/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/NonAtomicIncrement_2Threads.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 07:54:52,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 07:54:52,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 07:54:52,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 07:54:52,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 07:54:52,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 07:54:52,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 07:54:52,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 07:54:52,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 07:54:52,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 07:54:52,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 07:54:52,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 07:54:52,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 07:54:52,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 07:54:52,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 07:54:52,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 07:54:52,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 07:54:52,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 07:54:52,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 07:54:52,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 07:54:52,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 07:54:52,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 07:54:52,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 07:54:52,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 07:54:52,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 07:54:52,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 07:54:52,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 07:54:52,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 07:54:52,847 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf [2021-03-25 07:54:52,866 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 07:54:52,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 07:54:52,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 07:54:52,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 07:54:52,868 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 07:54:52,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 07:54:52,872 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 07:54:52,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 07:54:52,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 07:54:52,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 07:54:52,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 07:54:52,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 07:54:52,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 07:54:52,873 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 07:54:52,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 07:54:52,873 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 07:54:52,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 07:54:52,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 07:54:52,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 07:54:52,874 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 07:54:52,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 07:54:52,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 07:54:52,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 07:54:52,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 07:54:52,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 07:54:52,875 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 07:54:52,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 07:54:52,876 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 07:54:52,876 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 07:54:52,876 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 07:54:52,876 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 07:54:53,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 07:54:53,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 07:54:53,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 07:54:53,186 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 07:54:53,187 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 07:54:53,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/NonAtomicIncrement_2Threads.bpl [2021-03-25 07:54:53,192 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/NonAtomicIncrement_2Threads.bpl' [2021-03-25 07:54:53,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 07:54:53,236 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 07:54:53,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 07:54:53,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 07:54:53,240 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 07:54:53,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:53" (1/1) ... [2021-03-25 07:54:53,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:53" (1/1) ... [2021-03-25 07:54:53,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 07:54:53,264 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 07:54:53,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 07:54:53,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 07:54:53,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:53" (1/1) ... [2021-03-25 07:54:53,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:53" (1/1) ... [2021-03-25 07:54:53,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:53" (1/1) ... [2021-03-25 07:54:53,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:53" (1/1) ... [2021-03-25 07:54:53,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:53" (1/1) ... [2021-03-25 07:54:53,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:53" (1/1) ... [2021-03-25 07:54:53,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:53" (1/1) ... [2021-03-25 07:54:53,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 07:54:53,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 07:54:53,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 07:54:53,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 07:54:53,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 07:54:53,349 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 07:54:53,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 07:54:53,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 07:54:53,351 INFO L124 BoogieDeclarations]: Specification and implementation of procedure IncrementProcess1 given in one single declaration [2021-03-25 07:54:53,351 INFO L130 BoogieDeclarations]: Found specification of procedure IncrementProcess1 [2021-03-25 07:54:53,351 INFO L138 BoogieDeclarations]: Found implementation of procedure IncrementProcess1 [2021-03-25 07:54:53,351 INFO L124 BoogieDeclarations]: Specification and implementation of procedure IncrementProcess2 given in one single declaration [2021-03-25 07:54:53,351 INFO L130 BoogieDeclarations]: Found specification of procedure IncrementProcess2 [2021-03-25 07:54:53,351 INFO L138 BoogieDeclarations]: Found implementation of procedure IncrementProcess2 [2021-03-25 07:54:53,352 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 07:54:53,486 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 07:54:53,486 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 07:54:53,487 INFO L202 PluginConnector]: Adding new model NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:54:53 BoogieIcfgContainer [2021-03-25 07:54:53,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 07:54:53,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 07:54:53,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 07:54:53,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 07:54:53,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:53" (1/2) ... [2021-03-25 07:54:53,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@700f8dbb and model type NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 07:54:53, skipping insertion in model container [2021-03-25 07:54:53,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:54:53" (2/2) ... [2021-03-25 07:54:53,493 INFO L111 eAbstractionObserver]: Analyzing ICFG NonAtomicIncrement_2Threads.bpl [2021-03-25 07:54:53,497 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 07:54:53,500 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 07:54:53,501 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 07:54:53,529 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,529 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,530 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,530 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,530 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,530 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,531 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,531 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,531 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,531 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,531 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,532 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,532 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,532 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,533 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,533 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,533 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,533 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,533 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,534 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,534 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,534 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,534 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,534 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,536 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,553 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:53,558 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-25 07:54:53,586 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 07:54:53,617 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 07:54:53,617 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 07:54:53,617 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 07:54:53,617 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 07:54:53,617 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 07:54:53,617 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 07:54:53,618 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 07:54:53,618 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 07:54:53,639 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 26 transitions, 74 flow [2021-03-25 07:54:53,665 INFO L129 PetriNetUnfolder]: 1/24 cut-off events. [2021-03-25 07:54:53,666 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 07:54:53,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 24 events. 1/24 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 9. Up to 3 conditions per place. [2021-03-25 07:54:53,668 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 26 transitions, 74 flow [2021-03-25 07:54:53,671 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 22 transitions, 62 flow [2021-03-25 07:54:53,672 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:53,679 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 27 places, 22 transitions, 62 flow [2021-03-25 07:54:53,682 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 27 places, 22 transitions, 62 flow [2021-03-25 07:54:53,683 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 22 transitions, 62 flow [2021-03-25 07:54:53,691 INFO L129 PetriNetUnfolder]: 1/22 cut-off events. [2021-03-25 07:54:53,691 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 07:54:53,691 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 22 events. 1/22 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 18 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 9. Up to 3 conditions per place. [2021-03-25 07:54:53,693 INFO L142 LiptonReduction]: Number of co-enabled transitions 140 [2021-03-25 07:54:53,734 INFO L154 LiptonReduction]: Checked pairs total: 354 [2021-03-25 07:54:53,734 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 07:54:53,743 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 72 [2021-03-25 07:54:53,757 INFO L129 PetriNetUnfolder]: 1/19 cut-off events. [2021-03-25 07:54:53,757 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 07:54:53,757 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:53,758 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:53,758 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:54:53,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:53,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1717627251, now seen corresponding path program 1 times [2021-03-25 07:54:53,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:53,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753763720] [2021-03-25 07:54:53,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:53,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:53,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:53,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:53,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:53,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:53,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:53,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:53,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:53,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:53,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:53,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:53,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:53,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:53,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:53,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:53,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:53,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:53,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:53,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:53,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:53,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:53,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:53,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:53,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:53,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:53,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:54,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:54,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753763720] [2021-03-25 07:54:54,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:54,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-03-25 07:54:54,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137439896] [2021-03-25 07:54:54,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-25 07:54:54,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:54,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-25 07:54:54,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-03-25 07:54:54,039 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 28 [2021-03-25 07:54:54,041 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 58 flow. Second operand has 15 states, 15 states have (on average 10.066666666666666) internal successors, (151), 15 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:54,041 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:54,042 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 28 [2021-03-25 07:54:54,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:54,509 INFO L129 PetriNetUnfolder]: 79/236 cut-off events. [2021-03-25 07:54:54,510 INFO L130 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2021-03-25 07:54:54,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 236 events. 79/236 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1080 event pairs, 25 based on Foata normal form. 4/240 useless extension candidates. Maximal degree in co-relation 428. Up to 81 conditions per place. [2021-03-25 07:54:54,516 INFO L132 encePairwiseOnDemand]: 14/28 looper letters, 41 selfloop transitions, 27 changer transitions 14/86 dead transitions. [2021-03-25 07:54:54,516 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 86 transitions, 357 flow [2021-03-25 07:54:54,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-25 07:54:54,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-03-25 07:54:54,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 248 transitions. [2021-03-25 07:54:54,531 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2021-03-25 07:54:54,532 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 248 transitions. [2021-03-25 07:54:54,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 248 transitions. [2021-03-25 07:54:54,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:54,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 248 transitions. [2021-03-25 07:54:54,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 13.777777777777779) internal successors, (248), 18 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:54,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 28.0) internal successors, (532), 19 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:54,556 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 28.0) internal successors, (532), 19 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:54,557 INFO L185 Difference]: Start difference. First operand has 25 places, 20 transitions, 58 flow. Second operand 18 states and 248 transitions. [2021-03-25 07:54:54,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 86 transitions, 357 flow [2021-03-25 07:54:54,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 86 transitions, 343 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 07:54:54,572 INFO L241 Difference]: Finished difference. Result has 50 places, 48 transitions, 240 flow [2021-03-25 07:54:54,574 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=240, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2021-03-25 07:54:54,575 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 25 predicate places. [2021-03-25 07:54:54,577 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:54,578 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 48 transitions, 240 flow [2021-03-25 07:54:54,579 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 48 transitions, 240 flow [2021-03-25 07:54:54,579 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 48 transitions, 240 flow [2021-03-25 07:54:54,607 INFO L129 PetriNetUnfolder]: 28/123 cut-off events. [2021-03-25 07:54:54,608 INFO L130 PetriNetUnfolder]: For 195/195 co-relation queries the response was YES. [2021-03-25 07:54:54,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 123 events. 28/123 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 554 event pairs, 5 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 324. Up to 28 conditions per place. [2021-03-25 07:54:54,612 INFO L142 LiptonReduction]: Number of co-enabled transitions 138 [2021-03-25 07:54:54,775 INFO L154 LiptonReduction]: Checked pairs total: 843 [2021-03-25 07:54:54,775 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-25 07:54:54,775 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 198 [2021-03-25 07:54:54,776 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 48 transitions, 255 flow [2021-03-25 07:54:54,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 10.066666666666666) internal successors, (151), 15 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:54,777 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:54,777 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:54,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 07:54:54,777 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:54:54,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:54,778 INFO L82 PathProgramCache]: Analyzing trace with hash 515928769, now seen corresponding path program 2 times [2021-03-25 07:54:54,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:54,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140282425] [2021-03-25 07:54:54,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:54,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:54,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:54,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:54,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:54,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:54,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:54,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:54,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:54,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:54,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:54,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:54,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:54,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:54,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:54,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:54,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:54,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:54,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:54,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:54,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140282425] [2021-03-25 07:54:54,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:54,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-25 07:54:54,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697801621] [2021-03-25 07:54:54,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 07:54:54,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:54,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 07:54:54,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-03-25 07:54:54,861 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2021-03-25 07:54:54,861 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 48 transitions, 255 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:54,861 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:54,861 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2021-03-25 07:54:54,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:55,351 INFO L129 PetriNetUnfolder]: 122/417 cut-off events. [2021-03-25 07:54:55,355 INFO L130 PetriNetUnfolder]: For 1494/1494 co-relation queries the response was YES. [2021-03-25 07:54:55,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1604 conditions, 417 events. 122/417 cut-off events. For 1494/1494 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2699 event pairs, 7 based on Foata normal form. 2/419 useless extension candidates. Maximal degree in co-relation 1541. Up to 134 conditions per place. [2021-03-25 07:54:55,359 INFO L132 encePairwiseOnDemand]: 14/36 looper letters, 68 selfloop transitions, 68 changer transitions 8/148 dead transitions. [2021-03-25 07:54:55,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 148 transitions, 1209 flow [2021-03-25 07:54:55,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-03-25 07:54:55,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-03-25 07:54:55,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 302 transitions. [2021-03-25 07:54:55,368 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3994708994708995 [2021-03-25 07:54:55,368 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 302 transitions. [2021-03-25 07:54:55,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 302 transitions. [2021-03-25 07:54:55,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:55,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 302 transitions. [2021-03-25 07:54:55,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 14.380952380952381) internal successors, (302), 21 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:55,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 36.0) internal successors, (792), 22 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:55,377 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 36.0) internal successors, (792), 22 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:55,377 INFO L185 Difference]: Start difference. First operand has 44 places, 48 transitions, 255 flow. Second operand 21 states and 302 transitions. [2021-03-25 07:54:55,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 148 transitions, 1209 flow [2021-03-25 07:54:55,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 148 transitions, 1039 flow, removed 85 selfloop flow, removed 6 redundant places. [2021-03-25 07:54:55,391 INFO L241 Difference]: Finished difference. Result has 72 places, 104 transitions, 851 flow [2021-03-25 07:54:55,391 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=851, PETRI_PLACES=72, PETRI_TRANSITIONS=104} [2021-03-25 07:54:55,392 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 47 predicate places. [2021-03-25 07:54:55,392 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:55,392 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 104 transitions, 851 flow [2021-03-25 07:54:55,392 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 104 transitions, 851 flow [2021-03-25 07:54:55,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 104 transitions, 851 flow [2021-03-25 07:54:55,419 INFO L129 PetriNetUnfolder]: 60/303 cut-off events. [2021-03-25 07:54:55,419 INFO L130 PetriNetUnfolder]: For 1283/1296 co-relation queries the response was YES. [2021-03-25 07:54:55,420 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1204 conditions, 303 events. 60/303 cut-off events. For 1283/1296 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2138 event pairs, 0 based on Foata normal form. 7/305 useless extension candidates. Maximal degree in co-relation 1068. Up to 85 conditions per place. [2021-03-25 07:54:55,423 INFO L142 LiptonReduction]: Number of co-enabled transitions 214 [2021-03-25 07:54:55,531 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-25 07:54:55,531 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 07:54:55,531 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 139 [2021-03-25 07:54:55,532 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 102 transitions, 848 flow [2021-03-25 07:54:55,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:55,532 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:55,532 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:55,532 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 07:54:55,532 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:54:55,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:55,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1292040641, now seen corresponding path program 1 times [2021-03-25 07:54:55,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:55,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557123443] [2021-03-25 07:54:55,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:55,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:55,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:54:55,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:55,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:55,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:55,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:54:55,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:55,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557123443] [2021-03-25 07:54:55,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:55,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 07:54:55,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173586170] [2021-03-25 07:54:55,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 07:54:55,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:55,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 07:54:55,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 07:54:55,571 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 39 [2021-03-25 07:54:55,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 102 transitions, 848 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:55,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:55,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 39 [2021-03-25 07:54:55,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:55,605 INFO L129 PetriNetUnfolder]: 46/267 cut-off events. [2021-03-25 07:54:55,605 INFO L130 PetriNetUnfolder]: For 1329/1342 co-relation queries the response was YES. [2021-03-25 07:54:55,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1181 conditions, 267 events. 46/267 cut-off events. For 1329/1342 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1780 event pairs, 0 based on Foata normal form. 29/291 useless extension candidates. Maximal degree in co-relation 1091. Up to 81 conditions per place. [2021-03-25 07:54:55,607 INFO L132 encePairwiseOnDemand]: 37/39 looper letters, 1 selfloop transitions, 1 changer transitions 0/100 dead transitions. [2021-03-25 07:54:55,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 100 transitions, 846 flow [2021-03-25 07:54:55,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 07:54:55,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 07:54:55,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2021-03-25 07:54:55,616 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2021-03-25 07:54:55,616 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 111 transitions. [2021-03-25 07:54:55,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 111 transitions. [2021-03-25 07:54:55,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:55,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 111 transitions. [2021-03-25 07:54:55,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:55,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:55,618 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:55,618 INFO L185 Difference]: Start difference. First operand has 71 places, 102 transitions, 848 flow. Second operand 3 states and 111 transitions. [2021-03-25 07:54:55,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 100 transitions, 846 flow [2021-03-25 07:54:55,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 100 transitions, 770 flow, removed 34 selfloop flow, removed 1 redundant places. [2021-03-25 07:54:55,634 INFO L241 Difference]: Finished difference. Result has 72 places, 100 transitions, 768 flow [2021-03-25 07:54:55,635 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=768, PETRI_PLACES=72, PETRI_TRANSITIONS=100} [2021-03-25 07:54:55,635 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 47 predicate places. [2021-03-25 07:54:55,635 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:55,635 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 100 transitions, 768 flow [2021-03-25 07:54:55,636 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 100 transitions, 768 flow [2021-03-25 07:54:55,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 100 transitions, 768 flow [2021-03-25 07:54:55,659 INFO L129 PetriNetUnfolder]: 45/265 cut-off events. [2021-03-25 07:54:55,660 INFO L130 PetriNetUnfolder]: For 1196/1209 co-relation queries the response was YES. [2021-03-25 07:54:55,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1111 conditions, 265 events. 45/265 cut-off events. For 1196/1209 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1807 event pairs, 0 based on Foata normal form. 7/267 useless extension candidates. Maximal degree in co-relation 1080. Up to 75 conditions per place. [2021-03-25 07:54:55,662 INFO L142 LiptonReduction]: Number of co-enabled transitions 184 [2021-03-25 07:54:55,675 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:54:55,675 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:54:55,675 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 40 [2021-03-25 07:54:55,676 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 100 transitions, 768 flow [2021-03-25 07:54:55,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:55,677 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:55,677 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:55,677 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 07:54:55,677 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:54:55,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:55,677 INFO L82 PathProgramCache]: Analyzing trace with hash -2129733205, now seen corresponding path program 1 times [2021-03-25 07:54:55,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:55,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534265163] [2021-03-25 07:54:55,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:55,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:55,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:55,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:55,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:55,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:55,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:55,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:55,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:55,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:55,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:55,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:55,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:55,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:55,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:55,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:55,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534265163] [2021-03-25 07:54:55,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:55,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 07:54:55,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434165487] [2021-03-25 07:54:55,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 07:54:55,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:55,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 07:54:55,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-03-25 07:54:55,762 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2021-03-25 07:54:55,762 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 100 transitions, 768 flow. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:55,762 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:55,763 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2021-03-25 07:54:55,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:55,934 INFO L129 PetriNetUnfolder]: 101/406 cut-off events. [2021-03-25 07:54:55,934 INFO L130 PetriNetUnfolder]: For 2133/2146 co-relation queries the response was YES. [2021-03-25 07:54:55,935 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2019 conditions, 406 events. 101/406 cut-off events. For 2133/2146 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2785 event pairs, 26 based on Foata normal form. 3/408 useless extension candidates. Maximal degree in co-relation 1985. Up to 285 conditions per place. [2021-03-25 07:54:55,937 INFO L132 encePairwiseOnDemand]: 26/39 looper letters, 93 selfloop transitions, 26 changer transitions 16/138 dead transitions. [2021-03-25 07:54:55,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 138 transitions, 1343 flow [2021-03-25 07:54:55,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 07:54:55,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 07:54:55,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2021-03-25 07:54:55,938 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.38694638694638694 [2021-03-25 07:54:55,939 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 166 transitions. [2021-03-25 07:54:55,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 166 transitions. [2021-03-25 07:54:55,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:55,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 166 transitions. [2021-03-25 07:54:55,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 15.090909090909092) internal successors, (166), 11 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:55,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 39.0) internal successors, (468), 12 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:55,943 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 39.0) internal successors, (468), 12 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:55,943 INFO L185 Difference]: Start difference. First operand has 72 places, 100 transitions, 768 flow. Second operand 11 states and 166 transitions. [2021-03-25 07:54:55,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 138 transitions, 1343 flow [2021-03-25 07:54:55,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 138 transitions, 1342 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 07:54:55,957 INFO L241 Difference]: Finished difference. Result has 89 places, 114 transitions, 1023 flow [2021-03-25 07:54:55,957 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1023, PETRI_PLACES=89, PETRI_TRANSITIONS=114} [2021-03-25 07:54:55,957 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 64 predicate places. [2021-03-25 07:54:55,957 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:55,957 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 114 transitions, 1023 flow [2021-03-25 07:54:55,958 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 114 transitions, 1023 flow [2021-03-25 07:54:55,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 114 transitions, 1023 flow [2021-03-25 07:54:55,982 INFO L129 PetriNetUnfolder]: 46/281 cut-off events. [2021-03-25 07:54:55,982 INFO L130 PetriNetUnfolder]: For 1775/1791 co-relation queries the response was YES. [2021-03-25 07:54:55,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1348 conditions, 281 events. 46/281 cut-off events. For 1775/1791 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1981 event pairs, 0 based on Foata normal form. 7/281 useless extension candidates. Maximal degree in co-relation 1308. Up to 82 conditions per place. [2021-03-25 07:54:55,985 INFO L142 LiptonReduction]: Number of co-enabled transitions 188 [2021-03-25 07:54:56,063 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-25 07:54:56,063 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 07:54:56,063 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 106 [2021-03-25 07:54:56,064 INFO L480 AbstractCegarLoop]: Abstraction has has 88 places, 113 transitions, 1037 flow [2021-03-25 07:54:56,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:56,064 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:56,064 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:56,065 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 07:54:56,065 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:54:56,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:56,065 INFO L82 PathProgramCache]: Analyzing trace with hash -311435340, now seen corresponding path program 1 times [2021-03-25 07:54:56,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:56,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627541864] [2021-03-25 07:54:56,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:56,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:56,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:56,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:56,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:56,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 07:54:56,122 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 07:54:56,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 07:54:56,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:56,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:56,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:56,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:56,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:56,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:56,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:56,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:56,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:56,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:56,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:56,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:56,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:56,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627541864] [2021-03-25 07:54:56,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:56,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-25 07:54:56,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384481880] [2021-03-25 07:54:56,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 07:54:56,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:56,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 07:54:56,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-03-25 07:54:56,188 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2021-03-25 07:54:56,188 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 113 transitions, 1037 flow. Second operand has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:56,188 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:56,188 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2021-03-25 07:54:56,188 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:56,402 INFO L129 PetriNetUnfolder]: 101/387 cut-off events. [2021-03-25 07:54:56,402 INFO L130 PetriNetUnfolder]: For 2818/2818 co-relation queries the response was YES. [2021-03-25 07:54:56,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2196 conditions, 387 events. 101/387 cut-off events. For 2818/2818 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2511 event pairs, 30 based on Foata normal form. 1/388 useless extension candidates. Maximal degree in co-relation 2095. Up to 295 conditions per place. [2021-03-25 07:54:56,407 INFO L132 encePairwiseOnDemand]: 31/42 looper letters, 97 selfloop transitions, 16 changer transitions 9/124 dead transitions. [2021-03-25 07:54:56,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 124 transitions, 1402 flow [2021-03-25 07:54:56,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 07:54:56,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 07:54:56,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2021-03-25 07:54:56,408 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.32857142857142857 [2021-03-25 07:54:56,408 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 138 transitions. [2021-03-25 07:54:56,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 138 transitions. [2021-03-25 07:54:56,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:56,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 138 transitions. [2021-03-25 07:54:56,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 13.8) internal successors, (138), 10 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) [2021-03-25 07:54:56,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 42.0) internal successors, (462), 11 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:56,410 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 42.0) internal successors, (462), 11 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:56,410 INFO L185 Difference]: Start difference. First operand has 88 places, 113 transitions, 1037 flow. Second operand 10 states and 138 transitions. [2021-03-25 07:54:56,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 124 transitions, 1402 flow [2021-03-25 07:54:56,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 124 transitions, 1314 flow, removed 42 selfloop flow, removed 2 redundant places. [2021-03-25 07:54:56,427 INFO L241 Difference]: Finished difference. Result has 100 places, 110 transitions, 986 flow [2021-03-25 07:54:56,428 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=986, PETRI_PLACES=100, PETRI_TRANSITIONS=110} [2021-03-25 07:54:56,428 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 75 predicate places. [2021-03-25 07:54:56,428 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:56,428 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 110 transitions, 986 flow [2021-03-25 07:54:56,428 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 110 transitions, 986 flow [2021-03-25 07:54:56,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 110 transitions, 986 flow [2021-03-25 07:54:56,454 INFO L129 PetriNetUnfolder]: 45/280 cut-off events. [2021-03-25 07:54:56,454 INFO L130 PetriNetUnfolder]: For 1933/1948 co-relation queries the response was YES. [2021-03-25 07:54:56,456 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1380 conditions, 280 events. 45/280 cut-off events. For 1933/1948 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1967 event pairs, 0 based on Foata normal form. 8/282 useless extension candidates. Maximal degree in co-relation 1341. Up to 77 conditions per place. [2021-03-25 07:54:56,458 INFO L142 LiptonReduction]: Number of co-enabled transitions 184 [2021-03-25 07:54:56,462 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:54:56,462 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:54:56,462 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 34 [2021-03-25 07:54:56,463 INFO L480 AbstractCegarLoop]: Abstraction has has 92 places, 110 transitions, 986 flow [2021-03-25 07:54:56,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:56,463 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:56,463 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:56,463 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 07:54:56,463 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:54:56,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:56,464 INFO L82 PathProgramCache]: Analyzing trace with hash -499389242, now seen corresponding path program 1 times [2021-03-25 07:54:56,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:56,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851210604] [2021-03-25 07:54:56,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:56,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:56,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:56,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:56,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:56,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:56,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:56,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:56,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:56,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:56,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:56,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:56,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:56,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:56,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851210604] [2021-03-25 07:54:56,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:56,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 07:54:56,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029032735] [2021-03-25 07:54:56,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 07:54:56,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:56,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 07:54:56,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-25 07:54:56,534 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2021-03-25 07:54:56,535 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 110 transitions, 986 flow. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:56,535 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:56,535 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2021-03-25 07:54:56,535 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:56,667 INFO L129 PetriNetUnfolder]: 100/380 cut-off events. [2021-03-25 07:54:56,667 INFO L130 PetriNetUnfolder]: For 3009/3009 co-relation queries the response was YES. [2021-03-25 07:54:56,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2202 conditions, 380 events. 100/380 cut-off events. For 3009/3009 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2455 event pairs, 29 based on Foata normal form. 1/381 useless extension candidates. Maximal degree in co-relation 2161. Up to 295 conditions per place. [2021-03-25 07:54:56,671 INFO L132 encePairwiseOnDemand]: 32/42 looper letters, 93 selfloop transitions, 19 changer transitions 3/118 dead transitions. [2021-03-25 07:54:56,671 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 118 transitions, 1281 flow [2021-03-25 07:54:56,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 07:54:56,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 07:54:56,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2021-03-25 07:54:56,672 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.37797619047619047 [2021-03-25 07:54:56,672 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 127 transitions. [2021-03-25 07:54:56,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 127 transitions. [2021-03-25 07:54:56,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:56,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 127 transitions. [2021-03-25 07:54:56,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:56,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 42.0) internal successors, (378), 9 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:56,674 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 42.0) internal successors, (378), 9 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:56,674 INFO L185 Difference]: Start difference. First operand has 92 places, 110 transitions, 986 flow. Second operand 8 states and 127 transitions. [2021-03-25 07:54:56,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 118 transitions, 1281 flow [2021-03-25 07:54:56,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 118 transitions, 1244 flow, removed 8 selfloop flow, removed 8 redundant places. [2021-03-25 07:54:56,690 INFO L241 Difference]: Finished difference. Result has 93 places, 110 transitions, 996 flow [2021-03-25 07:54:56,690 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=996, PETRI_PLACES=93, PETRI_TRANSITIONS=110} [2021-03-25 07:54:56,691 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 68 predicate places. [2021-03-25 07:54:56,691 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:56,691 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 110 transitions, 996 flow [2021-03-25 07:54:56,691 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 110 transitions, 996 flow [2021-03-25 07:54:56,692 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 110 transitions, 996 flow [2021-03-25 07:54:56,715 INFO L129 PetriNetUnfolder]: 45/277 cut-off events. [2021-03-25 07:54:56,715 INFO L130 PetriNetUnfolder]: For 1714/1730 co-relation queries the response was YES. [2021-03-25 07:54:56,716 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 277 events. 45/277 cut-off events. For 1714/1730 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1946 event pairs, 0 based on Foata normal form. 7/276 useless extension candidates. Maximal degree in co-relation 1260. Up to 75 conditions per place. [2021-03-25 07:54:56,718 INFO L142 LiptonReduction]: Number of co-enabled transitions 182 [2021-03-25 07:54:56,722 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:54:56,722 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:54:56,722 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 31 [2021-03-25 07:54:56,723 INFO L480 AbstractCegarLoop]: Abstraction has has 91 places, 110 transitions, 996 flow [2021-03-25 07:54:56,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:56,723 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:56,723 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:56,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 07:54:56,723 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:54:56,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:56,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1192029992, now seen corresponding path program 2 times [2021-03-25 07:54:56,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:56,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007368358] [2021-03-25 07:54:56,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:56,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:56,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:56,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:56,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:56,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:56,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:56,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:56,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:56,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:56,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:56,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:56,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007368358] [2021-03-25 07:54:56,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:56,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 07:54:56,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811376717] [2021-03-25 07:54:56,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 07:54:56,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:56,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 07:54:56,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-25 07:54:56,756 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2021-03-25 07:54:56,756 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 110 transitions, 996 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:56,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:56,756 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2021-03-25 07:54:56,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:56,906 INFO L129 PetriNetUnfolder]: 99/378 cut-off events. [2021-03-25 07:54:56,906 INFO L130 PetriNetUnfolder]: For 2599/2599 co-relation queries the response was YES. [2021-03-25 07:54:56,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2100 conditions, 378 events. 99/378 cut-off events. For 2599/2599 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2414 event pairs, 30 based on Foata normal form. 1/379 useless extension candidates. Maximal degree in co-relation 2022. Up to 290 conditions per place. [2021-03-25 07:54:56,910 INFO L132 encePairwiseOnDemand]: 31/42 looper letters, 94 selfloop transitions, 19 changer transitions 3/119 dead transitions. [2021-03-25 07:54:56,910 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 119 transitions, 1299 flow [2021-03-25 07:54:56,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 07:54:56,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 07:54:56,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2021-03-25 07:54:56,911 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2021-03-25 07:54:56,911 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 138 transitions. [2021-03-25 07:54:56,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 138 transitions. [2021-03-25 07:54:56,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:56,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 138 transitions. [2021-03-25 07:54:56,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 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) [2021-03-25 07:54:56,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 42.0) internal successors, (420), 10 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:56,913 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 42.0) internal successors, (420), 10 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:56,913 INFO L185 Difference]: Start difference. First operand has 91 places, 110 transitions, 996 flow. Second operand 9 states and 138 transitions. [2021-03-25 07:54:56,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 119 transitions, 1299 flow [2021-03-25 07:54:56,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 119 transitions, 1238 flow, removed 3 selfloop flow, removed 7 redundant places. [2021-03-25 07:54:56,927 INFO L241 Difference]: Finished difference. Result has 94 places, 110 transitions, 989 flow [2021-03-25 07:54:56,927 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=989, PETRI_PLACES=94, PETRI_TRANSITIONS=110} [2021-03-25 07:54:56,928 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 69 predicate places. [2021-03-25 07:54:56,928 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:56,928 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 110 transitions, 989 flow [2021-03-25 07:54:56,929 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 110 transitions, 989 flow [2021-03-25 07:54:56,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 110 transitions, 989 flow [2021-03-25 07:54:56,952 INFO L129 PetriNetUnfolder]: 44/274 cut-off events. [2021-03-25 07:54:56,953 INFO L130 PetriNetUnfolder]: For 1660/1676 co-relation queries the response was YES. [2021-03-25 07:54:56,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1297 conditions, 274 events. 44/274 cut-off events. For 1660/1676 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1917 event pairs, 1 based on Foata normal form. 7/274 useless extension candidates. Maximal degree in co-relation 1256. Up to 76 conditions per place. [2021-03-25 07:54:56,956 INFO L142 LiptonReduction]: Number of co-enabled transitions 180 [2021-03-25 07:54:56,980 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:54:56,981 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 07:54:56,981 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 53 [2021-03-25 07:54:56,981 INFO L480 AbstractCegarLoop]: Abstraction has has 90 places, 109 transitions, 983 flow [2021-03-25 07:54:56,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:56,982 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:56,982 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:56,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 07:54:56,982 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:54:56,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:56,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1312139756, now seen corresponding path program 1 times [2021-03-25 07:54:56,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:56,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690189825] [2021-03-25 07:54:56,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:56,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:56,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:56,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:56,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:56,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:57,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:57,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:57,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:57,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:57,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:57,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:57,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:57,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:57,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:57,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:57,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690189825] [2021-03-25 07:54:57,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:57,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 07:54:57,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241319920] [2021-03-25 07:54:57,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 07:54:57,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:57,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 07:54:57,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-03-25 07:54:57,029 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2021-03-25 07:54:57,029 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 109 transitions, 983 flow. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:57,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:57,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2021-03-25 07:54:57,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:57,179 INFO L129 PetriNetUnfolder]: 99/370 cut-off events. [2021-03-25 07:54:57,179 INFO L130 PetriNetUnfolder]: For 2520/2520 co-relation queries the response was YES. [2021-03-25 07:54:57,181 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2079 conditions, 370 events. 99/370 cut-off events. For 2520/2520 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2336 event pairs, 30 based on Foata normal form. 1/371 useless extension candidates. Maximal degree in co-relation 1964. Up to 290 conditions per place. [2021-03-25 07:54:57,183 INFO L132 encePairwiseOnDemand]: 32/43 looper letters, 93 selfloop transitions, 15 changer transitions 4/114 dead transitions. [2021-03-25 07:54:57,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 114 transitions, 1239 flow [2021-03-25 07:54:57,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 07:54:57,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 07:54:57,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2021-03-25 07:54:57,184 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3372093023255814 [2021-03-25 07:54:57,184 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 116 transitions. [2021-03-25 07:54:57,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 116 transitions. [2021-03-25 07:54:57,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:57,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 116 transitions. [2021-03-25 07:54:57,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:57,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 43.0) internal successors, (387), 9 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:57,185 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 43.0) internal successors, (387), 9 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:57,186 INFO L185 Difference]: Start difference. First operand has 90 places, 109 transitions, 983 flow. Second operand 8 states and 116 transitions. [2021-03-25 07:54:57,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 114 transitions, 1239 flow [2021-03-25 07:54:57,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 114 transitions, 1192 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-25 07:54:57,198 INFO L241 Difference]: Finished difference. Result has 94 places, 106 transitions, 933 flow [2021-03-25 07:54:57,198 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=933, PETRI_PLACES=94, PETRI_TRANSITIONS=106} [2021-03-25 07:54:57,198 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 69 predicate places. [2021-03-25 07:54:57,198 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:57,198 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 106 transitions, 933 flow [2021-03-25 07:54:57,198 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 106 transitions, 933 flow [2021-03-25 07:54:57,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 106 transitions, 933 flow [2021-03-25 07:54:57,220 INFO L129 PetriNetUnfolder]: 44/266 cut-off events. [2021-03-25 07:54:57,220 INFO L130 PetriNetUnfolder]: For 1618/1636 co-relation queries the response was YES. [2021-03-25 07:54:57,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1259 conditions, 266 events. 44/266 cut-off events. For 1618/1636 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1831 event pairs, 1 based on Foata normal form. 7/266 useless extension candidates. Maximal degree in co-relation 1217. Up to 74 conditions per place. [2021-03-25 07:54:57,223 INFO L142 LiptonReduction]: Number of co-enabled transitions 180 [2021-03-25 07:54:57,227 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:54:57,227 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:54:57,227 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29 [2021-03-25 07:54:57,228 INFO L480 AbstractCegarLoop]: Abstraction has has 87 places, 106 transitions, 933 flow [2021-03-25 07:54:57,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:57,228 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:57,228 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:57,228 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 07:54:57,228 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:54:57,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:57,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1298784163, now seen corresponding path program 1 times [2021-03-25 07:54:57,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:57,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899974205] [2021-03-25 07:54:57,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:57,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:57,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:57,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:57,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:57,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:57,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:57,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:57,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:57,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:57,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:57,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:57,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:57,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:57,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:57,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:57,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899974205] [2021-03-25 07:54:57,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:57,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 07:54:57,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682888108] [2021-03-25 07:54:57,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 07:54:57,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:57,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 07:54:57,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-03-25 07:54:57,275 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2021-03-25 07:54:57,275 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 106 transitions, 933 flow. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:57,275 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:57,276 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2021-03-25 07:54:57,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:57,425 INFO L129 PetriNetUnfolder]: 98/371 cut-off events. [2021-03-25 07:54:57,425 INFO L130 PetriNetUnfolder]: For 2515/2515 co-relation queries the response was YES. [2021-03-25 07:54:57,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2075 conditions, 371 events. 98/371 cut-off events. For 2515/2515 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2349 event pairs, 31 based on Foata normal form. 1/372 useless extension candidates. Maximal degree in co-relation 2031. Up to 286 conditions per place. [2021-03-25 07:54:57,429 INFO L132 encePairwiseOnDemand]: 30/43 looper letters, 88 selfloop transitions, 12 changer transitions 13/115 dead transitions. [2021-03-25 07:54:57,429 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 115 transitions, 1239 flow [2021-03-25 07:54:57,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 07:54:57,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 07:54:57,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2021-03-25 07:54:57,430 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3186046511627907 [2021-03-25 07:54:57,430 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 137 transitions. [2021-03-25 07:54:57,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 137 transitions. [2021-03-25 07:54:57,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:57,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 137 transitions. [2021-03-25 07:54:57,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 13.7) internal successors, (137), 10 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) [2021-03-25 07:54:57,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 43.0) internal successors, (473), 11 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:57,432 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 43.0) internal successors, (473), 11 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:57,432 INFO L185 Difference]: Start difference. First operand has 87 places, 106 transitions, 933 flow. Second operand 10 states and 137 transitions. [2021-03-25 07:54:57,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 115 transitions, 1239 flow [2021-03-25 07:54:57,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 115 transitions, 1201 flow, removed 4 selfloop flow, removed 7 redundant places. [2021-03-25 07:54:57,445 INFO L241 Difference]: Finished difference. Result has 92 places, 98 transitions, 857 flow [2021-03-25 07:54:57,445 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=857, PETRI_PLACES=92, PETRI_TRANSITIONS=98} [2021-03-25 07:54:57,446 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 67 predicate places. [2021-03-25 07:54:57,446 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:57,446 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 98 transitions, 857 flow [2021-03-25 07:54:57,446 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 98 transitions, 857 flow [2021-03-25 07:54:57,447 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 98 transitions, 857 flow [2021-03-25 07:54:57,466 INFO L129 PetriNetUnfolder]: 43/260 cut-off events. [2021-03-25 07:54:57,466 INFO L130 PetriNetUnfolder]: For 1637/1654 co-relation queries the response was YES. [2021-03-25 07:54:57,467 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1233 conditions, 260 events. 43/260 cut-off events. For 1637/1654 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1782 event pairs, 2 based on Foata normal form. 7/261 useless extension candidates. Maximal degree in co-relation 1192. Up to 75 conditions per place. [2021-03-25 07:54:57,469 INFO L142 LiptonReduction]: Number of co-enabled transitions 180 [2021-03-25 07:54:57,508 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 07:54:57,508 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 07:54:57,508 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 62 [2021-03-25 07:54:57,509 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 98 transitions, 861 flow [2021-03-25 07:54:57,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:57,509 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:57,509 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:57,509 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 07:54:57,509 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:54:57,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:57,510 INFO L82 PathProgramCache]: Analyzing trace with hash 507451181, now seen corresponding path program 1 times [2021-03-25 07:54:57,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:57,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069290830] [2021-03-25 07:54:57,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:57,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:57,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:57,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:57,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:57,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:57,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:57,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:57,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:57,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:57,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:57,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:57,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:57,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:57,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:57,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:57,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069290830] [2021-03-25 07:54:57,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:57,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 07:54:57,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605895101] [2021-03-25 07:54:57,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 07:54:57,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:57,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 07:54:57,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-03-25 07:54:57,561 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2021-03-25 07:54:57,561 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 98 transitions, 861 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:57,561 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:57,561 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2021-03-25 07:54:57,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:57,720 INFO L129 PetriNetUnfolder]: 109/448 cut-off events. [2021-03-25 07:54:57,720 INFO L130 PetriNetUnfolder]: For 3227/3236 co-relation queries the response was YES. [2021-03-25 07:54:57,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2495 conditions, 448 events. 109/448 cut-off events. For 3227/3236 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3232 event pairs, 22 based on Foata normal form. 9/456 useless extension candidates. Maximal degree in co-relation 2451. Up to 273 conditions per place. [2021-03-25 07:54:57,724 INFO L132 encePairwiseOnDemand]: 28/44 looper letters, 93 selfloop transitions, 41 changer transitions 22/159 dead transitions. [2021-03-25 07:54:57,724 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 159 transitions, 1742 flow [2021-03-25 07:54:57,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 07:54:57,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 07:54:57,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2021-03-25 07:54:57,725 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2021-03-25 07:54:57,725 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 172 transitions. [2021-03-25 07:54:57,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 172 transitions. [2021-03-25 07:54:57,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:57,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 172 transitions. [2021-03-25 07:54:57,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 15.636363636363637) internal successors, (172), 11 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:57,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 44.0) internal successors, (528), 12 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:57,727 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 44.0) internal successors, (528), 12 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:57,727 INFO L185 Difference]: Start difference. First operand has 79 places, 98 transitions, 861 flow. Second operand 11 states and 172 transitions. [2021-03-25 07:54:57,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 159 transitions, 1742 flow [2021-03-25 07:54:57,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 159 transitions, 1662 flow, removed 26 selfloop flow, removed 9 redundant places. [2021-03-25 07:54:57,742 INFO L241 Difference]: Finished difference. Result has 86 places, 118 transitions, 1182 flow [2021-03-25 07:54:57,743 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1182, PETRI_PLACES=86, PETRI_TRANSITIONS=118} [2021-03-25 07:54:57,743 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 61 predicate places. [2021-03-25 07:54:57,743 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:57,743 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 118 transitions, 1182 flow [2021-03-25 07:54:57,743 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 118 transitions, 1182 flow [2021-03-25 07:54:57,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 118 transitions, 1182 flow [2021-03-25 07:54:57,770 INFO L129 PetriNetUnfolder]: 48/319 cut-off events. [2021-03-25 07:54:57,770 INFO L130 PetriNetUnfolder]: For 2439/2459 co-relation queries the response was YES. [2021-03-25 07:54:57,771 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1643 conditions, 319 events. 48/319 cut-off events. For 2439/2459 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2440 event pairs, 2 based on Foata normal form. 12/326 useless extension candidates. Maximal degree in co-relation 1603. Up to 96 conditions per place. [2021-03-25 07:54:57,773 INFO L142 LiptonReduction]: Number of co-enabled transitions 186 [2021-03-25 07:54:57,850 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 07:54:57,850 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 07:54:57,850 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 107 [2021-03-25 07:54:57,851 INFO L480 AbstractCegarLoop]: Abstraction has has 86 places, 118 transitions, 1209 flow [2021-03-25 07:54:57,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:57,851 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:57,851 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:57,851 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 07:54:57,851 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:54:57,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:57,852 INFO L82 PathProgramCache]: Analyzing trace with hash 510076957, now seen corresponding path program 2 times [2021-03-25 07:54:57,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:57,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554834518] [2021-03-25 07:54:57,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:57,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:57,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:57,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:57,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:57,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:57,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:57,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:57,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:57,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:57,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:57,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:57,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:57,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:57,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:57,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:57,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554834518] [2021-03-25 07:54:57,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:57,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 07:54:57,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015866557] [2021-03-25 07:54:57,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 07:54:57,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:57,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 07:54:57,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-25 07:54:57,902 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2021-03-25 07:54:57,902 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 118 transitions, 1209 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:57,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:57,902 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2021-03-25 07:54:57,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:58,175 INFO L129 PetriNetUnfolder]: 103/460 cut-off events. [2021-03-25 07:54:58,175 INFO L130 PetriNetUnfolder]: For 3941/3941 co-relation queries the response was YES. [2021-03-25 07:54:58,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2718 conditions, 460 events. 103/460 cut-off events. For 3941/3941 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3358 event pairs, 28 based on Foata normal form. 5/465 useless extension candidates. Maximal degree in co-relation 2534. Up to 279 conditions per place. [2021-03-25 07:54:58,179 INFO L132 encePairwiseOnDemand]: 35/48 looper letters, 103 selfloop transitions, 35 changer transitions 25/165 dead transitions. [2021-03-25 07:54:58,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 165 transitions, 2112 flow [2021-03-25 07:54:58,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-25 07:54:58,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-25 07:54:58,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 203 transitions. [2021-03-25 07:54:58,181 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3020833333333333 [2021-03-25 07:54:58,181 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 203 transitions. [2021-03-25 07:54:58,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 203 transitions. [2021-03-25 07:54:58,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:58,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 203 transitions. [2021-03-25 07:54:58,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 14.5) internal successors, (203), 14 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:58,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 48.0) internal successors, (720), 15 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:58,183 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 48.0) internal successors, (720), 15 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:58,183 INFO L185 Difference]: Start difference. First operand has 86 places, 118 transitions, 1209 flow. Second operand 14 states and 203 transitions. [2021-03-25 07:54:58,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 165 transitions, 2112 flow [2021-03-25 07:54:58,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 165 transitions, 1860 flow, removed 115 selfloop flow, removed 3 redundant places. [2021-03-25 07:54:58,205 INFO L241 Difference]: Finished difference. Result has 107 places, 126 transitions, 1356 flow [2021-03-25 07:54:58,205 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1111, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1356, PETRI_PLACES=107, PETRI_TRANSITIONS=126} [2021-03-25 07:54:58,205 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 82 predicate places. [2021-03-25 07:54:58,205 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:58,206 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 126 transitions, 1356 flow [2021-03-25 07:54:58,206 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 126 transitions, 1356 flow [2021-03-25 07:54:58,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 106 places, 126 transitions, 1356 flow [2021-03-25 07:54:58,236 INFO L129 PetriNetUnfolder]: 45/317 cut-off events. [2021-03-25 07:54:58,236 INFO L130 PetriNetUnfolder]: For 2760/2782 co-relation queries the response was YES. [2021-03-25 07:54:58,237 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1714 conditions, 317 events. 45/317 cut-off events. For 2760/2782 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2375 event pairs, 3 based on Foata normal form. 12/324 useless extension candidates. Maximal degree in co-relation 1664. Up to 84 conditions per place. [2021-03-25 07:54:58,239 INFO L142 LiptonReduction]: Number of co-enabled transitions 192 [2021-03-25 07:54:58,280 INFO L154 LiptonReduction]: Checked pairs total: 1 [2021-03-25 07:54:58,280 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 07:54:58,280 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 75 [2021-03-25 07:54:58,280 INFO L480 AbstractCegarLoop]: Abstraction has has 105 places, 125 transitions, 1362 flow [2021-03-25 07:54:58,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:58,281 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:58,281 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:58,281 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-25 07:54:58,281 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:54:58,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:58,281 INFO L82 PathProgramCache]: Analyzing trace with hash -857475621, now seen corresponding path program 1 times [2021-03-25 07:54:58,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:58,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271171280] [2021-03-25 07:54:58,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:58,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:58,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:58,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:58,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:58,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:58,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:58,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:58,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:58,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:58,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:58,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:58,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:58,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:58,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:58,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:58,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:58,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:58,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271171280] [2021-03-25 07:54:58,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:58,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 07:54:58,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972987839] [2021-03-25 07:54:58,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 07:54:58,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:58,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 07:54:58,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-03-25 07:54:58,334 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2021-03-25 07:54:58,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 125 transitions, 1362 flow. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:58,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:58,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2021-03-25 07:54:58,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:58,579 INFO L129 PetriNetUnfolder]: 106/455 cut-off events. [2021-03-25 07:54:58,579 INFO L130 PetriNetUnfolder]: For 4540/4540 co-relation queries the response was YES. [2021-03-25 07:54:58,581 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2870 conditions, 455 events. 106/455 cut-off events. For 4540/4540 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3271 event pairs, 32 based on Foata normal form. 1/456 useless extension candidates. Maximal degree in co-relation 2768. Up to 289 conditions per place. [2021-03-25 07:54:58,583 INFO L132 encePairwiseOnDemand]: 26/50 looper letters, 105 selfloop transitions, 46 changer transitions 10/163 dead transitions. [2021-03-25 07:54:58,583 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 163 transitions, 2093 flow [2021-03-25 07:54:58,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-25 07:54:58,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-25 07:54:58,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 179 transitions. [2021-03-25 07:54:58,585 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.29833333333333334 [2021-03-25 07:54:58,585 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 179 transitions. [2021-03-25 07:54:58,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 179 transitions. [2021-03-25 07:54:58,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:58,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 179 transitions. [2021-03-25 07:54:58,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 14.916666666666666) internal successors, (179), 12 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:58,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 50.0) internal successors, (650), 13 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:58,586 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 50.0) internal successors, (650), 13 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:58,587 INFO L185 Difference]: Start difference. First operand has 105 places, 125 transitions, 1362 flow. Second operand 12 states and 179 transitions. [2021-03-25 07:54:58,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 163 transitions, 2093 flow [2021-03-25 07:54:58,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 163 transitions, 1951 flow, removed 55 selfloop flow, removed 6 redundant places. [2021-03-25 07:54:58,613 INFO L241 Difference]: Finished difference. Result has 115 places, 135 transitions, 1497 flow [2021-03-25 07:54:58,614 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1255, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1497, PETRI_PLACES=115, PETRI_TRANSITIONS=135} [2021-03-25 07:54:58,614 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 90 predicate places. [2021-03-25 07:54:58,614 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:58,614 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 135 transitions, 1497 flow [2021-03-25 07:54:58,614 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 135 transitions, 1497 flow [2021-03-25 07:54:58,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 113 places, 135 transitions, 1497 flow [2021-03-25 07:54:58,646 INFO L129 PetriNetUnfolder]: 48/339 cut-off events. [2021-03-25 07:54:58,646 INFO L130 PetriNetUnfolder]: For 2387/2409 co-relation queries the response was YES. [2021-03-25 07:54:58,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1799 conditions, 339 events. 48/339 cut-off events. For 2387/2409 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2645 event pairs, 2 based on Foata normal form. 9/343 useless extension candidates. Maximal degree in co-relation 1748. Up to 93 conditions per place. [2021-03-25 07:54:58,650 INFO L142 LiptonReduction]: Number of co-enabled transitions 196 [2021-03-25 07:54:58,655 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:54:58,656 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:54:58,656 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 42 [2021-03-25 07:54:58,656 INFO L480 AbstractCegarLoop]: Abstraction has has 113 places, 135 transitions, 1497 flow [2021-03-25 07:54:58,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:58,656 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:58,656 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:58,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-25 07:54:58,657 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:54:58,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:58,657 INFO L82 PathProgramCache]: Analyzing trace with hash -2101492988, now seen corresponding path program 1 times [2021-03-25 07:54:58,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:58,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652941411] [2021-03-25 07:54:58,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:58,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:58,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:58,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:58,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:58,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:58,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:58,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:58,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:58,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:58,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:58,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:58,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:58,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:58,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652941411] [2021-03-25 07:54:58,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:58,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 07:54:58,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218904791] [2021-03-25 07:54:58,694 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 07:54:58,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:58,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 07:54:58,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-25 07:54:58,694 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2021-03-25 07:54:58,695 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 135 transitions, 1497 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:58,695 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:58,695 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2021-03-25 07:54:58,695 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:58,873 INFO L129 PetriNetUnfolder]: 102/444 cut-off events. [2021-03-25 07:54:58,873 INFO L130 PetriNetUnfolder]: For 3458/3458 co-relation queries the response was YES. [2021-03-25 07:54:58,875 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2713 conditions, 444 events. 102/444 cut-off events. For 3458/3458 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3210 event pairs, 31 based on Foata normal form. 1/445 useless extension candidates. Maximal degree in co-relation 2636. Up to 346 conditions per place. [2021-03-25 07:54:58,877 INFO L132 encePairwiseOnDemand]: 37/50 looper letters, 114 selfloop transitions, 22 changer transitions 8/146 dead transitions. [2021-03-25 07:54:58,877 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 146 transitions, 1898 flow [2021-03-25 07:54:58,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 07:54:58,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 07:54:58,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2021-03-25 07:54:58,878 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2911111111111111 [2021-03-25 07:54:58,878 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 131 transitions. [2021-03-25 07:54:58,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 131 transitions. [2021-03-25 07:54:58,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:58,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 131 transitions. [2021-03-25 07:54:58,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:58,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:58,880 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:58,880 INFO L185 Difference]: Start difference. First operand has 113 places, 135 transitions, 1497 flow. Second operand 9 states and 131 transitions. [2021-03-25 07:54:58,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 146 transitions, 1898 flow [2021-03-25 07:54:58,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 146 transitions, 1863 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-03-25 07:54:58,904 INFO L241 Difference]: Finished difference. Result has 121 places, 133 transitions, 1483 flow [2021-03-25 07:54:58,904 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1483, PETRI_PLACES=121, PETRI_TRANSITIONS=133} [2021-03-25 07:54:58,904 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 96 predicate places. [2021-03-25 07:54:58,904 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:58,904 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 133 transitions, 1483 flow [2021-03-25 07:54:58,904 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 133 transitions, 1483 flow [2021-03-25 07:54:58,905 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 115 places, 133 transitions, 1483 flow [2021-03-25 07:54:58,934 INFO L129 PetriNetUnfolder]: 47/337 cut-off events. [2021-03-25 07:54:58,935 INFO L130 PetriNetUnfolder]: For 2383/2405 co-relation queries the response was YES. [2021-03-25 07:54:58,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1789 conditions, 337 events. 47/337 cut-off events. For 2383/2405 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2622 event pairs, 2 based on Foata normal form. 9/341 useless extension candidates. Maximal degree in co-relation 1735. Up to 92 conditions per place. [2021-03-25 07:54:58,938 INFO L142 LiptonReduction]: Number of co-enabled transitions 196 [2021-03-25 07:54:58,943 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:54:58,943 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:54:58,944 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 40 [2021-03-25 07:54:58,944 INFO L480 AbstractCegarLoop]: Abstraction has has 115 places, 133 transitions, 1483 flow [2021-03-25 07:54:58,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:58,944 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:58,944 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:58,944 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-25 07:54:58,944 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:54:58,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:58,945 INFO L82 PathProgramCache]: Analyzing trace with hash -782869762, now seen corresponding path program 1 times [2021-03-25 07:54:58,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:58,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589698025] [2021-03-25 07:54:58,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:58,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:58,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:58,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:58,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:58,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:58,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:58,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:58,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:58,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:58,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:58,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:58,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:58,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:58,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:58,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:58,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:58,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:58,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589698025] [2021-03-25 07:54:58,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:58,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 07:54:58,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168985156] [2021-03-25 07:54:59,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 07:54:59,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:59,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 07:54:59,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-03-25 07:54:59,000 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2021-03-25 07:54:59,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 133 transitions, 1483 flow. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:59,001 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:59,001 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2021-03-25 07:54:59,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:59,167 INFO L129 PetriNetUnfolder]: 101/440 cut-off events. [2021-03-25 07:54:59,167 INFO L130 PetriNetUnfolder]: For 3403/3403 co-relation queries the response was YES. [2021-03-25 07:54:59,169 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2674 conditions, 440 events. 101/440 cut-off events. For 3403/3403 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3155 event pairs, 33 based on Foata normal form. 2/442 useless extension candidates. Maximal degree in co-relation 2618. Up to 333 conditions per place. [2021-03-25 07:54:59,171 INFO L132 encePairwiseOnDemand]: 31/50 looper letters, 102 selfloop transitions, 25 changer transitions 17/146 dead transitions. [2021-03-25 07:54:59,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 146 transitions, 1889 flow [2021-03-25 07:54:59,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 07:54:59,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 07:54:59,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2021-03-25 07:54:59,173 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.27454545454545454 [2021-03-25 07:54:59,173 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 151 transitions. [2021-03-25 07:54:59,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 151 transitions. [2021-03-25 07:54:59,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:59,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 151 transitions. [2021-03-25 07:54:59,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 13.727272727272727) internal successors, (151), 11 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:59,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 50.0) internal successors, (600), 12 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:59,174 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 50.0) internal successors, (600), 12 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:59,174 INFO L185 Difference]: Start difference. First operand has 115 places, 133 transitions, 1483 flow. Second operand 11 states and 151 transitions. [2021-03-25 07:54:59,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 146 transitions, 1889 flow [2021-03-25 07:54:59,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 146 transitions, 1854 flow, removed 6 selfloop flow, removed 7 redundant places. [2021-03-25 07:54:59,198 INFO L241 Difference]: Finished difference. Result has 122 places, 125 transitions, 1390 flow [2021-03-25 07:54:59,198 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1390, PETRI_PLACES=122, PETRI_TRANSITIONS=125} [2021-03-25 07:54:59,198 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 97 predicate places. [2021-03-25 07:54:59,198 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:59,198 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 125 transitions, 1390 flow [2021-03-25 07:54:59,199 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 125 transitions, 1390 flow [2021-03-25 07:54:59,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 117 places, 125 transitions, 1390 flow [2021-03-25 07:54:59,227 INFO L129 PetriNetUnfolder]: 44/320 cut-off events. [2021-03-25 07:54:59,228 INFO L130 PetriNetUnfolder]: For 2318/2338 co-relation queries the response was YES. [2021-03-25 07:54:59,229 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1699 conditions, 320 events. 44/320 cut-off events. For 2318/2338 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2423 event pairs, 2 based on Foata normal form. 10/326 useless extension candidates. Maximal degree in co-relation 1646. Up to 84 conditions per place. [2021-03-25 07:54:59,231 INFO L142 LiptonReduction]: Number of co-enabled transitions 194 [2021-03-25 07:54:59,255 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-25 07:54:59,256 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 07:54:59,256 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 58 [2021-03-25 07:54:59,257 INFO L480 AbstractCegarLoop]: Abstraction has has 116 places, 124 transitions, 1386 flow [2021-03-25 07:54:59,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:59,257 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:59,257 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:59,257 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-25 07:54:59,257 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:54:59,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:59,258 INFO L82 PathProgramCache]: Analyzing trace with hash 61037386, now seen corresponding path program 2 times [2021-03-25 07:54:59,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:59,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861092806] [2021-03-25 07:54:59,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:59,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:59,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:59,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:59,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:59,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:59,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:59,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:59,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:59,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:59,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:59,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:59,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:59,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:59,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:59,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:59,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861092806] [2021-03-25 07:54:59,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:59,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 07:54:59,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528283074] [2021-03-25 07:54:59,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 07:54:59,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:59,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 07:54:59,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-25 07:54:59,335 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 51 [2021-03-25 07:54:59,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 124 transitions, 1386 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:59,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:59,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 51 [2021-03-25 07:54:59,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:59,567 INFO L129 PetriNetUnfolder]: 98/408 cut-off events. [2021-03-25 07:54:59,567 INFO L130 PetriNetUnfolder]: For 3371/3371 co-relation queries the response was YES. [2021-03-25 07:54:59,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2518 conditions, 408 events. 98/408 cut-off events. For 3371/3371 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2808 event pairs, 30 based on Foata normal form. 2/410 useless extension candidates. Maximal degree in co-relation 2458. Up to 297 conditions per place. [2021-03-25 07:54:59,571 INFO L132 encePairwiseOnDemand]: 37/51 looper letters, 98 selfloop transitions, 14 changer transitions 23/137 dead transitions. [2021-03-25 07:54:59,571 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 137 transitions, 1770 flow [2021-03-25 07:54:59,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-25 07:54:59,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-25 07:54:59,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 169 transitions. [2021-03-25 07:54:59,572 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2761437908496732 [2021-03-25 07:54:59,572 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 169 transitions. [2021-03-25 07:54:59,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 169 transitions. [2021-03-25 07:54:59,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:59,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 169 transitions. [2021-03-25 07:54:59,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:59,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 51.0) internal successors, (663), 13 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:59,574 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 51.0) internal successors, (663), 13 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:59,574 INFO L185 Difference]: Start difference. First operand has 116 places, 124 transitions, 1386 flow. Second operand 12 states and 169 transitions. [2021-03-25 07:54:59,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 137 transitions, 1770 flow [2021-03-25 07:54:59,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 137 transitions, 1659 flow, removed 23 selfloop flow, removed 10 redundant places. [2021-03-25 07:54:59,597 INFO L241 Difference]: Finished difference. Result has 120 places, 109 transitions, 1124 flow [2021-03-25 07:54:59,597 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1283, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1124, PETRI_PLACES=120, PETRI_TRANSITIONS=109} [2021-03-25 07:54:59,597 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 95 predicate places. [2021-03-25 07:54:59,597 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:59,597 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 109 transitions, 1124 flow [2021-03-25 07:54:59,597 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 109 transitions, 1124 flow [2021-03-25 07:54:59,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 108 places, 109 transitions, 1124 flow [2021-03-25 07:54:59,626 INFO L129 PetriNetUnfolder]: 42/284 cut-off events. [2021-03-25 07:54:59,626 INFO L130 PetriNetUnfolder]: For 2003/2023 co-relation queries the response was YES. [2021-03-25 07:54:59,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1484 conditions, 284 events. 42/284 cut-off events. For 2003/2023 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2036 event pairs, 2 based on Foata normal form. 7/286 useless extension candidates. Maximal degree in co-relation 1433. Up to 79 conditions per place. [2021-03-25 07:54:59,629 INFO L142 LiptonReduction]: Number of co-enabled transitions 178 [2021-03-25 07:54:59,633 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:54:59,633 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:54:59,634 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 37 [2021-03-25 07:54:59,637 INFO L480 AbstractCegarLoop]: Abstraction has has 108 places, 109 transitions, 1124 flow [2021-03-25 07:54:59,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:59,637 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:59,637 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:59,637 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-25 07:54:59,637 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:54:59,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:59,638 INFO L82 PathProgramCache]: Analyzing trace with hash -182608333, now seen corresponding path program 1 times [2021-03-25 07:54:59,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:59,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612015320] [2021-03-25 07:54:59,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:59,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:59,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:59,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:59,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:59,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:59,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:59,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:59,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:59,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:59,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:59,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:59,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:59,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:59,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:59,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:59,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:59,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:59,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612015320] [2021-03-25 07:54:59,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:59,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 07:54:59,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236514900] [2021-03-25 07:54:59,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 07:54:59,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:59,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 07:54:59,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-03-25 07:54:59,717 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 51 [2021-03-25 07:54:59,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 109 transitions, 1124 flow. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:59,717 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:59,717 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 51 [2021-03-25 07:54:59,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:59,873 INFO L129 PetriNetUnfolder]: 93/378 cut-off events. [2021-03-25 07:54:59,874 INFO L130 PetriNetUnfolder]: For 3018/3018 co-relation queries the response was YES. [2021-03-25 07:54:59,875 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2289 conditions, 378 events. 93/378 cut-off events. For 3018/3018 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2513 event pairs, 26 based on Foata normal form. 1/379 useless extension candidates. Maximal degree in co-relation 2187. Up to 278 conditions per place. [2021-03-25 07:54:59,877 INFO L132 encePairwiseOnDemand]: 33/51 looper letters, 86 selfloop transitions, 29 changer transitions 4/121 dead transitions. [2021-03-25 07:54:59,877 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 121 transitions, 1471 flow [2021-03-25 07:54:59,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 07:54:59,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 07:54:59,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2021-03-25 07:54:59,878 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2709447415329768 [2021-03-25 07:54:59,878 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 152 transitions. [2021-03-25 07:54:59,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 152 transitions. [2021-03-25 07:54:59,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:59,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 152 transitions. [2021-03-25 07:54:59,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 13.818181818181818) internal successors, (152), 11 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:59,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 51.0) internal successors, (612), 12 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:59,880 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 51.0) internal successors, (612), 12 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:59,880 INFO L185 Difference]: Start difference. First operand has 108 places, 109 transitions, 1124 flow. Second operand 11 states and 152 transitions. [2021-03-25 07:54:59,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 121 transitions, 1471 flow [2021-03-25 07:54:59,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 121 transitions, 1397 flow, removed 19 selfloop flow, removed 14 redundant places. [2021-03-25 07:54:59,896 INFO L241 Difference]: Finished difference. Result has 106 places, 109 transitions, 1122 flow [2021-03-25 07:54:59,896 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1056, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1122, PETRI_PLACES=106, PETRI_TRANSITIONS=109} [2021-03-25 07:54:59,897 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 81 predicate places. [2021-03-25 07:54:59,897 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:59,897 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 109 transitions, 1122 flow [2021-03-25 07:54:59,897 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 109 transitions, 1122 flow [2021-03-25 07:54:59,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 104 places, 109 transitions, 1122 flow [2021-03-25 07:54:59,918 INFO L129 PetriNetUnfolder]: 43/287 cut-off events. [2021-03-25 07:54:59,919 INFO L130 PetriNetUnfolder]: For 1597/1613 co-relation queries the response was YES. [2021-03-25 07:54:59,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1426 conditions, 287 events. 43/287 cut-off events. For 1597/1613 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2085 event pairs, 2 based on Foata normal form. 7/287 useless extension candidates. Maximal degree in co-relation 1382. Up to 78 conditions per place. [2021-03-25 07:54:59,921 INFO L142 LiptonReduction]: Number of co-enabled transitions 172 [2021-03-25 07:54:59,925 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:54:59,925 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:54:59,925 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 28 [2021-03-25 07:54:59,926 INFO L480 AbstractCegarLoop]: Abstraction has has 104 places, 109 transitions, 1122 flow [2021-03-25 07:54:59,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:59,926 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:59,926 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:59,926 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-25 07:54:59,926 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:54:59,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:59,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1152305383, now seen corresponding path program 2 times [2021-03-25 07:54:59,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:59,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104812825] [2021-03-25 07:54:59,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:59,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:59,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:59,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:59,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:59,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:59,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:59,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:59,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:59,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:59,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:59,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:59,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:59,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:59,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:59,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:59,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104812825] [2021-03-25 07:54:59,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:59,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 07:54:59,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950078270] [2021-03-25 07:54:59,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 07:54:59,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:59,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 07:54:59,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-03-25 07:54:59,973 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 51 [2021-03-25 07:54:59,973 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 109 transitions, 1122 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:59,973 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:59,973 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 51 [2021-03-25 07:54:59,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:55:00,132 INFO L129 PetriNetUnfolder]: 91/376 cut-off events. [2021-03-25 07:55:00,132 INFO L130 PetriNetUnfolder]: For 2457/2457 co-relation queries the response was YES. [2021-03-25 07:55:00,133 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2173 conditions, 376 events. 91/376 cut-off events. For 2457/2457 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2501 event pairs, 26 based on Foata normal form. 2/378 useless extension candidates. Maximal degree in co-relation 2084. Up to 277 conditions per place. [2021-03-25 07:55:00,135 INFO L132 encePairwiseOnDemand]: 32/51 looper letters, 83 selfloop transitions, 21 changer transitions 14/120 dead transitions. [2021-03-25 07:55:00,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 120 transitions, 1457 flow [2021-03-25 07:55:00,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 07:55:00,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 07:55:00,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2021-03-25 07:55:00,136 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.27450980392156865 [2021-03-25 07:55:00,136 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 154 transitions. [2021-03-25 07:55:00,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 154 transitions. [2021-03-25 07:55:00,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:55:00,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 154 transitions. [2021-03-25 07:55:00,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 14.0) internal successors, (154), 11 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:55:00,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 51.0) internal successors, (612), 12 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:55:00,138 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 51.0) internal successors, (612), 12 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:55:00,138 INFO L185 Difference]: Start difference. First operand has 104 places, 109 transitions, 1122 flow. Second operand 11 states and 154 transitions. [2021-03-25 07:55:00,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 120 transitions, 1457 flow [2021-03-25 07:55:00,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 120 transitions, 1393 flow, removed 1 selfloop flow, removed 9 redundant places. [2021-03-25 07:55:00,152 INFO L241 Difference]: Finished difference. Result has 108 places, 100 transitions, 1007 flow [2021-03-25 07:55:00,153 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1062, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1007, PETRI_PLACES=108, PETRI_TRANSITIONS=100} [2021-03-25 07:55:00,153 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 83 predicate places. [2021-03-25 07:55:00,153 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:55:00,153 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 100 transitions, 1007 flow [2021-03-25 07:55:00,153 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 100 transitions, 1007 flow [2021-03-25 07:55:00,154 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 100 transitions, 1007 flow [2021-03-25 07:55:00,175 INFO L129 PetriNetUnfolder]: 39/267 cut-off events. [2021-03-25 07:55:00,175 INFO L130 PetriNetUnfolder]: For 1599/1615 co-relation queries the response was YES. [2021-03-25 07:55:00,176 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1348 conditions, 267 events. 39/267 cut-off events. For 1599/1615 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1907 event pairs, 3 based on Foata normal form. 7/268 useless extension candidates. Maximal degree in co-relation 1302. Up to 79 conditions per place. [2021-03-25 07:55:00,178 INFO L142 LiptonReduction]: Number of co-enabled transitions 170 [2021-03-25 07:55:00,182 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:55:00,182 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:55:00,182 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29 [2021-03-25 07:55:00,182 INFO L480 AbstractCegarLoop]: Abstraction has has 99 places, 100 transitions, 1007 flow [2021-03-25 07:55:00,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:55:00,183 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:55:00,183 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:55:00,183 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-25 07:55:00,183 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:55:00,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:55:00,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1827172671, now seen corresponding path program 2 times [2021-03-25 07:55:00,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:55:00,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267953746] [2021-03-25 07:55:00,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:55:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:55:00,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:55:00,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:55:00,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:55:00,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:55:00,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:55:00,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:55:00,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:55:00,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:55:00,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:55:00,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:55:00,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:55:00,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:55:00,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:55:00,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:55:00,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:55:00,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267953746] [2021-03-25 07:55:00,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:55:00,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 07:55:00,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590853157] [2021-03-25 07:55:00,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 07:55:00,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:55:00,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 07:55:00,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-03-25 07:55:00,253 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 51 [2021-03-25 07:55:00,253 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 100 transitions, 1007 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:55:00,253 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:55:00,253 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 51 [2021-03-25 07:55:00,253 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:55:00,417 INFO L129 PetriNetUnfolder]: 90/362 cut-off events. [2021-03-25 07:55:00,417 INFO L130 PetriNetUnfolder]: For 2524/2524 co-relation queries the response was YES. [2021-03-25 07:55:00,419 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2116 conditions, 362 events. 90/362 cut-off events. For 2524/2524 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2343 event pairs, 27 based on Foata normal form. 3/365 useless extension candidates. Maximal degree in co-relation 2034. Up to 238 conditions per place. [2021-03-25 07:55:00,420 INFO L132 encePairwiseOnDemand]: 32/51 looper letters, 73 selfloop transitions, 13 changer transitions 30/118 dead transitions. [2021-03-25 07:55:00,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 118 transitions, 1430 flow [2021-03-25 07:55:00,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 07:55:00,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 07:55:00,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2021-03-25 07:55:00,421 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.28520499108734404 [2021-03-25 07:55:00,421 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 160 transitions. [2021-03-25 07:55:00,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 160 transitions. [2021-03-25 07:55:00,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:55:00,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 160 transitions. [2021-03-25 07:55:00,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 14.545454545454545) internal successors, (160), 11 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:55:00,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 51.0) internal successors, (612), 12 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:55:00,423 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 51.0) internal successors, (612), 12 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:55:00,424 INFO L185 Difference]: Start difference. First operand has 99 places, 100 transitions, 1007 flow. Second operand 11 states and 160 transitions. [2021-03-25 07:55:00,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 118 transitions, 1430 flow [2021-03-25 07:55:00,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 118 transitions, 1322 flow, removed 13 selfloop flow, removed 16 redundant places. [2021-03-25 07:55:00,436 INFO L241 Difference]: Finished difference. Result has 96 places, 80 transitions, 721 flow [2021-03-25 07:55:00,437 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=721, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2021-03-25 07:55:00,438 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 71 predicate places. [2021-03-25 07:55:00,438 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:55:00,438 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 80 transitions, 721 flow [2021-03-25 07:55:00,438 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 80 transitions, 721 flow [2021-03-25 07:55:00,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 80 transitions, 721 flow [2021-03-25 07:55:00,459 INFO L129 PetriNetUnfolder]: 33/223 cut-off events. [2021-03-25 07:55:00,460 INFO L130 PetriNetUnfolder]: For 1228/1237 co-relation queries the response was YES. [2021-03-25 07:55:00,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 223 events. 33/223 cut-off events. For 1228/1237 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1459 event pairs, 5 based on Foata normal form. 6/223 useless extension candidates. Maximal degree in co-relation 1031. Up to 68 conditions per place. [2021-03-25 07:55:00,462 INFO L142 LiptonReduction]: Number of co-enabled transitions 156 [2021-03-25 07:55:00,523 INFO L154 LiptonReduction]: Checked pairs total: 4 [2021-03-25 07:55:00,523 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 07:55:00,524 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 86 [2021-03-25 07:55:00,524 INFO L480 AbstractCegarLoop]: Abstraction has has 81 places, 78 transitions, 703 flow [2021-03-25 07:55:00,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:55:00,525 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:55:00,525 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:55:00,525 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-25 07:55:00,525 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:55:00,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:55:00,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1230463126, now seen corresponding path program 1 times [2021-03-25 07:55:00,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:55:00,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995092330] [2021-03-25 07:55:00,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:55:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:55:00,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:55:00,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:55:00,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:55:00,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:55:00,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:55:00,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:55:00,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:55:00,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:55:00,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:55:00,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:55:00,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:55:00,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:55:00,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:55:00,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:55:00,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:55:00,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995092330] [2021-03-25 07:55:00,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:55:00,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 07:55:00,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167436792] [2021-03-25 07:55:00,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 07:55:00,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:55:00,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 07:55:00,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-03-25 07:55:00,581 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2021-03-25 07:55:00,582 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 78 transitions, 703 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:55:00,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:55:00,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2021-03-25 07:55:00,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:55:00,756 INFO L129 PetriNetUnfolder]: 90/370 cut-off events. [2021-03-25 07:55:00,756 INFO L130 PetriNetUnfolder]: For 2541/2546 co-relation queries the response was YES. [2021-03-25 07:55:00,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2065 conditions, 370 events. 90/370 cut-off events. For 2541/2546 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2535 event pairs, 6 based on Foata normal form. 10/380 useless extension candidates. Maximal degree in co-relation 2022. Up to 159 conditions per place. [2021-03-25 07:55:00,759 INFO L132 encePairwiseOnDemand]: 39/54 looper letters, 79 selfloop transitions, 40 changer transitions 35/157 dead transitions. [2021-03-25 07:55:00,759 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 157 transitions, 1745 flow [2021-03-25 07:55:00,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-25 07:55:00,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-25 07:55:00,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 203 transitions. [2021-03-25 07:55:00,760 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.28917378917378916 [2021-03-25 07:55:00,761 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 203 transitions. [2021-03-25 07:55:00,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 203 transitions. [2021-03-25 07:55:00,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:55:00,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 203 transitions. [2021-03-25 07:55:00,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 15.615384615384615) internal successors, (203), 13 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:55:00,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 54.0) internal successors, (756), 14 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:55:00,762 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 54.0) internal successors, (756), 14 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:55:00,762 INFO L185 Difference]: Start difference. First operand has 81 places, 78 transitions, 703 flow. Second operand 13 states and 203 transitions. [2021-03-25 07:55:00,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 157 transitions, 1745 flow [2021-03-25 07:55:00,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 157 transitions, 1505 flow, removed 99 selfloop flow, removed 16 redundant places. [2021-03-25 07:55:00,776 INFO L241 Difference]: Finished difference. Result has 82 places, 91 transitions, 882 flow [2021-03-25 07:55:00,776 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=882, PETRI_PLACES=82, PETRI_TRANSITIONS=91} [2021-03-25 07:55:00,776 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 57 predicate places. [2021-03-25 07:55:00,776 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:55:00,776 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 91 transitions, 882 flow [2021-03-25 07:55:00,776 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 91 transitions, 882 flow [2021-03-25 07:55:00,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 76 places, 91 transitions, 882 flow [2021-03-25 07:55:00,793 INFO L129 PetriNetUnfolder]: 38/246 cut-off events. [2021-03-25 07:55:00,793 INFO L130 PetriNetUnfolder]: For 1655/1674 co-relation queries the response was YES. [2021-03-25 07:55:00,793 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1193 conditions, 246 events. 38/246 cut-off events. For 1655/1674 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1695 event pairs, 3 based on Foata normal form. 3/243 useless extension candidates. Maximal degree in co-relation 1159. Up to 74 conditions per place. [2021-03-25 07:55:00,795 INFO L142 LiptonReduction]: Number of co-enabled transitions 148 [2021-03-25 07:55:00,841 INFO L154 LiptonReduction]: Checked pairs total: 6 [2021-03-25 07:55:00,841 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 07:55:00,841 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 65 [2021-03-25 07:55:00,842 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 91 transitions, 900 flow [2021-03-25 07:55:00,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:55:00,842 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:55:00,842 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:55:00,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-25 07:55:00,842 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:55:00,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:55:00,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1073802130, now seen corresponding path program 1 times [2021-03-25 07:55:00,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:55:00,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133720095] [2021-03-25 07:55:00,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:55:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:55:00,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:55:00,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:55:00,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:55:00,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:55:00,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:55:00,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:55:00,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:55:00,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:55:00,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:55:00,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:55:00,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:55:00,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:55:00,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:55:00,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133720095] [2021-03-25 07:55:00,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:55:00,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 07:55:00,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618023700] [2021-03-25 07:55:00,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 07:55:00,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:55:00,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 07:55:00,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-25 07:55:00,879 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 57 [2021-03-25 07:55:00,879 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 91 transitions, 900 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:55:00,879 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:55:00,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 57 [2021-03-25 07:55:00,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:55:01,097 INFO L129 PetriNetUnfolder]: 84/400 cut-off events. [2021-03-25 07:55:01,098 INFO L130 PetriNetUnfolder]: For 3075/3075 co-relation queries the response was YES. [2021-03-25 07:55:01,099 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2272 conditions, 400 events. 84/400 cut-off events. For 3075/3075 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2902 event pairs, 12 based on Foata normal form. 3/403 useless extension candidates. Maximal degree in co-relation 2170. Up to 145 conditions per place. [2021-03-25 07:55:01,100 INFO L132 encePairwiseOnDemand]: 37/57 looper letters, 55 selfloop transitions, 74 changer transitions 25/156 dead transitions. [2021-03-25 07:55:01,100 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 156 transitions, 1863 flow [2021-03-25 07:55:01,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-25 07:55:01,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-25 07:55:01,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 208 transitions. [2021-03-25 07:55:01,102 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2432748538011696 [2021-03-25 07:55:01,102 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 208 transitions. [2021-03-25 07:55:01,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 208 transitions. [2021-03-25 07:55:01,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:55:01,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 208 transitions. [2021-03-25 07:55:01,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 13.866666666666667) internal successors, (208), 15 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:55:01,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 57.0) internal successors, (912), 16 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:55:01,104 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 57.0) internal successors, (912), 16 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:55:01,104 INFO L185 Difference]: Start difference. First operand has 76 places, 91 transitions, 900 flow. Second operand 15 states and 208 transitions. [2021-03-25 07:55:01,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 156 transitions, 1863 flow [2021-03-25 07:55:01,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 156 transitions, 1586 flow, removed 115 selfloop flow, removed 7 redundant places. [2021-03-25 07:55:01,117 INFO L241 Difference]: Finished difference. Result has 91 places, 115 transitions, 1257 flow [2021-03-25 07:55:01,118 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1257, PETRI_PLACES=91, PETRI_TRANSITIONS=115} [2021-03-25 07:55:01,118 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 66 predicate places. [2021-03-25 07:55:01,118 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:55:01,118 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 115 transitions, 1257 flow [2021-03-25 07:55:01,118 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 115 transitions, 1257 flow [2021-03-25 07:55:01,119 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 115 transitions, 1257 flow [2021-03-25 07:55:01,139 INFO L129 PetriNetUnfolder]: 34/286 cut-off events. [2021-03-25 07:55:01,139 INFO L130 PetriNetUnfolder]: For 1828/1843 co-relation queries the response was YES. [2021-03-25 07:55:01,140 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1445 conditions, 286 events. 34/286 cut-off events. For 1828/1843 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2192 event pairs, 3 based on Foata normal form. 5/286 useless extension candidates. Maximal degree in co-relation 1406. Up to 64 conditions per place. [2021-03-25 07:55:01,142 INFO L142 LiptonReduction]: Number of co-enabled transitions 148 [2021-03-25 07:55:01,191 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-25 07:55:01,191 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 07:55:01,191 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 73 [2021-03-25 07:55:01,192 INFO L480 AbstractCegarLoop]: Abstraction has has 90 places, 115 transitions, 1262 flow [2021-03-25 07:55:01,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:55:01,192 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:55:01,192 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:55:01,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-25 07:55:01,192 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:55:01,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:55:01,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1652193364, now seen corresponding path program 1 times [2021-03-25 07:55:01,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:55:01,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095058550] [2021-03-25 07:55:01,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:55:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 07:55:01,196 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 07:55:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 07:55:01,198 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 07:55:01,209 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 07:55:01,209 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 07:55:01,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-25 07:55:01,223 INFO L202 PluginConnector]: Adding new model NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 07:55:01 BasicIcfg [2021-03-25 07:55:01,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 07:55:01,223 INFO L168 Benchmark]: Toolchain (without parser) took 7987.72 ms. Allocated memory was 255.9 MB in the beginning and 499.1 MB in the end (delta: 243.3 MB). Free memory was 237.1 MB in the beginning and 282.5 MB in the end (delta: -45.4 MB). Peak memory consumption was 197.8 MB. Max. memory is 16.0 GB. [2021-03-25 07:55:01,224 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.51 ms. Allocated memory is still 255.9 MB. Free memory was 238.2 MB in the beginning and 238.2 MB in the end (delta: 39.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:55:01,224 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.95 ms. Allocated memory is still 255.9 MB. Free memory was 237.1 MB in the beginning and 235.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 07:55:01,224 INFO L168 Benchmark]: Boogie Preprocessor took 12.28 ms. Allocated memory is still 255.9 MB. Free memory was 235.6 MB in the beginning and 234.8 MB in the end (delta: 752.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:55:01,224 INFO L168 Benchmark]: RCFGBuilder took 210.65 ms. Allocated memory is still 255.9 MB. Free memory was 234.6 MB in the beginning and 241.4 MB in the end (delta: -6.8 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.0 GB. [2021-03-25 07:55:01,224 INFO L168 Benchmark]: TraceAbstraction took 7734.47 ms. Allocated memory was 255.9 MB in the beginning and 499.1 MB in the end (delta: 243.3 MB). Free memory was 240.7 MB in the beginning and 282.5 MB in the end (delta: -41.7 MB). Peak memory consumption was 201.2 MB. Max. memory is 16.0 GB. [2021-03-25 07:55:01,224 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 0.51 ms. Allocated memory is still 255.9 MB. Free memory was 238.2 MB in the beginning and 238.2 MB in the end (delta: 39.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 21.95 ms. Allocated memory is still 255.9 MB. Free memory was 237.1 MB in the beginning and 235.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.28 ms. Allocated memory is still 255.9 MB. Free memory was 235.6 MB in the beginning and 234.8 MB in the end (delta: 752.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 210.65 ms. Allocated memory is still 255.9 MB. Free memory was 234.6 MB in the beginning and 241.4 MB in the end (delta: -6.8 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7734.47 ms. Allocated memory was 255.9 MB in the beginning and 499.1 MB in the end (delta: 243.3 MB). Free memory was 240.7 MB in the beginning and 282.5 MB in the end (delta: -41.7 MB). Peak memory consumption was 201.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 52.1ms, 27 PlacesBefore, 25 PlacesAfterwards, 22 TransitionsBefore, 20 TransitionsAfterwards, 140 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 354 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 70, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 29, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 29, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 70, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 29, unknown conditional: 0, unknown unconditional: 29] , Statistics on independence cache: Total cache size (in pairs): 11, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 196.6ms, 50 PlacesBefore, 44 PlacesAfterwards, 48 TransitionsBefore, 48 TransitionsAfterwards, 138 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 8 TotalNumberOfCompositions, 843 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 89, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 60, negative conditional: 0, negative unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 10, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 10, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 89, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 57, negative conditional: 0, negative unconditional: 57, unknown: 10, unknown conditional: 0, unknown unconditional: 10] , Statistics on independence cache: Total cache size (in pairs): 9, Positive cache size: 7, Positive conditional cache size: 0, Positive unconditional cache size: 7, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 138.4ms, 72 PlacesBefore, 71 PlacesAfterwards, 104 TransitionsBefore, 102 TransitionsAfterwards, 214 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 38.9ms, 72 PlacesBefore, 72 PlacesAfterwards, 100 TransitionsBefore, 100 TransitionsAfterwards, 184 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 105.7ms, 89 PlacesBefore, 88 PlacesAfterwards, 114 TransitionsBefore, 113 TransitionsAfterwards, 188 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 1, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 33.9ms, 100 PlacesBefore, 92 PlacesAfterwards, 110 TransitionsBefore, 110 TransitionsAfterwards, 184 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 31.0ms, 93 PlacesBefore, 91 PlacesAfterwards, 110 TransitionsBefore, 110 TransitionsAfterwards, 182 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 52.1ms, 94 PlacesBefore, 90 PlacesAfterwards, 110 TransitionsBefore, 109 TransitionsAfterwards, 180 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 28.7ms, 94 PlacesBefore, 87 PlacesAfterwards, 106 TransitionsBefore, 106 TransitionsAfterwards, 180 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 62.1ms, 92 PlacesBefore, 79 PlacesAfterwards, 98 TransitionsBefore, 98 TransitionsAfterwards, 180 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 107.1ms, 86 PlacesBefore, 86 PlacesAfterwards, 118 TransitionsBefore, 118 TransitionsAfterwards, 186 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 74.1ms, 107 PlacesBefore, 105 PlacesAfterwards, 126 TransitionsBefore, 125 TransitionsAfterwards, 192 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 1 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 41.4ms, 115 PlacesBefore, 113 PlacesAfterwards, 135 TransitionsBefore, 135 TransitionsAfterwards, 196 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 39.1ms, 121 PlacesBefore, 115 PlacesAfterwards, 133 TransitionsBefore, 133 TransitionsAfterwards, 196 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 57.1ms, 122 PlacesBefore, 116 PlacesAfterwards, 125 TransitionsBefore, 124 TransitionsAfterwards, 194 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 36.0ms, 120 PlacesBefore, 108 PlacesAfterwards, 109 TransitionsBefore, 109 TransitionsAfterwards, 178 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 28.4ms, 106 PlacesBefore, 104 PlacesAfterwards, 109 TransitionsBefore, 109 TransitionsAfterwards, 172 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 28.6ms, 108 PlacesBefore, 99 PlacesAfterwards, 100 TransitionsBefore, 100 TransitionsAfterwards, 170 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 85.1ms, 96 PlacesBefore, 81 PlacesAfterwards, 80 TransitionsBefore, 78 TransitionsAfterwards, 156 CoEnabledTransitionPairs, 4 FixpointIterations, 2 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 4 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 65.0ms, 82 PlacesBefore, 76 PlacesAfterwards, 91 TransitionsBefore, 91 TransitionsAfterwards, 148 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 6 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 7, Positive conditional cache size: 0, Positive unconditional cache size: 7, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 73.1ms, 91 PlacesBefore, 90 PlacesAfterwards, 115 TransitionsBefore, 115 TransitionsAfterwards, 148 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 7, Positive conditional cache size: 0, Positive unconditional cache size: 7, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - CounterExampleResult [Line: 28]: assertion can be violated assertion can be violated We found a FailurePath: [L22] 0 x := 0; VAL [x=0] [L24] FORK 0 fork 1 IncrementProcess1(); VAL [x=0] [L25] FORK 0 fork 2 IncrementProcess2(); VAL [x=0] [L54] 2 localx := x; VAL [localx=0, x=0] [L38] 1 localx := x; [L39] 1 x := localx + 1; VAL [localx=0, localx=0, x=1] [L41] 1 localx := x; [L42] 1 x := localx + 1; VAL [localx=0, localx=1, x=2] [L55] 2 x := localx + 1; VAL [localx=0, localx=1, x=1] [L44] 1 localx := x; VAL [localx=0, localx=1, x=1] [L57] 2 localx := x; [L58] 2 x := localx + 1; VAL [localx=1, localx=1, x=2] [L60] 2 localx := x; [L61] 2 x := localx + 1; [L45] 1 x := localx + 1; [L26] JOIN 1 join 1; VAL [localx=2, localx=1, x=2] [L27] JOIN 2 join 2; VAL [localx=2, localx=1, x=2] [L28] 0 assert x >= 3; VAL [localx=2, localx=1, x=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 6.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 7596.9ms, OverallIterations: 21, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 4666.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 132.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 304 SDtfs, 449 SDslu, 330 SDs, 0 SdLazy, 2647 SolverSat, 856 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1516.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 1533.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1497occurred in iteration=12, InterpolantAutomatonStates: 228, 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: 21.0ms SsaConstructionTime, 94.5ms SatisfiabilityAnalysisTime, 1142.2ms InterpolantComputationTime, 297 NumberOfCodeBlocks, 297 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 263 ConstructedInterpolants, 0 QuantifiedInterpolants, 789 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...