/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 22:21:39,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 22:21:39,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 22:21:39,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-24 22:21:39,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 22:21:39,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 22:21:39,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 22:21:39,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 22:21:39,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 22:21:39,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 22:21:39,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 22:21:39,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 22:21:39,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 22:21:39,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 22:21:39,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 22:21:39,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 22:21:39,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 22:21:39,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 22:21:39,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 22:21:39,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 22:21:39,112 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-SemanticLbe.epf [2021-03-24 22:21:39,135 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 22:21:39,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 22:21:39,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 22:21:39,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 22:21:39,137 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 22:21:39,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 22:21:39,138 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 22:21:39,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 22:21:39,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 22:21:39,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 22:21:39,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 22:21:39,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 22:21:39,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 22:21:39,139 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 22:21:39,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 22:21:39,139 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 22:21:39,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 22:21:39,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 22:21:39,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 22:21:39,140 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 22:21:39,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 22:21:39,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 22:21:39,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 22:21:39,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 22:21:39,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 22:21:39,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 22:21:39,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 22:21:39,141 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 22:21:39,141 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 22:21:39,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 22:21:39,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 22:21:39,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 22:21:39,452 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-24 22:21:39,453 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-24 22:21:39,454 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl [2021-03-24 22:21:39,454 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl' [2021-03-24 22:21:39,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 22:21:39,482 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-24 22:21:39,483 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 22:21:39,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 22:21:39,483 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 22:21:39,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:21:39" (1/1) ... [2021-03-24 22:21:39,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:21:39" (1/1) ... [2021-03-24 22:21:39,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 22:21:39,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 22:21:39,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 22:21:39,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 22:21:39,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:21:39" (1/1) ... [2021-03-24 22:21:39,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:21:39" (1/1) ... [2021-03-24 22:21:39,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:21:39" (1/1) ... [2021-03-24 22:21:39,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:21:39" (1/1) ... [2021-03-24 22:21:39,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:21:39" (1/1) ... [2021-03-24 22:21:39,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:21:39" (1/1) ... [2021-03-24 22:21:39,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:21:39" (1/1) ... [2021-03-24 22:21:39,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 22:21:39,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 22:21:39,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 22:21:39,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 22:21:39,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:21:39" (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 22:21:39,593 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process2 given in one single declaration [2021-03-24 22:21:39,594 INFO L130 BoogieDeclarations]: Found specification of procedure Process2 [2021-03-24 22:21:39,594 INFO L138 BoogieDeclarations]: Found implementation of procedure Process2 [2021-03-24 22:21:39,595 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2021-03-24 22:21:39,595 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2021-03-24 22:21:39,596 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2021-03-24 22:21:39,596 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-24 22:21:39,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 22:21:39,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 22:21:39,597 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Clock given in one single declaration [2021-03-24 22:21:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure Clock [2021-03-24 22:21:39,597 INFO L138 BoogieDeclarations]: Found implementation of procedure Clock [2021-03-24 22:21:39,598 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 22:21:39,741 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 22:21:39,741 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-03-24 22:21:39,742 INFO L202 PluginConnector]: Adding new model Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:21:39 BoogieIcfgContainer [2021-03-24 22:21:39,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 22:21:39,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 22:21:39,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 22:21:39,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 22:21:39,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:21:39" (1/2) ... [2021-03-24 22:21:39,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dfd40e3 and model type Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:21:39, skipping insertion in model container [2021-03-24 22:21:39,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:21:39" (2/2) ... [2021-03-24 22:21:39,748 INFO L111 eAbstractionObserver]: Analyzing ICFG Fischer.bpl [2021-03-24 22:21:39,753 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 22:21:39,756 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-24 22:21:39,756 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 22:21:39,777 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:21:39,777 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:21:39,778 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:21:39,778 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:21:39,779 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:21:39,779 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:21:39,779 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:21:39,779 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:21:39,780 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:21:39,781 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:21:39,782 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:21:39,782 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:21:39,782 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:21:39,782 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:21:39,783 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:21:39,783 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:21:39,788 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:21:39,789 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:21:39,791 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 22:21:39,806 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-03-24 22:21:39,849 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 22:21:39,850 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 22:21:39,850 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 22:21:39,856 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 22:21:39,856 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 22:21:39,856 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 22:21:39,857 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 22:21:39,857 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 22:21:39,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 46 transitions, 107 flow [2021-03-24 22:21:39,909 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-03-24 22:21:39,909 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 22:21:39,913 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 5/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 111 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-03-24 22:21:39,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 46 transitions, 107 flow [2021-03-24 22:21:39,917 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 43 transitions, 95 flow [2021-03-24 22:21:39,918 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 22:21:39,930 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 43 transitions, 95 flow [2021-03-24 22:21:39,933 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 43 transitions, 95 flow [2021-03-24 22:21:39,934 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 43 transitions, 95 flow [2021-03-24 22:21:39,945 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-03-24 22:21:39,945 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 22:21:39,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 5/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 108 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-03-24 22:21:39,948 INFO L142 LiptonReduction]: Number of co-enabled transitions 818 [2021-03-24 22:21:40,417 INFO L154 LiptonReduction]: Checked pairs total: 1066 [2021-03-24 22:21:40,418 INFO L156 LiptonReduction]: Total number of compositions: 11 [2021-03-24 22:21:40,420 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 503 [2021-03-24 22:21:40,434 INFO L129 PetriNetUnfolder]: 1/12 cut-off events. [2021-03-24 22:21:40,435 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 22:21:40,435 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:21:40,436 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-24 22:21:40,436 INFO L428 AbstractCegarLoop]: === Iteration 1 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 22:21:40,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:21:40,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1098058064, now seen corresponding path program 1 times [2021-03-24 22:21:40,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:21:40,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354710579] [2021-03-24 22:21:40,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:21:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:21:40,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:40,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:21:40,537 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 22:21:40,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354710579] [2021-03-24 22:21:40,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:21:40,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-24 22:21:40,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229574558] [2021-03-24 22:21:40,548 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:21:40,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:21:40,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:21:40,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:21:40,573 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 57 [2021-03-24 22:21:40,575 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 73 flow. Second operand has 3 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 22:21:40,575 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:21:40,575 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 57 [2021-03-24 22:21:40,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:21:40,630 INFO L129 PetriNetUnfolder]: 31/108 cut-off events. [2021-03-24 22:21:40,630 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 22:21:40,633 INFO L84 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 108 events. 31/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 361 event pairs, 4 based on Foata normal form. 41/138 useless extension candidates. Maximal degree in co-relation 153. Up to 30 conditions per place. [2021-03-24 22:21:40,635 INFO L132 encePairwiseOnDemand]: 45/57 looper letters, 8 selfloop transitions, 7 changer transitions 0/35 dead transitions. [2021-03-24 22:21:40,635 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 35 transitions, 109 flow [2021-03-24 22:21:40,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:21:40,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:21:40,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2021-03-24 22:21:40,647 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8538011695906432 [2021-03-24 22:21:40,648 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2021-03-24 22:21:40,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2021-03-24 22:21:40,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:21:40,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2021-03-24 22:21:40,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 22:21:40,664 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 22:21:40,664 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 22:21:40,666 INFO L185 Difference]: Start difference. First operand has 37 places, 32 transitions, 73 flow. Second operand 3 states and 146 transitions. [2021-03-24 22:21:40,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 35 transitions, 109 flow [2021-03-24 22:21:40,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 106 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 22:21:40,673 INFO L241 Difference]: Finished difference. Result has 35 places, 35 transitions, 120 flow [2021-03-24 22:21:40,674 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=35, PETRI_TRANSITIONS=35} [2021-03-24 22:21:40,675 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2021-03-24 22:21:40,675 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 35 transitions, 120 flow [2021-03-24 22:21:40,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 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 22:21:40,675 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:21:40,675 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:21:40,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 22:21:40,676 INFO L428 AbstractCegarLoop]: === Iteration 2 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 22:21:40,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:21:40,677 INFO L82 PathProgramCache]: Analyzing trace with hash -747120156, now seen corresponding path program 1 times [2021-03-24 22:21:40,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:21:40,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619024959] [2021-03-24 22:21:40,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:21:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:21:40,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:40,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:21:40,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:40,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:21:40,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:40,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:21:40,704 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 22:21:40,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619024959] [2021-03-24 22:21:40,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:21:40,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:21:40,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944550669] [2021-03-24 22:21:40,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:21:40,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:21:40,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:21:40,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:21:40,708 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 57 [2021-03-24 22:21:40,708 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 35 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 22:21:40,708 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:21:40,708 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 57 [2021-03-24 22:21:40,708 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:21:40,758 INFO L129 PetriNetUnfolder]: 98/249 cut-off events. [2021-03-24 22:21:40,759 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-03-24 22:21:40,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 249 events. 98/249 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1089 event pairs, 13 based on Foata normal form. 5/230 useless extension candidates. Maximal degree in co-relation 528. Up to 115 conditions per place. [2021-03-24 22:21:40,763 INFO L132 encePairwiseOnDemand]: 47/57 looper letters, 13 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2021-03-24 22:21:40,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 180 flow [2021-03-24 22:21:40,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:21:40,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:21:40,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2021-03-24 22:21:40,765 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7134502923976608 [2021-03-24 22:21:40,765 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2021-03-24 22:21:40,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2021-03-24 22:21:40,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:21:40,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2021-03-24 22:21:40,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 22:21:40,766 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 22:21:40,767 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 22:21:40,767 INFO L185 Difference]: Start difference. First operand has 35 places, 35 transitions, 120 flow. Second operand 3 states and 122 transitions. [2021-03-24 22:21:40,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 44 transitions, 180 flow [2021-03-24 22:21:40,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 22:21:40,770 INFO L241 Difference]: Finished difference. Result has 37 places, 42 transitions, 170 flow [2021-03-24 22:21:40,770 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=37, PETRI_TRANSITIONS=42} [2021-03-24 22:21:40,771 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2021-03-24 22:21:40,771 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 42 transitions, 170 flow [2021-03-24 22:21:40,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 22:21:40,771 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:21:40,771 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:21:40,771 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 22:21:40,772 INFO L428 AbstractCegarLoop]: === Iteration 3 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 22:21:40,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:21:40,772 INFO L82 PathProgramCache]: Analyzing trace with hash -135944616, now seen corresponding path program 2 times [2021-03-24 22:21:40,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:21:40,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929695868] [2021-03-24 22:21:40,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:21:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:21:40,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:40,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:21:40,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:40,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:21:40,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:40,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:21:40,788 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 22:21:40,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929695868] [2021-03-24 22:21:40,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:21:40,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:21:40,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890036430] [2021-03-24 22:21:40,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:21:40,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:21:40,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:21:40,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:21:40,790 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 57 [2021-03-24 22:21:40,791 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 42 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 22:21:40,791 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:21:40,791 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 57 [2021-03-24 22:21:40,791 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:21:40,830 INFO L129 PetriNetUnfolder]: 91/246 cut-off events. [2021-03-24 22:21:40,830 INFO L130 PetriNetUnfolder]: For 92/110 co-relation queries the response was YES. [2021-03-24 22:21:40,832 INFO L84 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 246 events. 91/246 cut-off events. For 92/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1000 event pairs, 17 based on Foata normal form. 12/245 useless extension candidates. Maximal degree in co-relation 601. Up to 111 conditions per place. [2021-03-24 22:21:40,833 INFO L132 encePairwiseOnDemand]: 49/57 looper letters, 14 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2021-03-24 22:21:40,833 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 204 flow [2021-03-24 22:21:40,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:21:40,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:21:40,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2021-03-24 22:21:40,835 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6900584795321637 [2021-03-24 22:21:40,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 118 transitions. [2021-03-24 22:21:40,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 118 transitions. [2021-03-24 22:21:40,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:21:40,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 118 transitions. [2021-03-24 22:21:40,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 22:21:40,836 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 22:21:40,837 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 22:21:40,837 INFO L185 Difference]: Start difference. First operand has 37 places, 42 transitions, 170 flow. Second operand 3 states and 118 transitions. [2021-03-24 22:21:40,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 204 flow [2021-03-24 22:21:40,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 22:21:40,839 INFO L241 Difference]: Finished difference. Result has 38 places, 41 transitions, 169 flow [2021-03-24 22:21:40,839 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=38, PETRI_TRANSITIONS=41} [2021-03-24 22:21:40,840 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2021-03-24 22:21:40,840 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 41 transitions, 169 flow [2021-03-24 22:21:40,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 22:21:40,840 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:21:40,840 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:21:40,840 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 22:21:40,840 INFO L428 AbstractCegarLoop]: === Iteration 4 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 22:21:40,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:21:40,841 INFO L82 PathProgramCache]: Analyzing trace with hash -674076936, now seen corresponding path program 1 times [2021-03-24 22:21:40,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:21:40,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366616286] [2021-03-24 22:21:40,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:21:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:21:40,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:40,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:21:40,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:40,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:21:40,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:40,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:21:40,858 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 22:21:40,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366616286] [2021-03-24 22:21:40,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:21:40,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:21:40,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916607775] [2021-03-24 22:21:40,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:21:40,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:21:40,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:21:40,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:21:40,860 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 57 [2021-03-24 22:21:40,860 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 41 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 22:21:40,860 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:21:40,860 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 57 [2021-03-24 22:21:40,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:21:40,898 INFO L129 PetriNetUnfolder]: 98/275 cut-off events. [2021-03-24 22:21:40,898 INFO L130 PetriNetUnfolder]: For 117/127 co-relation queries the response was YES. [2021-03-24 22:21:40,899 INFO L84 FinitePrefix]: Finished finitePrefix Result has 707 conditions, 275 events. 98/275 cut-off events. For 117/127 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1182 event pairs, 14 based on Foata normal form. 5/268 useless extension candidates. Maximal degree in co-relation 695. Up to 94 conditions per place. [2021-03-24 22:21:40,901 INFO L132 encePairwiseOnDemand]: 49/57 looper letters, 14 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2021-03-24 22:21:40,901 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 47 transitions, 240 flow [2021-03-24 22:21:40,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:21:40,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:21:40,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2021-03-24 22:21:40,903 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.695906432748538 [2021-03-24 22:21:40,903 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2021-03-24 22:21:40,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2021-03-24 22:21:40,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:21:40,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2021-03-24 22:21:40,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 22:21:40,905 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 22:21:40,905 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 22:21:40,905 INFO L185 Difference]: Start difference. First operand has 38 places, 41 transitions, 169 flow. Second operand 3 states and 119 transitions. [2021-03-24 22:21:40,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 47 transitions, 240 flow [2021-03-24 22:21:40,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 47 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:21:40,908 INFO L241 Difference]: Finished difference. Result has 41 places, 45 transitions, 232 flow [2021-03-24 22:21:40,908 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=41, PETRI_TRANSITIONS=45} [2021-03-24 22:21:40,908 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2021-03-24 22:21:40,909 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 45 transitions, 232 flow [2021-03-24 22:21:40,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 22:21:40,909 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:21:40,909 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:21:40,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 22:21:40,909 INFO L428 AbstractCegarLoop]: === Iteration 5 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 22:21:40,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:21:40,910 INFO L82 PathProgramCache]: Analyzing trace with hash -2083755598, now seen corresponding path program 2 times [2021-03-24 22:21:40,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:21:40,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806857322] [2021-03-24 22:21:40,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:21:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:21:40,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:40,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:21:40,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:40,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:21:40,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:40,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:21:40,926 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 22:21:40,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806857322] [2021-03-24 22:21:40,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:21:40,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:21:40,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466188186] [2021-03-24 22:21:40,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:21:40,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:21:40,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:21:40,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:21:40,929 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 57 [2021-03-24 22:21:40,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 45 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 22:21:40,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:21:40,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 57 [2021-03-24 22:21:40,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:21:40,983 INFO L129 PetriNetUnfolder]: 86/260 cut-off events. [2021-03-24 22:21:40,983 INFO L130 PetriNetUnfolder]: For 371/385 co-relation queries the response was YES. [2021-03-24 22:21:40,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 782 conditions, 260 events. 86/260 cut-off events. For 371/385 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1053 event pairs, 13 based on Foata normal form. 16/263 useless extension candidates. Maximal degree in co-relation 769. Up to 82 conditions per place. [2021-03-24 22:21:40,988 INFO L132 encePairwiseOnDemand]: 49/57 looper letters, 14 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2021-03-24 22:21:40,988 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 264 flow [2021-03-24 22:21:40,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:21:40,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:21:40,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2021-03-24 22:21:40,991 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7076023391812866 [2021-03-24 22:21:40,991 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 121 transitions. [2021-03-24 22:21:40,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 121 transitions. [2021-03-24 22:21:40,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:21:40,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 121 transitions. [2021-03-24 22:21:40,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 22:21:40,994 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 22:21:40,994 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 22:21:40,994 INFO L185 Difference]: Start difference. First operand has 41 places, 45 transitions, 232 flow. Second operand 3 states and 121 transitions. [2021-03-24 22:21:40,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 264 flow [2021-03-24 22:21:40,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 248 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 22:21:40,999 INFO L241 Difference]: Finished difference. Result has 41 places, 43 transitions, 216 flow [2021-03-24 22:21:40,999 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=41, PETRI_TRANSITIONS=43} [2021-03-24 22:21:40,999 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2021-03-24 22:21:40,999 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 43 transitions, 216 flow [2021-03-24 22:21:41,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 22:21:41,000 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:21:41,000 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:21:41,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 22:21:41,000 INFO L428 AbstractCegarLoop]: === Iteration 6 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 22:21:41,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:21:41,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1819494052, now seen corresponding path program 1 times [2021-03-24 22:21:41,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:21:41,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315203307] [2021-03-24 22:21:41,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:21:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:21:41,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:41,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:21:41,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:41,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 22:21:41,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:41,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:21:41,043 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 22:21:41,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315203307] [2021-03-24 22:21:41,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:21:41,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:21:41,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158495260] [2021-03-24 22:21:41,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 22:21:41,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:21:41,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 22:21:41,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 22:21:41,045 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 57 [2021-03-24 22:21:41,045 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 43 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:21:41,046 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:21:41,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 57 [2021-03-24 22:21:41,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:21:41,113 INFO L129 PetriNetUnfolder]: 179/387 cut-off events. [2021-03-24 22:21:41,113 INFO L130 PetriNetUnfolder]: For 294/300 co-relation queries the response was YES. [2021-03-24 22:21:41,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 387 events. 179/387 cut-off events. For 294/300 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1437 event pairs, 22 based on Foata normal form. 12/384 useless extension candidates. Maximal degree in co-relation 1006. Up to 189 conditions per place. [2021-03-24 22:21:41,117 INFO L132 encePairwiseOnDemand]: 53/57 looper letters, 13 selfloop transitions, 3 changer transitions 4/49 dead transitions. [2021-03-24 22:21:41,117 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 284 flow [2021-03-24 22:21:41,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 22:21:41,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 22:21:41,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 138 transitions. [2021-03-24 22:21:41,119 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2021-03-24 22:21:41,119 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 138 transitions. [2021-03-24 22:21:41,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 138 transitions. [2021-03-24 22:21:41,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:21:41,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 138 transitions. [2021-03-24 22:21:41,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 22:21:41,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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 22:21:41,122 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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 22:21:41,122 INFO L185 Difference]: Start difference. First operand has 41 places, 43 transitions, 216 flow. Second operand 4 states and 138 transitions. [2021-03-24 22:21:41,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 284 flow [2021-03-24 22:21:41,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 49 transitions, 275 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:21:41,127 INFO L241 Difference]: Finished difference. Result has 44 places, 44 transitions, 222 flow [2021-03-24 22:21:41,128 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=44, PETRI_TRANSITIONS=44} [2021-03-24 22:21:41,128 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2021-03-24 22:21:41,128 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 222 flow [2021-03-24 22:21:41,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:21:41,128 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:21:41,128 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:21:41,129 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 22:21:41,129 INFO L428 AbstractCegarLoop]: === Iteration 7 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 22:21:41,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:21:41,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1167678865, now seen corresponding path program 1 times [2021-03-24 22:21:41,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:21:41,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704440124] [2021-03-24 22:21:41,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:21:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:21:41,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:41,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:21:41,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:41,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 22:21:41,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:41,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:21:41,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:41,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 22:21:41,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:41,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 22:21:41,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:41,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:21:41,213 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 22:21:41,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704440124] [2021-03-24 22:21:41,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:21:41,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:21:41,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110687646] [2021-03-24 22:21:41,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 22:21:41,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:21:41,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 22:21:41,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-24 22:21:41,216 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 57 [2021-03-24 22:21:41,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 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 22:21:41,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:21:41,217 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 57 [2021-03-24 22:21:41,217 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:21:41,365 INFO L129 PetriNetUnfolder]: 185/417 cut-off events. [2021-03-24 22:21:41,365 INFO L130 PetriNetUnfolder]: For 354/365 co-relation queries the response was YES. [2021-03-24 22:21:41,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1232 conditions, 417 events. 185/417 cut-off events. For 354/365 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1520 event pairs, 19 based on Foata normal form. 8/415 useless extension candidates. Maximal degree in co-relation 1215. Up to 128 conditions per place. [2021-03-24 22:21:41,369 INFO L132 encePairwiseOnDemand]: 49/57 looper letters, 16 selfloop transitions, 3 changer transitions 19/66 dead transitions. [2021-03-24 22:21:41,369 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 66 transitions, 410 flow [2021-03-24 22:21:41,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:21:41,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:21:41,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 235 transitions. [2021-03-24 22:21:41,371 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5889724310776943 [2021-03-24 22:21:41,371 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 235 transitions. [2021-03-24 22:21:41,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 235 transitions. [2021-03-24 22:21:41,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:21:41,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 235 transitions. [2021-03-24 22:21:41,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 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 22:21:41,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 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 22:21:41,374 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 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 22:21:41,374 INFO L185 Difference]: Start difference. First operand has 44 places, 44 transitions, 222 flow. Second operand 7 states and 235 transitions. [2021-03-24 22:21:41,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 66 transitions, 410 flow [2021-03-24 22:21:41,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 66 transitions, 393 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-03-24 22:21:41,380 INFO L241 Difference]: Finished difference. Result has 52 places, 43 transitions, 228 flow [2021-03-24 22:21:41,380 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=228, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2021-03-24 22:21:41,381 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 15 predicate places. [2021-03-24 22:21:41,381 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 228 flow [2021-03-24 22:21:41,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 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 22:21:41,381 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:21:41,381 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:21:41,381 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 22:21:41,389 INFO L428 AbstractCegarLoop]: === Iteration 8 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 22:21:41,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:21:41,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1282880251, now seen corresponding path program 2 times [2021-03-24 22:21:41,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:21:41,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018535320] [2021-03-24 22:21:41,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:21:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:21:41,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:41,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:21:41,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:41,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 22:21:41,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:41,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:21:41,441 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 22:21:41,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018535320] [2021-03-24 22:21:41,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:21:41,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:21:41,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637237096] [2021-03-24 22:21:41,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 22:21:41,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:21:41,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 22:21:41,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 22:21:41,443 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 57 [2021-03-24 22:21:41,443 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 22:21:41,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:21:41,443 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 57 [2021-03-24 22:21:41,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:21:41,496 INFO L129 PetriNetUnfolder]: 159/371 cut-off events. [2021-03-24 22:21:41,496 INFO L130 PetriNetUnfolder]: For 479/490 co-relation queries the response was YES. [2021-03-24 22:21:41,498 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1168 conditions, 371 events. 159/371 cut-off events. For 479/490 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1317 event pairs, 26 based on Foata normal form. 12/371 useless extension candidates. Maximal degree in co-relation 1147. Up to 191 conditions per place. [2021-03-24 22:21:41,499 INFO L132 encePairwiseOnDemand]: 53/57 looper letters, 13 selfloop transitions, 3 changer transitions 4/49 dead transitions. [2021-03-24 22:21:41,499 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 49 transitions, 299 flow [2021-03-24 22:21:41,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 22:21:41,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 22:21:41,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2021-03-24 22:21:41,501 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6008771929824561 [2021-03-24 22:21:41,501 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 137 transitions. [2021-03-24 22:21:41,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 137 transitions. [2021-03-24 22:21:41,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:21:41,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 137 transitions. [2021-03-24 22:21:41,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 22:21:41,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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 22:21:41,502 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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 22:21:41,502 INFO L185 Difference]: Start difference. First operand has 52 places, 43 transitions, 228 flow. Second operand 4 states and 137 transitions. [2021-03-24 22:21:41,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 49 transitions, 299 flow [2021-03-24 22:21:41,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 285 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-03-24 22:21:41,505 INFO L241 Difference]: Finished difference. Result has 48 places, 44 transitions, 234 flow [2021-03-24 22:21:41,505 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2021-03-24 22:21:41,505 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2021-03-24 22:21:41,506 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 234 flow [2021-03-24 22:21:41,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 22:21:41,506 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:21:41,506 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:21:41,506 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 22:21:41,506 INFO L428 AbstractCegarLoop]: === Iteration 9 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 22:21:41,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:21:41,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1026153892, now seen corresponding path program 3 times [2021-03-24 22:21:41,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:21:41,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840848698] [2021-03-24 22:21:41,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:21:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:21:41,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:41,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:21:41,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:41,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 22:21:41,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:41,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:21:41,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:41,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 22:21:41,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:41,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 22:21:41,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:21:41,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:21:41,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:21:41,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840848698] [2021-03-24 22:21:41,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:21:41,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:21:41,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129337245] [2021-03-24 22:21:41,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 22:21:41,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:21:41,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 22:21:41,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-24 22:21:41,570 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 57 [2021-03-24 22:21:41,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 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 22:21:41,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:21:41,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 57 [2021-03-24 22:21:41,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:21:41,667 INFO L129 PetriNetUnfolder]: 75/172 cut-off events. [2021-03-24 22:21:41,667 INFO L130 PetriNetUnfolder]: For 239/243 co-relation queries the response was YES. [2021-03-24 22:21:41,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 172 events. 75/172 cut-off events. For 239/243 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 469 event pairs, 4 based on Foata normal form. 8/178 useless extension candidates. Maximal degree in co-relation 588. Up to 60 conditions per place. [2021-03-24 22:21:41,669 INFO L132 encePairwiseOnDemand]: 49/57 looper letters, 0 selfloop transitions, 0 changer transitions 51/51 dead transitions. [2021-03-24 22:21:41,669 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 363 flow [2021-03-24 22:21:41,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:21:41,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:21:41,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2021-03-24 22:21:41,670 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5864661654135338 [2021-03-24 22:21:41,670 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 234 transitions. [2021-03-24 22:21:41,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 234 transitions. [2021-03-24 22:21:41,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:21:41,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 234 transitions. [2021-03-24 22:21:41,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:21:41,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 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 22:21:41,672 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 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 22:21:41,672 INFO L185 Difference]: Start difference. First operand has 48 places, 44 transitions, 234 flow. Second operand 7 states and 234 transitions. [2021-03-24 22:21:41,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 363 flow [2021-03-24 22:21:41,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 51 transitions, 318 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-03-24 22:21:41,675 INFO L241 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2021-03-24 22:21:41,675 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2021-03-24 22:21:41,675 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2021-03-24 22:21:41,675 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2021-03-24 22:21:41,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 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 22:21:41,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 22:21:41,680 INFO L202 PluginConnector]: Adding new model Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 10:21:41 BasicIcfg [2021-03-24 22:21:41,680 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 22:21:41,681 INFO L168 Benchmark]: Toolchain (without parser) took 2198.22 ms. Allocated memory is still 354.4 MB. Free memory was 334.5 MB in the beginning and 286.9 MB in the end (delta: 47.7 MB). Peak memory consumption was 47.4 MB. Max. memory is 16.0 GB. [2021-03-24 22:21:41,681 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 354.4 MB. Free memory was 335.6 MB in the beginning and 335.6 MB in the end (delta: 70.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 22:21:41,682 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.34 ms. Allocated memory is still 354.4 MB. Free memory was 334.4 MB in the beginning and 333.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 22:21:41,682 INFO L168 Benchmark]: Boogie Preprocessor took 18.23 ms. Allocated memory is still 354.4 MB. Free memory was 333.0 MB in the beginning and 332.0 MB in the end (delta: 978.8 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-24 22:21:41,683 INFO L168 Benchmark]: RCFGBuilder took 217.06 ms. Allocated memory is still 354.4 MB. Free memory was 331.9 MB in the beginning and 319.6 MB in the end (delta: 12.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-24 22:21:41,686 INFO L168 Benchmark]: TraceAbstraction took 1935.98 ms. Allocated memory is still 354.4 MB. Free memory was 319.1 MB in the beginning and 286.9 MB in the end (delta: 32.3 MB). Peak memory consumption was 30.6 MB. Max. memory is 16.0 GB. [2021-03-24 22:21:41,690 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 0.13 ms. Allocated memory is still 354.4 MB. Free memory was 335.6 MB in the beginning and 335.6 MB in the end (delta: 70.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.34 ms. Allocated memory is still 354.4 MB. Free memory was 334.4 MB in the beginning and 333.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.23 ms. Allocated memory is still 354.4 MB. Free memory was 333.0 MB in the beginning and 332.0 MB in the end (delta: 978.8 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * RCFGBuilder took 217.06 ms. Allocated memory is still 354.4 MB. Free memory was 331.9 MB in the beginning and 319.6 MB in the end (delta: 12.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1935.98 ms. Allocated memory is still 354.4 MB. Free memory was 319.1 MB in the beginning and 286.9 MB in the end (delta: 32.3 MB). Peak memory consumption was 30.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 485.6ms, 48 PlacesBefore, 37 PlacesAfterwards, 43 TransitionsBefore, 32 TransitionsAfterwards, 818 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 11 TotalNumberOfCompositions, 1066 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 727, positive: 675, positive conditional: 0, positive unconditional: 675, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 425, positive: 398, positive conditional: 0, positive unconditional: 398, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 425, positive: 398, positive conditional: 0, positive unconditional: 398, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 425, positive: 378, positive conditional: 0, positive unconditional: 378, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 47, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 203, positive: 83, positive conditional: 0, positive unconditional: 83, negative: 120, negative conditional: 0, negative unconditional: 120, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 727, positive: 277, positive conditional: 0, positive unconditional: 277, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 425, unknown conditional: 0, unknown unconditional: 425] , Statistics on independence cache: Total cache size (in pairs): 173, Positive cache size: 153, Positive conditional cache size: 0, Positive unconditional cache size: 153, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - PositiveResult [Line: 78]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 57]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 42 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1831.8ms, OverallIterations: 9, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 769.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 574.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 95 SDtfs, 61 SDslu, 13 SDs, 0 SdLazy, 230 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 173.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 135.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred in iteration=8, InterpolantAutomatonStates: 37, 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: 11.6ms SsaConstructionTime, 63.0ms SatisfiabilityAnalysisTime, 246.3ms InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 121 ConstructedInterpolants, 0 QuantifiedInterpolants, 319 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...