:15,926 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 13:20:15,926 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 13:20:15,927 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 13:20:15,927 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 13:20:15,927 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 13:20:15,927 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 13:20:15,927 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 13:20:15,927 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 13:20:15,928 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 51 transitions, 162 flow [2021-03-24 13:20:15,932 INFO L129 PetriNetUnfolder]: 0/57 cut-off events. [2021-03-24 13:20:15,933 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:20:15,933 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. [2021-03-24 13:20:15,933 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 51 transitions, 162 flow [2021-03-24 13:20:15,934 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 51 transitions, 162 flow [2021-03-24 13:20:15,934 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 13:20:15,934 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 51 transitions, 162 flow [2021-03-24 13:20:15,934 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 51 transitions, 162 flow [2021-03-24 13:20:15,934 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 51 transitions, 162 flow [2021-03-24 13:20:15,938 INFO L129 PetriNetUnfolder]: 0/57 cut-off events. [2021-03-24 13:20:15,938 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:20:15,939 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. [2021-03-24 13:20:15,940 INFO L142 LiptonReduction]: Number of co-enabled transitions 1848 [2021-03-24 13:20:15,986 INFO L154 LiptonReduction]: Checked pairs total: 4594 [2021-03-24 13:20:15,987 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-24 13:20:15,987 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 53 [2021-03-24 13:20:15,990 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-24 13:20:15,990 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:20:15,990 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:20:15,990 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:20:15,990 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:20:15,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:20:15,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1445764496, now seen corresponding path program 1 times [2021-03-24 13:20:15,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:20:15,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773557676] [2021-03-24 13:20:15,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:20:15,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:20:16,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:20:16,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:20:16,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:20:16,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 13:20:16,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:20:16,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773557676] [2021-03-24 13:20:16,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:20:16,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 13:20:16,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434877116] [2021-03-24 13:20:16,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:20:16,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:20:16,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:20:16,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:20:16,007 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 57 [2021-03-24 13:20:16,007 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) [2021-03-24 13:20:16,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:20:16,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 57 [2021-03-24 13:20:16,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:20:27,771 INFO L129 PetriNetUnfolder]: 80803/109551 cut-off events. [2021-03-24 13:20:27,771 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-24 13:20:28,286 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. [2021-03-24 13:20:29,103 INFO L132 encePairwiseOnDemand]: 49/57 looper letters, 39 selfloop transitions, 7 changer transitions 0/66 dead transitions. [2021-03-24 13:20:29,103 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 66 transitions, 284 flow [2021-03-24 13:20:29,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:20:29,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:20:29,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2021-03-24 13:20:29,107 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7309941520467836 [2021-03-24 13:20:29,107 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2021-03-24 13:20:29,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2021-03-24 13:20:29,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:20:29,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2021-03-24 13:20:29,110 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) [2021-03-24 13:20:29,111 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) [2021-03-24 13:20:29,111 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) [2021-03-24 13:20:29,111 INFO L185 Difference]: Start difference. First operand has 58 places, 45 transitions, 150 flow. Second operand 3 states and 125 transitions. [2021-03-24 13:20:29,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 66 transitions, 284 flow [2021-03-24 13:20:29,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 66 transitions, 254 flow, removed 15 selfloop flow, removed 0 redundant places. [2021-03-24 13:20:29,113 INFO L241 Difference]: Finished difference. Result has 62 places, 51 transitions, 174 flow [2021-03-24 13:20:29,114 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} [2021-03-24 13:20:29,114 INFO L343 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2021-03-24 13:20:29,114 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 174 flow [2021-03-24 13:20:29,114 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) [2021-03-24 13:20:29,114 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:20:29,114 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:20:29,115 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 13:20:29,115 INFO L428 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:20:29,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:20:29,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1602775056, now seen corresponding path program 1 times [2021-03-24 13:20:29,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:20:29,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367350352] [2021-03-24 13:20:29,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:20:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 13:20:29,123 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 13:20:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 13:20:29,130 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 13:20:29,135 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 13:20:29,135 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 13:20:29,136 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 13:20:29,136 WARN L342 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-24 13:20:29,138 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2021-03-24 13:20:29,146 WARN L313 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,146 WARN L313 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,147 WARN L313 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,147 WARN L313 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,147 WARN L313 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,147 WARN L313 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,147 WARN L313 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,147 WARN L313 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,148 WARN L313 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,148 WARN L313 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,148 WARN L313 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,148 WARN L313 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,148 WARN L313 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,148 WARN L313 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,148 WARN L313 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,148 WARN L313 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,149 WARN L313 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,149 WARN L313 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,149 WARN L313 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,149 WARN L313 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,150 WARN L313 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,150 WARN L313 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,150 WARN L313 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,150 WARN L313 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,150 WARN L313 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,151 WARN L313 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,151 WARN L313 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,151 WARN L313 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,151 WARN L313 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,151 WARN L313 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,151 WARN L313 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,151 WARN L313 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,152 WARN L313 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,152 WARN L313 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,152 WARN L313 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,152 WARN L313 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,154 WARN L313 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,154 WARN L313 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,154 WARN L313 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,154 WARN L313 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,154 WARN L313 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,155 WARN L313 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,155 WARN L313 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,155 WARN L313 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,155 WARN L313 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,155 WARN L313 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,155 WARN L313 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,155 WARN L313 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,156 WARN L313 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,156 WARN L313 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,156 WARN L313 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,159 WARN L313 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,160 WARN L313 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,160 WARN L313 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,160 WARN L313 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,160 WARN L313 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,160 WARN L313 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,161 WARN L313 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,162 WARN L313 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,163 WARN L313 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,164 WARN L313 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,165 WARN L313 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,166 WARN L313 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:20:29,166 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 13:20:29,166 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-03-24 13:20:29,168 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 13:20:29,168 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 13:20:29,168 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 13:20:29,168 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 13:20:29,169 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 13:20:29,169 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 13:20:29,169 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 13:20:29,169 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 13:20:29,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 74 places, 59 transitions, 195 flow [2021-03-24 13:20:29,178 INFO L129 PetriNetUnfolder]: 0/66 cut-off events. [2021-03-24 13:20:29,178 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:20:29,179 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. [2021-03-24 13:20:29,179 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 59 transitions, 195 flow [2021-03-24 13:20:29,180 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 59 transitions, 195 flow [2021-03-24 13:20:29,180 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 13:20:29,180 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 59 transitions, 195 flow [2021-03-24 13:20:29,180 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 59 transitions, 195 flow [2021-03-24 13:20:29,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 74 places, 59 transitions, 195 flow [2021-03-24 13:20:29,185 INFO L129 PetriNetUnfolder]: 0/66 cut-off events. [2021-03-24 13:20:29,185 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:20:29,185 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. [2021-03-24 13:20:29,187 INFO L142 LiptonReduction]: Number of co-enabled transitions 2548 [2021-03-24 13:20:29,256 INFO L154 LiptonReduction]: Checked pairs total: 6252 [2021-03-24 13:20:29,257 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-24 13:20:29,257 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 77 [2021-03-24 13:20:29,262 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2021-03-24 13:20:29,262 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:20:29,262 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:20:29,263 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:20:29,263 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:20:29,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:20:29,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1790959218, now seen corresponding path program 1 times [2021-03-24 13:20:29,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:20:29,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914451033] [2021-03-24 13:20:29,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:20:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:20:29,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:20:29,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:20:29,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:20:29,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 13:20:29,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:20:29,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914451033] [2021-03-24 13:20:29,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:20:29,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 13:20:29,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669899649] [2021-03-24 13:20:29,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:20:29,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:20:29,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:20:29,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:20:29,298 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 66 [2021-03-24 13:20:29,298 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) [2021-03-24 13:20:29,298 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:20:29,298 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 66 [2021-03-24 13:20:29,298 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:23:17,487 INFO L129 PetriNetUnfolder]: 492663/629000 cut-off events. [2021-03-24 13:23:17,487 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-24 13:23:21,144 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. [2021-03-24 13:23:24,322 INFO L132 encePairwiseOnDemand]: 57/66 looper letters, 46 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2021-03-24 13:23:24,322 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 77 transitions, 339 flow [2021-03-24 13:23:24,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:23:24,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:23:24,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2021-03-24 13:23:24,324 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7323232323232324 [2021-03-24 13:23:24,324 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 145 transitions. [2021-03-24 13:23:24,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 145 transitions. [2021-03-24 13:23:24,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:23:24,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 145 transitions. [2021-03-24 13:23:24,329 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) [2021-03-24 13:23:24,331 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) [2021-03-24 13:23:24,331 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) [2021-03-24 13:23:24,332 INFO L185 Difference]: Start difference. First operand has 67 places, 52 transitions, 181 flow. Second operand 3 states and 145 transitions. [2021-03-24 13:23:24,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 77 transitions, 339 flow [2021-03-24 13:23:24,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 77 transitions, 297 flow, removed 21 selfloop flow, removed 0 redundant places. [2021-03-24 13:23:24,336 INFO L241 Difference]: Finished difference. Result has 71 places, 59 transitions, 201 flow [2021-03-24 13:23:24,336 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} [2021-03-24 13:23:24,336 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 4 predicate places. [2021-03-24 13:23:24,336 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 59 transitions, 201 flow [2021-03-24 13:23:24,337 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) [2021-03-24 13:23:24,337 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:23:24,337 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:23:24,337 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 13:23:24,337 INFO L428 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:23:24,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:23:24,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1606968404, now seen corresponding path program 1 times [2021-03-24 13:23:24,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:23:24,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569014251] [2021-03-24 13:23:24,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:23:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:23:24,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:23:24,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:23:24,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:23:24,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 13:23:24,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-24 13:23:24,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569014251] [2021-03-24 13:23:24,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:23:24,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 13:23:24,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118737619] [2021-03-24 13:23:24,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:23:24,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:23:24,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:23:24,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:23:24,372 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 66 [2021-03-24 13:23:24,373 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) [2021-03-24 13:23:24,373 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:23:24,373 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 66 [2021-03-24 13:23:24,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:28:29,705 INFO L129 PetriNetUnfolder]: 658792/850429 cut-off events. [2021-03-24 13:28:29,706 INFO L130 PetriNetUnfolder]: For 267170/267170 co-relation queries the response was YES. [2021-03-24 13:28:33,904 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. [2021-03-24 13:28:38,489 INFO L132 encePairwiseOnDemand]: 57/66 looper letters, 53 selfloop transitions, 14 changer transitions 0/90 dead transitions. [2021-03-24 13:28:38,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 90 transitions, 439 flow [2021-03-24 13:28:38,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:28:38,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:28:38,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2021-03-24 13:28:38,497 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7323232323232324 [2021-03-24 13:28:38,497 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 145 transitions. [2021-03-24 13:28:38,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 145 transitions. [2021-03-24 13:28:38,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:28:38,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 145 transitions. [2021-03-24 13:28:38,498 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) [2021-03-24 13:28:38,498 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) [2021-03-24 13:28:38,498 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) [2021-03-24 13:28:38,498 INFO L185 Difference]: Start difference. First operand has 71 places, 59 transitions, 201 flow. Second operand 3 states and 145 transitions. [2021-03-24 13:28:38,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 90 transitions, 439 flow [2021-03-24 13:31:25,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 90 transitions, 409 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 13:31:25,435 INFO L241 Difference]: Finished difference. Result has 73 places, 71 transitions, 313 flow [2021-03-24 13:31:25,435 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} [2021-03-24 13:31:25,436 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 6 predicate places. [2021-03-24 13:31:25,436 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 313 flow [2021-03-24 13:31:25,436 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) [2021-03-24 13:31:25,436 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:31:25,436 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:31:25,436 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 13:31:25,436 INFO L428 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:31:25,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:31:25,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1427752141, now seen corresponding path program 1 times [2021-03-24 13:31:25,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:31:25,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034977591] [2021-03-24 13:31:25,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:31:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 13:31:25,440 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 13:31:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 13:31:25,442 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 13:31:25,443 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 13:31:25,444 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 13:31:25,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 13:31:25,444 WARN L342 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-24 13:31:25,444 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2021-03-24 13:31:25,451 WARN L313 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,451 WARN L313 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,451 WARN L313 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,451 WARN L313 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,452 WARN L313 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,452 WARN L313 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,452 WARN L313 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,452 WARN L313 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,452 WARN L313 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,452 WARN L313 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,452 WARN L313 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,452 WARN L313 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,452 WARN L313 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,452 WARN L313 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,452 WARN L313 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,452 WARN L313 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,453 WARN L313 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,453 WARN L313 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,453 WARN L313 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,453 WARN L313 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,453 WARN L313 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,453 WARN L313 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,453 WARN L313 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,453 WARN L313 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,453 WARN L313 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,453 WARN L313 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,453 WARN L313 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,454 WARN L313 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,454 WARN L313 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,454 WARN L313 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,454 WARN L313 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,454 WARN L313 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,454 WARN L313 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,454 WARN L313 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,454 WARN L313 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,454 WARN L313 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,454 WARN L313 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,454 WARN L313 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,455 WARN L313 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,455 WARN L313 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,455 WARN L313 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,455 WARN L313 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,455 WARN L313 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,455 WARN L313 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,455 WARN L313 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,455 WARN L313 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,455 WARN L313 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,455 WARN L313 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,455 WARN L313 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,456 WARN L313 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,456 WARN L313 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,456 WARN L313 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,456 WARN L313 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,456 WARN L313 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,456 WARN L313 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,456 WARN L313 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,456 WARN L313 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,456 WARN L313 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,456 WARN L313 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,457 WARN L313 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,457 WARN L313 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,457 WARN L313 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,457 WARN L313 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,457 WARN L313 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,457 WARN L313 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,458 WARN L313 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,459 WARN L313 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,460 WARN L313 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,461 WARN L313 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,462 WARN L313 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,462 WARN L313 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,463 WARN L313 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_v not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:31:25,463 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 13:31:25,464 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-03-24 13:31:25,464 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 13:31:25,464 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 13:31:25,464 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 13:31:25,465 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 13:31:25,465 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 13:31:25,465 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 13:31:25,465 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 13:31:25,465 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 13:31:25,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 67 transitions, 230 flow [2021-03-24 13:31:25,469 INFO L129 PetriNetUnfolder]: 0/75 cut-off events. [2021-03-24 13:31:25,469 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:31:25,470 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. [2021-03-24 13:31:25,470 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 67 transitions, 230 flow [2021-03-24 13:31:25,470 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 67 transitions, 230 flow [2021-03-24 13:31:25,470 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 13:31:25,470 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 67 transitions, 230 flow [2021-03-24 13:31:25,471 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 67 transitions, 230 flow [2021-03-24 13:31:25,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 67 transitions, 230 flow [2021-03-24 13:31:25,475 INFO L129 PetriNetUnfolder]: 0/75 cut-off events. [2021-03-24 13:31:25,475 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:31:25,475 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. [2021-03-24 13:31:25,476 INFO L142 LiptonReduction]: Number of co-enabled transitions 3360 [2021-03-24 13:31:25,539 INFO L154 LiptonReduction]: Checked pairs total: 8602 [2021-03-24 13:31:25,539 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-24 13:31:25,539 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 69 [2021-03-24 13:31:25,541 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-24 13:31:25,541 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:31:25,541 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:31:25,541 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:31:25,541 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]=== [2021-03-24 13:31:25,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:31:25,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1856063672, now seen corresponding path program 1 times [2021-03-24 13:31:25,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:31:25,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539066080] [2021-03-24 13:31:25,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:31:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:31:25,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:25,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:31:25,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:25,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 13:31:25,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:31:25,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539066080] [2021-03-24 13:31:25,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:31:25,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 13:31:25,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870800639] [2021-03-24 13:31:25,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:31:25,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:31:25,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:31:25,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:31:25,555 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2021-03-24 13:31:25,555 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) [2021-03-24 13:31:25,555 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:31:25,555 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2021-03-24 13:31:25,555 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2021-03-24 13:33:14,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:33:14,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-24 13:33:14,036 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-24 13:33:14,039 WARN L224 ceAbstractionStarter]: Timeout [2021-03-24 13:33:14,039 INFO L202 PluginConnector]: Adding new model pthread_inc.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 01:33:14 BasicIcfg [2021-03-24 13:33:14,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 13:33:14,040 INFO L168 Benchmark]: Toolchain (without parser) took 781771.82 ms. Allocated memory was 255.9 MB in the beginning and 14.3 GB in the end (delta: 14.0 GB). Free memory was 236.8 MB in the beginning and 9.9 GB in the end (delta: -9.6 GB). Peak memory consumption was 9.2 GB. Max. memory is 16.0 GB. [2021-03-24 13:33:14,041 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 13:33:14,041 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.64 ms. Allocated memory is still 255.9 MB. Free memory was 236.7 MB in the beginning and 235.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 13:33:14,041 INFO L168 Benchmark]: Boogie Preprocessor took 18.93 ms. Allocated memory is still 255.9 MB. Free memory was 235.2 MB in the beginning and 234.3 MB in the end (delta: 849.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 13:33:14,042 INFO L168 Benchmark]: RCFGBuilder took 222.21 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 241.6 MB in the end (delta: -7.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 16.0 GB. [2021-03-24 13:33:14,042 INFO L168 Benchmark]: TraceAbstraction took 781494.75 ms. Allocated memory was 255.9 MB in the beginning and 14.3 GB in the end (delta: 14.0 GB). Free memory was 241.1 MB in the beginning and 9.9 GB in the end (delta: -9.6 GB). Peak memory consumption was 9.2 GB. Max. memory is 16.0 GB. [2021-03-24 13:33:14,044 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 29.64 ms. Allocated memory is still 255.9 MB. Free memory was 236.7 MB in the beginning and 235.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.93 ms. Allocated memory is still 255.9 MB. Free memory was 235.2 MB in the beginning and 234.3 MB in the end (delta: 849.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 222.21 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 241.6 MB in the end (delta: -7.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 781494.75 ms. Allocated memory was 255.9 MB in the beginning and 14.3 GB in the end (delta: 14.0 GB). Free memory was 241.1 MB in the beginning and 9.9 GB in the end (delta: -9.6 GB). Peak memory consumption was 9.2 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 297.7ms, 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: 37.6ms, 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: 70.9ms, 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: 55.7ms, 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: 80.8ms, 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: 52.6ms, 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: 76.5ms, 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: 68.6ms, 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 CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (3states, 34/75 universal loopers) in iteration 1,while PetriNetUnfolder was constructing finite prefix that currently has 971156 conditions, 496207 events (405808/496206 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 65868. Compared 3629570 event pairs, 295754 based on Foata normal form. 0/472395 useless extension candidates. Maximal degree in co-relation 971075. Up to 377499 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 11 locations, 1 error locations. Started 8 CEGAR loops. EmptinessCheckTime: 32.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 781234.3ms, OverallIterations: 12, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 779982.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 860.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 154 SDtfs, 89 SDslu, 0 SDs, 0 SdLazy, 244 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 225.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.8ms 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: 7.2ms SsaConstructionTime, 52.3ms SatisfiabilityAnalysisTime, 95.8ms 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